+ if(getTableTypes[j][0].equals(types[i])) {
+ sql.append(getTableTypes[j][1]);
+ notFirst=true;
+ }
+ }
+
+ // Added by Stefan Andreasen
+ // Now take the pattern into account
+ sql.append(") and relname like '");
+ sql.append(tableNamePattern.toLowerCase());
+ sql.append("'");
+
+ // Now run the query
+ r = connection.ExecSQL(sql.toString());
+
+ byte remarks[];
+
+ while (r.next())
+ {
+ byte[][] tuple = new byte[5][0];
+
+ // Fetch the description for the table (if any)
+ java.sql.ResultSet dr = connection.ExecSQL("select description from pg_description where objoid="+r.getInt(2));
+ if(((org.postgresql.ResultSet)dr).getTupleCount()==1) {
+ dr.next();
+ remarks = dr.getBytes(1);
+ } else
+ remarks = defaultRemarks;
+ dr.close();
+
+ tuple[0] = null; // Catalog name
+ tuple[1] = null; // Schema name
+ tuple[2] = r.getBytes(1); // Table name
+ tuple[3] = null; // Table type
+ tuple[4] = remarks; // Remarks
+ v.addElement(tuple);
+ }
+ r.close();
+ return new ResultSet(connection, f, v, "OK", 1);
+ }
+
+ // This array contains the valid values for the types argument
+ // in getTables().
+ //
+ // Each supported type consists of it's name, and the sql where
+ // clause to retrieve that value.
+ //
+ // IMPORTANT: the query must be enclosed in ( )
+ private static final String getTableTypes[][] = {
+ {"TABLE", "(relkind='r' and relname !~ '^pg_' and relname !~ '^xinv')"},
+ {"INDEX", "(relkind='i' and relname !~ '^pg_' and relname !~ '^xinx')"},
+ {"LARGE OBJECT", "(relkind='r' and relname ~ '^xinv')"},
+ {"SEQUENCE", "(relkind='S' and relname !~ '^pg_')"},
+ {"SYSTEM TABLE", "(relkind='r' and relname ~ '^pg_')"},
+ {"SYSTEM INDEX", "(relkind='i' and relname ~ '^pg_')"}
+ };
+
+ // These are the default tables, used when NULL is passed to getTables
+ // The choice of these provide the same behaviour as psql's \d
+ private static final String defaultTableTypes[] = {
+ "TABLE","INDEX","SEQUENCE"
+ };
+
+ /**
+ * Get the schema names available in this database. The results
+ * are ordered by schema name.
+ *
+ *
The schema column is:
+ *
TABLE_SCHEM String => schema name
+ *
+ *
+ * @return ResultSet each row has a single String column that is a
+ * schema name
+ */
+ public java.sql.ResultSet getSchemas() throws SQLException
+ {
+ // We don't use schemas, so we simply return a single schema name "".
+ //
+ Field f[] = new Field[1];
+ Vector v = new Vector();
+ byte[][] tuple = new byte[1][0];
+ f[0] = new Field(connection,new String("TABLE_SCHEM"),iVarcharOid,32);
+ tuple[0] = "".getBytes();
+ v.addElement(tuple);
+ return new ResultSet(connection,f,v,"OK",1);
+ }
+
+ /**
+ * Get the catalog names available in this database. The results
+ * are ordered by catalog name.
+ *
+ *
The catalog column is:
+ *
TABLE_CAT String => catalog name
+ *
+ *
+ * @return ResultSet each row has a single String column that is a
+ * catalog name
+ */
+ public java.sql.ResultSet getCatalogs() throws SQLException
+ {
+ // We don't use catalogs, so we simply return a single catalog name "".
+ Field f[] = new Field[1];
+ Vector v = new Vector();
+ byte[][] tuple = new byte[1][0];
+ f[0] = new Field(connection,new String("TABLE_CAT"),iVarcharOid,32);
+ tuple[0] = "".getBytes();
+ v.addElement(tuple);
+ return new ResultSet(connection,f,v,"OK",1);
+ }
+
+ /**
+ * Get the table types available in this database. The results
+ * are ordered by table type.
+ *
+ *
TABLE_TYPE String => table type. Typical types are "TABLE",
+ * "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY",
+ * "LOCAL TEMPORARY", "ALIAS", "SYNONYM".
+ *
+ *
+ * @return ResultSet each row has a single String column that is a
+ * table type
+ */
+ public java.sql.ResultSet getTableTypes() throws SQLException
+ {
+ Field f[] = new Field[1];
+ Vector v = new Vector();
+ byte[][] tuple = new byte[1][0];
+ f[0] = new Field(connection,new String("TABLE_TYPE"),iVarcharOid,32);
+ for(int i=0;i
+ tuple[0] = getTableTypes[i][0].getBytes();
+ v.addElement(tuple);
+ }
+ return new ResultSet(connection,f,v,"OK",1);
+ }
+
+ /**
+ * Get a description of table columns available in a catalog.
+ *
+ *
Only column descriptions matching the catalog, schema, table
+ * and column name criteria are returned. They are ordered by
+ * TABLE_SCHEM, TABLE_NAME and ORDINAL_POSITION.
+ *
+ *
Each column description has the following columns:
+ *
TABLE_CAT String => table catalog (may be null)
+ *
TABLE_SCHEM String => table schema (may be null)
+ *
TABLE_NAME String => table name
+ *
COLUMN_NAME String => column name
+ *
DATA_TYPE short => SQL type from java.sql.Types
+ *
TYPE_NAME String => Data source dependent type name
+ *
COLUMN_SIZE int => column size. For char or date
+ * types this is the maximum number of characters, for numeric or
+ * decimal types this is precision.
+ *
BUFFER_LENGTH is not used.
+ *
DECIMAL_DIGITS int => the number of fractional digits
+ *
NUM_PREC_RADIX int => Radix (typically either 10 or 2)
+ *
NULLABLE int => is NULL allowed?
+ *
columnNoNulls - might not allow NULL values
+ *
columnNullable - definitely allows NULL values
+ *
columnNullableUnknown - nullability unknown
+ *
+ *
REMARKS String => comment describing column (may be null)
+ *
COLUMN_DEF String => default value (may be null)
+ *
SQL_DATA_TYPE int => unused
+ *
SQL_DATETIME_SUB int => unused
+ *
CHAR_OCTET_LENGTH int => for char types the
+ * maximum number of bytes in the column
+ *
ORDINAL_POSITION int => index of column in table
+ * (starting at 1)
+ *
IS_NULLABLE String => "NO" means column definitely
+ * does not allow NULL values; "YES" means the column might
+ * allow NULL values. An empty string means nobody knows.
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schemaPattern a schema name pattern; "" retrieves those
+ * without a schema
+ * @param tableNamePattern a table name pattern
+ * @param columnNamePattern a column name pattern
+ * @return ResultSet each row is a column description
+ * @see #getSearchStringEscape
+ */
+ public java.sql.ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException
+ {
+ // the field descriptors for the new ResultSet
+ Field f[] = new Field[18];
+ java.sql.ResultSet r; // ResultSet for the SQL query that we need to do
+ Vector v = new Vector(); // The new ResultSet tuple stuff
+
+ f[0] = new Field(connection, new String("TABLE_CAT"), iVarcharOid, 32);
+ f[1] = new Field(connection, new String("TABLE_SCHEM"), iVarcharOid, 32);
+ f[2] = new Field(connection, new String("TABLE_NAME"), iVarcharOid, 32);
+ f[3] = new Field(connection, new String("COLUMN_NAME"), iVarcharOid, 32);
+ f[4] = new Field(connection, new String("DATA_TYPE"), iInt2Oid, 2);
+ f[5] = new Field(connection, new String("TYPE_NAME"), iVarcharOid, 32);
+ f[6] = new Field(connection, new String("COLUMN_SIZE"), iInt4Oid, 4);
+ f[7] = new Field(connection, new String("BUFFER_LENGTH"), iVarcharOid, 32);
+ f[8] = new Field(connection, new String("DECIMAL_DIGITS"), iInt4Oid, 4);
+ f[9] = new Field(connection, new String("NUM_PREC_RADIX"), iInt4Oid, 4);
+ f[10] = new Field(connection, new String("NULLABLE"), iInt4Oid, 4);
+ f[11] = new Field(connection, new String("REMARKS"), iVarcharOid, 32);
+ f[12] = new Field(connection, new String("COLUMN_DEF"), iVarcharOid, 32);
+ f[13] = new Field(connection, new String("SQL_DATA_TYPE"), iInt4Oid, 4);
+ f[14] = new Field(connection, new String("SQL_DATETIME_SUB"), iInt4Oid, 4);
+ f[15] = new Field(connection, new String("CHAR_OCTET_LENGTH"), iVarcharOid, 32);
+ f[16] = new Field(connection, new String("ORDINAL_POSITION"), iInt4Oid,4);
+ f[17] = new Field(connection, new String("IS_NULLABLE"), iVarcharOid, 32);
+
+ // Added by Stefan Andreasen
+ // If the pattern are null then set them to %
+ if (tableNamePattern == null) tableNamePattern="%";
+ if (columnNamePattern == null) columnNamePattern="%";
+
+ // Now form the query
+ // Modified by Stefan Andreasen
+ r = connection.ExecSQL("select a.oid,c.relname,a.attname,a.atttypid,a.attnum,a.attnotnull,a.attlen,a.atttypmod from pg_class c, pg_attribute a where a.attrelid=c.oid and c.relname like '"+tableNamePattern.toLowerCase()+"' and a.attname like '"+columnNamePattern.toLowerCase()+"' and a.attnum>0 order by c.relname,a.attnum");
+
+ byte remarks[];
+
+ while(r.next()) {
+ byte[][] tuple = new byte[18][0];
+
+ // Fetch the description for the table (if any)
+ java.sql.ResultSet dr = connection.ExecSQL("select description from pg_description where objoid="+r.getInt(1));
+ if(((org.postgresql.ResultSet)dr).getTupleCount()==1) {
+ dr.next();
+ tuple[11] = dr.getBytes(1);
+ } else
+ tuple[11] = defaultRemarks;
+
+ dr.close();
+
+ tuple[0] = "".getBytes(); // Catalog name
+ tuple[1] = "".getBytes(); // Schema name
+ tuple[2] = r.getBytes(2); // Table name
+ tuple[3] = r.getBytes(3); // Column name
+
+ dr = connection.ExecSQL("select typname from pg_type where oid = "+r.getString(4));
+ dr.next();
+ String typname=dr.getString(1);
+ dr.close();
+ tuple[4] = Integer.toString(Field.getSQLType(typname)).getBytes(); // Data type
+ tuple[5] = typname.getBytes(); // Type name
+
+ // Column size
+ // Looking at the psql source,
+ // I think the length of a varchar as specified when the table was created
+ // should be extracted from atttypmod which contains this length + sizeof(int32)
+ if (typname.equals("bpchar") || typname.equals("varchar")) {
+ int atttypmod = r.getInt(8);
+ tuple[6] = Integer.toString(atttypmod != -1 ? atttypmod - VARHDRSZ : 0).getBytes();
+ } else
+ tuple[6] = r.getBytes(7);
+
+ tuple[7] = null; // Buffer length
+
+ tuple[8] = "0".getBytes(); // Decimal Digits - how to get this?
+ tuple[9] = "10".getBytes(); // Num Prec Radix - assume decimal
+
+ // tuple[10] is below
+ // tuple[11] is above
+
+ tuple[12] = null; // column default
+
+ tuple[13] = null; // sql data type (unused)
+ tuple[14] = null; // sql datetime sub (unused)
+
+ tuple[15] = tuple[6]; // char octet length
+
+ tuple[16] = r.getBytes(5); // ordinal position
+
+ String nullFlag = r.getString(6);
+ tuple[10] = Integer.toString(nullFlag.equals("f")?java.sql.DatabaseMetaData.columnNullable:java.sql.DatabaseMetaData.columnNoNulls).getBytes(); // Nullable
+ tuple[17] = (nullFlag.equals("f")?"YES":"NO").getBytes(); // is nullable
+
+ v.addElement(tuple);
+ }
+ r.close();
+ return new ResultSet(connection, f, v, "OK", 1);
+ }
+
+ /**
+ * Get a description of the access rights for a table's columns.
+ *
+ *
Only privileges matching the column name criteria are
+ * returned. They are ordered by COLUMN_NAME and PRIVILEGE.
+ *
+ *
Each privilige description has the following columns:
+ *
TABLE_CAT String => table catalog (may be null)
+ *
TABLE_SCHEM String => table schema (may be null)
+ *
TABLE_NAME String => table name
+ *
COLUMN_NAME String => column name
+ *
GRANTOR => grantor of access (may be null)
+ *
GRANTEE String => grantee of access
+ *
PRIVILEGE String => name of access (SELECT,
+ * INSERT, UPDATE, REFRENCES, ...)
+ *
IS_GRANTABLE String => "YES" if grantee is permitted
+ * to grant to others; "NO" if not; null if unknown
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name; "" retrieves those without a schema
+ * @param table a table name
+ * @param columnNamePattern a column name pattern
+ * @return ResultSet each row is a column privilege description
+ * @see #getSearchStringEscape
+ */
+ public java.sql.ResultSet getColumnPrivileges(String catalog, String schema, String table, String columnNamePattern) throws SQLException
+ {
+ Field f[] = new Field[8];
+ Vector v = new Vector();
+
+ if(table==null)
+ table="%";
+
+ if(columnNamePattern==null)
+ columnNamePattern="%";
+ else
+ columnNamePattern=columnNamePattern.toLowerCase();
+
+ f[0] = new Field(connection,new String("TABLE_CAT"),iVarcharOid,32);
+ f[1] = new Field(connection,new String("TABLE_SCHEM"),iVarcharOid,32);
+ f[2] = new Field(connection,new String("TABLE_NAME"),iVarcharOid,32);
+ f[3] = new Field(connection,new String("COLUMN_NAME"),iVarcharOid,32);
+ f[4] = new Field(connection,new String("GRANTOR"),iVarcharOid,32);
+ f[5] = new Field(connection,new String("GRANTEE"),iVarcharOid,32);
+ f[6] = new Field(connection,new String("PRIVILEGE"),iVarcharOid,32);
+ f[7] = new Field(connection,new String("IS_GRANTABLE"),iVarcharOid,32);
+
+ // This is taken direct from the psql source
+ java.sql.ResultSet r = connection.ExecSQL("SELECT relname, relacl FROM pg_class, pg_user WHERE ( relkind = 'r' OR relkind = 'i') and relname !~ '^pg_' and relname !~ '^xin[vx][0-9]+' and usesysid = relowner and relname like '"+table.toLowerCase()+"' ORDER BY relname");
+ while(r.next()) {
+ byte[][] tuple = new byte[8][0];
+ tuple[0] = tuple[1]= "".getBytes();
+ DriverManager.println("relname=\""+r.getString(1)+"\" relacl=\""+r.getString(2)+"\"");
+
+ // For now, don't add to the result as relacl needs to be processed.
+ //v.addElement(tuple);
+ }
+
+ return new ResultSet(connection,f,v,"OK",1);
+ }
+
+ /**
+ * Get a description of the access rights for each table available
+ * in a catalog.
+ *
+ *
Only privileges matching the schema and table name
+ * criteria are returned. They are ordered by TABLE_SCHEM,
+ * TABLE_NAME, and PRIVILEGE.
+ *
+ *
Each privilige description has the following columns:
+ *
TABLE_CAT String => table catalog (may be null)
+ *
TABLE_SCHEM String => table schema (may be null)
+ *
TABLE_NAME String => table name
+ *
COLUMN_NAME String => column name
+ *
GRANTOR => grantor of access (may be null)
+ *
GRANTEE String => grantee of access
+ *
PRIVILEGE String => name of access (SELECT,
+ * INSERT, UPDATE, REFRENCES, ...)
+ *
IS_GRANTABLE String => "YES" if grantee is permitted
+ * to grant to others; "NO" if not; null if unknown
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schemaPattern a schema name pattern; "" retrieves those
+ * without a schema
+ * @param tableNamePattern a table name pattern
+ * @return ResultSet each row is a table privilege description
+ * @see #getSearchStringEscape
+ */
+ public java.sql.ResultSet getTablePrivileges(String catalog, String schemaPattern, String tableNamePattern) throws SQLException
+ {
+ // XXX-Not Implemented
+ return null;
+ }
+
+ /**
+ * Get a description of a table's optimal set of columns that
+ * uniquely identifies a row. They are ordered by SCOPE.
+ *
+ *
Each column description has the following columns:
+ *
SCOPE short => actual scope of result
+ *
bestRowTemporary - very temporary, while using row
+ *
bestRowTransaction - valid for remainder of current transaction
+ *
bestRowSession - valid for remainder of current session
+ *
+ *
COLUMN_NAME String => column name
+ *
DATA_TYPE short => SQL data type from java.sql.Types
+ *
TYPE_NAME String => Data source dependent type name
+ *
COLUMN_SIZE int => precision
+ *
BUFFER_LENGTH int => not used
+ *
DECIMAL_DIGITS short => scale
+ *
PSEUDO_COLUMN short => is this a pseudo column
+ * like an Oracle ROWID
+ *
bestRowUnknown - may or may not be pseudo column
+ *
bestRowNotPseudo - is NOT a pseudo column
+ *
bestRowPseudo - is a pseudo column
+ *
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name; "" retrieves those without a schema
+ * @param table a table name
+ * @param scope the scope of interest; use same values as SCOPE
+ * @param nullable include columns that are nullable?
+ * @return ResultSet each row is a column description
+ */
+ // Implementation note: This is required for Borland's JBuilder to work
+ public java.sql.ResultSet getBestRowIdentifier(String catalog, String schema, String table, int scope, boolean nullable) throws SQLException
+ {
+ // for now, this returns an empty result set.
+ Field f[] = new Field[8];
+ ResultSet r; // ResultSet for the SQL query that we need to do
+ Vector v = new Vector(); // The new ResultSet tuple stuff
+
+ f[0] = new Field(connection, new String("SCOPE"), iInt2Oid, 2);
+ f[1] = new Field(connection, new String("COLUMN_NAME"), iVarcharOid, 32);
+ f[2] = new Field(connection, new String("DATA_TYPE"), iInt2Oid, 2);
+ f[3] = new Field(connection, new String("TYPE_NAME"), iVarcharOid, 32);
+ f[4] = new Field(connection, new String("COLUMN_SIZE"), iInt4Oid, 4);
+ f[5] = new Field(connection, new String("BUFFER_LENGTH"), iInt4Oid, 4);
+ f[6] = new Field(connection, new String("DECIMAL_DIGITS"), iInt2Oid, 2);
+ f[7] = new Field(connection, new String("PSEUDO_COLUMN"), iInt2Oid, 2);
+
+ return new ResultSet(connection, f, v, "OK", 1);
+ }
+
+ /**
+ * Get a description of a table's columns that are automatically
+ * updated when any value in a row is updated. They are
+ * unordered.
+ *
+ *
Each column description has the following columns:
+ *
SCOPE short => is not used
+ *
COLUMN_NAME String => column name
+ *
DATA_TYPE short => SQL data type from java.sql.Types
+ *
TYPE_NAME String => Data source dependent type name
+ *
COLUMN_SIZE int => precision
+ *
BUFFER_LENGTH int => length of column value in bytes
+ *
DECIMAL_DIGITS short => scale
+ *
PSEUDO_COLUMN short => is this a pseudo column
+ * like an Oracle ROWID
+ *
versionColumnUnknown - may or may not be pseudo column
+ *
versionColumnNotPseudo - is NOT a pseudo column
+ *
versionColumnPseudo - is a pseudo column
+ *
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name; "" retrieves those without a schema
+ * @param table a table name
+ * @return ResultSet each row is a column description
+ */
+ public java.sql.ResultSet getVersionColumns(String catalog, String schema, String table) throws SQLException
+ {
+ // XXX-Not Implemented
+ return null;
+ }
+
+ /**
+ * Get a description of a table's primary key columns. They
+ * are ordered by COLUMN_NAME.
+ *
+ *
Each column description has the following columns:
+ *
TABLE_CAT String => table catalog (may be null)
+ *
TABLE_SCHEM String => table schema (may be null)
+ *
TABLE_NAME String => table name
+ *
COLUMN_NAME String => column name
+ *
KEY_SEQ short => sequence number within primary key
+ *
PK_NAME String => primary key name (may be null)
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name pattern; "" retrieves those
+ * without a schema
+ * @param table a table name
+ * @return ResultSet each row is a primary key column description
+ */
+ public java.sql.ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException
+ {
+ return connection.createStatement().executeQuery("SELECT " +
+ "'' as TABLE_CAT," +
+ "'' AS TABLE_SCHEM," +
+ "bc.relname AS TABLE_NAME," +
+ "a.attname AS COLUMN_NAME," +
+ "a.attnum as KEY_SEQ,"+
+ "ic.relname as PK_NAME " +
+ " FROM pg_class bc, pg_class ic, pg_index i, pg_attribute a" +
+ " WHERE bc.relkind = 'r' " + // -- not indices
+ " and upper(bc.relname) = upper('"+table+"')" +
+ " and i.indrelid = bc.oid" +
+ " and i.indexrelid = ic.oid" +
+ " and ic.oid = a.attrelid" +
+ " and i.indisprimary='t' " +
+ " ORDER BY table_name, pk_name, key_seq"
+ );
+ }
+
+ /**
+ * Get a description of the primary key columns that are
+ * referenced by a table's foreign key columns (the primary keys
+ * imported by a table). They are ordered by PKTABLE_CAT,
+ * PKTABLE_SCHEM, PKTABLE_NAME, and KEY_SEQ.
+ *
+ *
Each primary key column description has the following columns:
+ *
PKTABLE_CAT String => primary key table catalog
+ * being imported (may be null)
+ *
PKTABLE_SCHEM String => primary key table schema
+ * being imported (may be null)
+ *
PKTABLE_NAME String => primary key table name
+ * being imported
+ *
PKCOLUMN_NAME String => primary key column name
+ * being imported
+ *
FKTABLE_CAT String => foreign key table catalog (may be null)
+ *
FKTABLE_SCHEM String => foreign key table schema (may be null)
+ *
FKTABLE_NAME String => foreign key table name
+ *
FKCOLUMN_NAME String => foreign key column name
+ *
KEY_SEQ short => sequence number within foreign key
+ *
UPDATE_RULE short => What happens to
+ * foreign key when primary is updated:
+ *
importedKeyCascade - change imported key to agree
+ * with primary key update
+ *
importedKeyRestrict - do not allow update of primary
+ * key if it has been imported
+ *
importedKeySetNull - change imported key to NULL if
+ * its primary key has been updated
+ *
+ *
DELETE_RULE short => What happens to
+ * the foreign key when primary is deleted.
+ *
importedKeyCascade - delete rows that import a deleted key
+ *
importedKeyRestrict - do not allow delete of primary
+ * key if it has been imported
+ *
importedKeySetNull - change imported key to NULL if
+ * its primary key has been deleted
+ *
+ *
FK_NAME String => foreign key name (may be null)
+ *
PK_NAME String => primary key name (may be null)
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name pattern; "" retrieves those
+ * without a schema
+ * @param table a table name
+ * @return ResultSet each row is a primary key column description
+ * @see #getExportedKeys
+ */
+ public java.sql.ResultSet getImportedKeys(String catalog, String schema, String table) throws SQLException
+ {
+ // XXX-Not Implemented
+ return null;
+ }
+
+ /**
+ * Get a description of a foreign key columns that reference a
+ * table's primary key columns (the foreign keys exported by a
+ * table). They are ordered by FKTABLE_CAT, FKTABLE_SCHEM,
+ * FKTABLE_NAME, and KEY_SEQ.
+ *
+ *
Each foreign key column description has the following columns:
+ *
PKTABLE_CAT String => primary key table catalog (may be null)
+ *
PKTABLE_SCHEM String => primary key table schema (may be null)
+ *
PKTABLE_NAME String => primary key table name
+ *
PKCOLUMN_NAME String => primary key column name
+ *
FKTABLE_CAT String => foreign key table catalog (may be null)
+ * being exported (may be null)
+ *
FKTABLE_SCHEM String => foreign key table schema (may be null)
+ * being exported (may be null)
+ *
FKTABLE_NAME String => foreign key table name
+ * being exported
+ *
FKCOLUMN_NAME String => foreign key column name
+ * being exported
+ *
KEY_SEQ short => sequence number within foreign key
+ *
UPDATE_RULE short => What happens to
+ * foreign key when primary is updated:
+ *
importedKeyCascade - change imported key to agree
+ * with primary key update
+ *
importedKeyRestrict - do not allow update of primary
+ * key if it has been imported
+ *
importedKeySetNull - change imported key to NULL if
+ * its primary key has been updated
+ *
+ *
DELETE_RULE short => What happens to
+ * the foreign key when primary is deleted.
+ *
importedKeyCascade - delete rows that import a deleted key
+ *
importedKeyRestrict - do not allow delete of primary
+ * key if it has been imported
+ *
importedKeySetNull - change imported key to NULL if
+ * its primary key has been deleted
+ *
+ *
FK_NAME String => foreign key identifier (may be null)
+ *
PK_NAME String => primary key identifier (may be null)
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name pattern; "" retrieves those
+ * without a schema
+ * @param table a table name
+ * @return ResultSet each row is a foreign key column description
+ * @see #getImportedKeys
+ */
+ public java.sql.ResultSet getExportedKeys(String catalog, String schema, String table) throws SQLException
+ {
+ // XXX-Not Implemented
+ return null;
+ }
+
+ /**
+ * Get a description of the foreign key columns in the foreign key
+ * table that reference the primary key columns of the primary key
+ * table (describe how one table imports another's key.) This
+ * should normally return a single foreign key/primary key pair
+ * (most tables only import a foreign key from a table once.) They
+ * are ordered by FKTABLE_CAT, FKTABLE_SCHEM, FKTABLE_NAME, and
+ * KEY_SEQ.
+ *
+ *
Each foreign key column description has the following columns:
+ *
PKTABLE_CAT String => primary key table catalog (may be null)
+ *
PKTABLE_SCHEM String => primary key table schema (may be null)
+ *
PKTABLE_NAME String => primary key table name
+ *
PKCOLUMN_NAME String => primary key column name
+ *
FKTABLE_CAT String => foreign key table catalog (may be null)
+ * being exported (may be null)
+ *
FKTABLE_SCHEM String => foreign key table schema (may be null)
+ * being exported (may be null)
+ *
FKTABLE_NAME String => foreign key table name
+ * being exported
+ *
FKCOLUMN_NAME String => foreign key column name
+ * being exported
+ *
KEY_SEQ short => sequence number within foreign key
+ *
UPDATE_RULE short => What happens to
+ * foreign key when primary is updated:
+ *
importedKeyCascade - change imported key to agree
+ * with primary key update
+ *
importedKeyRestrict - do not allow update of primary
+ * key if it has been imported
+ *
importedKeySetNull - change imported key to NULL if
+ * its primary key has been updated
+ *
+ *
DELETE_RULE short => What happens to
+ * the foreign key when primary is deleted.
+ *
importedKeyCascade - delete rows that import a deleted key
+ *
importedKeyRestrict - do not allow delete of primary
+ * key if it has been imported
+ *
importedKeySetNull - change imported key to NULL if
+ * its primary key has been deleted
+ *
+ *
FK_NAME String => foreign key identifier (may be null)
+ *
PK_NAME String => primary key identifier (may be null)
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name pattern; "" retrieves those
+ * without a schema
+ * @param table a table name
+ * @return ResultSet each row is a foreign key column description
+ * @see #getImportedKeys
+ */
+ public java.sql.ResultSet getCrossReference(String primaryCatalog, String primarySchema, String primaryTable, String foreignCatalog, String foreignSchema, String foreignTable) throws SQLException
+ {
+ // XXX-Not Implemented
+ return null;
+ }
+
+ /**
+ * Get a description of all the standard SQL types supported by
+ * this database. They are ordered by DATA_TYPE and then by how
+ * closely the data type maps to the corresponding JDBC SQL type.
+ *
+ *
Each type description has the following columns:
+ *
TYPE_NAME String => Type name
+ *
DATA_TYPE short => SQL data type from java.sql.Types
+ *
PRECISION int => maximum precision
+ *
LITERAL_PREFIX String => prefix used to quote a literal
+ * (may be null)
+ *
LITERAL_SUFFIX String => suffix used to quote a literal
+ (may be null)
+ *
CREATE_PARAMS String => parameters used in creating
+ * the type (may be null)
+ *
NULLABLE short => can you use NULL for this type?
+ *
typeNoNulls - does not allow NULL values
+ *
typeNullable - allows NULL values
+ *
typeNullableUnknown - nullability unknown
+ *
+ *
CASE_SENSITIVE boolean=> is it case sensitive?
+ *
SEARCHABLE short => can you use "WHERE" based on this type:
+ *
typePredNone - No support
+ *
typePredChar - Only supported with WHERE .. LIKE
+ *
typePredBasic - Supported except for WHERE .. LIKE
+ *
typeSearchable - Supported for all WHERE ..
+ *
+ *
UNSIGNED_ATTRIBUTE boolean => is it unsigned?
+ *
FIXED_PREC_SCALE boolean => can it be a money value?
+ *
AUTO_INCREMENT boolean => can it be used for an
+ * auto-increment value?
+ *
LOCAL_TYPE_NAME String => localized version of type name
+ * (may be null)
+ *
MINIMUM_SCALE short => minimum scale supported
+ *
MAXIMUM_SCALE short => maximum scale supported
+ *
SQL_DATA_TYPE int => unused
+ *
SQL_DATETIME_SUB int => unused
+ *
NUM_PREC_RADIX int => usually 2 or 10
+ *
+ *
+ * @return ResultSet each row is a SQL type description
+ */
+ public java.sql.ResultSet getTypeInfo() throws SQLException
+ {
+ java.sql.ResultSet rs = connection.ExecSQL("select typname from pg_type");
+ if(rs!=null) {
+ Field f[] = new Field[18];
+ ResultSet r; // ResultSet for the SQL query that we need to do
+ Vector v = new Vector(); // The new ResultSet tuple stuff
+
+ f[0] = new Field(connection, new String("TYPE_NAME"), iVarcharOid, 32);
+ f[1] = new Field(connection, new String("DATA_TYPE"), iInt2Oid, 2);
+ f[2] = new Field(connection, new String("PRECISION"), iInt4Oid, 4);
+ f[3] = new Field(connection, new String("LITERAL_PREFIX"), iVarcharOid, 32);
+ f[4] = new Field(connection, new String("LITERAL_SUFFIX"), iVarcharOid, 32);
+ f[5] = new Field(connection, new String("CREATE_PARAMS"), iVarcharOid, 32);
+ f[6] = new Field(connection, new String("NULLABLE"), iInt2Oid, 2);
+ f[7] = new Field(connection, new String("CASE_SENSITIVE"), iBoolOid, 1);
+ f[8] = new Field(connection, new String("SEARCHABLE"), iInt2Oid, 2);
+ f[9] = new Field(connection, new String("UNSIGNED_ATTRIBUTE"), iBoolOid, 1);
+ f[10] = new Field(connection, new String("FIXED_PREC_SCALE"), iBoolOid, 1);
+ f[11] = new Field(connection, new String("AUTO_INCREMENT"), iBoolOid, 1);
+ f[12] = new Field(connection, new String("LOCAL_TYPE_NAME"), iVarcharOid, 32);
+ f[13] = new Field(connection, new String("MINIMUM_SCALE"), iInt2Oid, 2);
+ f[14] = new Field(connection, new String("MAXIMUM_SCALE"), iInt2Oid, 2);
+ f[15] = new Field(connection, new String("SQL_DATA_TYPE"), iInt4Oid, 4);
+ f[16] = new Field(connection, new String("SQL_DATETIME_SUB"), iInt4Oid, 4);
+ f[17] = new Field(connection, new String("NUM_PREC_RADIX"), iInt4Oid, 4);
+
+ // cache some results, this will keep memory useage down, and speed
+ // things up a little.
+ byte b9[] = "9".getBytes();
+ byte b10[] = "10".getBytes();
+ byte bf[] = "f".getBytes();
+ byte bnn[] = Integer.toString(typeNoNulls).getBytes();
+ byte bts[] = Integer.toString(typeSearchable).getBytes();
+
+ while(rs.next()) {
+ byte[][] tuple = new byte[18][];
+ String typname=rs.getString(1);
+ tuple[0] = typname.getBytes();
+ tuple[1] = Integer.toString(Field.getSQLType(typname)).getBytes();
+ tuple[2] = b9; // for now
+ tuple[6] = bnn; // for now
+ tuple[7] = bf; // false for now - not case sensitive
+ tuple[8] = bts;
+ tuple[9] = bf; // false for now - it's signed
+ tuple[10] = bf; // false for now - must handle money
+ tuple[11] = bf; // false for now - handle autoincrement
+ // 12 - LOCAL_TYPE_NAME is null
+ // 13 & 14 ?
+ // 15 & 16 are unused so we return null
+ tuple[17] = b10; // everything is base 10
+ v.addElement(tuple);
+ }
+ rs.close();
+ return new ResultSet(connection, f, v, "OK", 1);
+ }
+
+ return null;
+ }
+
+ /**
+ * Get a description of a table's indices and statistics. They are
+ * ordered by NON_UNIQUE, TYPE, INDEX_NAME, and ORDINAL_POSITION.
+ *
+ *
Each index column description has the following columns:
+ *
TABLE_CAT String => table catalog (may be null)
+ *
TABLE_SCHEM String => table schema (may be null)
+ *
TABLE_NAME String => table name
+ *
NON_UNIQUE boolean => Can index values be non-unique?
+ * false when TYPE is tableIndexStatistic
+ *
INDEX_QUALIFIER String => index catalog (may be null);
+ * null when TYPE is tableIndexStatistic
+ *
INDEX_NAME String => index name; null when TYPE is
+ * tableIndexStatistic
+ *
TYPE short => index type:
+ *
tableIndexStatistic - this identifies table statistics that are
+ * returned in conjuction with a table's index descriptions
+ *
tableIndexClustered - this is a clustered index
+ *
tableIndexHashed - this is a hashed index
+ *
tableIndexOther - this is some other style of index
+ *
+ *
ORDINAL_POSITION short => column sequence number
+ * within index; zero when TYPE is tableIndexStatistic
+ *
COLUMN_NAME String => column name; null when TYPE is
+ * tableIndexStatistic
+ *
ASC_OR_DESC String => column sort sequence, "A" => ascending
+ * "D" => descending, may be null if sort sequence is not supported;
+ * null when TYPE is tableIndexStatistic
+ *
CARDINALITY int => When TYPE is tableIndexStatisic then
+ * this is the number of rows in the table; otherwise it is the
+ * number of unique values in the index.
+ *
PAGES int => When TYPE is tableIndexStatisic then
+ * this is the number of pages used for the table, otherwise it
+ * is the number of pages used for the current index.
+ *
FILTER_CONDITION String => Filter condition, if any.
+ * (may be null)
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name pattern; "" retrieves those without a schema
+ * @param table a table name
+ * @param unique when true, return only indices for unique values;
+ * when false, return indices regardless of whether unique or not
+ * @param approximate when true, result is allowed to reflect approximate
+ * or out of data values; when false, results are requested to be
+ * accurate
+ * @return ResultSet each row is an index column description
+ */
+ // Implementation note: This is required for Borland's JBuilder to work
+ public java.sql.ResultSet getIndexInfo(String catalog, String schema, String table, boolean unique, boolean approximate) throws SQLException
+ {
+ // for now, this returns an empty result set.
+ Field f[] = new Field[13];
+ ResultSet r; // ResultSet for the SQL query that we need to do
+ Vector v = new Vector(); // The new ResultSet tuple stuff
+
+ f[0] = new Field(connection, new String("TABLE_CAT"), iVarcharOid, 32);
+ f[1] = new Field(connection, new String("TABLE_SCHEM"), iVarcharOid, 32);
+ f[2] = new Field(connection, new String("TABLE_NAME"), iVarcharOid, 32);
+ f[3] = new Field(connection, new String("NON_UNIQUE"), iBoolOid, 1);
+ f[4] = new Field(connection, new String("INDEX_QUALIFIER"), iVarcharOid, 32);
+ f[5] = new Field(connection, new String("INDEX_NAME"), iVarcharOid, 32);
+ f[6] = new Field(connection, new String("TYPE"), iInt2Oid, 2);
+ f[7] = new Field(connection, new String("ORDINAL_POSITION"), iInt2Oid, 2);
+ f[8] = new Field(connection, new String("COLUMN_NAME"), iVarcharOid, 32);
+ f[9] = new Field(connection, new String("ASC_OR_DESC"), iVarcharOid, 32);
+ f[10] = new Field(connection, new String("CARDINALITY"), iInt4Oid, 4);
+ f[11] = new Field(connection, new String("PAGES"), iInt4Oid, 4);
+ f[12] = new Field(connection, new String("FILTER_CONDITION"), iVarcharOid, 32);
+
+ return new ResultSet(connection, f, v, "OK", 1);
+ }
+}
+
--- /dev/null
+package org.postgresql.jdbc1;
+
+// IMPORTANT NOTE: This file implements the JDBC 1 version of the driver.
+// If you make any modifications to this file, you must make sure that the
+// changes are also made (if relevent) to the related JDBC 2 class in the
+// org.postgresql.jdbc2 package.
+
+import java.io.*;
+import java.math.*;
+import java.sql.*;
+import java.text.*;
+import java.util.*;
+import org.postgresql.largeobject.*;
+import org.postgresql.util.*;
+
+/**
+ * A SQL Statement is pre-compiled and stored in a PreparedStatement object.
+ * This object can then be used to efficiently execute this statement multiple
+ * times.
+ *
+ *
Note: The setXXX methods for setting IN parameter values must
+ * specify types that are compatible with the defined SQL type of the input
+ * parameter. For instance, if the IN parameter has SQL type Integer, then
+ * setInt should be used.
+ *
+ *
If arbitrary parameter type conversions are required, then the setObject
+ * method should be used with a target SQL type.
+ *
+ * @see ResultSet
+ * @see java.sql.PreparedStatement
+ */
+public class PreparedStatement extends Statement implements java.sql.PreparedStatement
+{
+ String sql;
+ String[] templateStrings;
+ String[] inStrings;
+ Connection connection;
+
+ /**
+ * Constructor for the PreparedStatement class.
+ * Split the SQL statement into segments - separated by the arguments.
+ * When we rebuild the thing with the arguments, we can substitute the
+ * args and join the whole thing together.
+ *
+ * @param conn the instanatiating connection
+ * @param sql the SQL statement with ? for IN markers
+ * @exception SQLException if something bad occurs
+ */
+ public PreparedStatement(Connection connection, String sql) throws SQLException
+ {
+ super(connection);
+
+ Vector v = new Vector();
+ boolean inQuotes = false;
+ int lastParmEnd = 0, i;
+
+ this.sql = sql;
+ this.connection = connection;
+ for (i = 0; i < sql.length(); ++i)
+ {
+ int c = sql.charAt(i);
+
+ if (c == '\'')
+ inQuotes = !inQuotes;
+ if (c == '?' && !inQuotes)
+ {
+ v.addElement(sql.substring (lastParmEnd, i));
+ lastParmEnd = i + 1;
+ }
+ }
+ v.addElement(sql.substring (lastParmEnd, sql.length()));
+
+ templateStrings = new String[v.size()];
+ inStrings = new String[v.size() - 1];
+ clearParameters();
+
+ for (i = 0 ; i < templateStrings.length; ++i)
+ templateStrings[i] = (String)v.elementAt(i);
+ }
+
+ /**
+ * A Prepared SQL query is executed and its ResultSet is returned
+ *
+ * @return a ResultSet that contains the data produced by the
+ * query - never null
+ * @exception SQLException if a database access error occurs
+ */
+ public java.sql.ResultSet executeQuery() throws SQLException
+ {
+ StringBuffer s = new StringBuffer();
+ int i;
+
+ for (i = 0 ; i < inStrings.length ; ++i)
+ {
+ if (inStrings[i] == null)
+ throw new PSQLException("postgresql.prep.param",new Integer(i + 1));
+ s.append (templateStrings[i]);
+ s.append (inStrings[i]);
+ }
+ s.append(templateStrings[inStrings.length]);
+ return super.executeQuery(s.toString()); // in Statement class
+ }
+
+ /**
+ * Execute a SQL INSERT, UPDATE or DELETE statement. In addition,
+ * SQL statements that return nothing such as SQL DDL statements can
+ * be executed.
+ *
+ * @return either the row count for INSERT, UPDATE or DELETE; or
+ * 0 for SQL statements that return nothing.
+ * @exception SQLException if a database access error occurs
+ */
+ public int executeUpdate() throws SQLException
+ {
+ StringBuffer s = new StringBuffer();
+ int i;
+
+ for (i = 0 ; i < inStrings.length ; ++i)
+ {
+ if (inStrings[i] == null)
+ throw new PSQLException("postgresql.prep.param",new Integer(i + 1));
+ s.append (templateStrings[i]);
+ s.append (inStrings[i]);
+ }
+ s.append(templateStrings[inStrings.length]);
+ return super.executeUpdate(s.toString()); // in Statement class
+ }
+
+ /**
+ * Set a parameter to SQL NULL
+ *
+ *
Note: You must specify the parameters SQL type (although
+ * PostgreSQL ignores it)
+ *
+ * @param parameterIndex the first parameter is 1, etc...
+ * @param sqlType the SQL type code defined in java.sql.Types
+ * @exception SQLException if a database access error occurs
+ */
+ public void setNull(int parameterIndex, int sqlType) throws SQLException
+ {
+ set(parameterIndex, "null");
+ }
+
+ /**
+ * Set a parameter to a Java boolean value. The driver converts this
+ * to a SQL BIT value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setBoolean(int parameterIndex, boolean x) throws SQLException
+ {
+ set(parameterIndex, x ? "'t'" : "'f'");
+ }
+
+ /**
+ * Set a parameter to a Java byte value. The driver converts this to
+ * a SQL TINYINT value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setByte(int parameterIndex, byte x) throws SQLException
+ {
+ set(parameterIndex, (new Integer(x)).toString());
+ }
+
+ /**
+ * Set a parameter to a Java short value. The driver converts this
+ * to a SQL SMALLINT value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setShort(int parameterIndex, short x) throws SQLException
+ {
+ set(parameterIndex, (new Integer(x)).toString());
+ }
+
+ /**
+ * Set a parameter to a Java int value. The driver converts this to
+ * a SQL INTEGER value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setInt(int parameterIndex, int x) throws SQLException
+ {
+ set(parameterIndex, (new Integer(x)).toString());
+ }
+
+ /**
+ * Set a parameter to a Java long value. The driver converts this to
+ * a SQL BIGINT value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setLong(int parameterIndex, long x) throws SQLException
+ {
+ set(parameterIndex, (new Long(x)).toString());
+ }
+
+ /**
+ * Set a parameter to a Java float value. The driver converts this
+ * to a SQL FLOAT value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setFloat(int parameterIndex, float x) throws SQLException
+ {
+ set(parameterIndex, (new Float(x)).toString());
+ }
+
+ /**
+ * Set a parameter to a Java double value. The driver converts this
+ * to a SQL DOUBLE value when it sends it to the database
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setDouble(int parameterIndex, double x) throws SQLException
+ {
+ set(parameterIndex, (new Double(x)).toString());
+ }
+
+ /**
+ * Set a parameter to a java.lang.BigDecimal value. The driver
+ * converts this to a SQL NUMERIC value when it sends it to the
+ * database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setBigDecimal(int parameterIndex, BigDecimal x) throws SQLException
+ {
+ set(parameterIndex, x.toString());
+ }
+
+ /**
+ * Set a parameter to a Java String value. The driver converts this
+ * to a SQL VARCHAR or LONGVARCHAR value (depending on the arguments
+ * size relative to the driver's limits on VARCHARs) when it sends it
+ * to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setString(int parameterIndex, String x) throws SQLException
+ {
+ // if the passed string is null, then set this column to null
+ if(x==null)
+ set(parameterIndex,"null");
+ else {
+ StringBuffer b = new StringBuffer();
+ int i;
+
+ b.append('\'');
+ for (i = 0 ; i < x.length() ; ++i)
+ {
+ char c = x.charAt(i);
+ if (c == '\\' || c == '\'')
+ b.append((char)'\\');
+ b.append(c);
+ }
+ b.append('\'');
+ set(parameterIndex, b.toString());
+ }
+ }
+
+ /**
+ * Set a parameter to a Java array of bytes. The driver converts this
+ * to a SQL VARBINARY or LONGVARBINARY (depending on the argument's
+ * size relative to the driver's limits on VARBINARYs) when it sends
+ * it to the database.
+ *
+ *
With org.postgresql, this creates a large object, and stores the
+ * objects oid in this column.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setBytes(int parameterIndex, byte x[]) throws SQLException
+ {
+ LargeObjectManager lom = connection.getLargeObjectAPI();
+ int oid = lom.create();
+ LargeObject lob = lom.open(oid);
+ lob.write(x);
+ lob.close();
+ setInt(parameterIndex,oid);
+ }
+
+ /**
+ * Set a parameter to a java.sql.Date value. The driver converts this
+ * to a SQL DATE value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setDate(int parameterIndex, java.sql.Date x) throws SQLException
+ {
+ SimpleDateFormat df = new SimpleDateFormat("''yyyy-MM-dd''");
+
+ set(parameterIndex, df.format(x));
+
+ // The above is how the date should be handled.
+ //
+ // However, in JDK's prior to 1.1.6 (confirmed with the
+ // Linux jdk1.1.3 and the Win95 JRE1.1.5), SimpleDateFormat seems
+ // to format a date to the previous day. So the fix is to add a day
+ // before formatting.
+ //
+ // PS: 86400000 is one day
+ //
+ //set(parameterIndex, df.format(new java.util.Date(x.getTime()+86400000)));
+ }
+
+ /**
+ * Set a parameter to a java.sql.Time value. The driver converts
+ * this to a SQL TIME value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...));
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setTime(int parameterIndex, Time x) throws SQLException
+ {
+ set(parameterIndex, "'" + x.toString() + "'");
+ }
+
+ /**
+ * Set a parameter to a java.sql.Timestamp value. The driver converts
+ * this to a SQL TIMESTAMP value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setTimestamp(int parameterIndex, Timestamp x) throws SQLException
+ {
+ set(parameterIndex, "'" + x.toString() + "'");
+ }
+
+ /**
+ * When a very large ASCII value is input to a LONGVARCHAR parameter,
+ * it may be more practical to send it via a java.io.InputStream.
+ * JDBC will read the data from the stream as needed, until it reaches
+ * end-of-file. The JDBC driver will do any necessary conversion from
+ * ASCII to the database char format.
+ *
+ *
Note: This stream object can either be a standard Java
+ * stream object or your own subclass that implements the standard
+ * interface.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @param length the number of bytes in the stream
+ * @exception SQLException if a database access error occurs
+ */
+ public void setAsciiStream(int parameterIndex, InputStream x, int length) throws SQLException
+ {
+ setBinaryStream(parameterIndex, x, length);
+ }
+
+ /**
+ * When a very large Unicode value is input to a LONGVARCHAR parameter,
+ * it may be more practical to send it via a java.io.InputStream.
+ * JDBC will read the data from the stream as needed, until it reaches
+ * end-of-file. The JDBC driver will do any necessary conversion from
+ * UNICODE to the database char format.
+ *
+ *
Note: This stream object can either be a standard Java
+ * stream object or your own subclass that implements the standard
+ * interface.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setUnicodeStream(int parameterIndex, InputStream x, int length) throws SQLException
+ {
+ setBinaryStream(parameterIndex, x, length);
+ }
+
+ /**
+ * When a very large binary value is input to a LONGVARBINARY parameter,
+ * it may be more practical to send it via a java.io.InputStream.
+ * JDBC will read the data from the stream as needed, until it reaches
+ * end-of-file.
+ *
+ *
Note: This stream object can either be a standard Java
+ * stream object or your own subclass that implements the standard
+ * interface.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setBinaryStream(int parameterIndex, InputStream x, int length) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ /**
+ * In general, parameter values remain in force for repeated used of a
+ * Statement. Setting a parameter value automatically clears its
+ * previous value. However, in coms cases, it is useful to immediately
+ * release the resources used by the current parameter values; this
+ * can be done by calling clearParameters
+ *
+ * @exception SQLException if a database access error occurs
+ */
+ public void clearParameters() throws SQLException
+ {
+ int i;
+
+ for (i = 0 ; i < inStrings.length ; i++)
+ inStrings[i] = null;
+ }
+
+ /**
+ * Set the value of a parameter using an object; use the java.lang
+ * equivalent objects for integral values.
+ *
+ *
The given Java object will be converted to the targetSqlType before
+ * being sent to the database.
+ *
+ *
note that this method may be used to pass database-specific
+ * abstract data types. This is done by using a Driver-specific
+ * Java type and using a targetSqlType of java.sql.Types.OTHER
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the object containing the input parameter value
+ * @param targetSqlType The SQL type to be send to the database
+ * @param scale For java.sql.Types.DECIMAL or java.sql.Types.NUMERIC
+ * types this is the number of digits after the decimal. For
+ * all other types this value will be ignored.
+ * @exception SQLException if a database access error occurs
+ */
+ public void setObject(int parameterIndex, Object x, int targetSqlType, int scale) throws SQLException
+ {
+ switch (targetSqlType)
+ {
+ case Types.TINYINT:
+ case Types.SMALLINT:
+ case Types.INTEGER:
+ case Types.BIGINT:
+ case Types.REAL:
+ case Types.FLOAT:
+ case Types.DOUBLE:
+ case Types.DECIMAL:
+ case Types.NUMERIC:
+ if (x instanceof Boolean)
+ set(parameterIndex, ((Boolean)x).booleanValue() ? "1" : "0");
+ else
+ set(parameterIndex, x.toString());
+ break;
+ case Types.CHAR:
+ case Types.VARCHAR:
+ case Types.LONGVARCHAR:
+ setString(parameterIndex, x.toString());
+ break;
+ case Types.DATE:
+ setDate(parameterIndex, (java.sql.Date)x);
+ break;
+ case Types.TIME:
+ setTime(parameterIndex, (Time)x);
+ break;
+ case Types.TIMESTAMP:
+ setTimestamp(parameterIndex, (Timestamp)x);
+ break;
+ case Types.OTHER:
+ setString(parameterIndex, ((PGobject)x).getValue());
+ break;
+ default:
+ throw new PSQLException("postgresql.prep.type");
+ }
+ }
+
+ public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException
+ {
+ setObject(parameterIndex, x, targetSqlType, 0);
+ }
+
+ /**
+ * This stores an Object into a parameter.
+ *
New for 6.4, if the object is not recognised, but it is
+ * Serializable, then the object is serialised using the
+ * org.postgresql.util.Serialize class.
+ */
+ public void setObject(int parameterIndex, Object x) throws SQLException
+ {
+ if (x instanceof String)
+ setString(parameterIndex, (String)x);
+ else if (x instanceof BigDecimal)
+ setBigDecimal(parameterIndex, (BigDecimal)x);
+ else if (x instanceof Short)
+ setShort(parameterIndex, ((Short)x).shortValue());
+ else if (x instanceof Integer)
+ setInt(parameterIndex, ((Integer)x).intValue());
+ else if (x instanceof Long)
+ setLong(parameterIndex, ((Long)x).longValue());
+ else if (x instanceof Float)
+ setFloat(parameterIndex, ((Float)x).floatValue());
+ else if (x instanceof Double)
+ setDouble(parameterIndex, ((Double)x).doubleValue());
+ else if (x instanceof byte[])
+ setBytes(parameterIndex, (byte[])x);
+ else if (x instanceof java.sql.Date)
+ setDate(parameterIndex, (java.sql.Date)x);
+ else if (x instanceof Time)
+ setTime(parameterIndex, (Time)x);
+ else if (x instanceof Timestamp)
+ setTimestamp(parameterIndex, (Timestamp)x);
+ else if (x instanceof Boolean)
+ setBoolean(parameterIndex, ((Boolean)x).booleanValue());
+ else if (x instanceof PGobject)
+ setString(parameterIndex, ((PGobject)x).getValue());
+ else
+ setLong(parameterIndex, connection.putObject(x));
+ }
+
+ /**
+ * Some prepared statements return multiple results; the execute method
+ * handles these complex statements as well as the simpler form of
+ * statements handled by executeQuery and executeUpdate
+ *
+ * @return true if the next result is a ResultSet; false if it is an
+ * update count or there are no more results
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean execute() throws SQLException
+ {
+ StringBuffer s = new StringBuffer();
+ int i;
+
+ for (i = 0 ; i < inStrings.length ; ++i)
+ {
+ if (inStrings[i] == null)
+ throw new PSQLException("postgresql.prep.param",new Integer(i + 1));
+ s.append (templateStrings[i]);
+ s.append (inStrings[i]);
+ }
+ s.append(templateStrings[inStrings.length]);
+ return super.execute(s.toString()); // in Statement class
+ }
+
+ /**
+ * Returns the SQL statement with the current template values
+ * substituted.
+ */
+ public String toString() {
+ StringBuffer s = new StringBuffer();
+ int i;
+
+ for (i = 0 ; i < inStrings.length ; ++i)
+ {
+ if (inStrings[i] == null)
+ s.append( '?' );
+ else
+ s.append (templateStrings[i]);
+ s.append (inStrings[i]);
+ }
+ s.append(templateStrings[inStrings.length]);
+ return s.toString();
+ }
+
+ // **************************************************************
+ // END OF PUBLIC INTERFACE
+ // **************************************************************
+
+ /**
+ * There are a lot of setXXX classes which all basically do
+ * the same thing. We need a method which actually does the
+ * set for us.
+ *
+ * @param paramIndex the index into the inString
+ * @param s a string to be stored
+ * @exception SQLException if something goes wrong
+ */
+ private void set(int paramIndex, String s) throws SQLException
+ {
+ if (paramIndex < 1 || paramIndex > inStrings.length)
+ throw new PSQLException("postgresql.prep.range");
+ inStrings[paramIndex - 1] = s;
+ }
+}
--- /dev/null
+package org.postgresql.jdbc1;
+
+// IMPORTANT NOTE: This file implements the JDBC 1 version of the driver.
+// If you make any modifications to this file, you must make sure that the
+// changes are also made (if relevent) to the related JDBC 2 class in the
+// org.postgresql.jdbc2 package.
+
+import java.lang.*;
+import java.io.*;
+import java.math.*;
+import java.text.*;
+import java.util.*;
+import java.sql.*;
+import org.postgresql.Field;
+import org.postgresql.largeobject.*;
+import org.postgresql.util.*;
+
+/**
+ * A ResultSet provides access to a table of data generated by executing a
+ * Statement. The table rows are retrieved in sequence. Within a row its
+ * column values can be accessed in any order.
+ *
+ *
A ResultSet maintains a cursor pointing to its current row of data.
+ * Initially the cursor is positioned before the first row. The 'next'
+ * method moves the cursor to the next row.
+ *
+ *
The getXXX methods retrieve column values for the current row. You can
+ * retrieve values either using the index number of the column, or by using
+ * the name of the column. In general using the column index will be more
+ * efficient. Columns are numbered from 1.
+ *
+ *
For maximum portability, ResultSet columns within each row should be read
+ * in left-to-right order and each column should be read only once.
+ *
+ *
For the getXXX methods, the JDBC driver attempts to convert the
+ * underlying data to the specified Java type and returns a suitable Java
+ * value. See the JDBC specification for allowable mappings from SQL types
+ * to Java types with the ResultSet getXXX methods.
+ *
+ *
Column names used as input to getXXX methods are case insenstive. When
+ * performing a getXXX using a column name, if several columns have the same
+ * name, then the value of the first matching column will be returned. The
+ * column name option is designed to be used when column names are used in the
+ * SQL Query. For columns that are NOT explicitly named in the query, it is
+ * best to use column numbers. If column names were used there is no way for
+ * the programmer to guarentee that they actually refer to the intended
+ * columns.
+ *
+ *
A ResultSet is automatically closed by the Statement that generated it
+ * when that Statement is closed, re-executed, or is used to retrieve the
+ * next result from a sequence of multiple results.
+ *
+ *
The number, types and properties of a ResultSet's columns are provided by
+ * the ResultSetMetaData object returned by the getMetaData method.
+ *
+ * @see ResultSetMetaData
+ * @see java.sql.ResultSet
+ */
+public class ResultSet extends org.postgresql.ResultSet implements java.sql.ResultSet
+{
+ /**
+ * Create a new ResultSet - Note that we create ResultSets to
+ * represent the results of everything.
+ *
+ * @param fields an array of Field objects (basically, the
+ * ResultSet MetaData)
+ * @param tuples Vector of the actual data
+ * @param status the status string returned from the back end
+ * @param updateCount the number of rows affected by the operation
+ * @param cursor the positioned update/delete cursor name
+ */
+ public ResultSet(Connection conn, Field[] fields, Vector tuples, String status, int updateCount)
+ {
+ super(conn,fields,tuples,status,updateCount);
+ }
+
+ /**
+ * A ResultSet is initially positioned before its first row,
+ * the first call to next makes the first row the current row;
+ * the second call makes the second row the current row, etc.
+ *
+ *
If an input stream from the previous row is open, it is
+ * implicitly closed. The ResultSet's warning chain is cleared
+ * when a new row is read
+ *
+ * @return true if the new current is valid; false if there are no
+ * more rows
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean next() throws SQLException
+ {
+ if (++current_row >= rows.size())
+ return false;
+ this_row = (byte [][])rows.elementAt(current_row);
+ return true;
+ }
+
+ /**
+ * In some cases, it is desirable to immediately release a ResultSet
+ * database and JDBC resources instead of waiting for this to happen
+ * when it is automatically closed. The close method provides this
+ * immediate release.
+ *
+ *
Note: A ResultSet is automatically closed by the Statement
+ * the Statement that generated it when that Statement is closed,
+ * re-executed, or is used to retrieve the next result from a sequence
+ * of multiple results. A ResultSet is also automatically closed
+ * when it is garbage collected.
+ *
+ * @exception SQLException if a database access error occurs
+ */
+ public void close() throws SQLException
+ {
+ // No-op
+ }
+
+ /**
+ * A column may have the value of SQL NULL; wasNull() reports whether
+ * the last column read had this special value. Note that you must
+ * first call getXXX on a column to try to read its value and then
+ * call wasNull() to find if the value was SQL NULL
+ *
+ * @return true if the last column read was SQL NULL
+ * @exception SQLException if a database access error occurred
+ */
+ public boolean wasNull() throws SQLException
+ {
+ return wasNullFlag;
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java String
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return the column value, null for SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public String getString(int columnIndex) throws SQLException
+ {
+ //byte[] bytes = getBytes(columnIndex);
+ //
+ //if (bytes == null)
+ //return null;
+ //return new String(bytes);
+ if (columnIndex < 1 || columnIndex > fields.length)
+ throw new PSQLException("postgresql.res.colrange");
+ wasNullFlag = (this_row[columnIndex - 1] == null);
+ if(wasNullFlag)
+ return null;
+ return new String(this_row[columnIndex - 1]);
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java boolean
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return the column value, false for SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean getBoolean(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ int c = s.charAt(0);
+ return ((c == 't') || (c == 'T'));
+ }
+ return false; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java byte.
+ *
+ * @param columnIndex the first column is 1, the second is 2,...
+ * @return the column value; 0 if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public byte getByte(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ try
+ {
+ return Byte.parseByte(s);
+ } catch (NumberFormatException e) {
+ throw new PSQLException("postgresql.res.badbyte",s);
+ }
+ }
+ return 0; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java short.
+ *
+ * @param columnIndex the first column is 1, the second is 2,...
+ * @return the column value; 0 if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public short getShort(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ try
+ {
+ return Short.parseShort(s);
+ } catch (NumberFormatException e) {
+ throw new PSQLException("postgresql.res.badshort",s);
+ }
+ }
+ return 0; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java int.
+ *
+ * @param columnIndex the first column is 1, the second is 2,...
+ * @return the column value; 0 if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public int getInt(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ try
+ {
+ return Integer.parseInt(s);
+ } catch (NumberFormatException e) {
+ throw new PSQLException ("postgresql.badint",s);
+ }
+ }
+ return 0; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java long.
+ *
+ * @param columnIndex the first column is 1, the second is 2,...
+ * @return the column value; 0 if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public long getLong(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ try
+ {
+ return Long.parseLong(s);
+ } catch (NumberFormatException e) {
+ throw new PSQLException ("postgresql.res.badlong",s);
+ }
+ }
+ return 0; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java float.
+ *
+ * @param columnIndex the first column is 1, the second is 2,...
+ * @return the column value; 0 if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public float getFloat(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ try
+ {
+ return Float.valueOf(s).floatValue();
+ } catch (NumberFormatException e) {
+ throw new PSQLException ("postgresql.res.badfloat",s);
+ }
+ }
+ return 0; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java double.
+ *
+ * @param columnIndex the first column is 1, the second is 2,...
+ * @return the column value; 0 if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public double getDouble(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ try
+ {
+ return Double.valueOf(s).doubleValue();
+ } catch (NumberFormatException e) {
+ throw new PSQLException ("postgresql.res.baddouble",s);
+ }
+ }
+ return 0; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a
+ * java.math.BigDecimal object
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @param scale the number of digits to the right of the decimal
+ * @return the column value; if the value is SQL NULL, null
+ * @exception SQLException if a database access error occurs
+ */
+ public BigDecimal getBigDecimal(int columnIndex, int scale) throws SQLException
+ {
+ String s = getString(columnIndex);
+ BigDecimal val;
+
+ if (s != null)
+ {
+ try
+ {
+ val = new BigDecimal(s);
+ } catch (NumberFormatException e) {
+ throw new PSQLException ("postgresql.res.badbigdec",s);
+ }
+ try
+ {
+ return val.setScale(scale);
+ } catch (ArithmeticException e) {
+ throw new PSQLException ("postgresql.res.badbigdec",s);
+ }
+ }
+ return null; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java byte array.
+ *
+ *
In normal use, the bytes represent the raw values returned by the
+ * backend. However, if the column is an OID, then it is assumed to
+ * refer to a Large Object, and that object is returned as a byte array.
+ *
+ *
Be warned If the large object is huge, then you may run out
+ * of memory.
+ *
+ * @param columnIndex the first column is 1, the second is 2, ...
+ * @return the column value; if the value is SQL NULL, the result
+ * is null
+ * @exception SQLException if a database access error occurs
+ */
+ public byte[] getBytes(int columnIndex) throws SQLException
+ {
+ if (columnIndex < 1 || columnIndex > fields.length)
+ throw new PSQLException("postgresql.res.colrange");
+ wasNullFlag = (this_row[columnIndex - 1] == null);
+
+ // Handle OID's as BLOBS
+ if(!wasNullFlag)
+ if( fields[columnIndex - 1].getOID() == 26) {
+ LargeObjectManager lom = connection.getLargeObjectAPI();
+ LargeObject lob = lom.open(getInt(columnIndex));
+ byte buf[] = lob.read(lob.size());
+ lob.close();
+ return buf;
+ }
+
+ return this_row[columnIndex - 1];
+ }
+
+ /**
+ * Get the value of a column in the current row as a java.sql.Date
+ * object
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return the column value; null if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public java.sql.Date getDate(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+ if(s==null)
+ return null;
+ SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
+ try {
+ return new java.sql.Date(df.parse(s).getTime());
+ } catch (ParseException e) {
+ throw new PSQLException("postgresql.res.baddate",new Integer(e.getErrorOffset()),s);
+ }
+ }
+
+ /**
+ * Get the value of a column in the current row as a java.sql.Time
+ * object
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return the column value; null if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public Time getTime(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ try
+ {
+ if (s.length() != 5 && s.length() != 8)
+ throw new NumberFormatException("Wrong Length!");
+ int hr = Integer.parseInt(s.substring(0,2));
+ int min = Integer.parseInt(s.substring(3,5));
+ int sec = (s.length() == 5) ? 0 : Integer.parseInt(s.substring(6));
+ return new Time(hr, min, sec);
+ } catch (NumberFormatException e) {
+ throw new PSQLException ("postgresql.res.badtime",s);
+ }
+ }
+ return null; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a
+ * java.sql.Timestamp object
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return the column value; null if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public Timestamp getTimestamp(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+ if(s==null)
+ return null;
+
+ SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:sszzz");
+
+ try {
+ return new Timestamp(df.parse(s).getTime());
+ } catch(ParseException e) {
+ throw new PSQLException("postgresql.res.badtimestamp",new Integer(e.getErrorOffset()),s);
+ }
+ }
+
+ /**
+ * A column value can be retrieved as a stream of ASCII characters
+ * and then read in chunks from the stream. This method is
+ * particular suitable for retrieving large LONGVARCHAR values.
+ * The JDBC driver will do any necessary conversion from the
+ * database format into ASCII.
+ *
+ *
Note: All the data in the returned stream must be read
+ * prior to getting the value of any other column. The next call
+ * to a get method implicitly closes the stream. Also, a stream
+ * may return 0 for available() whether there is data available
+ * or not.
+ *
+ *
We implement an ASCII stream as a Binary stream - we should really
+ * do the data conversion, but I cannot be bothered to implement this
+ * right now.
+ *
+ * @param columnIndex the first column is 1, the second is 2, ...
+ * @return a Java InputStream that delivers the database column
+ * value as a stream of one byte ASCII characters. If the
+ * value is SQL NULL then the result is null
+ * @exception SQLException if a database access error occurs
+ * @see getBinaryStream
+ */
+ public InputStream getAsciiStream(int columnIndex) throws SQLException
+ {
+ return getBinaryStream(columnIndex);
+ }
+
+ /**
+ * A column value can also be retrieved as a stream of Unicode
+ * characters. We implement this as a binary stream.
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return a Java InputStream that delivers the database column value
+ * as a stream of two byte Unicode characters. If the value is
+ * SQL NULL, then the result is null
+ * @exception SQLException if a database access error occurs
+ * @see getAsciiStream
+ * @see getBinaryStream
+ */
+ public InputStream getUnicodeStream(int columnIndex) throws SQLException
+ {
+ return getBinaryStream(columnIndex);
+ }
+
+ /**
+ * A column value can also be retrieved as a binary strea. This
+ * method is suitable for retrieving LONGVARBINARY values.
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return a Java InputStream that delivers the database column value
+ * as a stream of bytes. If the value is SQL NULL, then the result
+ * is null
+ * @exception SQLException if a database access error occurs
+ * @see getAsciiStream
+ * @see getUnicodeStream
+ */
+ public InputStream getBinaryStream(int columnIndex) throws SQLException
+ {
+ byte b[] = getBytes(columnIndex);
+
+ if (b != null)
+ return new ByteArrayInputStream(b);
+ return null; // SQL NULL
+ }
+
+ /**
+ * The following routines simply convert the columnName into
+ * a columnIndex and then call the appropriate routine above.
+ *
+ * @param columnName is the SQL name of the column
+ * @return the column value
+ * @exception SQLException if a database access error occurs
+ */
+ public String getString(String columnName) throws SQLException
+ {
+ return getString(findColumn(columnName));
+ }
+
+ public boolean getBoolean(String columnName) throws SQLException
+ {
+ return getBoolean(findColumn(columnName));
+ }
+
+ public byte getByte(String columnName) throws SQLException
+ {
+
+ return getByte(findColumn(columnName));
+ }
+
+ public short getShort(String columnName) throws SQLException
+ {
+ return getShort(findColumn(columnName));
+ }
+
+ public int getInt(String columnName) throws SQLException
+ {
+ return getInt(findColumn(columnName));
+ }
+
+ public long getLong(String columnName) throws SQLException
+ {
+ return getLong(findColumn(columnName));
+ }
+
+ public float getFloat(String columnName) throws SQLException
+ {
+ return getFloat(findColumn(columnName));
+ }
+
+ public double getDouble(String columnName) throws SQLException
+ {
+ return getDouble(findColumn(columnName));
+ }
+
+ public BigDecimal getBigDecimal(String columnName, int scale) throws SQLException
+ {
+ return getBigDecimal(findColumn(columnName), scale);
+ }
+
+ public byte[] getBytes(String columnName) throws SQLException
+ {
+ return getBytes(findColumn(columnName));
+ }
+
+ public java.sql.Date getDate(String columnName) throws SQLException
+ {
+ return getDate(findColumn(columnName));
+ }
+
+ public Time getTime(String columnName) throws SQLException
+ {
+ return getTime(findColumn(columnName));
+ }
+
+ public Timestamp getTimestamp(String columnName) throws SQLException
+ {
+ return getTimestamp(findColumn(columnName));
+ }
+
+ public InputStream getAsciiStream(String columnName) throws SQLException
+ {
+ return getAsciiStream(findColumn(columnName));
+ }
+
+ public InputStream getUnicodeStream(String columnName) throws SQLException
+ {
+ return getUnicodeStream(findColumn(columnName));
+ }
+
+ public InputStream getBinaryStream(String columnName) throws SQLException
+ {
+ return getBinaryStream(findColumn(columnName));
+ }
+
+ /**
+ * The first warning reported by calls on this ResultSet is
+ * returned. Subsequent ResultSet warnings will be chained
+ * to this SQLWarning.
+ *
+ *
The warning chain is automatically cleared each time a new
+ * row is read.
+ *
+ *
Note: This warning chain only covers warnings caused by
+ * ResultSet methods. Any warnings caused by statement methods
+ * (such as reading OUT parameters) will be chained on the
+ * Statement object.
+ *
+ * @return the first SQLWarning or null;
+ * @exception SQLException if a database access error occurs.
+ */
+ public SQLWarning getWarnings() throws SQLException
+ {
+ return warnings;
+ }
+
+ /**
+ * After this call, getWarnings returns null until a new warning
+ * is reported for this ResultSet
+ *
+ * @exception SQLException if a database access error occurs
+ */
+ public void clearWarnings() throws SQLException
+ {
+ warnings = null;
+ }
+
+ /**
+ * Get the name of the SQL cursor used by this ResultSet
+ *
+ *
In SQL, a result table is retrieved though a cursor that is
+ * named. The current row of a result can be updated or deleted
+ * using a positioned update/delete statement that references
+ * the cursor name.
+ *
+ *
JDBC supports this SQL feature by providing the name of the
+ * SQL cursor used by a ResultSet. The current row of a ResulSet
+ * is also the current row of this SQL cursor.
+ *
+ *
Note: If positioned update is not supported, a SQLException
+ * is thrown.
+ *
+ * @return the ResultSet's SQL cursor name.
+ * @exception SQLException if a database access error occurs
+ */
+ public String getCursorName() throws SQLException
+ {
+ return connection.getCursorName();
+ }
+
+ /**
+ * The numbers, types and properties of a ResultSet's columns are
+ * provided by the getMetaData method
+ *
+ * @return a description of the ResultSet's columns
+ * @exception SQLException if a database access error occurs
+ */
+ public java.sql.ResultSetMetaData getMetaData() throws SQLException
+ {
+ return new ResultSetMetaData(rows, fields);
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java object
+ *
+ *
This method will return the value of the given column as a
+ * Java object. The type of the Java object will be the default
+ * Java Object type corresponding to the column's SQL type, following
+ * the mapping specified in the JDBC specification.
+ *
+ *
This method may also be used to read database specific abstract
+ * data types.
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return a Object holding the column value
+ * @exception SQLException if a database access error occurs
+ */
+ public Object getObject(int columnIndex) throws SQLException
+ {
+ Field field;
+
+ if (columnIndex < 1 || columnIndex > fields.length)
+ throw new PSQLException("postgresql.res.colrange");
+ field = fields[columnIndex - 1];
+
+ // some fields can be null, mainly from those returned by MetaData methods
+ if(field==null) {
+ wasNullFlag=true;
+ return null;
+ }
+
+ switch (field.getSQLType())
+ {
+ case Types.BIT:
+ return new Boolean(getBoolean(columnIndex));
+ case Types.SMALLINT:
+ return new Integer(getInt(columnIndex));
+ case Types.INTEGER:
+ return new Integer(getInt(columnIndex));
+ case Types.BIGINT:
+ return new Long(getLong(columnIndex));
+ case Types.NUMERIC:
+ return getBigDecimal(columnIndex, ((field.mod-4) & 0xffff));
+ case Types.REAL:
+ return new Float(getFloat(columnIndex));
+ case Types.DOUBLE:
+ return new Double(getDouble(columnIndex));
+ case Types.CHAR:
+ case Types.VARCHAR:
+ return getString(columnIndex);
+ case Types.DATE:
+ return getDate(columnIndex);
+ case Types.TIME:
+ return getTime(columnIndex);
+ case Types.TIMESTAMP:
+ return getTimestamp(columnIndex);
+ default:
+ return connection.getObject(field.getTypeName(), getString(columnIndex));
+ }
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java object
+ *
+ *
This method will return the value of the given column as a
+ * Java object. The type of the Java object will be the default
+ * Java Object type corresponding to the column's SQL type, following
+ * the mapping specified in the JDBC specification.
+ *
+ *
This method may also be used to read database specific abstract
+ * data types.
+ *
+ * @param columnName is the SQL name of the column
+ * @return a Object holding the column value
+ * @exception SQLException if a database access error occurs
+ */
+ public Object getObject(String columnName) throws SQLException
+ {
+ return getObject(findColumn(columnName));
+ }
+
+ /**
+ * Map a ResultSet column name to a ResultSet column index
+ *
+ * @param columnName the name of the column
+ * @return the column index
+ * @exception SQLException if a database access error occurs
+ */
+ public int findColumn(String columnName) throws SQLException
+ {
+ int i;
+
+ for (i = 0 ; i < fields.length; ++i)
+ if (fields[i].name.equalsIgnoreCase(columnName))
+ return (i+1);
+ throw new PSQLException ("postgresql.res.colname",columnName);
+ }
+}
+
--- /dev/null
+package org.postgresql.jdbc1;
+
+// IMPORTANT NOTE: This file implements the JDBC 1 version of the driver.
+// If you make any modifications to this file, you must make sure that the
+// changes are also made (if relevent) to the related JDBC 2 class in the
+// org.postgresql.jdbc2 package.
+
+import java.lang.*;
+import java.util.*;
+import org.postgresql.*;
+import org.postgresql.util.*;
+
+// We explicitly import classes here as the original line:
+//import java.sql.*;
+// causes javac to get confused.
+import java.sql.SQLException;
+import java.sql.Types;
+
+/**
+ * A ResultSetMetaData object can be used to find out about the types and
+ * properties of the columns in a ResultSet
+ *
+ * @see java.sql.ResultSetMetaData
+ */
+public class ResultSetMetaData implements java.sql.ResultSetMetaData
+{
+ Vector rows;
+ Field[] fields;
+
+ /**
+ * Initialise for a result with a tuple set and
+ * a field descriptor set
+ *
+ * @param rows the Vector of rows returned by the ResultSet
+ * @param fields the array of field descriptors
+ */
+ public ResultSetMetaData(Vector rows, Field[] fields)
+ {
+ this.rows = rows;
+ this.fields = fields;
+ }
+
+ /**
+ * Whats the number of columns in the ResultSet?
+ *
+ * @return the number
+ * @exception SQLException if a database access error occurs
+ */
+ public int getColumnCount() throws SQLException
+ {
+ return fields.length;
+ }
+
+ /**
+ * Is the column automatically numbered (and thus read-only)
+ * I believe that PostgreSQL does not support this feature.
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isAutoIncrement(int column) throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Does a column's case matter? ASSUMPTION: Any field that is
+ * not obviously case insensitive is assumed to be case sensitive
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isCaseSensitive(int column) throws SQLException
+ {
+ int sql_type = getField(column).getSQLType();
+
+ switch (sql_type)
+ {
+ case Types.SMALLINT:
+ case Types.INTEGER:
+ case Types.FLOAT:
+ case Types.REAL:
+ case Types.DOUBLE:
+ case Types.DATE:
+ case Types.TIME:
+ case Types.TIMESTAMP:
+ return false;
+ default:
+ return true;
+ }
+ }
+
+ /**
+ * Can the column be used in a WHERE clause? Basically for
+ * this, I split the functions into two types: recognised
+ * types (which are always useable), and OTHER types (which
+ * may or may not be useable). The OTHER types, for now, I
+ * will assume they are useable. We should really query the
+ * catalog to see if they are useable.
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return true if they can be used in a WHERE clause
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isSearchable(int column) throws SQLException
+ {
+ int sql_type = getField(column).getSQLType();
+
+ // This switch is pointless, I know - but it is a set-up
+ // for further expansion.
+ switch (sql_type)
+ {
+ case Types.OTHER:
+ return true;
+ default:
+ return true;
+ }
+ }
+
+ /**
+ * Is the column a cash value? 6.1 introduced the cash/money
+ * type, which haven't been incorporated as of 970414, so I
+ * just check the type name for both 'cash' and 'money'
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return true if its a cash column
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isCurrency(int column) throws SQLException
+ {
+ String type_name = getField(column).getTypeName();
+
+ return type_name.equals("cash") || type_name.equals("money");
+ }
+
+ /**
+ * Can you put a NULL in this column? I think this is always
+ * true in 6.1's case. It would only be false if the field had
+ * been defined NOT NULL (system catalogs could be queried?)
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return one of the columnNullable values
+ * @exception SQLException if a database access error occurs
+ */
+ public int isNullable(int column) throws SQLException
+ {
+ return columnNullable; // We can always put NULL in
+ }
+
+ /**
+ * Is the column a signed number? In PostgreSQL, all numbers
+ * are signed, so this is trivial. However, strings are not
+ * signed (duh!)
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isSigned(int column) throws SQLException
+ {
+ int sql_type = getField(column).getSQLType();
+
+ switch (sql_type)
+ {
+ case Types.SMALLINT:
+ case Types.INTEGER:
+ case Types.FLOAT:
+ case Types.REAL:
+ case Types.DOUBLE:
+ return true;
+ case Types.DATE:
+ case Types.TIME:
+ case Types.TIMESTAMP:
+ return false; // I don't know about these?
+ default:
+ return false;
+ }
+ }
+
+ /**
+ * What is the column's normal maximum width in characters?
+ *
+ * @param column the first column is 1, the second is 2, etc.
+ * @return the maximum width
+ * @exception SQLException if a database access error occurs
+ */
+ public int getColumnDisplaySize(int column) throws SQLException
+ {
+ Field f = getField(column);
+ String type_name = f.getTypeName();
+ int sql_type = f.getSQLType();
+ int typmod = f.mod;
+
+ // I looked at other JDBC implementations and couldn't find a consistent
+ // interpretation of the "display size" for numeric values, so this is our's
+ // FIXME: currently, only types with a SQL92 or SQL3 pendant are implemented -
[email protected]+
+ // fixed length data types
+ if (type_name.equals( "int2" )) return 6; // -32768 to +32768 (5 digits and a sign)
+ if (type_name.equals( "int4" )
+ || type_name.equals( "oid" )) return 11; // -2147483648 to +2147483647
+ if (type_name.equals( "int8" )) return 20; // -9223372036854775808 to +9223372036854775807
+ if (type_name.equals( "money" )) return 12; // MONEY = DECIMAL(9,2)
+ if (type_name.equals( "float4" )) return 11; // i checked it out ans wasn't able to produce more than 11 digits
+ if (type_name.equals( "float8" )) return 20; // dito, 20
+ if (type_name.equals( "char" )) return 1;
+ if (type_name.equals( "bool" )) return 1;
+ if (type_name.equals( "date" )) return 14; // "01/01/4713 BC" - "31/12/32767 AD"
+ if (type_name.equals( "time" )) return 8; // 00:00:00-23:59:59
+ if (type_name.equals( "timestamp" )) return 22; // hhmmm ... the output looks like this: 1999-08-03 22:22:08+02
+
+ // variable length fields
+ typmod -= 4;
+ if (type_name.equals( "bpchar" )
+ || type_name.equals( "varchar" )) return typmod; // VARHDRSZ=sizeof(int32)=4
+ if (type_name.equals( "numeric" )) return ( (typmod >>16) & 0xffff )
+ + 1 + ( typmod & 0xffff ); // DECIMAL(p,s) = (p digits).(s digits)
+
+ // if we don't know better
+ return f.length;
+ }
+
+ /**
+ * What is the suggested column title for use in printouts and
+ * displays? We suggest the ColumnName!
+ *
+ * @param column the first column is 1, the second is 2, etc.
+ * @return the column label
+ * @exception SQLException if a database access error occurs
+ */
+ public String getColumnLabel(int column) throws SQLException
+ {
+ return getColumnName(column);
+ }
+
+ /**
+ * What's a column's name?
+ *
+ * @param column the first column is 1, the second is 2, etc.
+ * @return the column name
+ * @exception SQLException if a database access error occurs
+ */
+ public String getColumnName(int column) throws SQLException
+ {
+ Field f = getField(column);
+ if(f!=null)
+ return f.name;
+ return "field"+column;
+ }
+
+ /**
+ * What is a column's table's schema? This relies on us knowing
+ * the table name....which I don't know how to do as yet. The
+ * JDBC specification allows us to return "" if this is not
+ * applicable.
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return the Schema
+ * @exception SQLException if a database access error occurs
+ */
+ public String getSchemaName(int column) throws SQLException
+ {
+ return "";
+ }
+
+ /**
+ * What is a column's number of decimal digits.
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return the precision
+ * @exception SQLException if a database access error occurs
+ */
+ public int getPrecision(int column) throws SQLException
+ {
+ int sql_type = getField(column).getSQLType();
+
+ switch (sql_type)
+ {
+ case Types.SMALLINT:
+ return 5;
+ case Types.INTEGER:
+ return 10;
+ case Types.REAL:
+ return 8;
+ case Types.FLOAT:
+ return 16;
+ case Types.DOUBLE:
+ return 16;
+ case Types.VARCHAR:
+ return 0;
+ default:
+ return 0;
+ }
+ }
+
+ /**
+ * What is a column's number of digits to the right of the
+ * decimal point?
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return the scale
+ * @exception SQLException if a database access error occurs
+ */
+ public int getScale(int column) throws SQLException
+ {
+ int sql_type = getField(column).getSQLType();
+
+ switch (sql_type)
+ {
+ case Types.SMALLINT:
+ return 0;
+ case Types.INTEGER:
+ return 0;
+ case Types.REAL:
+ return 8;
+ case Types.FLOAT:
+ return 16;
+ case Types.DOUBLE:
+ return 16;
+ case Types.VARCHAR:
+ return 0;
+ default:
+ return 0;
+ }
+ }
+
+ /**
+ * Whats a column's table's name? How do I find this out? Both
+ * getSchemaName() and getCatalogName() rely on knowing the table
+ * Name, so we need this before we can work on them.
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return column name, or "" if not applicable
+ * @exception SQLException if a database access error occurs
+ */
+ public String getTableName(int column) throws SQLException
+ {
+ return "";
+ }
+
+ /**
+ * What's a column's table's catalog name? As with getSchemaName(),
+ * we can say that if getTableName() returns n/a, then we can too -
+ * otherwise, we need to work on it.
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return catalog name, or "" if not applicable
+ * @exception SQLException if a database access error occurs
+ */
+ public String getCatalogName(int column) throws SQLException
+ {
+ return "";
+ }
+
+ /**
+ * What is a column's SQL Type? (java.sql.Type int)
+ *
+ * @param column the first column is 1, the second is 2, etc.
+ * @return the java.sql.Type value
+ * @exception SQLException if a database access error occurs
+ * @see org.postgresql.Field#getSQLType
+ * @see java.sql.Types
+ */
+ public int getColumnType(int column) throws SQLException
+ {
+ return getField(column).getSQLType();
+ }
+
+ /**
+ * Whats is the column's data source specific type name?
+ *
+ * @param column the first column is 1, the second is 2, etc.
+ * @return the type name
+ * @exception SQLException if a database access error occurs
+ */
+ public String getColumnTypeName(int column) throws SQLException
+ {
+ return getField(column).getTypeName();
+ }
+
+ /**
+ * Is the column definitely not writable? In reality, we would
+ * have to check the GRANT/REVOKE stuff for this to be effective,
+ * and I haven't really looked into that yet, so this will get
+ * re-visited.
+ *
+ * @param column the first column is 1, the second is 2, etc.
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isReadOnly(int column) throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Is it possible for a write on the column to succeed? Again, we
+ * would in reality have to check the GRANT/REVOKE stuff, which
+ * I haven't worked with as yet. However, if it isn't ReadOnly, then
+ * it is obviously writable.
+ *
+ * @param column the first column is 1, the second is 2, etc.
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isWritable(int column) throws SQLException
+ {
+ if (isReadOnly(column))
+ return true;
+ else
+ return false;
+ }
+
+ /**
+ * Will a write on this column definately succeed? Hmmm...this
+ * is a bad one, since the two preceding functions have not been
+ * really defined. I cannot tell is the short answer. I thus
+ * return isWritable() just to give us an idea.
+ *
+ * @param column the first column is 1, the second is 2, etc..
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isDefinitelyWritable(int column) throws SQLException
+ {
+ return isWritable(column);
+ }
+
+ // ********************************************************
+ // END OF PUBLIC INTERFACE
+ // ********************************************************
+
+ /**
+ * For several routines in this package, we need to convert
+ * a columnIndex into a Field[] descriptor. Rather than do
+ * the same code several times, here it is.
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return the Field description
+ * @exception SQLException if a database access error occurs
+ */
+ private Field getField(int columnIndex) throws SQLException
+ {
+ if (columnIndex < 1 || columnIndex > fields.length)
+ throw new PSQLException("postgresql.res.colrange");
+ return fields[columnIndex - 1];
+ }
+}
+
--- /dev/null
+package org.postgresql.jdbc1;
+
+// IMPORTANT NOTE: This file implements the JDBC 1 version of the driver.
+// If you make any modifications to this file, you must make sure that the
+// changes are also made (if relevent) to the related JDBC 2 class in the
+// org.postgresql.jdbc2 package.
+
+import java.sql.*;
+
+import org.postgresql.util.PSQLException;
+
+/**
+ * A Statement object is used for executing a static SQL statement and
+ * obtaining the results produced by it.
+ *
+ *
Only one ResultSet per Statement can be open at any point in time.
+ * Therefore, if the reading of one ResultSet is interleaved with the
+ * reading of another, each must have been generated by different
+ * Statements. All statement execute methods implicitly close a
+ * statement's current ResultSet if an open one exists.
+ *
+ * @see java.sql.Statement
+ * @see ResultSet
+ */
+public class Statement implements java.sql.Statement
+{
+ Connection connection; // The connection who created us
+ java.sql.ResultSet result = null; // The current results
+ SQLWarning warnings = null; // The warnings chain.
+ int timeout = 0; // The timeout for a query (not used)
+ boolean escapeProcessing = true;// escape processing flag
+
+ /**
+ * Constructor for a Statement. It simply sets the connection
+ * that created us.
+ *
+ * @param c the Connection instantation that creates us
+ */
+ public Statement (Connection c)
+ {
+ connection = c;
+ }
+
+ /**
+ * Execute a SQL statement that retruns a single ResultSet
+ *
+ * @param sql typically a static SQL SELECT statement
+ * @return a ResulSet that contains the data produced by the query
+ * @exception SQLException if a database access error occurs
+ */
+ public java.sql.ResultSet executeQuery(String sql) throws SQLException
+ {
+ this.execute(sql);
+ while (result != null && !((org.postgresql.ResultSet)result).reallyResultSet())
+ result = ((org.postgresql.ResultSet)result).getNext();
+ if (result == null)
+ throw new PSQLException("postgresql.stat.noresult");
+ return result;
+ }
+
+ /**
+ * Execute a SQL INSERT, UPDATE or DELETE statement. In addition
+ * SQL statements that return nothing such as SQL DDL statements
+ * can be executed
+ *
+ * @param sql a SQL statement
+ * @return either a row count, or 0 for SQL commands
+ * @exception SQLException if a database access error occurs
+ */
+ public int executeUpdate(String sql) throws SQLException
+ {
+ this.execute(sql);
+ if (((org.postgresql.ResultSet)result).reallyResultSet())
+ throw new PSQLException("postgresql.stat.result");
+ return this.getUpdateCount();
+ }
+
+ /**
+ * In many cases, it is desirable to immediately release a
+ * Statement's database and JDBC resources instead of waiting
+ * for this to happen when it is automatically closed. The
+ * close method provides this immediate release.
+ *
+ *
Note: A Statement is automatically closed when it is
+ * garbage collected. When a Statement is closed, its current
+ * ResultSet, if one exists, is also closed.
+ *
+ * @exception SQLException if a database access error occurs (why?)
+ */
+ public void close() throws SQLException
+ {
+ result = null;
+ }
+
+ /**
+ * The maxFieldSize limit (in bytes) is the maximum amount of
+ * data returned for any column value; it only applies to
+ * BINARY, VARBINARY, LONGVARBINARY, CHAR, VARCHAR and LONGVARCHAR
+ * columns. If the limit is exceeded, the excess data is silently
+ * discarded.
+ *
+ * @return the current max column size limit; zero means unlimited
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxFieldSize() throws SQLException
+ {
+ return 8192; // We cannot change this
+ }
+
+ /**
+ * Sets the maxFieldSize - NOT! - We throw an SQLException just
+ * to inform them to stop doing this.
+ *
+ * @param max the new max column size limit; zero means unlimited
+ * @exception SQLException if a database access error occurs
+ */
+ public void setMaxFieldSize(int max) throws SQLException
+ {
+ throw new PSQLException("postgresql.stat.maxfieldsize");
+ }
+
+ /**
+ * The maxRows limit is set to limit the number of rows that
+ * any ResultSet can contain. If the limit is exceeded, the
+ * excess rows are silently dropped.
+ *
+ * @return the current maximum row limit; zero means unlimited
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxRows() throws SQLException
+ {
+ return connection.maxrows;
+ }
+
+ /**
+ * Set the maximum number of rows
+ *
+ * @param max the new max rows limit; zero means unlimited
+ * @exception SQLException if a database access error occurs
+ * @see getMaxRows
+ */
+ public void setMaxRows(int max) throws SQLException
+ {
+ connection.maxrows = max;
+ }
+
+ /**
+ * If escape scanning is on (the default), the driver will do escape
+ * substitution before sending the SQL to the database.
+ *
+ * @param enable true to enable; false to disable
+ * @exception SQLException if a database access error occurs
+ */
+ public void setEscapeProcessing(boolean enable) throws SQLException
+ {
+ escapeProcessing = enable;
+ }
+
+ /**
+ * The queryTimeout limit is the number of seconds the driver
+ * will wait for a Statement to execute. If the limit is
+ * exceeded, a SQLException is thrown.
+ *
+ * @return the current query timeout limit in seconds; 0 = unlimited
+ * @exception SQLException if a database access error occurs
+ */
+ public int getQueryTimeout() throws SQLException
+ {
+ return timeout;
+ }
+
+ /**
+ * Sets the queryTimeout limit
+ *
+ * @param seconds - the new query timeout limit in seconds
+ * @exception SQLException if a database access error occurs
+ */
+ public void setQueryTimeout(int seconds) throws SQLException
+ {
+ timeout = seconds;
+ }
+
+ /**
+ * Cancel can be used by one thread to cancel a statement that
+ * is being executed by another thread. However, PostgreSQL is
+ * a sync. sort of thing, so this really has no meaning - we
+ * define it as a no-op (i.e. you can't cancel, but there is no
+ * error if you try.)
+ *
+ * 6.4 introduced a cancel operation, but we have not implemented it
+ * yet. Sometime before 6.5, this method will be implemented.
+ *
+ * @exception SQLException only because thats the spec.
+ */
+ public void cancel() throws SQLException
+ {
+ // No-op
+ }
+
+ /**
+ * The first warning reported by calls on this Statement is
+ * returned. A Statement's execute methods clear its SQLWarning
+ * chain. Subsequent Statement warnings will be chained to this
+ * SQLWarning.
+ *
+ *
The Warning chain is automatically cleared each time a statement
+ * is (re)executed.
+ *
+ *
Note: If you are processing a ResultSet then any warnings
+ * associated with ResultSet reads will be chained on the ResultSet
+ * object.
+ *
+ * @return the first SQLWarning on null
+ * @exception SQLException if a database access error occurs
+ */
+ public SQLWarning getWarnings() throws SQLException
+ {
+ return warnings;
+ }
+
+ /**
+ * After this call, getWarnings returns null until a new warning
+ * is reported for this Statement.
+ *
+ * @exception SQLException if a database access error occurs (why?)
+ */
+ public void clearWarnings() throws SQLException
+ {
+ warnings = null;
+ }
+
+ /**
+ * setCursorName defines the SQL cursor name that will be used by
+ * subsequent execute methods. This name can then be used in SQL
+ * positioned update/delete statements to identify the current row
+ * in the ResultSet generated by this statement. If a database
+ * doesn't support positioned update/delete, this method is a
+ * no-op.
+ *
+ *
Note: By definition, positioned update/delete execution
+ * must be done by a different Statement than the one which
+ * generated the ResultSet being used for positioning. Also, cursor
+ * names must be unique within a Connection.
+ *
+ *
We throw an additional constriction. There can only be one
+ * cursor active at any one time.
+ *
+ * @param name the new cursor name
+ * @exception SQLException if a database access error occurs
+ */
+ public void setCursorName(String name) throws SQLException
+ {
+ connection.setCursorName(name);
+ }
+
+ /**
+ * Execute a SQL statement that may return multiple results. We
+ * don't have to worry about this since we do not support multiple
+ * ResultSets. You can use getResultSet or getUpdateCount to
+ * retrieve the result.
+ *
+ * @param sql any SQL statement
+ * @return true if the next result is a ResulSet, false if it is
+ * an update count or there are no more results
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean execute(String sql) throws SQLException
+ {
+ result = connection.ExecSQL(sql);
+ return (result != null && ((org.postgresql.ResultSet)result).reallyResultSet());
+ }
+
+ /**
+ * getResultSet returns the current result as a ResultSet. It
+ * should only be called once per result.
+ *
+ * @return the current result set; null if there are no more
+ * @exception SQLException if a database access error occurs (why?)
+ */
+ public java.sql.ResultSet getResultSet() throws SQLException
+ {
+ return result;
+ }
+
+ /**
+ * getUpdateCount returns the current result as an update count,
+ * if the result is a ResultSet or there are no more results, -1
+ * is returned. It should only be called once per result.
+ *
+ * @return the current result as an update count.
+ * @exception SQLException if a database access error occurs
+ */
+ public int getUpdateCount() throws SQLException
+ {
+ if (result == null) return -1;
+ if (((org.postgresql.ResultSet)result).reallyResultSet()) return -1;
+ return ((org.postgresql.ResultSet)result).getResultCount();
+ }
+
+ /**
+ * getMoreResults moves to a Statement's next result. If it returns
+ * true, this result is a ResulSet.
+ *
+ * @return true if the next ResultSet is valid
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean getMoreResults() throws SQLException
+ {
+ result = ((org.postgresql.ResultSet)result).getNext();
+ return (result != null && ((org.postgresql.ResultSet)result).reallyResultSet());
+ }
+
+ /**
+ * Returns the status message from the current Result.
+ * This is used internally by the driver.
+ *
+ * @return status message from backend
+ */
+ public String getResultStatusString()
+ {
+ if(result == null)
+ return null;
+ return ((org.postgresql.ResultSet)result).getStatusString();
+ }
+}
--- /dev/null
+package org.postgresql.jdbc2;
+
+// IMPORTANT NOTE: This file implements the JDBC 2 version of the driver.
+// If you make any modifications to this file, you must make sure that the
+// changes are also made (if relevent) to the related JDBC 1 class in the
+// org.postgresql.jdbc1 package.
+
+import java.sql.*;
+import java.math.*;
+
+/**
+ * CallableStatement is used to execute SQL stored procedures.
+ *
+ *
JDBC provides a stored procedure SQL escape that allows stored
+ * procedures to be called in a standard way for all RDBMS's. This escape
+ * syntax has one form that includes a result parameter and one that does
+ * not. If used, the result parameter must be registered as an OUT
+ * parameter. The other parameters may be used for input, output or both.
+ * Parameters are refered to sequentially, by number. The first parameter
+ * is 1.
+ *
+ *
+ *
+ *
IN parameter values are set using the set methods inherited from
+ * PreparedStatement. The type of all OUT parameters must be registered
+ * prior to executing the stored procedure; their values are retrieved
+ * after execution via the get methods provided here.
+ *
+ *
A Callable statement may return a ResultSet or multiple ResultSets.
+ * Multiple ResultSets are handled using operations inherited from
+ * Statement.
+ *
+ *
For maximum portability, a call's ResultSets and update counts should
+ * be processed prior to getting the values of output parameters.
+ *
+ * @see Connection#prepareCall
+ * @see ResultSet
+ */
+
+public class CallableStatement extends org.postgresql.jdbc2.PreparedStatement implements java.sql.CallableStatement
+{
+ /**
+ * @exception SQLException on failure
+ */
+ public CallableStatement(Connection c,String q) throws SQLException
+ {
+ super(c,q);
+ }
+
+ /**
+ * Before executing a stored procedure call you must explicitly
+ * call registerOutParameter to register the java.sql.Type of each
+ * out parameter.
+ *
+ *
Note: When reading the value of an out parameter, you must use
+ * the getXXX method whose Java type XXX corresponds to the
+ * parameter's registered SQL type.
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @param sqlType SQL type code defined by java.sql.Types; for
+ * parameters of type Numeric or Decimal use the version of
+ * registerOutParameter that accepts a scale value
+ * @exception SQLException if a database-access error occurs.
+ */
+ public void registerOutParameter(int parameterIndex, int sqlType) throws SQLException {
+ }
+
+ /**
+ * You must also specify the scale for numeric/decimal types:
+ *
+ *
Note: When reading the value of an out parameter, you must use
+ * the getXXX method whose Java type XXX corresponds to the
+ * parameter's registered SQL type.
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @param sqlType use either java.sql.Type.NUMERIC or java.sql.Type.DECIMAL
+ * @param scale a value greater than or equal to zero representing the
+ * desired number of digits to the right of the decimal point
+ * @exception SQLException if a database-access error occurs.
+ */
+ public void registerOutParameter(int parameterIndex, int sqlType,
+ int scale) throws SQLException
+ {
+ }
+
+ // Old api?
+ //public boolean isNull(int parameterIndex) throws SQLException {
+ //return true;
+ //}
+
+ /**
+ * An OUT parameter may have the value of SQL NULL; wasNull
+ * reports whether the last value read has this special value.
+ *
+ *
Note: You must first call getXXX on a parameter to read its
+ * value and then call wasNull() to see if the value was SQL NULL.
+ * @return true if the last parameter read was SQL NULL
+ * @exception SQLException if a database-access error occurs.
+ */
+ public boolean wasNull() throws SQLException {
+ // check to see if the last access threw an exception
+ return false; // fake it for now
+ }
+
+ // Old api?
+ //public String getChar(int parameterIndex) throws SQLException {
+ //return null;
+ //}
+
+ /**
+ * Get the value of a CHAR, VARCHAR, or LONGVARCHAR parameter as a
+ * Java String.
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @return the parameter value; if the value is SQL NULL, the result is null
+ * @exception SQLException if a database-access error occurs.
+ */
+ public String getString(int parameterIndex) throws SQLException {
+ return null;
+ }
+ //public String getVarChar(int parameterIndex) throws SQLException {
+ // return null;
+ //}
+
+ //public String getLongVarChar(int parameterIndex) throws SQLException {
+ //return null;
+ //}
+
+ /**
+ * Get the value of a BIT parameter as a Java boolean.
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @return the parameter value; if the value is SQL NULL, the result is false
+ * @exception SQLException if a database-access error occurs.
+ */
+ public boolean getBoolean(int parameterIndex) throws SQLException {
+ return false;
+ }
+
+ /**
+ * Get the value of a TINYINT parameter as a Java byte.
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @return the parameter value; if the value is SQL NULL, the result is 0
+ * @exception SQLException if a database-access error occurs.
+ */
+ public byte getByte(int parameterIndex) throws SQLException {
+ return 0;
+ }
+
+ /**
+ * Get the value of a SMALLINT parameter as a Java short.
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @return the parameter value; if the value is SQL NULL, the result is 0
+ * @exception SQLException if a database-access error occurs.
+ */
+ public short getShort(int parameterIndex) throws SQLException {
+ return 0;
+ }
+
+ /**
+ * Get the value of an INTEGER parameter as a Java int.
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @return the parameter value; if the value is SQL NULL, the result is 0
+ * @exception SQLException if a database-access error occurs.
+ */
+public int getInt(int parameterIndex) throws SQLException {
+ return 0;
+ }
+
+ /**
+ * Get the value of a BIGINT parameter as a Java long.
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @return the parameter value; if the value is SQL NULL, the result is 0
+ * @exception SQLException if a database-access error occurs.
+ */
+ public long getLong(int parameterIndex) throws SQLException {
+ return 0;
+ }
+
+ /**
+ * Get the value of a FLOAT parameter as a Java float.
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @return the parameter value; if the value is SQL NULL, the result is 0
+ * @exception SQLException if a database-access error occurs.
+ */
+ public float getFloat(int parameterIndex) throws SQLException {
+ return (float) 0.0;
+ }
+
+ /**
+ * Get the value of a DOUBLE parameter as a Java double.
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @return the parameter value; if the value is SQL NULL, the result is 0
+ * @exception SQLException if a database-access error occurs.
+ */
+ public double getDouble(int parameterIndex) throws SQLException {
+ return 0.0;
+ }
+
+ /**
+ * Get the value of a NUMERIC parameter as a java.math.BigDecimal
+ * object.
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @param scale a value greater than or equal to zero representing the
+ * desired number of digits to the right of the decimal point
+ * @return the parameter value; if the value is SQL NULL, the result is null
+ * @exception SQLException if a database-access error occurs.
+ */
+ public BigDecimal getBigDecimal(int parameterIndex, int scale)
+ throws SQLException {
+ return null;
+ }
+
+ /**
+ * Get the value of a SQL BINARY or VARBINARY parameter as a Java
+ * byte[]
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @return the parameter value; if the value is SQL NULL, the result is null
+ * @exception SQLException if a database-access error occurs.
+ */
+ public byte[] getBytes(int parameterIndex) throws SQLException {
+ return null;
+ }
+
+ // New API (JPM) (getLongVarBinary)
+ //public byte[] getBinaryStream(int parameterIndex) throws SQLException {
+ //return null;
+ //}
+
+ /**
+ * Get the value of a SQL DATE parameter as a java.sql.Date object
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @return the parameter value; if the value is SQL NULL, the result is null
+ * @exception SQLException if a database-access error occurs.
+ */
+ public java.sql.Date getDate(int parameterIndex) throws SQLException {
+ return null;
+ }
+
+ /**
+ * Get the value of a SQL TIME parameter as a java.sql.Time object.
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @return the parameter value; if the value is SQL NULL, the result is null
+ * @exception SQLException if a database-access error occurs.
+ */
+ public java.sql.Time getTime(int parameterIndex) throws SQLException {
+ return null;
+ }
+
+ /**
+ * Get the value of a SQL TIMESTAMP parameter as a java.sql.Timestamp object.
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @return the parameter value; if the value is SQL NULL, the result is null
+ * @exception SQLException if a database-access error occurs.
+ */
+ public java.sql.Timestamp getTimestamp(int parameterIndex)
+ throws SQLException {
+ return null;
+ }
+
+ //----------------------------------------------------------------------
+ // Advanced features:
+
+ // You can obtain a ParameterMetaData object to get information
+ // about the parameters to this CallableStatement.
+ //public DatabaseMetaData getMetaData() {
+ //return null;
+ //}
+
+ // getObject returns a Java object for the parameter.
+ // See the JDBC spec's "Dynamic Programming" chapter for details.
+ /**
+ * Get the value of a parameter as a Java object.
+ *
+ *
This method returns a Java object whose type coresponds to the
+ * SQL type that was registered for this parameter using
+ * registerOutParameter.
+ *
+ *
Note that this method may be used to read datatabase-specific,
+ * abstract data types. This is done by specifying a targetSqlType
+ * of java.sql.types.OTHER, which allows the driver to return a
+ * database-specific Java type.
+ *
+ *
See the JDBC spec's "Dynamic Programming" chapter for details.
+ *
+ * @param parameterIndex the first parameter is 1, the second is 2,...
+ * @return A java.lang.Object holding the OUT parameter value.
+ * @exception SQLException if a database-access error occurs.
+ */
+ public Object getObject(int parameterIndex)
+ throws SQLException {
+ return null;
+ }
+
+ // ** JDBC 2 Extensions **
+
+ public Array getArray(int i) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public java.math.BigDecimal getBigDecimal(int i) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public Blob getBlob(int i) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public Clob getClob(int i) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public Object getObject(int i,java.util.Map map) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public Ref getRef(int i) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public java.sql.Date getDate(int i,java.util.Calendar cal) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public Time getTime(int i,java.util.Calendar cal) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public Timestamp getTimestamp(int i,java.util.Calendar cal) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void registerOutParameter(int parameterIndex, int sqlType,String typeName) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+}
+
--- /dev/null
+package org.postgresql.jdbc2;
+
+// IMPORTANT NOTE: This file implements the JDBC 2 version of the driver.
+// If you make any modifications to this file, you must make sure that the
+// changes are also made (if relevent) to the related JDBC 1 class in the
+// org.postgresql.jdbc1 package.
+
+import java.io.*;
+import java.lang.*;
+import java.lang.reflect.*;
+import java.net.*;
+import java.util.*;
+import java.sql.*;
+import org.postgresql.Field;
+import org.postgresql.fastpath.*;
+import org.postgresql.largeobject.*;
+import org.postgresql.util.*;
+
+/**
+ * $Id: Connection.java,v 1.1 2000/04/17 20:07:50 peter Exp $
+ *
+ * A Connection represents a session with a specific database. Within the
+ * context of a Connection, SQL statements are executed and results are
+ * returned.
+ *
+ *
A Connection's database is able to provide information describing
+ * its tables, its supported SQL grammar, its stored procedures, the
+ * capabilities of this connection, etc. This information is obtained
+ * with the getMetaData method.
+ *
+ *
Note: By default, the Connection automatically commits changes
+ * after executing each statement. If auto-commit has been disabled, an
+ * explicit commit must be done or database changes will not be saved.
+ *
+ * @see java.sql.Connection
+ */
+public class Connection extends org.postgresql.Connection implements java.sql.Connection
+{
+ // This is a cache of the DatabaseMetaData instance for this connection
+ protected DatabaseMetaData metadata;
+
+ /**
+ * SQL statements without parameters are normally executed using
+ * Statement objects. If the same SQL statement is executed many
+ * times, it is more efficient to use a PreparedStatement
+ *
+ * @return a new Statement object
+ * @exception SQLException passed through from the constructor
+ */
+ public java.sql.Statement createStatement() throws SQLException
+ {
+ return new Statement(this);
+ }
+
+ /**
+ * A SQL statement with or without IN parameters can be pre-compiled
+ * and stored in a PreparedStatement object. This object can then
+ * be used to efficiently execute this statement multiple times.
+ *
+ * Note: This method is optimized for handling parametric
+ * SQL statements that benefit from precompilation if the drivers
+ * supports precompilation. PostgreSQL does not support precompilation.
+ * In this case, the statement is not sent to the database until the
+ * PreparedStatement is executed. This has no direct effect on users;
+ * however it does affect which method throws certain SQLExceptions
+ *
+ * @param sql a SQL statement that may contain one or more '?' IN
+ * parameter placeholders
+ * @return a new PreparedStatement object containing the pre-compiled
+ * statement.
+ * @exception SQLException if a database access error occurs.
+ */
+ public java.sql.PreparedStatement prepareStatement(String sql) throws SQLException
+ {
+ return new PreparedStatement(this, sql);
+ }
+
+ /**
+ * A SQL stored procedure call statement is handled by creating a
+ * CallableStatement for it. The CallableStatement provides methods
+ * for setting up its IN and OUT parameters and methods for executing
+ * it.
+ *
+ * Note: This method is optimised for handling stored procedure
+ * call statements. Some drivers may send the call statement to the
+ * database when the prepareCall is done; others may wait until the
+ * CallableStatement is executed. This has no direct effect on users;
+ * however, it does affect which method throws certain SQLExceptions
+ *
+ * @param sql a SQL statement that may contain one or more '?' parameter
+ * placeholders. Typically this statement is a JDBC function call
+ * escape string.
+ * @return a new CallableStatement object containing the pre-compiled
+ * SQL statement
+ * @exception SQLException if a database access error occurs
+ */
+ public java.sql.CallableStatement prepareCall(String sql) throws SQLException
+ {
+ throw new PSQLException("postgresql.con.call");
+ // return new CallableStatement(this, sql);
+ }
+
+ /**
+ * A driver may convert the JDBC sql grammar into its system's
+ * native SQL grammar prior to sending it; nativeSQL returns the
+ * native form of the statement that the driver would have sent.
+ *
+ * @param sql a SQL statement that may contain one or more '?'
+ * parameter placeholders
+ * @return the native form of this statement
+ * @exception SQLException if a database access error occurs
+ */
+ public String nativeSQL(String sql) throws SQLException
+ {
+ return sql;
+ }
+
+ /**
+ * If a connection is in auto-commit mode, than all its SQL
+ * statements will be executed and committed as individual
+ * transactions. Otherwise, its SQL statements are grouped
+ * into transactions that are terminated by either commit()
+ * or rollback(). By default, new connections are in auto-
+ * commit mode. The commit occurs when the statement completes
+ * or the next execute occurs, whichever comes first. In the
+ * case of statements returning a ResultSet, the statement
+ * completes when the last row of the ResultSet has been retrieved
+ * or the ResultSet has been closed. In advanced cases, a single
+ * statement may return multiple results as well as output parameter
+ * values. Here the commit occurs when all results and output param
+ * values have been retrieved.
+ *
+ * @param autoCommit - true enables auto-commit; false disables it
+ * @exception SQLException if a database access error occurs
+ */
+ public void setAutoCommit(boolean autoCommit) throws SQLException
+ {
+ if (this.autoCommit == autoCommit)
+ return;
+ if (autoCommit)
+ ExecSQL("end");
+ else
+ ExecSQL("begin");
+ this.autoCommit = autoCommit;
+ }
+
+ /**
+ * gets the current auto-commit state
+ *
+ * @return Current state of the auto-commit mode
+ * @exception SQLException (why?)
+ * @see setAutoCommit
+ */
+ public boolean getAutoCommit() throws SQLException
+ {
+ return this.autoCommit;
+ }
+
+ /**
+ * The method commit() makes all changes made since the previous
+ * commit/rollback permanent and releases any database locks currently
+ * held by the Connection. This method should only be used when
+ * auto-commit has been disabled. (If autoCommit == true, then we
+ * just return anyhow)
+ *
+ * @exception SQLException if a database access error occurs
+ * @see setAutoCommit
+ */
+ public void commit() throws SQLException
+ {
+ if (autoCommit)
+ return;
+ ExecSQL("commit");
+ autoCommit = true;
+ ExecSQL("begin");
+ autoCommit = false;
+ }
+
+ /**
+ * The method rollback() drops all changes made since the previous
+ * commit/rollback and releases any database locks currently held by
+ * the Connection.
+ *
+ * @exception SQLException if a database access error occurs
+ * @see commit
+ */
+ public void rollback() throws SQLException
+ {
+ if (autoCommit)
+ return;
+ ExecSQL("rollback");
+ autoCommit = true;
+ ExecSQL("begin");
+ autoCommit = false;
+ }
+
+ /**
+ * In some cases, it is desirable to immediately release a Connection's
+ * database and JDBC resources instead of waiting for them to be
+ * automatically released (cant think why off the top of my head)
+ *
+ * Note: A Connection is automatically closed when it is
+ * garbage collected. Certain fatal errors also result in a closed
+ * connection.
+ *
+ * @exception SQLException if a database access error occurs
+ */
+ public void close() throws SQLException
+ {
+ if (pg_stream != null)
+ {
+ try
+ {
+ pg_stream.close();
+ } catch (IOException e) {}
+ pg_stream = null;
+ }
+ }
+
+ /**
+ * Tests to see if a Connection is closed
+ *
+ * @return the status of the connection
+ * @exception SQLException (why?)
+ */
+ public boolean isClosed() throws SQLException
+ {
+ return (pg_stream == null);
+ }
+
+ /**
+ * A connection's database is able to provide information describing
+ * its tables, its supported SQL grammar, its stored procedures, the
+ * capabilities of this connection, etc. This information is made
+ * available through a DatabaseMetaData object.
+ *
+ * @return a DatabaseMetaData object for this connection
+ * @exception SQLException if a database access error occurs
+ */
+ public java.sql.DatabaseMetaData getMetaData() throws SQLException
+ {
+ if(metadata==null)
+ metadata = new DatabaseMetaData(this);
+ return metadata;
+ }
+
+ /**
+ * You can put a connection in read-only mode as a hunt to enable
+ * database optimizations
+ *
+ * Note: setReadOnly cannot be called while in the middle
+ * of a transaction
+ *
+ * @param readOnly - true enables read-only mode; false disables it
+ * @exception SQLException if a database access error occurs
+ */
+ public void setReadOnly (boolean readOnly) throws SQLException
+ {
+ this.readOnly = readOnly;
+ }
+
+ /**
+ * Tests to see if the connection is in Read Only Mode. Note that
+ * we cannot really put the database in read only mode, but we pretend
+ * we can by returning the value of the readOnly flag
+ *
+ * @return true if the connection is read only
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isReadOnly() throws SQLException
+ {
+ return readOnly;
+ }
+
+ /**
+ * A sub-space of this Connection's database may be selected by
+ * setting a catalog name. If the driver does not support catalogs,
+ * it will silently ignore this request
+ *
+ * @exception SQLException if a database access error occurs
+ */
+ public void setCatalog(String catalog) throws SQLException
+ {
+ // No-op
+ }
+
+ /**
+ * Return the connections current catalog name, or null if no
+ * catalog name is set, or we dont support catalogs.
+ *
+ * @return the current catalog name or null
+ * @exception SQLException if a database access error occurs
+ */
+ public String getCatalog() throws SQLException
+ {
+ return null;
+ }
+
+ /**
+ * You can call this method to try to change the transaction
+ * isolation level using one of the TRANSACTION_* values.
+ *
+ * Note: setTransactionIsolation cannot be called while
+ * in the middle of a transaction
+ *
+ * @param level one of the TRANSACTION_* isolation values with
+ * the exception of TRANSACTION_NONE; some databases may
+ * not support other values
+ * @exception SQLException if a database access error occurs
+ * @see java.sql.DatabaseMetaData#supportsTransactionIsolationLevel
+ */
+ public void setTransactionIsolation(int level) throws SQLException
+ {
+ String q = "SET TRANSACTION ISOLATION LEVEL";
+
+ switch(level) {
+
+ case java.sql.Connection.TRANSACTION_READ_COMMITTED:
+ ExecSQL(q + " READ COMMITTED");
+ return;
+
+ case java.sql.Connection.TRANSACTION_SERIALIZABLE:
+ ExecSQL(q + " SERIALIZABLE");
+ return;
+
+ default:
+ throw new PSQLException("postgresql.con.isolevel",new Integer(level));
+ }
+ }
+
+ /**
+ * Get this Connection's current transaction isolation mode.
+ *
+ * @return the current TRANSACTION_* mode value
+ * @exception SQLException if a database access error occurs
+ */
+ public int getTransactionIsolation() throws SQLException
+ {
+ ExecSQL("show xactisolevel");
+
+ SQLWarning w = getWarnings();
+ if (w != null) {
+ if (w.getMessage().indexOf("READ COMMITTED") != -1) return java.sql.Connection.TRANSACTION_READ_COMMITTED; else
+ if (w.getMessage().indexOf("READ UNCOMMITTED") != -1) return java.sql.Connection.TRANSACTION_READ_UNCOMMITTED; else
+ if (w.getMessage().indexOf("REPEATABLE READ") != -1) return java.sql.Connection.TRANSACTION_REPEATABLE_READ; else
+ if (w.getMessage().indexOf("SERIALIZABLE") != -1) return java.sql.Connection.TRANSACTION_SERIALIZABLE;
+ }
+ return java.sql.Connection.TRANSACTION_READ_COMMITTED;
+ }
+
+ /**
+ * The first warning reported by calls on this Connection is
+ * returned.
+ *
+ * Note: Sebsequent warnings will be changed to this
+ * SQLWarning
+ *
+ * @return the first SQLWarning or null
+ * @exception SQLException if a database access error occurs
+ */
+ public SQLWarning getWarnings() throws SQLException
+ {
+ return firstWarning;
+ }
+
+ /**
+ * After this call, getWarnings returns null until a new warning
+ * is reported for this connection.
+ *
+ * @exception SQLException if a database access error occurs
+ */
+ public void clearWarnings() throws SQLException
+ {
+ firstWarning = null;
+ }
+
+ /**
+ * This overides the method in org.postgresql.Connection and returns a
+ * ResultSet.
+ */
+ protected java.sql.ResultSet getResultSet(org.postgresql.Connection conn, Field[] fields, Vector tuples, String status, int updateCount) throws SQLException
+ {
+ return new org.postgresql.jdbc2.ResultSet((org.postgresql.jdbc2.Connection)conn,fields,tuples,status,updateCount);
+ }
+
+ // *****************
+ // JDBC 2 extensions
+ // *****************
+
+ public java.sql.Statement createStatement(int resultSetType,int resultSetConcurrency) throws SQLException
+ {
+ // normal create followed by 2 sets?
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public java.sql.PreparedStatement prepareStatement(String sql,int resultSetType,int resultSetConcurrency) throws SQLException
+ {
+ // normal prepare followed by 2 sets?
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public java.sql.CallableStatement prepareCall(String sql,int resultSetType,int resultSetConcurrency) throws SQLException
+ {
+ // normal prepare followed by 2 sets?
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public int getResultSetConcurrency() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public int getResultSetType() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public java.util.Map getTypeMap() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setResultSetConcurrency(int value) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setResultSetType(int type) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setTypeMap(java.util.Map map) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+}
+
+// ***********************************************************************
+
--- /dev/null
+package org.postgresql.jdbc2;
+
+// IMPORTANT NOTE: This file implements the JDBC 2 version of the driver.
+// If you make any modifications to this file, you must make sure that the
+// changes are also made (if relevent) to the related JDBC 1 class in the
+// org.postgresql.jdbc1 package.
+
+import java.sql.*;
+import java.util.*;
+import org.postgresql.Field;
+
+/**
+ * This class provides information about the database as a whole.
+ *
+ *
Many of the methods here return lists of information in ResultSets. You
+ * can use the normal ResultSet methods such as getString and getInt to
+ * retrieve the data from these ResultSets. If a given form of metadata is
+ * not available, these methods should throw a SQLException.
+ *
+ *
Some of these methods take arguments that are String patterns. These
+ * arguments all have names such as fooPattern. Within a pattern String,
+ * "%" means match any substring of 0 or more characters, and "_" means
+ * match any one character. Only metadata entries matching the search
+ * pattern are returned. if a search pattern argument is set to a null
+ * ref, it means that argument's criteria should be dropped from the
+ * search.
+ *
+ *
A SQLException will be throws if a driver does not support a meta
+ * data method. In the case of methods that return a ResultSet, either
+ * a ResultSet (which may be empty) is returned or a SQLException is
+ * thrown.
+ *
+ * @see java.sql.DatabaseMetaData
+ */
+public class DatabaseMetaData implements java.sql.DatabaseMetaData
+{
+ Connection connection; // The connection association
+
+ // These define various OID's. Hopefully they will stay constant.
+ static final int iVarcharOid = 1043; // OID for varchar
+ static final int iBoolOid = 16; // OID for bool
+ static final int iInt2Oid = 21; // OID for int2
+ static final int iInt4Oid = 23; // OID for int4
+ static final int VARHDRSZ = 4; // length for int4
+
+ // This is a default value for remarks
+ private static final byte defaultRemarks[]="no remarks".getBytes();
+
+ public DatabaseMetaData(Connection conn)
+ {
+ this.connection = conn;
+ }
+
+ /**
+ * Can all the procedures returned by getProcedures be called
+ * by the current user?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean allProceduresAreCallable() throws SQLException
+ {
+ return true; // For now...
+ }
+
+ /**
+ * Can all the tables returned by getTable be SELECTed by
+ * the current user?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean allTablesAreSelectable() throws SQLException
+ {
+ return true; // For now...
+ }
+
+ /**
+ * What is the URL for this database?
+ *
+ * @return the url or null if it cannott be generated
+ * @exception SQLException if a database access error occurs
+ */
+ public String getURL() throws SQLException
+ {
+ return connection.getURL();
+ }
+
+ /**
+ * What is our user name as known to the database?
+ *
+ * @return our database user name
+ * @exception SQLException if a database access error occurs
+ */
+ public String getUserName() throws SQLException
+ {
+ return connection.getUserName();
+ }
+
+ /**
+ * Is the database in read-only mode?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isReadOnly() throws SQLException
+ {
+ return connection.isReadOnly();
+ }
+
+ /**
+ * Are NULL values sorted high?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean nullsAreSortedHigh() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Are NULL values sorted low?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean nullsAreSortedLow() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Are NULL values sorted at the start regardless of sort order?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean nullsAreSortedAtStart() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Are NULL values sorted at the end regardless of sort order?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean nullsAreSortedAtEnd() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * What is the name of this database product - we hope that it is
+ * PostgreSQL, so we return that explicitly.
+ *
+ * @return the database product name
+ * @exception SQLException if a database access error occurs
+ */
+ public String getDatabaseProductName() throws SQLException
+ {
+ return new String("PostgreSQL");
+ }
+
+ /**
+ * What is the version of this database product.
+ *
+ *
Note that PostgreSQL 6.3 has a system catalog called pg_version -
+ * however, select * from pg_version on any database retrieves
+ * no rows.
+ *
+ *
For now, we will return the version 6.3 (in the hope that we change
+ * this driver as often as we change the database)
+ *
+ * @return the database version
+ * @exception SQLException if a database access error occurs
+ */
+ public String getDatabaseProductVersion() throws SQLException
+ {
+ return ("6.5.2");
+ }
+
+ /**
+ * What is the name of this JDBC driver? If we don't know this
+ * we are doing something wrong!
+ *
+ * @return the JDBC driver name
+ * @exception SQLException why?
+ */
+ public String getDriverName() throws SQLException
+ {
+ return new String("PostgreSQL Native Driver");
+ }
+
+ /**
+ * What is the version string of this JDBC driver? Again, this is
+ * static.
+ *
+ * @return the JDBC driver name.
+ * @exception SQLException why?
+ */
+ public String getDriverVersion() throws SQLException
+ {
+ return new String(Integer.toString(connection.this_driver.getMajorVersion())+"."+Integer.toString(connection.this_driver.getMinorVersion()));
+ }
+
+ /**
+ * What is this JDBC driver's major version number?
+ *
+ * @return the JDBC driver major version
+ */
+ public int getDriverMajorVersion()
+ {
+ return connection.this_driver.getMajorVersion();
+ }
+
+ /**
+ * What is this JDBC driver's minor version number?
+ *
+ * @return the JDBC driver minor version
+ */
+ public int getDriverMinorVersion()
+ {
+ return connection.this_driver.getMinorVersion();
+ }
+
+ /**
+ * Does the database store tables in a local file? No - it
+ * stores them in a file on the server.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean usesLocalFiles() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Does the database use a file for each table? Well, not really,
+ * since it doesnt use local files.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean usesLocalFilePerTable() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Does the database treat mixed case unquoted SQL identifiers
+ * as case sensitive and as a result store them in mixed case?
+ * A JDBC-Compliant driver will always return false.
+ *
+ *
Predicament - what do they mean by "SQL identifiers" - if it
+ * means the names of the tables and columns, then the answers
+ * given below are correct - otherwise I don't know.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsMixedCaseIdentifiers() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Does the database treat mixed case unquoted SQL identifiers as
+ * case insensitive and store them in upper case?
+ *
+ * @return true if so
+ */
+ public boolean storesUpperCaseIdentifiers() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Does the database treat mixed case unquoted SQL identifiers as
+ * case insensitive and store them in lower case?
+ *
+ * @return true if so
+ */
+ public boolean storesLowerCaseIdentifiers() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Does the database treat mixed case unquoted SQL identifiers as
+ * case insensitive and store them in mixed case?
+ *
+ * @return true if so
+ */
+ public boolean storesMixedCaseIdentifiers() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Does the database treat mixed case quoted SQL identifiers as
+ * case sensitive and as a result store them in mixed case? A
+ * JDBC compliant driver will always return true.
+ *
+ *
Predicament - what do they mean by "SQL identifiers" - if it
+ * means the names of the tables and columns, then the answers
+ * given below are correct - otherwise I don't know.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsMixedCaseQuotedIdentifiers() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Does the database treat mixed case quoted SQL identifiers as
+ * case insensitive and store them in upper case?
+ *
+ * @return true if so
+ */
+ public boolean storesUpperCaseQuotedIdentifiers() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Does the database treat mixed case quoted SQL identifiers as case
+ * insensitive and store them in lower case?
+ *
+ * @return true if so
+ */
+ public boolean storesLowerCaseQuotedIdentifiers() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Does the database treat mixed case quoted SQL identifiers as case
+ * insensitive and store them in mixed case?
+ *
+ * @return true if so
+ */
+ public boolean storesMixedCaseQuotedIdentifiers() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * What is the string used to quote SQL identifiers? This returns
+ * a space if identifier quoting isn't supported. A JDBC Compliant
+ * driver will always use a double quote character.
+ *
+ *
If an SQL identifier is a table name, column name, etc. then
+ * we do not support it.
+ *
+ * @return the quoting string
+ * @exception SQLException if a database access error occurs
+ */
+ public String getIdentifierQuoteString() throws SQLException
+ {
+ return null;
+ }
+
+ /**
+ * Get a comma separated list of all a database's SQL keywords that
+ * are NOT also SQL92 keywords.
+ *
+ *
Within PostgreSQL, the keywords are found in
+ * src/backend/parser/keywords.c
+ *
+ *
For SQL Keywords, I took the list provided at
+ * http://web.dementia.org/~shadow/sql/sql3bnf.sep93.txt
+ * which is for SQL3, not SQL-92, but it is close enough for
+ * this purpose.
+ *
+ * @return a comma separated list of keywords we use
+ * @exception SQLException if a database access error occurs
+ */
+ public String getSQLKeywords() throws SQLException
+ {
+ return new String("abort,acl,add,aggregate,append,archive,arch_store,backward,binary,change,cluster,copy,database,delimiters,do,extend,explain,forward,heavy,index,inherits,isnull,light,listen,load,merge,nothing,notify,notnull,oids,purge,rename,replace,retrieve,returns,rule,recipe,setof,stdin,stdout,store,vacuum,verbose,version");
+ }
+
+ public String getNumericFunctions() throws SQLException
+ {
+ // XXX-Not Implemented
+ return "";
+ }
+
+ public String getStringFunctions() throws SQLException
+ {
+ // XXX-Not Implemented
+ return "";
+ }
+
+ public String getSystemFunctions() throws SQLException
+ {
+ // XXX-Not Implemented
+ return "";
+ }
+
+ public String getTimeDateFunctions() throws SQLException
+ {
+ // XXX-Not Implemented
+ return "";
+ }
+
+ /**
+ * This is the string that can be used to escape '_' and '%' in
+ * a search string pattern style catalog search parameters
+ *
+ * @return the string used to escape wildcard characters
+ * @exception SQLException if a database access error occurs
+ */
+ public String getSearchStringEscape() throws SQLException
+ {
+ return new String("\\");
+ }
+
+ /**
+ * Get all the "extra" characters that can bew used in unquoted
+ * identifier names (those beyond a-zA-Z0-9 and _)
+ *
+ *
From the file src/backend/parser/scan.l, an identifier is
+ * {letter}{letter_or_digit} which makes it just those listed
+ * above.
+ *
+ * @return a string containing the extra characters
+ * @exception SQLException if a database access error occurs
+ */
+ public String getExtraNameCharacters() throws SQLException
+ {
+ return new String("");
+ }
+
+ /**
+ * Is "ALTER TABLE" with an add column supported?
+ * Yes for PostgreSQL 6.1
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsAlterTableWithAddColumn() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Is "ALTER TABLE" with a drop column supported?
+ * Yes for PostgreSQL 6.1
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsAlterTableWithDropColumn() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Is column aliasing supported?
+ *
+ *
If so, the SQL AS clause can be used to provide names for
+ * computed columns or to provide alias names for columns as
+ * required. A JDBC Compliant driver always returns true.
+ *
+ *
+ * select count(C) as C_COUNT from T group by C;
+ *
+ *
+ * should return a column named as C_COUNT instead of count(C)
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsColumnAliasing() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Are concatenations between NULL and non-NULL values NULL? A
+ * JDBC Compliant driver always returns true
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean nullPlusNonNullIsNull() throws SQLException
+ {
+ return true;
+ }
+
+ public boolean supportsConvert() throws SQLException
+ {
+ // XXX-Not Implemented
+ return false;
+ }
+
+ public boolean supportsConvert(int fromType, int toType) throws SQLException
+ {
+ // XXX-Not Implemented
+ return false;
+ }
+
+ public boolean supportsTableCorrelationNames() throws SQLException
+ {
+ // XXX-Not Implemented
+ return false;
+ }
+
+ public boolean supportsDifferentTableCorrelationNames() throws SQLException
+ {
+ // XXX-Not Implemented
+ return false;
+ }
+
+ /**
+ * Are expressions in "ORCER BY" lists supported?
+ *
+ *
e.g. select * from t order by a + b;
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsExpressionsInOrderBy() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Can an "ORDER BY" clause use columns not in the SELECT?
+ * I checked it, and you can't.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsOrderByUnrelated() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Is some form of "GROUP BY" clause supported?
+ * I checked it, and yes it is.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsGroupBy() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Can a "GROUP BY" clause use columns not in the SELECT?
+ * I checked it - it seems to allow it
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsGroupByUnrelated() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Can a "GROUP BY" clause add columns not in the SELECT provided
+ * it specifies all the columns in the SELECT? Does anyone actually
+ * understand what they mean here?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsGroupByBeyondSelect() throws SQLException
+ {
+ return true; // For now...
+ }
+
+ /**
+ * Is the escape character in "LIKE" clauses supported? A
+ * JDBC compliant driver always returns true.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsLikeEscapeClause() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Are multiple ResultSets from a single execute supported?
+ * Well, I implemented it, but I dont think this is possible from
+ * the back ends point of view.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsMultipleResultSets() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Can we have multiple transactions open at once (on different
+ * connections?)
+ * I guess we can have, since Im relying on it.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsMultipleTransactions() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Can columns be defined as non-nullable. A JDBC Compliant driver
+ * always returns true.
+ *
+ *
This changed from false to true in v6.2 of the driver, as this
+ * support was added to the backend.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsNonNullableColumns() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Does this driver support the minimum ODBC SQL grammar. This
+ * grammar is defined at:
+ *
+ *
http://www.microsoft.com/msdn/sdk/platforms/doc/odbc/src/intropr.htm
+ *
+ *
In Appendix C. From this description, we seem to support the
+ * ODBC minimal (Level 0) grammar.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsMinimumSQLGrammar() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Does this driver support the Core ODBC SQL grammar. We need
+ * SQL-92 conformance for this.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsCoreSQLGrammar() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Does this driver support the Extended (Level 2) ODBC SQL
+ * grammar. We don't conform to the Core (Level 1), so we can't
+ * conform to the Extended SQL Grammar.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsExtendedSQLGrammar() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Does this driver support the ANSI-92 entry level SQL grammar?
+ * All JDBC Compliant drivers must return true. I think we have
+ * to support outer joins for this to be true.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsANSI92EntryLevelSQL() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Does this driver support the ANSI-92 intermediate level SQL
+ * grammar? Anyone who does not support Entry level cannot support
+ * Intermediate level.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsANSI92IntermediateSQL() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Does this driver support the ANSI-92 full SQL grammar?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsANSI92FullSQL() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Is the SQL Integrity Enhancement Facility supported?
+ * I haven't seen this mentioned anywhere, so I guess not
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsIntegrityEnhancementFacility() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Is some form of outer join supported? From my knowledge, nope.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsOuterJoins() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Are full nexted outer joins supported? Well, we dont support any
+ * form of outer join, so this is no as well
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsFullOuterJoins() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Is there limited support for outer joins? (This will be true if
+ * supportFullOuterJoins is true)
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsLimitedOuterJoins() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * What is the database vendor's preferred term for "schema" - well,
+ * we do not provide support for schemas, so lets just use that
+ * term.
+ *
+ * @return the vendor term
+ * @exception SQLException if a database access error occurs
+ */
+ public String getSchemaTerm() throws SQLException
+ {
+ return new String("Schema");
+ }
+
+ /**
+ * What is the database vendor's preferred term for "procedure" -
+ * I kind of like "Procedure" myself.
+ *
+ * @return the vendor term
+ * @exception SQLException if a database access error occurs
+ */
+ public String getProcedureTerm() throws SQLException
+ {
+ return new String("Procedure");
+ }
+
+ /**
+ * What is the database vendor's preferred term for "catalog"? -
+ * we dont have a preferred term, so just use Catalog
+ *
+ * @return the vendor term
+ * @exception SQLException if a database access error occurs
+ */
+ public String getCatalogTerm() throws SQLException
+ {
+ return new String("Catalog");
+ }
+
+ /**
+ * Does a catalog appear at the start of a qualified table name?
+ * (Otherwise it appears at the end).
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isCatalogAtStart() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * What is the Catalog separator. Hmmm....well, I kind of like
+ * a period (so we get catalog.table definitions). - I don't think
+ * PostgreSQL supports catalogs anyhow, so it makes no difference.
+ *
+ * @return the catalog separator string
+ * @exception SQLException if a database access error occurs
+ */
+ public String getCatalogSeparator() throws SQLException
+ {
+ // PM Sep 29 97 - changed from "." as we don't support catalogs.
+ return new String("");
+ }
+
+ /**
+ * Can a schema name be used in a data manipulation statement? Nope.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsSchemasInDataManipulation() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Can a schema name be used in a procedure call statement? Nope.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsSchemasInProcedureCalls() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Can a schema be used in a table definition statement? Nope.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsSchemasInTableDefinitions() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Can a schema name be used in an index definition statement?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsSchemasInIndexDefinitions() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Can a schema name be used in a privilege definition statement?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsSchemasInPrivilegeDefinitions() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Can a catalog name be used in a data manipulation statement?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsCatalogsInDataManipulation() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Can a catalog name be used in a procedure call statement?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsCatalogsInProcedureCalls() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Can a catalog name be used in a table definition statement?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsCatalogsInTableDefinitions() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Can a catalog name be used in an index definition?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsCatalogsInIndexDefinitions() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Can a catalog name be used in a privilege definition statement?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsCatalogsInPrivilegeDefinitions() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * We support cursors for gets only it seems. I dont see a method
+ * to get a positioned delete.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsPositionedDelete() throws SQLException
+ {
+ return false; // For now...
+ }
+
+ /**
+ * Is positioned UPDATE supported?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsPositionedUpdate() throws SQLException
+ {
+ return false; // For now...
+ }
+
+ public boolean supportsSelectForUpdate() throws SQLException
+ {
+ // XXX-Not Implemented
+ return false;
+ }
+
+ public boolean supportsStoredProcedures() throws SQLException
+ {
+ // XXX-Not Implemented
+ return false;
+ }
+
+ public boolean supportsSubqueriesInComparisons() throws SQLException
+ {
+ // XXX-Not Implemented
+ return false;
+ }
+
+ public boolean supportsSubqueriesInExists() throws SQLException
+ {
+ // XXX-Not Implemented
+ return false;
+ }
+
+ public boolean supportsSubqueriesInIns() throws SQLException
+ {
+ // XXX-Not Implemented
+ return false;
+ }
+
+ public boolean supportsSubqueriesInQuantifieds() throws SQLException
+ {
+ // XXX-Not Implemented
+ return false;
+ }
+
+ public boolean supportsCorrelatedSubqueries() throws SQLException
+ {
+ // XXX-Not Implemented
+ return false;
+ }
+
+ /**
+ * Is SQL UNION supported? Nope.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsUnion() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Is SQL UNION ALL supported? Nope.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsUnionAll() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * In PostgreSQL, Cursors are only open within transactions.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsOpenCursorsAcrossCommit() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Do we support open cursors across multiple transactions?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsOpenCursorsAcrossRollback() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Can statements remain open across commits? They may, but
+ * this driver cannot guarentee that. In further reflection.
+ * we are talking a Statement object jere, so the answer is
+ * yes, since the Statement is only a vehicle to ExecSQL()
+ *
+ * @return true if they always remain open; false otherwise
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsOpenStatementsAcrossCommit() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Can statements remain open across rollbacks? They may, but
+ * this driver cannot guarentee that. In further contemplation,
+ * we are talking a Statement object here, so the answer is yes,
+ * since the Statement is only a vehicle to ExecSQL() in Connection
+ *
+ * @return true if they always remain open; false otherwise
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsOpenStatementsAcrossRollback() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * How many hex characters can you have in an inline binary literal
+ *
+ * @return the max literal length
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxBinaryLiteralLength() throws SQLException
+ {
+ return 0; // For now...
+ }
+
+ /**
+ * What is the maximum length for a character literal
+ * I suppose it is 8190 (8192 - 2 for the quotes)
+ *
+ * @return the max literal length
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxCharLiteralLength() throws SQLException
+ {
+ return 8190;
+ }
+
+ /**
+ * Whats the limit on column name length. The description of
+ * pg_class would say '32' (length of pg_class.relname) - we
+ * should probably do a query for this....but....
+ *
+ * @return the maximum column name length
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxColumnNameLength() throws SQLException
+ {
+ return 32;
+ }
+
+ /**
+ * What is the maximum number of columns in a "GROUP BY" clause?
+ *
+ * @return the max number of columns
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxColumnsInGroupBy() throws SQLException
+ {
+ return getMaxColumnsInTable();
+ }
+
+ /**
+ * What's the maximum number of columns allowed in an index?
+ * 6.0 only allowed one column, but 6.1 introduced multi-column
+ * indices, so, theoretically, its all of them.
+ *
+ * @return max number of columns
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxColumnsInIndex() throws SQLException
+ {
+ return getMaxColumnsInTable();
+ }
+
+ /**
+ * What's the maximum number of columns in an "ORDER BY clause?
+ * Theoretically, all of them!
+ *
+ * @return the max columns
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxColumnsInOrderBy() throws SQLException
+ {
+ return getMaxColumnsInTable();
+ }
+
+ /**
+ * What is the maximum number of columns in a "SELECT" list?
+ * Theoretically, all of them!
+ *
+ * @return the max columns
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxColumnsInSelect() throws SQLException
+ {
+ return getMaxColumnsInTable();
+ }
+
+ /**
+ * What is the maximum number of columns in a table? From the
+ * create_table(l) manual page...
+ *
+ *
"The new class is created as a heap with no initial data. A
+ * class can have no more than 1600 attributes (realistically,
+ * this is limited by the fact that tuple sizes must be less than
+ * 8192 bytes)..."
+ *
+ * @return the max columns
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxColumnsInTable() throws SQLException
+ {
+ return 1600;
+ }
+
+ /**
+ * How many active connection can we have at a time to this
+ * database? Well, since it depends on postmaster, which just
+ * does a listen() followed by an accept() and fork(), its
+ * basically very high. Unless the system runs out of processes,
+ * it can be 65535 (the number of aux. ports on a TCP/IP system).
+ * I will return 8192 since that is what even the largest system
+ * can realistically handle,
+ *
+ * @return the maximum number of connections
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxConnections() throws SQLException
+ {
+ return 8192;
+ }
+
+ /**
+ * What is the maximum cursor name length (the same as all
+ * the other F***** identifiers!)
+ *
+ * @return max cursor name length in bytes
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxCursorNameLength() throws SQLException
+ {
+ return 32;
+ }
+
+ /**
+ * What is the maximum length of an index (in bytes)? Now, does
+ * the spec. mean name of an index (in which case its 32, the
+ * same as a table) or does it mean length of an index element
+ * (in which case its 8192, the size of a row) or does it mean
+ * the number of rows it can access (in which case it 2^32 -
+ * a 4 byte OID number)? I think its the length of an index
+ * element, personally, so Im setting it to 8192.
+ *
+ * @return max index length in bytes
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxIndexLength() throws SQLException
+ {
+ return 8192;
+ }
+
+ public int getMaxSchemaNameLength() throws SQLException
+ {
+ // XXX-Not Implemented
+ return 0;
+ }
+
+ /**
+ * What is the maximum length of a procedure name?
+ * (length of pg_proc.proname used) - again, I really
+ * should do a query here to get it.
+ *
+ * @return the max name length in bytes
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxProcedureNameLength() throws SQLException
+ {
+ return 32;
+ }
+
+ public int getMaxCatalogNameLength() throws SQLException
+ {
+ // XXX-Not Implemented
+ return 0;
+ }
+
+ /**
+ * What is the maximum length of a single row? (not including
+ * blobs). 8192 is defined in PostgreSQL.
+ *
+ * @return max row size in bytes
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxRowSize() throws SQLException
+ {
+ return 8192;
+ }
+
+ /**
+ * Did getMaxRowSize() include LONGVARCHAR and LONGVARBINARY
+ * blobs? We don't handle blobs yet
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean doesMaxRowSizeIncludeBlobs() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * What is the maximum length of a SQL statement?
+ *
+ * @return max length in bytes
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxStatementLength() throws SQLException
+ {
+ return 8192;
+ }
+
+ /**
+ * How many active statements can we have open at one time to
+ * this database? Basically, since each Statement downloads
+ * the results as the query is executed, we can have many. However,
+ * we can only really have one statement per connection going
+ * at once (since they are executed serially) - so we return
+ * one.
+ *
+ * @return the maximum
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxStatements() throws SQLException
+ {
+ return 1;
+ }
+
+ /**
+ * What is the maximum length of a table name? This was found
+ * from pg_class.relname length
+ *
+ * @return max name length in bytes
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxTableNameLength() throws SQLException
+ {
+ return 32;
+ }
+
+ /**
+ * What is the maximum number of tables that can be specified
+ * in a SELECT? Theoretically, this is the same number as the
+ * number of tables allowable. In practice tho, it is much smaller
+ * since the number of tables is limited by the statement, we
+ * return 1024 here - this is just a number I came up with (being
+ * the number of tables roughly of three characters each that you
+ * can fit inside a 8192 character buffer with comma separators).
+ *
+ * @return the maximum
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxTablesInSelect() throws SQLException
+ {
+ return 1024;
+ }
+
+ /**
+ * What is the maximum length of a user name? Well, we generally
+ * use UNIX like user names in PostgreSQL, so I think this would
+ * be 8. However, showing the schema for pg_user shows a length
+ * for username of 32.
+ *
+ * @return the max name length in bytes
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxUserNameLength() throws SQLException
+ {
+ return 32;
+ }
+
+
+ /**
+ * What is the database's default transaction isolation level? We
+ * do not support this, so all transactions are SERIALIZABLE.
+ *
+ * @return the default isolation level
+ * @exception SQLException if a database access error occurs
+ * @see Connection
+ */
+ public int getDefaultTransactionIsolation() throws SQLException
+ {
+ return Connection.TRANSACTION_READ_COMMITTED;
+ }
+
+ /**
+ * Are transactions supported? If not, commit and rollback are noops
+ * and the isolation level is TRANSACTION_NONE. We do support
+ * transactions.
+ *
+ * @return true if transactions are supported
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsTransactions() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Does the database support the given transaction isolation level?
+ * We only support TRANSACTION_SERIALIZABLE and TRANSACTION_READ_COMMITTED
+ *
+ * @param level the values are defined in java.sql.Connection
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ * @see Connection
+ */
+ public boolean supportsTransactionIsolationLevel(int level) throws SQLException
+ {
+ if (level == Connection.TRANSACTION_SERIALIZABLE ||
+ level == Connection.TRANSACTION_READ_COMMITTED)
+ return true;
+ else
+ return false;
+ }
+
+ /**
+ * Are both data definition and data manipulation transactions
+ * supported? I checked it, and could not do a CREATE TABLE
+ * within a transaction, so I am assuming that we don't
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Are only data manipulation statements withing a transaction
+ * supported?
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean supportsDataManipulationTransactionsOnly() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Does a data definition statement within a transaction force
+ * the transaction to commit? I think this means something like:
+ *
+ * CREATE TABLE T (A INT);
+ * INSERT INTO T (A) VALUES (2);
+ * BEGIN;
+ * UPDATE T SET A = A + 1;
+ * CREATE TABLE X (A INT);
+ * SELECT A FROM T INTO X;
+ * COMMIT;
+ *
+ * does the CREATE TABLE call cause a commit? The answer is no.
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean dataDefinitionCausesTransactionCommit() throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Is a data definition statement within a transaction ignored?
+ * It seems to be (from experiment in previous method)
+ *
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean dataDefinitionIgnoredInTransactions() throws SQLException
+ {
+ return true;
+ }
+
+ /**
+ * Get a description of stored procedures available in a catalog
+ *
+ *
Only procedure descriptions matching the schema and procedure
+ * name criteria are returned. They are ordered by PROCEDURE_SCHEM
+ * and PROCEDURE_NAME
+ *
+ *
Each procedure description has the following columns:
+ *
PROCEDURE_CAT String => procedure catalog (may be null)
+ *
PROCEDURE_SCHEM String => procedure schema (may be null)
+ *
PROCEDURE_NAME String => procedure name
+ *
Field 4 reserved (make it null)
+ *
Field 5 reserved (make it null)
+ *
Field 6 reserved (make it null)
+ *
REMARKS String => explanatory comment on the procedure
+ *
PROCEDURE_TYPE short => kind of procedure
+ *
procedureResultUnknown - May return a result
+ *
procedureNoResult - Does not return a result
+ *
procedureReturnsResult - Returns a result
+ *
+ *
+ *
+ * @param catalog - a catalog name; "" retrieves those without a
+ * catalog; null means drop catalog name from criteria
+ * @param schemaParrern - a schema name pattern; "" retrieves those
+ * without a schema - we ignore this parameter
+ * @param procedureNamePattern - a procedure name pattern
+ * @return ResultSet - each row is a procedure description
+ * @exception SQLException if a database access error occurs
+ */
+ public java.sql.ResultSet getProcedures(String catalog, String schemaPattern, String procedureNamePattern) throws SQLException
+ {
+ // the field descriptors for the new ResultSet
+ Field f[] = new Field[8];
+ java.sql.ResultSet r; // ResultSet for the SQL query that we need to do
+ Vector v = new Vector(); // The new ResultSet tuple stuff
+
+ byte remarks[] = defaultRemarks;
+
+ f[0] = new Field(connection, "PROCEDURE_CAT", iVarcharOid, 32);
+ f[1] = new Field(connection, "PROCEDURE_SCHEM", iVarcharOid, 32);
+ f[2] = new Field(connection, "PROCEDURE_NAME", iVarcharOid, 32);
+ f[3] = f[4] = f[5] = null; // reserved, must be null for now
+ f[6] = new Field(connection, "REMARKS", iVarcharOid, 8192);
+ f[7] = new Field(connection, "PROCEDURE_TYPE", iInt2Oid, 2);
+
+ // If the pattern is null, then set it to the default
+ if(procedureNamePattern==null)
+ procedureNamePattern="%";
+
+ r = connection.ExecSQL("select proname, proretset from pg_proc where proname like '"+procedureNamePattern.toLowerCase()+"' order by proname");
+
+ while (r.next())
+ {
+ byte[][] tuple = new byte[8][0];
+
+ tuple[0] = null; // Catalog name
+ tuple[1] = null; // Schema name
+ tuple[2] = r.getBytes(1); // Procedure name
+ tuple[3] = tuple[4] = tuple[5] = null; // Reserved
+ tuple[6] = remarks; // Remarks
+
+ if (r.getBoolean(2))
+ tuple[7] = Integer.toString(java.sql.DatabaseMetaData.procedureReturnsResult).getBytes();
+ else
+ tuple[7] = Integer.toString(java.sql.DatabaseMetaData.procedureNoResult).getBytes();
+
+ v.addElement(tuple);
+ }
+ return new ResultSet(connection, f, v, "OK", 1);
+ }
+
+ /**
+ * Get a description of a catalog's stored procedure parameters
+ * and result columns.
+ *
+ *
Only descriptions matching the schema, procedure and parameter
+ * name criteria are returned. They are ordered by PROCEDURE_SCHEM
+ * and PROCEDURE_NAME. Within this, the return value, if any, is
+ * first. Next are the parameter descriptions in call order. The
+ * column descriptions follow in column number order.
+ *
+ *
Each row in the ResultSet is a parameter description or column
+ * description with the following fields:
+ *
PROCEDURE_CAT String => procedure catalog (may be null)
+ *
PROCEDURE_SCHEM String => procedure schema (may be null)
+ *
PROCEDURE_NAME String => procedure name
+ *
COLUMN_NAME String => column/parameter name
+ *
COLUMN_TYPE Short => kind of column/parameter:
+ *
- procedureColumnUnknown - nobody knows
+ *
procedureColumnIn - IN parameter
+ *
procedureColumnInOut - INOUT parameter
+ *
procedureColumnOut - OUT parameter
+ *
procedureColumnReturn - procedure return value
+ *
procedureColumnResult - result column in ResultSet
+ *
+ *
DATA_TYPE short => SQL type from java.sql.Types
+ *
TYPE_NAME String => SQL type name
+ *
PRECISION int => precision
+ *
LENGTH int => length in bytes of data
+ *
SCALE short => scale
+ *
RADIX short => radix
+ *
NULLABLE short => can it contain NULL?
+ *
- procedureNoNulls - does not allow NULL values
+ *
procedureNullable - allows NULL values
+ *
procedureNullableUnknown - nullability unknown
+ *
REMARKS String => comment describing parameter/column
+ *
+ * @param catalog This is ignored in org.postgresql, advise this is set to null
+ * @param schemaPattern This is ignored in org.postgresql, advise this is set to null
+ * @param procedureNamePattern a procedure name pattern
+ * @param columnNamePattern a column name pattern
+ * @return each row is a stored procedure parameter or column description
+ * @exception SQLException if a database-access error occurs
+ * @see #getSearchStringEscape
+ */
+ // Implementation note: This is required for Borland's JBuilder to work
+ public java.sql.ResultSet getProcedureColumns(String catalog, String schemaPattern, String procedureNamePattern, String columnNamePattern) throws SQLException
+ {
+ if(procedureNamePattern==null)
+ procedureNamePattern="%";
+
+ if(columnNamePattern==null)
+ columnNamePattern="%";
+
+ // for now, this returns an empty result set.
+ Field f[] = new Field[13];
+ ResultSet r; // ResultSet for the SQL query that we need to do
+ Vector v = new Vector(); // The new ResultSet tuple stuff
+
+ f[0] = new Field(connection, new String("PROCEDURE_CAT"), iVarcharOid, 32);
+ f[1] = new Field(connection, new String("PROCEDURE_SCHEM"), iVarcharOid, 32);
+ f[2] = new Field(connection, new String("PROCEDURE_NAME"), iVarcharOid, 32);
+ f[3] = new Field(connection, new String("COLUMN_NAME"), iVarcharOid, 32);
+ f[4] = new Field(connection, new String("COLUMN_TYPE"), iInt2Oid, 2);
+ f[5] = new Field(connection, new String("DATA_TYPE"), iInt2Oid, 2);
+ f[6] = new Field(connection, new String("TYPE_NAME"), iVarcharOid, 32);
+ f[7] = new Field(connection, new String("PRECISION"), iInt4Oid, 4);
+ f[8] = new Field(connection, new String("LENGTH"), iInt4Oid, 4);
+ f[9] = new Field(connection, new String("SCALE"), iInt2Oid, 2);
+ f[10] = new Field(connection, new String("RADIX"), iInt2Oid, 2);
+ f[11] = new Field(connection, new String("NULLABLE"), iInt2Oid, 2);
+ f[12] = new Field(connection, new String("REMARKS"), iVarcharOid, 32);
+
+ // add query loop here
+
+ return new ResultSet(connection, f, v, "OK", 1);
+ }
+
+ /**
+ * Get a description of tables available in a catalog.
+ *
+ *
Only table descriptions matching the catalog, schema, table
+ * name and type criteria are returned. They are ordered by
+ * TABLE_TYPE, TABLE_SCHEM and TABLE_NAME.
+ *
+ *
Each table description has the following columns:
+ *
+ *
TABLE_CAT String => table catalog (may be null)
+ *
TABLE_SCHEM String => table schema (may be null)
+ *
TABLE_NAME String => table name
+ *
TABLE_TYPE String => table type. Typical types are "TABLE",
+ * "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY", "LOCAL
+ * TEMPORARY", "ALIAS", "SYNONYM".
+ *
REMARKS String => explanatory comment on the table
+ *
+ *
+ *
The valid values for the types parameter are:
+ * "TABLE", "INDEX", "LARGE OBJECT", "SEQUENCE", "SYSTEM TABLE" and
+ * "SYSTEM INDEX"
+ *
+ * @param catalog a catalog name; For org.postgresql, this is ignored, and
+ * should be set to null
+ * @param schemaPattern a schema name pattern; For org.postgresql, this is ignored, and
+ * should be set to null
+ * @param tableNamePattern a table name pattern. For all tables this should be "%"
+ * @param types a list of table types to include; null returns
+ * all types
+ * @return each row is a table description
+ * @exception SQLException if a database-access error occurs.
+ */
+ public java.sql.ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String types[]) throws SQLException
+ {
+ // Handle default value for types
+ if(types==null)
+ types = defaultTableTypes;
+
+ if(tableNamePattern==null)
+ tableNamePattern="%";
+
+ // the field descriptors for the new ResultSet
+ Field f[] = new Field[5];
+ java.sql.ResultSet r; // ResultSet for the SQL query that we need to do
+ Vector v = new Vector(); // The new ResultSet tuple stuff
+
+ f[0] = new Field(connection, new String("TABLE_CAT"), iVarcharOid, 32);
+ f[1] = new Field(connection, new String("TABLE_SCHEM"), iVarcharOid, 32);
+ f[2] = new Field(connection, new String("TABLE_NAME"), iVarcharOid, 32);
+ f[3] = new Field(connection, new String("TABLE_TYPE"), iVarcharOid, 32);
+ f[4] = new Field(connection, new String("REMARKS"), iVarcharOid, 32);
+
+ // Now form the query
+ StringBuffer sql = new StringBuffer("select relname,oid from pg_class where (");
+ boolean notFirst=false;
+ for(int i=0;i
+ if(notFirst)
+ sql.append(" or ");
+ for(int j=0;j
+ if(getTableTypes[j][0].equals(types[i])) {
+ sql.append(getTableTypes[j][1]);
+ notFirst=true;
+ }
+ }
+
+ // Added by Stefan Andreasen
+ // Now take the pattern into account
+ sql.append(") and relname like '");
+ sql.append(tableNamePattern.toLowerCase());
+ sql.append("'");
+
+ // Now run the query
+ r = connection.ExecSQL(sql.toString());
+
+ byte remarks[];
+
+ while (r.next())
+ {
+ byte[][] tuple = new byte[5][0];
+
+ // Fetch the description for the table (if any)
+ java.sql.ResultSet dr = connection.ExecSQL("select description from pg_description where objoid="+r.getInt(2));
+ if(((org.postgresql.ResultSet)dr).getTupleCount()==1) {
+ dr.next();
+ remarks = dr.getBytes(1);
+ } else
+ remarks = defaultRemarks;
+ dr.close();
+
+ tuple[0] = null; // Catalog name
+ tuple[1] = null; // Schema name
+ tuple[2] = r.getBytes(1); // Table name
+ tuple[3] = null; // Table type
+ tuple[4] = remarks; // Remarks
+ v.addElement(tuple);
+ }
+ r.close();
+ return new ResultSet(connection, f, v, "OK", 1);
+ }
+
+ // This array contains the valid values for the types argument
+ // in getTables().
+ //
+ // Each supported type consists of it's name, and the sql where
+ // clause to retrieve that value.
+ //
+ // IMPORTANT: the query must be enclosed in ( )
+ private static final String getTableTypes[][] = {
+ {"TABLE", "(relkind='r' and relname !~ '^pg_' and relname !~ '^xinv')"},
+ {"INDEX", "(relkind='i' and relname !~ '^pg_' and relname !~ '^xinx')"},
+ {"LARGE OBJECT", "(relkind='r' and relname ~ '^xinv')"},
+ {"SEQUENCE", "(relkind='S' and relname !~ '^pg_')"},
+ {"SYSTEM TABLE", "(relkind='r' and relname ~ '^pg_')"},
+ {"SYSTEM INDEX", "(relkind='i' and relname ~ '^pg_')"}
+ };
+
+ // These are the default tables, used when NULL is passed to getTables
+ // The choice of these provide the same behaviour as psql's \d
+ private static final String defaultTableTypes[] = {
+ "TABLE","INDEX","SEQUENCE"
+ };
+
+ /**
+ * Get the schema names available in this database. The results
+ * are ordered by schema name.
+ *
+ *
The schema column is:
+ *
TABLE_SCHEM String => schema name
+ *
+ *
+ * @return ResultSet each row has a single String column that is a
+ * schema name
+ */
+ public java.sql.ResultSet getSchemas() throws SQLException
+ {
+ // We don't use schemas, so we simply return a single schema name "".
+ //
+ Field f[] = new Field[1];
+ Vector v = new Vector();
+ byte[][] tuple = new byte[1][0];
+ f[0] = new Field(connection,new String("TABLE_SCHEM"),iVarcharOid,32);
+ tuple[0] = "".getBytes();
+ v.addElement(tuple);
+ return new ResultSet(connection,f,v,"OK",1);
+ }
+
+ /**
+ * Get the catalog names available in this database. The results
+ * are ordered by catalog name.
+ *
+ *
The catalog column is:
+ *
TABLE_CAT String => catalog name
+ *
+ *
+ * @return ResultSet each row has a single String column that is a
+ * catalog name
+ */
+ public java.sql.ResultSet getCatalogs() throws SQLException
+ {
+ // We don't use catalogs, so we simply return a single catalog name "".
+ Field f[] = new Field[1];
+ Vector v = new Vector();
+ byte[][] tuple = new byte[1][0];
+ f[0] = new Field(connection,new String("TABLE_CAT"),iVarcharOid,32);
+ tuple[0] = "".getBytes();
+ v.addElement(tuple);
+ return new ResultSet(connection,f,v,"OK",1);
+ }
+
+ /**
+ * Get the table types available in this database. The results
+ * are ordered by table type.
+ *
+ *
TABLE_TYPE String => table type. Typical types are "TABLE",
+ * "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY",
+ * "LOCAL TEMPORARY", "ALIAS", "SYNONYM".
+ *
+ *
+ * @return ResultSet each row has a single String column that is a
+ * table type
+ */
+ public java.sql.ResultSet getTableTypes() throws SQLException
+ {
+ Field f[] = new Field[1];
+ Vector v = new Vector();
+ byte[][] tuple = new byte[1][0];
+ f[0] = new Field(connection,new String("TABLE_TYPE"),iVarcharOid,32);
+ for(int i=0;i
+ tuple[0] = getTableTypes[i][0].getBytes();
+ v.addElement(tuple);
+ }
+ return new ResultSet(connection,f,v,"OK",1);
+ }
+
+ /**
+ * Get a description of table columns available in a catalog.
+ *
+ *
Only column descriptions matching the catalog, schema, table
+ * and column name criteria are returned. They are ordered by
+ * TABLE_SCHEM, TABLE_NAME and ORDINAL_POSITION.
+ *
+ *
Each column description has the following columns:
+ *
TABLE_CAT String => table catalog (may be null)
+ *
TABLE_SCHEM String => table schema (may be null)
+ *
TABLE_NAME String => table name
+ *
COLUMN_NAME String => column name
+ *
DATA_TYPE short => SQL type from java.sql.Types
+ *
TYPE_NAME String => Data source dependent type name
+ *
COLUMN_SIZE int => column size. For char or date
+ * types this is the maximum number of characters, for numeric or
+ * decimal types this is precision.
+ *
BUFFER_LENGTH is not used.
+ *
DECIMAL_DIGITS int => the number of fractional digits
+ *
NUM_PREC_RADIX int => Radix (typically either 10 or 2)
+ *
NULLABLE int => is NULL allowed?
+ *
columnNoNulls - might not allow NULL values
+ *
columnNullable - definitely allows NULL values
+ *
columnNullableUnknown - nullability unknown
+ *
+ *
REMARKS String => comment describing column (may be null)
+ *
COLUMN_DEF String => default value (may be null)
+ *
SQL_DATA_TYPE int => unused
+ *
SQL_DATETIME_SUB int => unused
+ *
CHAR_OCTET_LENGTH int => for char types the
+ * maximum number of bytes in the column
+ *
ORDINAL_POSITION int => index of column in table
+ * (starting at 1)
+ *
IS_NULLABLE String => "NO" means column definitely
+ * does not allow NULL values; "YES" means the column might
+ * allow NULL values. An empty string means nobody knows.
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schemaPattern a schema name pattern; "" retrieves those
+ * without a schema
+ * @param tableNamePattern a table name pattern
+ * @param columnNamePattern a column name pattern
+ * @return ResultSet each row is a column description
+ * @see #getSearchStringEscape
+ */
+ public java.sql.ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException
+ {
+ // the field descriptors for the new ResultSet
+ Field f[] = new Field[18];
+ java.sql.ResultSet r; // ResultSet for the SQL query that we need to do
+ Vector v = new Vector(); // The new ResultSet tuple stuff
+
+ f[0] = new Field(connection, new String("TABLE_CAT"), iVarcharOid, 32);
+ f[1] = new Field(connection, new String("TABLE_SCHEM"), iVarcharOid, 32);
+ f[2] = new Field(connection, new String("TABLE_NAME"), iVarcharOid, 32);
+ f[3] = new Field(connection, new String("COLUMN_NAME"), iVarcharOid, 32);
+ f[4] = new Field(connection, new String("DATA_TYPE"), iInt2Oid, 2);
+ f[5] = new Field(connection, new String("TYPE_NAME"), iVarcharOid, 32);
+ f[6] = new Field(connection, new String("COLUMN_SIZE"), iInt4Oid, 4);
+ f[7] = new Field(connection, new String("BUFFER_LENGTH"), iVarcharOid, 32);
+ f[8] = new Field(connection, new String("DECIMAL_DIGITS"), iInt4Oid, 4);
+ f[9] = new Field(connection, new String("NUM_PREC_RADIX"), iInt4Oid, 4);
+ f[10] = new Field(connection, new String("NULLABLE"), iInt4Oid, 4);
+ f[11] = new Field(connection, new String("REMARKS"), iVarcharOid, 32);
+ f[12] = new Field(connection, new String("COLUMN_DEF"), iVarcharOid, 32);
+ f[13] = new Field(connection, new String("SQL_DATA_TYPE"), iInt4Oid, 4);
+ f[14] = new Field(connection, new String("SQL_DATETIME_SUB"), iInt4Oid, 4);
+ f[15] = new Field(connection, new String("CHAR_OCTET_LENGTH"), iVarcharOid, 32);
+ f[16] = new Field(connection, new String("ORDINAL_POSITION"), iInt4Oid,4);
+ f[17] = new Field(connection, new String("IS_NULLABLE"), iVarcharOid, 32);
+
+ // Added by Stefan Andreasen
+ // If the pattern are null then set them to %
+ if (tableNamePattern == null) tableNamePattern="%";
+ if (columnNamePattern == null) columnNamePattern="%";
+
+ // Now form the query
+ // Modified by Stefan Andreasen
+ r = connection.ExecSQL("select a.oid,c.relname,a.attname,a.atttypid,a.attnum,a.attnotnull,a.attlen,a.atttypmod from pg_class c, pg_attribute a where a.attrelid=c.oid and c.relname like '"+tableNamePattern.toLowerCase()+"' and a.attname like '"+columnNamePattern.toLowerCase()+"' and a.attnum>0 order by c.relname,a.attnum");
+
+ byte remarks[];
+
+ while(r.next()) {
+ byte[][] tuple = new byte[18][0];
+
+ // Fetch the description for the table (if any)
+ java.sql.ResultSet dr = connection.ExecSQL("select description from pg_description where objoid="+r.getInt(1));
+ if(((org.postgresql.ResultSet)dr).getTupleCount()==1) {
+ dr.next();
+ tuple[11] = dr.getBytes(1);
+ } else
+ tuple[11] = defaultRemarks;
+
+ dr.close();
+
+ tuple[0] = "".getBytes(); // Catalog name
+ tuple[1] = "".getBytes(); // Schema name
+ tuple[2] = r.getBytes(2); // Table name
+ tuple[3] = r.getBytes(3); // Column name
+
+ dr = connection.ExecSQL("select typname from pg_type where oid = "+r.getString(4));
+ dr.next();
+ String typname=dr.getString(1);
+ dr.close();
+ tuple[4] = Integer.toString(Field.getSQLType(typname)).getBytes(); // Data type
+ tuple[5] = typname.getBytes(); // Type name
+
+ // Column size
+ // Looking at the psql source,
+ // I think the length of a varchar as specified when the table was created
+ // should be extracted from atttypmod which contains this length + sizeof(int32)
+ if (typname.equals("bpchar") || typname.equals("varchar")) {
+ int atttypmod = r.getInt(8);
+ tuple[6] = Integer.toString(atttypmod != -1 ? atttypmod - VARHDRSZ : 0).getBytes();
+ } else
+ tuple[6] = r.getBytes(7);
+
+ tuple[7] = null; // Buffer length
+
+ tuple[8] = "0".getBytes(); // Decimal Digits - how to get this?
+ tuple[9] = "10".getBytes(); // Num Prec Radix - assume decimal
+
+ // tuple[10] is below
+ // tuple[11] is above
+
+ tuple[12] = null; // column default
+
+ tuple[13] = null; // sql data type (unused)
+ tuple[14] = null; // sql datetime sub (unused)
+
+ tuple[15] = tuple[6]; // char octet length
+
+ tuple[16] = r.getBytes(5); // ordinal position
+
+ String nullFlag = r.getString(6);
+ tuple[10] = Integer.toString(nullFlag.equals("f")?java.sql.DatabaseMetaData.columnNullable:java.sql.DatabaseMetaData.columnNoNulls).getBytes(); // Nullable
+ tuple[17] = (nullFlag.equals("f")?"YES":"NO").getBytes(); // is nullable
+
+ v.addElement(tuple);
+ }
+ r.close();
+ return new ResultSet(connection, f, v, "OK", 1);
+ }
+
+ /**
+ * Get a description of the access rights for a table's columns.
+ *
+ *
Only privileges matching the column name criteria are
+ * returned. They are ordered by COLUMN_NAME and PRIVILEGE.
+ *
+ *
Each privilige description has the following columns:
+ *
TABLE_CAT String => table catalog (may be null)
+ *
TABLE_SCHEM String => table schema (may be null)
+ *
TABLE_NAME String => table name
+ *
COLUMN_NAME String => column name
+ *
GRANTOR => grantor of access (may be null)
+ *
GRANTEE String => grantee of access
+ *
PRIVILEGE String => name of access (SELECT,
+ * INSERT, UPDATE, REFRENCES, ...)
+ *
IS_GRANTABLE String => "YES" if grantee is permitted
+ * to grant to others; "NO" if not; null if unknown
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name; "" retrieves those without a schema
+ * @param table a table name
+ * @param columnNamePattern a column name pattern
+ * @return ResultSet each row is a column privilege description
+ * @see #getSearchStringEscape
+ */
+ public java.sql.ResultSet getColumnPrivileges(String catalog, String schema, String table, String columnNamePattern) throws SQLException
+ {
+ Field f[] = new Field[8];
+ Vector v = new Vector();
+
+ if(table==null)
+ table="%";
+
+ if(columnNamePattern==null)
+ columnNamePattern="%";
+ else
+ columnNamePattern=columnNamePattern.toLowerCase();
+
+ f[0] = new Field(connection,new String("TABLE_CAT"),iVarcharOid,32);
+ f[1] = new Field(connection,new String("TABLE_SCHEM"),iVarcharOid,32);
+ f[2] = new Field(connection,new String("TABLE_NAME"),iVarcharOid,32);
+ f[3] = new Field(connection,new String("COLUMN_NAME"),iVarcharOid,32);
+ f[4] = new Field(connection,new String("GRANTOR"),iVarcharOid,32);
+ f[5] = new Field(connection,new String("GRANTEE"),iVarcharOid,32);
+ f[6] = new Field(connection,new String("PRIVILEGE"),iVarcharOid,32);
+ f[7] = new Field(connection,new String("IS_GRANTABLE"),iVarcharOid,32);
+
+ // This is taken direct from the psql source
+ java.sql.ResultSet r = connection.ExecSQL("SELECT relname, relacl FROM pg_class, pg_user WHERE ( relkind = 'r' OR relkind = 'i') and relname !~ '^pg_' and relname !~ '^xin[vx][0-9]+' and usesysid = relowner and relname like '"+table.toLowerCase()+"' ORDER BY relname");
+ while(r.next()) {
+ byte[][] tuple = new byte[8][0];
+ tuple[0] = tuple[1]= "".getBytes();
+ DriverManager.println("relname=\""+r.getString(1)+"\" relacl=\""+r.getString(2)+"\"");
+
+ // For now, don't add to the result as relacl needs to be processed.
+ //v.addElement(tuple);
+ }
+
+ return new ResultSet(connection,f,v,"OK",1);
+ }
+
+ /**
+ * Get a description of the access rights for each table available
+ * in a catalog.
+ *
+ *
Only privileges matching the schema and table name
+ * criteria are returned. They are ordered by TABLE_SCHEM,
+ * TABLE_NAME, and PRIVILEGE.
+ *
+ *
Each privilige description has the following columns:
+ *
TABLE_CAT String => table catalog (may be null)
+ *
TABLE_SCHEM String => table schema (may be null)
+ *
TABLE_NAME String => table name
+ *
COLUMN_NAME String => column name
+ *
GRANTOR => grantor of access (may be null)
+ *
GRANTEE String => grantee of access
+ *
PRIVILEGE String => name of access (SELECT,
+ * INSERT, UPDATE, REFRENCES, ...)
+ *
IS_GRANTABLE String => "YES" if grantee is permitted
+ * to grant to others; "NO" if not; null if unknown
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schemaPattern a schema name pattern; "" retrieves those
+ * without a schema
+ * @param tableNamePattern a table name pattern
+ * @return ResultSet each row is a table privilege description
+ * @see #getSearchStringEscape
+ */
+ public java.sql.ResultSet getTablePrivileges(String catalog, String schemaPattern, String tableNamePattern) throws SQLException
+ {
+ // XXX-Not Implemented
+ return null;
+ }
+
+ /**
+ * Get a description of a table's optimal set of columns that
+ * uniquely identifies a row. They are ordered by SCOPE.
+ *
+ *
Each column description has the following columns:
+ *
SCOPE short => actual scope of result
+ *
bestRowTemporary - very temporary, while using row
+ *
bestRowTransaction - valid for remainder of current transaction
+ *
bestRowSession - valid for remainder of current session
+ *
+ *
COLUMN_NAME String => column name
+ *
DATA_TYPE short => SQL data type from java.sql.Types
+ *
TYPE_NAME String => Data source dependent type name
+ *
COLUMN_SIZE int => precision
+ *
BUFFER_LENGTH int => not used
+ *
DECIMAL_DIGITS short => scale
+ *
PSEUDO_COLUMN short => is this a pseudo column
+ * like an Oracle ROWID
+ *
bestRowUnknown - may or may not be pseudo column
+ *
bestRowNotPseudo - is NOT a pseudo column
+ *
bestRowPseudo - is a pseudo column
+ *
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name; "" retrieves those without a schema
+ * @param table a table name
+ * @param scope the scope of interest; use same values as SCOPE
+ * @param nullable include columns that are nullable?
+ * @return ResultSet each row is a column description
+ */
+ // Implementation note: This is required for Borland's JBuilder to work
+ public java.sql.ResultSet getBestRowIdentifier(String catalog, String schema, String table, int scope, boolean nullable) throws SQLException
+ {
+ // for now, this returns an empty result set.
+ Field f[] = new Field[8];
+ ResultSet r; // ResultSet for the SQL query that we need to do
+ Vector v = new Vector(); // The new ResultSet tuple stuff
+
+ f[0] = new Field(connection, new String("SCOPE"), iInt2Oid, 2);
+ f[1] = new Field(connection, new String("COLUMN_NAME"), iVarcharOid, 32);
+ f[2] = new Field(connection, new String("DATA_TYPE"), iInt2Oid, 2);
+ f[3] = new Field(connection, new String("TYPE_NAME"), iVarcharOid, 32);
+ f[4] = new Field(connection, new String("COLUMN_SIZE"), iInt4Oid, 4);
+ f[5] = new Field(connection, new String("BUFFER_LENGTH"), iInt4Oid, 4);
+ f[6] = new Field(connection, new String("DECIMAL_DIGITS"), iInt2Oid, 2);
+ f[7] = new Field(connection, new String("PSEUDO_COLUMN"), iInt2Oid, 2);
+
+ return new ResultSet(connection, f, v, "OK", 1);
+ }
+
+ /**
+ * Get a description of a table's columns that are automatically
+ * updated when any value in a row is updated. They are
+ * unordered.
+ *
+ *
Each column description has the following columns:
+ *
SCOPE short => is not used
+ *
COLUMN_NAME String => column name
+ *
DATA_TYPE short => SQL data type from java.sql.Types
+ *
TYPE_NAME String => Data source dependent type name
+ *
COLUMN_SIZE int => precision
+ *
BUFFER_LENGTH int => length of column value in bytes
+ *
DECIMAL_DIGITS short => scale
+ *
PSEUDO_COLUMN short => is this a pseudo column
+ * like an Oracle ROWID
+ *
versionColumnUnknown - may or may not be pseudo column
+ *
versionColumnNotPseudo - is NOT a pseudo column
+ *
versionColumnPseudo - is a pseudo column
+ *
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name; "" retrieves those without a schema
+ * @param table a table name
+ * @return ResultSet each row is a column description
+ */
+ public java.sql.ResultSet getVersionColumns(String catalog, String schema, String table) throws SQLException
+ {
+ // XXX-Not Implemented
+ return null;
+ }
+
+ /**
+ * Get a description of a table's primary key columns. They
+ * are ordered by COLUMN_NAME.
+ *
+ *
Each column description has the following columns:
+ *
TABLE_CAT String => table catalog (may be null)
+ *
TABLE_SCHEM String => table schema (may be null)
+ *
TABLE_NAME String => table name
+ *
COLUMN_NAME String => column name
+ *
KEY_SEQ short => sequence number within primary key
+ *
PK_NAME String => primary key name (may be null)
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name pattern; "" retrieves those
+ * without a schema
+ * @param table a table name
+ * @return ResultSet each row is a primary key column description
+ */
+ public java.sql.ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException
+ {
+ return connection.createStatement().executeQuery("SELECT " +
+ "'' as TABLE_CAT," +
+ "'' AS TABLE_SCHEM," +
+ "bc.relname AS TABLE_NAME," +
+ "a.attname AS COLUMN_NAME," +
+ "a.attnum as KEY_SEQ,"+
+ "ic.relname as PK_NAME " +
+ " FROM pg_class bc, pg_class ic, pg_index i, pg_attribute a" +
+ " WHERE bc.relkind = 'r' " + // -- not indices
+ " and upper(bc.relname) = upper('"+table+"')" +
+ " and i.indrelid = bc.oid" +
+ " and i.indexrelid = ic.oid" +
+ " and ic.oid = a.attrelid" +
+ " and i.indisprimary='t' " +
+ " ORDER BY table_name, pk_name, key_seq"
+ );
+ }
+
+ /**
+ * Get a description of the primary key columns that are
+ * referenced by a table's foreign key columns (the primary keys
+ * imported by a table). They are ordered by PKTABLE_CAT,
+ * PKTABLE_SCHEM, PKTABLE_NAME, and KEY_SEQ.
+ *
+ *
Each primary key column description has the following columns:
+ *
PKTABLE_CAT String => primary key table catalog
+ * being imported (may be null)
+ *
PKTABLE_SCHEM String => primary key table schema
+ * being imported (may be null)
+ *
PKTABLE_NAME String => primary key table name
+ * being imported
+ *
PKCOLUMN_NAME String => primary key column name
+ * being imported
+ *
FKTABLE_CAT String => foreign key table catalog (may be null)
+ *
FKTABLE_SCHEM String => foreign key table schema (may be null)
+ *
FKTABLE_NAME String => foreign key table name
+ *
FKCOLUMN_NAME String => foreign key column name
+ *
KEY_SEQ short => sequence number within foreign key
+ *
UPDATE_RULE short => What happens to
+ * foreign key when primary is updated:
+ *
importedKeyCascade - change imported key to agree
+ * with primary key update
+ *
importedKeyRestrict - do not allow update of primary
+ * key if it has been imported
+ *
importedKeySetNull - change imported key to NULL if
+ * its primary key has been updated
+ *
+ *
DELETE_RULE short => What happens to
+ * the foreign key when primary is deleted.
+ *
importedKeyCascade - delete rows that import a deleted key
+ *
importedKeyRestrict - do not allow delete of primary
+ * key if it has been imported
+ *
importedKeySetNull - change imported key to NULL if
+ * its primary key has been deleted
+ *
+ *
FK_NAME String => foreign key name (may be null)
+ *
PK_NAME String => primary key name (may be null)
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name pattern; "" retrieves those
+ * without a schema
+ * @param table a table name
+ * @return ResultSet each row is a primary key column description
+ * @see #getExportedKeys
+ */
+ public java.sql.ResultSet getImportedKeys(String catalog, String schema, String table) throws SQLException
+ {
+ // XXX-Not Implemented
+ return null;
+ }
+
+ /**
+ * Get a description of a foreign key columns that reference a
+ * table's primary key columns (the foreign keys exported by a
+ * table). They are ordered by FKTABLE_CAT, FKTABLE_SCHEM,
+ * FKTABLE_NAME, and KEY_SEQ.
+ *
+ *
Each foreign key column description has the following columns:
+ *
PKTABLE_CAT String => primary key table catalog (may be null)
+ *
PKTABLE_SCHEM String => primary key table schema (may be null)
+ *
PKTABLE_NAME String => primary key table name
+ *
PKCOLUMN_NAME String => primary key column name
+ *
FKTABLE_CAT String => foreign key table catalog (may be null)
+ * being exported (may be null)
+ *
FKTABLE_SCHEM String => foreign key table schema (may be null)
+ * being exported (may be null)
+ *
FKTABLE_NAME String => foreign key table name
+ * being exported
+ *
FKCOLUMN_NAME String => foreign key column name
+ * being exported
+ *
KEY_SEQ short => sequence number within foreign key
+ *
UPDATE_RULE short => What happens to
+ * foreign key when primary is updated:
+ *
importedKeyCascade - change imported key to agree
+ * with primary key update
+ *
importedKeyRestrict - do not allow update of primary
+ * key if it has been imported
+ *
importedKeySetNull - change imported key to NULL if
+ * its primary key has been updated
+ *
+ *
DELETE_RULE short => What happens to
+ * the foreign key when primary is deleted.
+ *
importedKeyCascade - delete rows that import a deleted key
+ *
importedKeyRestrict - do not allow delete of primary
+ * key if it has been imported
+ *
importedKeySetNull - change imported key to NULL if
+ * its primary key has been deleted
+ *
+ *
FK_NAME String => foreign key identifier (may be null)
+ *
PK_NAME String => primary key identifier (may be null)
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name pattern; "" retrieves those
+ * without a schema
+ * @param table a table name
+ * @return ResultSet each row is a foreign key column description
+ * @see #getImportedKeys
+ */
+ public java.sql.ResultSet getExportedKeys(String catalog, String schema, String table) throws SQLException
+ {
+ // XXX-Not Implemented
+ return null;
+ }
+
+ /**
+ * Get a description of the foreign key columns in the foreign key
+ * table that reference the primary key columns of the primary key
+ * table (describe how one table imports another's key.) This
+ * should normally return a single foreign key/primary key pair
+ * (most tables only import a foreign key from a table once.) They
+ * are ordered by FKTABLE_CAT, FKTABLE_SCHEM, FKTABLE_NAME, and
+ * KEY_SEQ.
+ *
+ *
Each foreign key column description has the following columns:
+ *
PKTABLE_CAT String => primary key table catalog (may be null)
+ *
PKTABLE_SCHEM String => primary key table schema (may be null)
+ *
PKTABLE_NAME String => primary key table name
+ *
PKCOLUMN_NAME String => primary key column name
+ *
FKTABLE_CAT String => foreign key table catalog (may be null)
+ * being exported (may be null)
+ *
FKTABLE_SCHEM String => foreign key table schema (may be null)
+ * being exported (may be null)
+ *
FKTABLE_NAME String => foreign key table name
+ * being exported
+ *
FKCOLUMN_NAME String => foreign key column name
+ * being exported
+ *
KEY_SEQ short => sequence number within foreign key
+ *
UPDATE_RULE short => What happens to
+ * foreign key when primary is updated:
+ *
importedKeyCascade - change imported key to agree
+ * with primary key update
+ *
importedKeyRestrict - do not allow update of primary
+ * key if it has been imported
+ *
importedKeySetNull - change imported key to NULL if
+ * its primary key has been updated
+ *
+ *
DELETE_RULE short => What happens to
+ * the foreign key when primary is deleted.
+ *
importedKeyCascade - delete rows that import a deleted key
+ *
importedKeyRestrict - do not allow delete of primary
+ * key if it has been imported
+ *
importedKeySetNull - change imported key to NULL if
+ * its primary key has been deleted
+ *
+ *
FK_NAME String => foreign key identifier (may be null)
+ *
PK_NAME String => primary key identifier (may be null)
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name pattern; "" retrieves those
+ * without a schema
+ * @param table a table name
+ * @return ResultSet each row is a foreign key column description
+ * @see #getImportedKeys
+ */
+ public java.sql.ResultSet getCrossReference(String primaryCatalog, String primarySchema, String primaryTable, String foreignCatalog, String foreignSchema, String foreignTable) throws SQLException
+ {
+ // XXX-Not Implemented
+ return null;
+ }
+
+ /**
+ * Get a description of all the standard SQL types supported by
+ * this database. They are ordered by DATA_TYPE and then by how
+ * closely the data type maps to the corresponding JDBC SQL type.
+ *
+ *
Each type description has the following columns:
+ *
TYPE_NAME String => Type name
+ *
DATA_TYPE short => SQL data type from java.sql.Types
+ *
PRECISION int => maximum precision
+ *
LITERAL_PREFIX String => prefix used to quote a literal
+ * (may be null)
+ *
LITERAL_SUFFIX String => suffix used to quote a literal
+ (may be null)
+ *
CREATE_PARAMS String => parameters used in creating
+ * the type (may be null)
+ *
NULLABLE short => can you use NULL for this type?
+ *
typeNoNulls - does not allow NULL values
+ *
typeNullable - allows NULL values
+ *
typeNullableUnknown - nullability unknown
+ *
+ *
CASE_SENSITIVE boolean=> is it case sensitive?
+ *
SEARCHABLE short => can you use "WHERE" based on this type:
+ *
typePredNone - No support
+ *
typePredChar - Only supported with WHERE .. LIKE
+ *
typePredBasic - Supported except for WHERE .. LIKE
+ *
typeSearchable - Supported for all WHERE ..
+ *
+ *
UNSIGNED_ATTRIBUTE boolean => is it unsigned?
+ *
FIXED_PREC_SCALE boolean => can it be a money value?
+ *
AUTO_INCREMENT boolean => can it be used for an
+ * auto-increment value?
+ *
LOCAL_TYPE_NAME String => localized version of type name
+ * (may be null)
+ *
MINIMUM_SCALE short => minimum scale supported
+ *
MAXIMUM_SCALE short => maximum scale supported
+ *
SQL_DATA_TYPE int => unused
+ *
SQL_DATETIME_SUB int => unused
+ *
NUM_PREC_RADIX int => usually 2 or 10
+ *
+ *
+ * @return ResultSet each row is a SQL type description
+ */
+ public java.sql.ResultSet getTypeInfo() throws SQLException
+ {
+ java.sql.ResultSet rs = connection.ExecSQL("select typname from pg_type");
+ if(rs!=null) {
+ Field f[] = new Field[18];
+ ResultSet r; // ResultSet for the SQL query that we need to do
+ Vector v = new Vector(); // The new ResultSet tuple stuff
+
+ f[0] = new Field(connection, new String("TYPE_NAME"), iVarcharOid, 32);
+ f[1] = new Field(connection, new String("DATA_TYPE"), iInt2Oid, 2);
+ f[2] = new Field(connection, new String("PRECISION"), iInt4Oid, 4);
+ f[3] = new Field(connection, new String("LITERAL_PREFIX"), iVarcharOid, 32);
+ f[4] = new Field(connection, new String("LITERAL_SUFFIX"), iVarcharOid, 32);
+ f[5] = new Field(connection, new String("CREATE_PARAMS"), iVarcharOid, 32);
+ f[6] = new Field(connection, new String("NULLABLE"), iInt2Oid, 2);
+ f[7] = new Field(connection, new String("CASE_SENSITIVE"), iBoolOid, 1);
+ f[8] = new Field(connection, new String("SEARCHABLE"), iInt2Oid, 2);
+ f[9] = new Field(connection, new String("UNSIGNED_ATTRIBUTE"), iBoolOid, 1);
+ f[10] = new Field(connection, new String("FIXED_PREC_SCALE"), iBoolOid, 1);
+ f[11] = new Field(connection, new String("AUTO_INCREMENT"), iBoolOid, 1);
+ f[12] = new Field(connection, new String("LOCAL_TYPE_NAME"), iVarcharOid, 32);
+ f[13] = new Field(connection, new String("MINIMUM_SCALE"), iInt2Oid, 2);
+ f[14] = new Field(connection, new String("MAXIMUM_SCALE"), iInt2Oid, 2);
+ f[15] = new Field(connection, new String("SQL_DATA_TYPE"), iInt4Oid, 4);
+ f[16] = new Field(connection, new String("SQL_DATETIME_SUB"), iInt4Oid, 4);
+ f[17] = new Field(connection, new String("NUM_PREC_RADIX"), iInt4Oid, 4);
+
+ // cache some results, this will keep memory useage down, and speed
+ // things up a little.
+ byte b9[] = "9".getBytes();
+ byte b10[] = "10".getBytes();
+ byte bf[] = "f".getBytes();
+ byte bnn[] = Integer.toString(typeNoNulls).getBytes();
+ byte bts[] = Integer.toString(typeSearchable).getBytes();
+
+ while(rs.next()) {
+ byte[][] tuple = new byte[18][];
+ String typname=rs.getString(1);
+ tuple[0] = typname.getBytes();
+ tuple[1] = Integer.toString(Field.getSQLType(typname)).getBytes();
+ tuple[2] = b9; // for now
+ tuple[6] = bnn; // for now
+ tuple[7] = bf; // false for now - not case sensitive
+ tuple[8] = bts;
+ tuple[9] = bf; // false for now - it's signed
+ tuple[10] = bf; // false for now - must handle money
+ tuple[11] = bf; // false for now - handle autoincrement
+ // 12 - LOCAL_TYPE_NAME is null
+ // 13 & 14 ?
+ // 15 & 16 are unused so we return null
+ tuple[17] = b10; // everything is base 10
+ v.addElement(tuple);
+ }
+ rs.close();
+ return new ResultSet(connection, f, v, "OK", 1);
+ }
+
+ return null;
+ }
+
+ /**
+ * Get a description of a table's indices and statistics. They are
+ * ordered by NON_UNIQUE, TYPE, INDEX_NAME, and ORDINAL_POSITION.
+ *
+ *
Each index column description has the following columns:
+ *
TABLE_CAT String => table catalog (may be null)
+ *
TABLE_SCHEM String => table schema (may be null)
+ *
TABLE_NAME String => table name
+ *
NON_UNIQUE boolean => Can index values be non-unique?
+ * false when TYPE is tableIndexStatistic
+ *
INDEX_QUALIFIER String => index catalog (may be null);
+ * null when TYPE is tableIndexStatistic
+ *
INDEX_NAME String => index name; null when TYPE is
+ * tableIndexStatistic
+ *
TYPE short => index type:
+ *
tableIndexStatistic - this identifies table statistics that are
+ * returned in conjuction with a table's index descriptions
+ *
tableIndexClustered - this is a clustered index
+ *
tableIndexHashed - this is a hashed index
+ *
tableIndexOther - this is some other style of index
+ *
+ *
ORDINAL_POSITION short => column sequence number
+ * within index; zero when TYPE is tableIndexStatistic
+ *
COLUMN_NAME String => column name; null when TYPE is
+ * tableIndexStatistic
+ *
ASC_OR_DESC String => column sort sequence, "A" => ascending
+ * "D" => descending, may be null if sort sequence is not supported;
+ * null when TYPE is tableIndexStatistic
+ *
CARDINALITY int => When TYPE is tableIndexStatisic then
+ * this is the number of rows in the table; otherwise it is the
+ * number of unique values in the index.
+ *
PAGES int => When TYPE is tableIndexStatisic then
+ * this is the number of pages used for the table, otherwise it
+ * is the number of pages used for the current index.
+ *
FILTER_CONDITION String => Filter condition, if any.
+ * (may be null)
+ *
+ *
+ * @param catalog a catalog name; "" retrieves those without a catalog
+ * @param schema a schema name pattern; "" retrieves those without a schema
+ * @param table a table name
+ * @param unique when true, return only indices for unique values;
+ * when false, return indices regardless of whether unique or not
+ * @param approximate when true, result is allowed to reflect approximate
+ * or out of data values; when false, results are requested to be
+ * accurate
+ * @return ResultSet each row is an index column description
+ */
+ // Implementation note: This is required for Borland's JBuilder to work
+ public java.sql.ResultSet getIndexInfo(String catalog, String schema, String table, boolean unique, boolean approximate) throws SQLException
+ {
+ // for now, this returns an empty result set.
+ Field f[] = new Field[13];
+ ResultSet r; // ResultSet for the SQL query that we need to do
+ Vector v = new Vector(); // The new ResultSet tuple stuff
+
+ f[0] = new Field(connection, new String("TABLE_CAT"), iVarcharOid, 32);
+ f[1] = new Field(connection, new String("TABLE_SCHEM"), iVarcharOid, 32);
+ f[2] = new Field(connection, new String("TABLE_NAME"), iVarcharOid, 32);
+ f[3] = new Field(connection, new String("NON_UNIQUE"), iBoolOid, 1);
+ f[4] = new Field(connection, new String("INDEX_QUALIFIER"), iVarcharOid, 32);
+ f[5] = new Field(connection, new String("INDEX_NAME"), iVarcharOid, 32);
+ f[6] = new Field(connection, new String("TYPE"), iInt2Oid, 2);
+ f[7] = new Field(connection, new String("ORDINAL_POSITION"), iInt2Oid, 2);
+ f[8] = new Field(connection, new String("COLUMN_NAME"), iVarcharOid, 32);
+ f[9] = new Field(connection, new String("ASC_OR_DESC"), iVarcharOid, 32);
+ f[10] = new Field(connection, new String("CARDINALITY"), iInt4Oid, 4);
+ f[11] = new Field(connection, new String("PAGES"), iInt4Oid, 4);
+ f[12] = new Field(connection, new String("FILTER_CONDITION"), iVarcharOid, 32);
+
+ return new ResultSet(connection, f, v, "OK", 1);
+ }
+
+ // ** JDBC 2 Extensions **
+
+ public boolean deletesAreDetected(int i) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean othersDeletesAreVisible(int i) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public Class getClass(String catalog,
+ String schema,
+ String table,
+ String columnNamePattern
+ ) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public java.sql.Connection getConnection() throws SQLException
+ {
+ return (java.sql.Connection)connection;
+ }
+
+ public java.sql.ResultSet getUDTs(String catalog,
+ String schemaPattern,
+ String typeNamePattern,
+ int[] types
+ ) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean othersInsertsAreVisible(int type) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean updatesAreDetected(int type) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean othersUpdatesAreVisible(int type) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean ownUpdatesAreVisible(int type) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean ownInsertsAreVisible(int type) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean insertsAreDetected(int type) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean ownDeletesAreVisible(int type) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean rowChangesAreDetected(int type) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean rowChangesAreVisible(int type) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean supportsBatchUpdates() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean supportsResultSetConcurrency(int type,int concurrency) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean supportsResultSetType(int type) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+
+}
+
--- /dev/null
+package org.postgresql.jdbc2;
+
+// IMPORTANT NOTE: This file implements the JDBC 2 version of the driver.
+// If you make any modifications to this file, you must make sure that the
+// changes are also made (if relevent) to the related JDBC 1 class in the
+// org.postgresql.jdbc1 package.
+
+import java.io.*;
+import java.math.*;
+import java.sql.*;
+import java.text.*;
+import java.util.*;
+import org.postgresql.largeobject.*;
+import org.postgresql.util.*;
+
+/**
+ * A SQL Statement is pre-compiled and stored in a PreparedStatement object.
+ * This object can then be used to efficiently execute this statement multiple
+ * times.
+ *
+ *
Note: The setXXX methods for setting IN parameter values must
+ * specify types that are compatible with the defined SQL type of the input
+ * parameter. For instance, if the IN parameter has SQL type Integer, then
+ * setInt should be used.
+ *
+ *
If arbitrary parameter type conversions are required, then the setObject
+ * method should be used with a target SQL type.
+ *
+ * @see ResultSet
+ * @see java.sql.PreparedStatement
+ */
+public class PreparedStatement extends Statement implements java.sql.PreparedStatement
+{
+ String sql;
+ String[] templateStrings;
+ String[] inStrings;
+ Connection connection;
+
+ /**
+ * Constructor for the PreparedStatement class.
+ * Split the SQL statement into segments - separated by the arguments.
+ * When we rebuild the thing with the arguments, we can substitute the
+ * args and join the whole thing together.
+ *
+ * @param conn the instanatiating connection
+ * @param sql the SQL statement with ? for IN markers
+ * @exception SQLException if something bad occurs
+ */
+ public PreparedStatement(Connection connection, String sql) throws SQLException
+ {
+ super(connection);
+
+ Vector v = new Vector();
+ boolean inQuotes = false;
+ int lastParmEnd = 0, i;
+
+ this.sql = sql;
+ this.connection = connection;
+ for (i = 0; i < sql.length(); ++i)
+ {
+ int c = sql.charAt(i);
+
+ if (c == '\'')
+ inQuotes = !inQuotes;
+ if (c == '?' && !inQuotes)
+ {
+ v.addElement(sql.substring (lastParmEnd, i));
+ lastParmEnd = i + 1;
+ }
+ }
+ v.addElement(sql.substring (lastParmEnd, sql.length()));
+
+ templateStrings = new String[v.size()];
+ inStrings = new String[v.size() - 1];
+ clearParameters();
+
+ for (i = 0 ; i < templateStrings.length; ++i)
+ templateStrings[i] = (String)v.elementAt(i);
+ }
+
+ /**
+ * A Prepared SQL query is executed and its ResultSet is returned
+ *
+ * @return a ResultSet that contains the data produced by the
+ * query - never null
+ * @exception SQLException if a database access error occurs
+ */
+ public java.sql.ResultSet executeQuery() throws SQLException
+ {
+ StringBuffer s = new StringBuffer();
+ int i;
+
+ for (i = 0 ; i < inStrings.length ; ++i)
+ {
+ if (inStrings[i] == null)
+ throw new PSQLException("postgresql.prep.param",new Integer(i + 1));
+ s.append (templateStrings[i]);
+ s.append (inStrings[i]);
+ }
+ s.append(templateStrings[inStrings.length]);
+ return super.executeQuery(s.toString()); // in Statement class
+ }
+
+ /**
+ * Execute a SQL INSERT, UPDATE or DELETE statement. In addition,
+ * SQL statements that return nothing such as SQL DDL statements can
+ * be executed.
+ *
+ * @return either the row count for INSERT, UPDATE or DELETE; or
+ * 0 for SQL statements that return nothing.
+ * @exception SQLException if a database access error occurs
+ */
+ public int executeUpdate() throws SQLException
+ {
+ StringBuffer s = new StringBuffer();
+ int i;
+
+ for (i = 0 ; i < inStrings.length ; ++i)
+ {
+ if (inStrings[i] == null)
+ throw new PSQLException("postgresql.prep.param",new Integer(i + 1));
+ s.append (templateStrings[i]);
+ s.append (inStrings[i]);
+ }
+ s.append(templateStrings[inStrings.length]);
+ return super.executeUpdate(s.toString()); // in Statement class
+ }
+
+ /**
+ * Set a parameter to SQL NULL
+ *
+ *
Note: You must specify the parameters SQL type (although
+ * PostgreSQL ignores it)
+ *
+ * @param parameterIndex the first parameter is 1, etc...
+ * @param sqlType the SQL type code defined in java.sql.Types
+ * @exception SQLException if a database access error occurs
+ */
+ public void setNull(int parameterIndex, int sqlType) throws SQLException
+ {
+ set(parameterIndex, "null");
+ }
+
+ /**
+ * Set a parameter to a Java boolean value. The driver converts this
+ * to a SQL BIT value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setBoolean(int parameterIndex, boolean x) throws SQLException
+ {
+ set(parameterIndex, x ? "'t'" : "'f'");
+ }
+
+ /**
+ * Set a parameter to a Java byte value. The driver converts this to
+ * a SQL TINYINT value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setByte(int parameterIndex, byte x) throws SQLException
+ {
+ set(parameterIndex, (new Integer(x)).toString());
+ }
+
+ /**
+ * Set a parameter to a Java short value. The driver converts this
+ * to a SQL SMALLINT value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setShort(int parameterIndex, short x) throws SQLException
+ {
+ set(parameterIndex, (new Integer(x)).toString());
+ }
+
+ /**
+ * Set a parameter to a Java int value. The driver converts this to
+ * a SQL INTEGER value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setInt(int parameterIndex, int x) throws SQLException
+ {
+ set(parameterIndex, (new Integer(x)).toString());
+ }
+
+ /**
+ * Set a parameter to a Java long value. The driver converts this to
+ * a SQL BIGINT value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setLong(int parameterIndex, long x) throws SQLException
+ {
+ set(parameterIndex, (new Long(x)).toString());
+ }
+
+ /**
+ * Set a parameter to a Java float value. The driver converts this
+ * to a SQL FLOAT value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setFloat(int parameterIndex, float x) throws SQLException
+ {
+ set(parameterIndex, (new Float(x)).toString());
+ }
+
+ /**
+ * Set a parameter to a Java double value. The driver converts this
+ * to a SQL DOUBLE value when it sends it to the database
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setDouble(int parameterIndex, double x) throws SQLException
+ {
+ set(parameterIndex, (new Double(x)).toString());
+ }
+
+ /**
+ * Set a parameter to a java.lang.BigDecimal value. The driver
+ * converts this to a SQL NUMERIC value when it sends it to the
+ * database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setBigDecimal(int parameterIndex, BigDecimal x) throws SQLException
+ {
+ set(parameterIndex, x.toString());
+ }
+
+ /**
+ * Set a parameter to a Java String value. The driver converts this
+ * to a SQL VARCHAR or LONGVARCHAR value (depending on the arguments
+ * size relative to the driver's limits on VARCHARs) when it sends it
+ * to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setString(int parameterIndex, String x) throws SQLException
+ {
+ // if the passed string is null, then set this column to null
+ if(x==null)
+ set(parameterIndex,"null");
+ else {
+ StringBuffer b = new StringBuffer();
+ int i;
+
+ b.append('\'');
+ for (i = 0 ; i < x.length() ; ++i)
+ {
+ char c = x.charAt(i);
+ if (c == '\\' || c == '\'')
+ b.append((char)'\\');
+ b.append(c);
+ }
+ b.append('\'');
+ set(parameterIndex, b.toString());
+ }
+ }
+
+ /**
+ * Set a parameter to a Java array of bytes. The driver converts this
+ * to a SQL VARBINARY or LONGVARBINARY (depending on the argument's
+ * size relative to the driver's limits on VARBINARYs) when it sends
+ * it to the database.
+ *
+ *
With org.postgresql, this creates a large object, and stores the
+ * objects oid in this column.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setBytes(int parameterIndex, byte x[]) throws SQLException
+ {
+ LargeObjectManager lom = connection.getLargeObjectAPI();
+ int oid = lom.create();
+ LargeObject lob = lom.open(oid);
+ lob.write(x);
+ lob.close();
+ setInt(parameterIndex,oid);
+ }
+
+ /**
+ * Set a parameter to a java.sql.Date value. The driver converts this
+ * to a SQL DATE value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setDate(int parameterIndex, java.sql.Date x) throws SQLException
+ {
+ SimpleDateFormat df = new SimpleDateFormat("''yyyy-MM-dd''");
+
+ set(parameterIndex, df.format(x));
+
+ // The above is how the date should be handled.
+ //
+ // However, in JDK's prior to 1.1.6 (confirmed with the
+ // Linux jdk1.1.3 and the Win95 JRE1.1.5), SimpleDateFormat seems
+ // to format a date to the previous day. So the fix is to add a day
+ // before formatting.
+ //
+ // PS: 86400000 is one day
+ //
+ //set(parameterIndex, df.format(new java.util.Date(x.getTime()+86400000)));
+ }
+
+ /**
+ * Set a parameter to a java.sql.Time value. The driver converts
+ * this to a SQL TIME value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...));
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setTime(int parameterIndex, Time x) throws SQLException
+ {
+ set(parameterIndex, "'" + x.toString() + "'");
+ }
+
+ /**
+ * Set a parameter to a java.sql.Timestamp value. The driver converts
+ * this to a SQL TIMESTAMP value when it sends it to the database.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setTimestamp(int parameterIndex, Timestamp x) throws SQLException
+ {
+ set(parameterIndex, "'" + x.toString() + "'");
+ }
+
+ /**
+ * When a very large ASCII value is input to a LONGVARCHAR parameter,
+ * it may be more practical to send it via a java.io.InputStream.
+ * JDBC will read the data from the stream as needed, until it reaches
+ * end-of-file. The JDBC driver will do any necessary conversion from
+ * ASCII to the database char format.
+ *
+ *
Note: This stream object can either be a standard Java
+ * stream object or your own subclass that implements the standard
+ * interface.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @param length the number of bytes in the stream
+ * @exception SQLException if a database access error occurs
+ */
+ public void setAsciiStream(int parameterIndex, InputStream x, int length) throws SQLException
+ {
+ setBinaryStream(parameterIndex, x, length);
+ }
+
+ /**
+ * When a very large Unicode value is input to a LONGVARCHAR parameter,
+ * it may be more practical to send it via a java.io.InputStream.
+ * JDBC will read the data from the stream as needed, until it reaches
+ * end-of-file. The JDBC driver will do any necessary conversion from
+ * UNICODE to the database char format.
+ *
+ * ** DEPRECIATED IN JDBC 2 **
+ *
+ *
Note: This stream object can either be a standard Java
+ * stream object or your own subclass that implements the standard
+ * interface.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ * @deprecated
+ */
+ public void setUnicodeStream(int parameterIndex, InputStream x, int length) throws SQLException
+ {
+ setBinaryStream(parameterIndex, x, length);
+ }
+
+ /**
+ * When a very large binary value is input to a LONGVARBINARY parameter,
+ * it may be more practical to send it via a java.io.InputStream.
+ * JDBC will read the data from the stream as needed, until it reaches
+ * end-of-file.
+ *
+ *
Note: This stream object can either be a standard Java
+ * stream object or your own subclass that implements the standard
+ * interface.
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the parameter value
+ * @exception SQLException if a database access error occurs
+ */
+ public void setBinaryStream(int parameterIndex, InputStream x, int length) throws SQLException
+ {
+ throw new PSQLException("postgresql.prep.is");
+ }
+
+ /**
+ * In general, parameter values remain in force for repeated used of a
+ * Statement. Setting a parameter value automatically clears its
+ * previous value. However, in coms cases, it is useful to immediately
+ * release the resources used by the current parameter values; this
+ * can be done by calling clearParameters
+ *
+ * @exception SQLException if a database access error occurs
+ */
+ public void clearParameters() throws SQLException
+ {
+ int i;
+
+ for (i = 0 ; i < inStrings.length ; i++)
+ inStrings[i] = null;
+ }
+
+ /**
+ * Set the value of a parameter using an object; use the java.lang
+ * equivalent objects for integral values.
+ *
+ *
The given Java object will be converted to the targetSqlType before
+ * being sent to the database.
+ *
+ *
note that this method may be used to pass database-specific
+ * abstract data types. This is done by using a Driver-specific
+ * Java type and using a targetSqlType of java.sql.Types.OTHER
+ *
+ * @param parameterIndex the first parameter is 1...
+ * @param x the object containing the input parameter value
+ * @param targetSqlType The SQL type to be send to the database
+ * @param scale For java.sql.Types.DECIMAL or java.sql.Types.NUMERIC
+ * types this is the number of digits after the decimal. For
+ * all other types this value will be ignored.
+ * @exception SQLException if a database access error occurs
+ */
+ public void setObject(int parameterIndex, Object x, int targetSqlType, int scale) throws SQLException
+ {
+ switch (targetSqlType)
+ {
+ case Types.TINYINT:
+ case Types.SMALLINT:
+ case Types.INTEGER:
+ case Types.BIGINT:
+ case Types.REAL:
+ case Types.FLOAT:
+ case Types.DOUBLE:
+ case Types.DECIMAL:
+ case Types.NUMERIC:
+ if (x instanceof Boolean)
+ set(parameterIndex, ((Boolean)x).booleanValue() ? "1" : "0");
+ else
+ set(parameterIndex, x.toString());
+ break;
+ case Types.CHAR:
+ case Types.VARCHAR:
+ case Types.LONGVARCHAR:
+ setString(parameterIndex, x.toString());
+ break;
+ case Types.DATE:
+ setDate(parameterIndex, (java.sql.Date)x);
+ break;
+ case Types.TIME:
+ setTime(parameterIndex, (Time)x);
+ break;
+ case Types.TIMESTAMP:
+ setTimestamp(parameterIndex, (Timestamp)x);
+ break;
+ case Types.OTHER:
+ setString(parameterIndex, ((PGobject)x).getValue());
+ break;
+ default:
+ throw new PSQLException("postgresql.prep.type");
+ }
+ }
+
+ public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException
+ {
+ setObject(parameterIndex, x, targetSqlType, 0);
+ }
+
+ /**
+ * This stores an Object into a parameter.
+ *
New for 6.4, if the object is not recognised, but it is
+ * Serializable, then the object is serialised using the
+ * org.postgresql.util.Serialize class.
+ */
+ public void setObject(int parameterIndex, Object x) throws SQLException
+ {
+ if (x instanceof String)
+ setString(parameterIndex, (String)x);
+ else if (x instanceof BigDecimal)
+ setBigDecimal(parameterIndex, (BigDecimal)x);
+ else if (x instanceof Short)
+ setShort(parameterIndex, ((Short)x).shortValue());
+ else if (x instanceof Integer)
+ setInt(parameterIndex, ((Integer)x).intValue());
+ else if (x instanceof Long)
+ setLong(parameterIndex, ((Long)x).longValue());
+ else if (x instanceof Float)
+ setFloat(parameterIndex, ((Float)x).floatValue());
+ else if (x instanceof Double)
+ setDouble(parameterIndex, ((Double)x).doubleValue());
+ else if (x instanceof byte[])
+ setBytes(parameterIndex, (byte[])x);
+ else if (x instanceof java.sql.Date)
+ setDate(parameterIndex, (java.sql.Date)x);
+ else if (x instanceof Time)
+ setTime(parameterIndex, (Time)x);
+ else if (x instanceof Timestamp)
+ setTimestamp(parameterIndex, (Timestamp)x);
+ else if (x instanceof Boolean)
+ setBoolean(parameterIndex, ((Boolean)x).booleanValue());
+ else if (x instanceof PGobject)
+ setString(parameterIndex, ((PGobject)x).getValue());
+ else
+ setLong(parameterIndex, connection.putObject(x));
+ }
+
+ /**
+ * Some prepared statements return multiple results; the execute method
+ * handles these complex statements as well as the simpler form of
+ * statements handled by executeQuery and executeUpdate
+ *
+ * @return true if the next result is a ResultSet; false if it is an
+ * update count or there are no more results
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean execute() throws SQLException
+ {
+ StringBuffer s = new StringBuffer();
+ int i;
+
+ for (i = 0 ; i < inStrings.length ; ++i)
+ {
+ if (inStrings[i] == null)
+ throw new PSQLException("postgresql.prep.param",new Integer(i + 1));
+ s.append (templateStrings[i]);
+ s.append (inStrings[i]);
+ }
+ s.append(templateStrings[inStrings.length]);
+ return super.execute(s.toString()); // in Statement class
+ }
+
+ /**
+ * Returns the SQL statement with the current template values
+ * substituted.
+ */
+ public String toString() {
+ StringBuffer s = new StringBuffer();
+ int i;
+
+ for (i = 0 ; i < inStrings.length ; ++i)
+ {
+ if (inStrings[i] == null)
+ s.append( '?' );
+ else
+ s.append (templateStrings[i]);
+ s.append (inStrings[i]);
+ }
+ s.append(templateStrings[inStrings.length]);
+ return s.toString();
+ }
+
+ // **************************************************************
+ // END OF PUBLIC INTERFACE
+ // **************************************************************
+
+ /**
+ * There are a lot of setXXX classes which all basically do
+ * the same thing. We need a method which actually does the
+ * set for us.
+ *
+ * @param paramIndex the index into the inString
+ * @param s a string to be stored
+ * @exception SQLException if something goes wrong
+ */
+ private void set(int paramIndex, String s) throws SQLException
+ {
+ if (paramIndex < 1 || paramIndex > inStrings.length)
+ throw new PSQLException("postgresql.prep.range");
+ inStrings[paramIndex - 1] = s;
+ }
+
+ // ** JDBC 2 Extensions **
+
+ public void addBatch() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public java.sql.ResultSetMetaData getMetaData() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setArray(int i,Array x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setBlob(int i,Blob x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setCharacterStream(int i,java.io.Reader x,int length) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setClob(int i,Clob x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setNull(int i,int t,String s) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setRef(int i,Ref x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setDate(int i,java.sql.Date d,java.util.Calendar cal) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setTime(int i,Time t,java.util.Calendar cal) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setTimestamp(int i,Timestamp t,java.util.Calendar cal) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+}
--- /dev/null
+package org.postgresql.jdbc2;
+
+// IMPORTANT NOTE: This file implements the JDBC 2 version of the driver.
+// If you make any modifications to this file, you must make sure that the
+// changes are also made (if relevent) to the related JDBC 1 class in the
+// org.postgresql.jdbc1 package.
+
+
+import java.lang.*;
+import java.io.*;
+import java.math.*;
+import java.text.*;
+import java.util.*;
+import java.sql.*;
+import org.postgresql.Field;
+import org.postgresql.largeobject.*;
+import org.postgresql.util.*;
+
+/**
+ * A ResultSet provides access to a table of data generated by executing a
+ * Statement. The table rows are retrieved in sequence. Within a row its
+ * column values can be accessed in any order.
+ *
+ *
A ResultSet maintains a cursor pointing to its current row of data.
+ * Initially the cursor is positioned before the first row. The 'next'
+ * method moves the cursor to the next row.
+ *
+ *
The getXXX methods retrieve column values for the current row. You can
+ * retrieve values either using the index number of the column, or by using
+ * the name of the column. In general using the column index will be more
+ * efficient. Columns are numbered from 1.
+ *
+ *
For maximum portability, ResultSet columns within each row should be read
+ * in left-to-right order and each column should be read only once.
+ *
+ *
For the getXXX methods, the JDBC driver attempts to convert the
+ * underlying data to the specified Java type and returns a suitable Java
+ * value. See the JDBC specification for allowable mappings from SQL types
+ * to Java types with the ResultSet getXXX methods.
+ *
+ *
Column names used as input to getXXX methods are case insenstive. When
+ * performing a getXXX using a column name, if several columns have the same
+ * name, then the value of the first matching column will be returned. The
+ * column name option is designed to be used when column names are used in the
+ * SQL Query. For columns that are NOT explicitly named in the query, it is
+ * best to use column numbers. If column names were used there is no way for
+ * the programmer to guarentee that they actually refer to the intended
+ * columns.
+ *
+ *
A ResultSet is automatically closed by the Statement that generated it
+ * when that Statement is closed, re-executed, or is used to retrieve the
+ * next result from a sequence of multiple results.
+ *
+ *
The number, types and properties of a ResultSet's columns are provided by
+ * the ResultSetMetaData object returned by the getMetaData method.
+ *
+ * @see ResultSetMetaData
+ * @see java.sql.ResultSet
+ */
+public class ResultSet extends org.postgresql.ResultSet implements java.sql.ResultSet
+{
+ /**
+ * Create a new ResultSet - Note that we create ResultSets to
+ * represent the results of everything.
+ *
+ * @param fields an array of Field objects (basically, the
+ * ResultSet MetaData)
+ * @param tuples Vector of the actual data
+ * @param status the status string returned from the back end
+ * @param updateCount the number of rows affected by the operation
+ * @param cursor the positioned update/delete cursor name
+ */
+ public ResultSet(Connection conn, Field[] fields, Vector tuples, String status, int updateCount)
+ {
+ super(conn,fields,tuples,status,updateCount);
+ }
+
+ /**
+ * A ResultSet is initially positioned before its first row,
+ * the first call to next makes the first row the current row;
+ * the second call makes the second row the current row, etc.
+ *
+ *
If an input stream from the previous row is open, it is
+ * implicitly closed. The ResultSet's warning chain is cleared
+ * when a new row is read
+ *
+ * @return true if the new current is valid; false if there are no
+ * more rows
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean next() throws SQLException
+ {
+ if (++current_row >= rows.size())
+ return false;
+ this_row = (byte [][])rows.elementAt(current_row);
+ return true;
+ }
+
+ /**
+ * In some cases, it is desirable to immediately release a ResultSet
+ * database and JDBC resources instead of waiting for this to happen
+ * when it is automatically closed. The close method provides this
+ * immediate release.
+ *
+ *
Note: A ResultSet is automatically closed by the Statement
+ * the Statement that generated it when that Statement is closed,
+ * re-executed, or is used to retrieve the next result from a sequence
+ * of multiple results. A ResultSet is also automatically closed
+ * when it is garbage collected.
+ *
+ * @exception SQLException if a database access error occurs
+ */
+ public void close() throws SQLException
+ {
+ // No-op
+ }
+
+ /**
+ * A column may have the value of SQL NULL; wasNull() reports whether
+ * the last column read had this special value. Note that you must
+ * first call getXXX on a column to try to read its value and then
+ * call wasNull() to find if the value was SQL NULL
+ *
+ * @return true if the last column read was SQL NULL
+ * @exception SQLException if a database access error occurred
+ */
+ public boolean wasNull() throws SQLException
+ {
+ return wasNullFlag;
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java String
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return the column value, null for SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public String getString(int columnIndex) throws SQLException
+ {
+ //byte[] bytes = getBytes(columnIndex);
+ //
+ //if (bytes == null)
+ //return null;
+ //return new String(bytes);
+ if (columnIndex < 1 || columnIndex > fields.length)
+ throw new PSQLException("postgresql.res.colrange");
+ wasNullFlag = (this_row[columnIndex - 1] == null);
+ if(wasNullFlag)
+ return null;
+ return new String(this_row[columnIndex - 1]);
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java boolean
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return the column value, false for SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean getBoolean(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ int c = s.charAt(0);
+ return ((c == 't') || (c == 'T'));
+ }
+ return false; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java byte.
+ *
+ * @param columnIndex the first column is 1, the second is 2,...
+ * @return the column value; 0 if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public byte getByte(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ try
+ {
+ return Byte.parseByte(s);
+ } catch (NumberFormatException e) {
+ throw new PSQLException("postgresql.res.badbyte",s);
+ }
+ }
+ return 0; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java short.
+ *
+ * @param columnIndex the first column is 1, the second is 2,...
+ * @return the column value; 0 if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public short getShort(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ try
+ {
+ return Short.parseShort(s);
+ } catch (NumberFormatException e) {
+ throw new PSQLException("postgresql.res.badshort",s);
+ }
+ }
+ return 0; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java int.
+ *
+ * @param columnIndex the first column is 1, the second is 2,...
+ * @return the column value; 0 if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public int getInt(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ try
+ {
+ return Integer.parseInt(s);
+ } catch (NumberFormatException e) {
+ throw new PSQLException ("postgresql.res.badint",s);
+ }
+ }
+ return 0; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java long.
+ *
+ * @param columnIndex the first column is 1, the second is 2,...
+ * @return the column value; 0 if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public long getLong(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ try
+ {
+ return Long.parseLong(s);
+ } catch (NumberFormatException e) {
+ throw new PSQLException ("postgresql.res.badlong",s);
+ }
+ }
+ return 0; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java float.
+ *
+ * @param columnIndex the first column is 1, the second is 2,...
+ * @return the column value; 0 if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public float getFloat(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ try
+ {
+ return Float.valueOf(s).floatValue();
+ } catch (NumberFormatException e) {
+ throw new PSQLException ("postgresql.res.badfloat",s);
+ }
+ }
+ return 0; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java double.
+ *
+ * @param columnIndex the first column is 1, the second is 2,...
+ * @return the column value; 0 if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public double getDouble(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ try
+ {
+ return Double.valueOf(s).doubleValue();
+ } catch (NumberFormatException e) {
+ throw new PSQLException ("postgresql.res.baddouble",s);
+ }
+ }
+ return 0; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a
+ * java.math.BigDecimal object
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @param scale the number of digits to the right of the decimal
+ * @return the column value; if the value is SQL NULL, null
+ * @exception SQLException if a database access error occurs
+ * @deprecated
+ */
+ public BigDecimal getBigDecimal(int columnIndex, int scale) throws SQLException
+ {
+ String s = getString(columnIndex);
+ BigDecimal val;
+
+ if (s != null)
+ {
+ try
+ {
+ val = new BigDecimal(s);
+ } catch (NumberFormatException e) {
+ throw new PSQLException ("postgresql.res.badbigdec",s);
+ }
+ try
+ {
+ return val.setScale(scale);
+ } catch (ArithmeticException e) {
+ throw new PSQLException ("postgresql.res.badbigdec",s);
+ }
+ }
+ return null; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java byte array.
+ *
+ *
In normal use, the bytes represent the raw values returned by the
+ * backend. However, if the column is an OID, then it is assumed to
+ * refer to a Large Object, and that object is returned as a byte array.
+ *
+ *
Be warned If the large object is huge, then you may run out
+ * of memory.
+ *
+ * @param columnIndex the first column is 1, the second is 2, ...
+ * @return the column value; if the value is SQL NULL, the result
+ * is null
+ * @exception SQLException if a database access error occurs
+ */
+ public byte[] getBytes(int columnIndex) throws SQLException
+ {
+ if (columnIndex < 1 || columnIndex > fields.length)
+ throw new PSQLException("postgresql.res.colrange");
+ wasNullFlag = (this_row[columnIndex - 1] == null);
+
+ // Handle OID's as BLOBS
+ if(!wasNullFlag)
+ if( fields[columnIndex - 1].getOID() == 26) {
+ LargeObjectManager lom = connection.getLargeObjectAPI();
+ LargeObject lob = lom.open(getInt(columnIndex));
+ byte buf[] = lob.read(lob.size());
+ lob.close();
+ return buf;
+ }
+
+ return this_row[columnIndex - 1];
+ }
+
+ /**
+ * Get the value of a column in the current row as a java.sql.Date
+ * object
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return the column value; null if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public java.sql.Date getDate(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+ if(s==null)
+ return null;
+ SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
+ try {
+ return new java.sql.Date(df.parse(s).getTime());
+ } catch (ParseException e) {
+ throw new PSQLException("postgresql.res.baddate",new Integer(e.getErrorOffset()),s);
+ }
+ }
+
+ /**
+ * Get the value of a column in the current row as a java.sql.Time
+ * object
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return the column value; null if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public Time getTime(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+
+ if (s != null)
+ {
+ try
+ {
+ if (s.length() != 5 && s.length() != 8)
+ throw new NumberFormatException("Wrong Length!");
+ int hr = Integer.parseInt(s.substring(0,2));
+ int min = Integer.parseInt(s.substring(3,5));
+ int sec = (s.length() == 5) ? 0 : Integer.parseInt(s.substring(6));
+ return new Time(hr, min, sec);
+ } catch (NumberFormatException e) {
+ throw new PSQLException ("postgresql.res.badtime",s);
+ }
+ }
+ return null; // SQL NULL
+ }
+
+ /**
+ * Get the value of a column in the current row as a
+ * java.sql.Timestamp object
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return the column value; null if SQL NULL
+ * @exception SQLException if a database access error occurs
+ */
+ public Timestamp getTimestamp(int columnIndex) throws SQLException
+ {
+ String s = getString(columnIndex);
+ if(s==null)
+ return null;
+
+ SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:sszzz");
+
+ try {
+ return new Timestamp(df.parse(s).getTime());
+ } catch(ParseException e) {
+ throw new PSQLException("postgresql.res.badtimestamp",new Integer(e.getErrorOffset()),s);
+ }
+ }
+
+ /**
+ * A column value can be retrieved as a stream of ASCII characters
+ * and then read in chunks from the stream. This method is
+ * particular suitable for retrieving large LONGVARCHAR values.
+ * The JDBC driver will do any necessary conversion from the
+ * database format into ASCII.
+ *
+ *
Note: All the data in the returned stream must be read
+ * prior to getting the value of any other column. The next call
+ * to a get method implicitly closes the stream. Also, a stream
+ * may return 0 for available() whether there is data available
+ * or not.
+ *
+ *
We implement an ASCII stream as a Binary stream - we should really
+ * do the data conversion, but I cannot be bothered to implement this
+ * right now.
+ *
+ * @param columnIndex the first column is 1, the second is 2, ...
+ * @return a Java InputStream that delivers the database column
+ * value as a stream of one byte ASCII characters. If the
+ * value is SQL NULL then the result is null
+ * @exception SQLException if a database access error occurs
+ * @see getBinaryStream
+ */
+ public InputStream getAsciiStream(int columnIndex) throws SQLException
+ {
+ return getBinaryStream(columnIndex);
+ }
+
+ /**
+ * A column value can also be retrieved as a stream of Unicode
+ * characters. We implement this as a binary stream.
+ *
+ * ** DEPRECATED IN JDBC 2 **
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return a Java InputStream that delivers the database column value
+ * as a stream of two byte Unicode characters. If the value is
+ * SQL NULL, then the result is null
+ * @exception SQLException if a database access error occurs
+ * @see getAsciiStream
+ * @see getBinaryStream
+ * @deprecated
+ */
+ public InputStream getUnicodeStream(int columnIndex) throws SQLException
+ {
+ return getBinaryStream(columnIndex);
+ }
+
+ /**
+ * A column value can also be retrieved as a binary strea. This
+ * method is suitable for retrieving LONGVARBINARY values.
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return a Java InputStream that delivers the database column value
+ * as a stream of bytes. If the value is SQL NULL, then the result
+ * is null
+ * @exception SQLException if a database access error occurs
+ * @see getAsciiStream
+ * @see getUnicodeStream
+ */
+ public InputStream getBinaryStream(int columnIndex) throws SQLException
+ {
+ byte b[] = getBytes(columnIndex);
+
+ if (b != null)
+ return new ByteArrayInputStream(b);
+ return null; // SQL NULL
+ }
+
+ /**
+ * The following routines simply convert the columnName into
+ * a columnIndex and then call the appropriate routine above.
+ *
+ * @param columnName is the SQL name of the column
+ * @return the column value
+ * @exception SQLException if a database access error occurs
+ */
+ public String getString(String columnName) throws SQLException
+ {
+ return getString(findColumn(columnName));
+ }
+
+ public boolean getBoolean(String columnName) throws SQLException
+ {
+ return getBoolean(findColumn(columnName));
+ }
+
+ public byte getByte(String columnName) throws SQLException
+ {
+
+ return getByte(findColumn(columnName));
+ }
+
+ public short getShort(String columnName) throws SQLException
+ {
+ return getShort(findColumn(columnName));
+ }
+
+ public int getInt(String columnName) throws SQLException
+ {
+ return getInt(findColumn(columnName));
+ }
+
+ public long getLong(String columnName) throws SQLException
+ {
+ return getLong(findColumn(columnName));
+ }
+
+ public float getFloat(String columnName) throws SQLException
+ {
+ return getFloat(findColumn(columnName));
+ }
+
+ public double getDouble(String columnName) throws SQLException
+ {
+ return getDouble(findColumn(columnName));
+ }
+
+ /**
+ * @deprecated
+ */
+ public BigDecimal getBigDecimal(String columnName, int scale) throws SQLException
+ {
+ return getBigDecimal(findColumn(columnName), scale);
+ }
+
+ public byte[] getBytes(String columnName) throws SQLException
+ {
+ return getBytes(findColumn(columnName));
+ }
+
+ public java.sql.Date getDate(String columnName) throws SQLException
+ {
+ return getDate(findColumn(columnName));
+ }
+
+ public Time getTime(String columnName) throws SQLException
+ {
+ return getTime(findColumn(columnName));
+ }
+
+ public Timestamp getTimestamp(String columnName) throws SQLException
+ {
+ return getTimestamp(findColumn(columnName));
+ }
+
+ public InputStream getAsciiStream(String columnName) throws SQLException
+ {
+ return getAsciiStream(findColumn(columnName));
+ }
+
+ /**
+ *
+ * ** DEPRECATED IN JDBC 2 **
+ *
+ * @deprecated
+ */
+ public InputStream getUnicodeStream(String columnName) throws SQLException
+ {
+ return getUnicodeStream(findColumn(columnName));
+ }
+
+ public InputStream getBinaryStream(String columnName) throws SQLException
+ {
+ return getBinaryStream(findColumn(columnName));
+ }
+
+ /**
+ * The first warning reported by calls on this ResultSet is
+ * returned. Subsequent ResultSet warnings will be chained
+ * to this SQLWarning.
+ *
+ *
The warning chain is automatically cleared each time a new
+ * row is read.
+ *
+ *
Note: This warning chain only covers warnings caused by
+ * ResultSet methods. Any warnings caused by statement methods
+ * (such as reading OUT parameters) will be chained on the
+ * Statement object.
+ *
+ * @return the first SQLWarning or null;
+ * @exception SQLException if a database access error occurs.
+ */
+ public SQLWarning getWarnings() throws SQLException
+ {
+ return warnings;
+ }
+
+ /**
+ * After this call, getWarnings returns null until a new warning
+ * is reported for this ResultSet
+ *
+ * @exception SQLException if a database access error occurs
+ */
+ public void clearWarnings() throws SQLException
+ {
+ warnings = null;
+ }
+
+ /**
+ * Get the name of the SQL cursor used by this ResultSet
+ *
+ *
In SQL, a result table is retrieved though a cursor that is
+ * named. The current row of a result can be updated or deleted
+ * using a positioned update/delete statement that references
+ * the cursor name.
+ *
+ *
JDBC supports this SQL feature by providing the name of the
+ * SQL cursor used by a ResultSet. The current row of a ResulSet
+ * is also the current row of this SQL cursor.
+ *
+ *
Note: If positioned update is not supported, a SQLException
+ * is thrown.
+ *
+ * @return the ResultSet's SQL cursor name.
+ * @exception SQLException if a database access error occurs
+ */
+ public String getCursorName() throws SQLException
+ {
+ return connection.getCursorName();
+ }
+
+ /**
+ * The numbers, types and properties of a ResultSet's columns are
+ * provided by the getMetaData method
+ *
+ * @return a description of the ResultSet's columns
+ * @exception SQLException if a database access error occurs
+ */
+ public java.sql.ResultSetMetaData getMetaData() throws SQLException
+ {
+ return new ResultSetMetaData(rows, fields);
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java object
+ *
+ *
This method will return the value of the given column as a
+ * Java object. The type of the Java object will be the default
+ * Java Object type corresponding to the column's SQL type, following
+ * the mapping specified in the JDBC specification.
+ *
+ *
This method may also be used to read database specific abstract
+ * data types.
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return a Object holding the column value
+ * @exception SQLException if a database access error occurs
+ */
+ public Object getObject(int columnIndex) throws SQLException
+ {
+ Field field;
+
+ if (columnIndex < 1 || columnIndex > fields.length)
+ throw new PSQLException("postgresql.res.colrange");
+ field = fields[columnIndex - 1];
+
+ // some fields can be null, mainly from those returned by MetaData methods
+ if(field==null) {
+ wasNullFlag=true;
+ return null;
+ }
+
+ switch (field.getSQLType())
+ {
+ case Types.BIT:
+ return new Boolean(getBoolean(columnIndex));
+ case Types.SMALLINT:
+ return new Integer(getInt(columnIndex));
+ case Types.INTEGER:
+ return new Integer(getInt(columnIndex));
+ case Types.BIGINT:
+ return new Long(getLong(columnIndex));
+ case Types.NUMERIC:
+ return getBigDecimal(columnIndex, ((field.mod-4) & 0xffff));
+ case Types.REAL:
+ return new Float(getFloat(columnIndex));
+ case Types.DOUBLE:
+ return new Double(getDouble(columnIndex));
+ case Types.CHAR:
+ case Types.VARCHAR:
+ return getString(columnIndex);
+ case Types.DATE:
+ return getDate(columnIndex);
+ case Types.TIME:
+ return getTime(columnIndex);
+ case Types.TIMESTAMP:
+ return getTimestamp(columnIndex);
+ default:
+ return connection.getObject(field.getTypeName(), getString(columnIndex));
+ }
+ }
+
+ /**
+ * Get the value of a column in the current row as a Java object
+ *
+ *
This method will return the value of the given column as a
+ * Java object. The type of the Java object will be the default
+ * Java Object type corresponding to the column's SQL type, following
+ * the mapping specified in the JDBC specification.
+ *
+ *
This method may also be used to read database specific abstract
+ * data types.
+ *
+ * @param columnName is the SQL name of the column
+ * @return a Object holding the column value
+ * @exception SQLException if a database access error occurs
+ */
+ public Object getObject(String columnName) throws SQLException
+ {
+ return getObject(findColumn(columnName));
+ }
+
+ /**
+ * Map a ResultSet column name to a ResultSet column index
+ *
+ * @param columnName the name of the column
+ * @return the column index
+ * @exception SQLException if a database access error occurs
+ */
+ public int findColumn(String columnName) throws SQLException
+ {
+ int i;
+
+ for (i = 0 ; i < fields.length; ++i)
+ if (fields[i].name.equalsIgnoreCase(columnName))
+ return (i+1);
+ throw new PSQLException ("postgresql.res.colname",columnName);
+ }
+
+ // ** JDBC 2 Extensions **
+
+ public boolean absolute(int index) throws SQLException
+ {
+ // Peter: Added because negative indices read from the end of the
+ // ResultSet
+ if(index<0)
+ index=rows.size()+index;
+
+ if (index==0 || index > rows.size())
+ return false;
+
+ this_row = (byte [][])rows.elementAt(index);
+ return true;
+ }
+
+ public void afterLast() throws SQLException
+ {
+ current_row = rows.size() + 1;
+ }
+
+ public void beforeFirst() throws SQLException
+ {
+ current_row = 0;
+ }
+
+ public void cancelRowUpdates() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void deleteRow() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean first() throws SQLException
+ {
+ if (rows.size() <= 0)
+ return false;
+ current_row = 0;
+ this_row = (byte [][])rows.elementAt(current_row);
+ return true;
+ }
+
+ public Array getArray(String colName) throws SQLException
+ {
+ return getArray(findColumn(colName));
+ }
+
+ public Array getArray(int i) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public java.math.BigDecimal getBigDecimal(int columnIndex) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public java.math.BigDecimal getBigDecimal(String columnName) throws SQLException
+ {
+ return getBigDecimal(findColumn(columnName));
+ }
+
+ public Blob getBlob(String columnName) throws SQLException
+ {
+ return getBlob(findColumn(columnName));
+ }
+
+ public Blob getBlob(int i) throws SQLException
+ {
+ return new org.postgresql.largeobject.PGblob(connection,getInt(i));
+ }
+
+ public java.io.Reader getCharacterStream(String columnName) throws SQLException
+ {
+ return getCharacterStream(findColumn(columnName));
+ }
+
+ public java.io.Reader getCharacterStream(int i) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public Clob getClob(String columnName) throws SQLException
+ {
+ return getClob(findColumn(columnName));
+ }
+
+ public Clob getClob(int i) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public int getConcurrency() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public java.sql.Date getDate(int i,java.util.Calendar cal) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public Time getTime(int i,java.util.Calendar cal) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public Timestamp getTimestamp(int i,java.util.Calendar cal) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public java.sql.Date getDate(String c,java.util.Calendar cal) throws SQLException
+ {
+ return getDate(findColumn(c),cal);
+ }
+
+ public Time getTime(String c,java.util.Calendar cal) throws SQLException
+ {
+ return getTime(findColumn(c),cal);
+ }
+
+ public Timestamp getTimestamp(String c,java.util.Calendar cal) throws SQLException
+ {
+ return getTimestamp(findColumn(c),cal);
+ }
+
+ public int getFetchDirection() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public int getFetchSize() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public int getKeysetSize() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public Object getObject(String columnName,java.util.Map map) throws SQLException
+ {
+ return getObject(findColumn(columnName),map);
+ }
+
+ public Object getObject(int i,java.util.Map map) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public Ref getRef(String columnName) throws SQLException
+ {
+ return getRef(findColumn(columnName));
+ }
+
+ public Ref getRef(int i) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public int getRow() throws SQLException
+ {
+ return current_row;
+ }
+
+ // This one needs some thought, as not all ResultSets come from a statement
+ public java.sql.Statement getStatement() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public int getType() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void insertRow() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean isAfterLast() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean isBeforeFirst() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean isFirst() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean isLast() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean last() throws SQLException
+ {
+ if (rows.size() <= 0)
+ return false;
+ current_row = rows.size() - 1;
+ this_row = (byte [][])rows.elementAt(current_row);
+ return true;
+ }
+
+ public void moveToCurrentRow() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void moveToInsertRow() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean previous() throws SQLException
+ {
+ if (--current_row < 0)
+ return false;
+ this_row = (byte [][])rows.elementAt(current_row);
+ return true;
+ }
+
+ public void refreshRow() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ // Peter: Implemented in 7.0
+ public boolean relative(int rows) throws SQLException
+ {
+ return absolute(current_row+rows);
+ }
+
+ public boolean rowDeleted() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean rowInserted() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public boolean rowUpdated() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setFetchDirection(int direction) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setFetchSize(int rows) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setKeysetSize(int keys) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateAsciiStream(int columnIndex,
+ java.io.InputStream x,
+ int length
+ ) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateAsciiStream(String columnName,
+ java.io.InputStream x,
+ int length
+ ) throws SQLException
+ {
+ updateAsciiStream(findColumn(columnName),x,length);
+ }
+
+ public void updateBigDecimal(int columnIndex,
+ java.math.BigDecimal x
+ ) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateBigDecimal(String columnName,
+ java.math.BigDecimal x
+ ) throws SQLException
+ {
+ updateBigDecimal(findColumn(columnName),x);
+ }
+
+ public void updateBinaryStream(int columnIndex,
+ java.io.InputStream x,
+ int length
+ ) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateBinaryStream(String columnName,
+ java.io.InputStream x,
+ int length
+ ) throws SQLException
+ {
+ updateBinaryStream(findColumn(columnName),x,length);
+ }
+
+ public void updateBoolean(int columnIndex,boolean x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateBoolean(String columnName,boolean x) throws SQLException
+ {
+ updateBoolean(findColumn(columnName),x);
+ }
+
+ public void updateByte(int columnIndex,byte x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateByte(String columnName,byte x) throws SQLException
+ {
+ updateByte(findColumn(columnName),x);
+ }
+
+ public void updateBytes(String columnName,byte[] x) throws SQLException
+ {
+ updateBytes(findColumn(columnName),x);
+ }
+
+ public void updateBytes(int columnIndex,byte[] x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateCharacterStream(int columnIndex,
+ java.io.Reader x,
+ int length
+ ) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateCharacterStream(String columnName,
+ java.io.Reader x,
+ int length
+ ) throws SQLException
+ {
+ updateCharacterStream(findColumn(columnName),x,length);
+ }
+
+ public void updateDate(int columnIndex,java.sql.Date x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateDate(String columnName,java.sql.Date x) throws SQLException
+ {
+ updateDate(findColumn(columnName),x);
+ }
+
+ public void updateDouble(int columnIndex,double x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateDouble(String columnName,double x) throws SQLException
+ {
+ updateDouble(findColumn(columnName),x);
+ }
+
+ public void updateFloat(int columnIndex,float x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateFloat(String columnName,float x) throws SQLException
+ {
+ updateFloat(findColumn(columnName),x);
+ }
+
+ public void updateInt(int columnIndex,int x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateInt(String columnName,int x) throws SQLException
+ {
+ updateInt(findColumn(columnName),x);
+ }
+
+ public void updateLong(int columnIndex,long x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateLong(String columnName,long x) throws SQLException
+ {
+ updateLong(findColumn(columnName),x);
+ }
+
+ public void updateNull(int columnIndex) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateNull(String columnName) throws SQLException
+ {
+ updateNull(findColumn(columnName));
+ }
+
+ public void updateObject(int columnIndex,Object x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateObject(String columnName,Object x) throws SQLException
+ {
+ updateObject(findColumn(columnName),x);
+ }
+
+ public void updateObject(int columnIndex,Object x,int scale) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateObject(String columnName,Object x,int scale) throws SQLException
+ {
+ updateObject(findColumn(columnName),x,scale);
+ }
+
+ public void updateRow() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateShort(int columnIndex,short x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateShort(String columnName,short x) throws SQLException
+ {
+ updateShort(findColumn(columnName),x);
+ }
+
+ public void updateString(int columnIndex,String x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateString(String columnName,String x) throws SQLException
+ {
+ updateString(findColumn(columnName),x);
+ }
+
+ public void updateTime(int columnIndex,Time x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateTime(String columnName,Time x) throws SQLException
+ {
+ updateTime(findColumn(columnName),x);
+ }
+
+ public void updateTimestamp(int columnIndex,Timestamp x) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void updateTimestamp(String columnName,Timestamp x) throws SQLException
+ {
+ updateTimestamp(findColumn(columnName),x);
+ }
+
+}
+
--- /dev/null
+package org.postgresql.jdbc2;
+
+// IMPORTANT NOTE: This file implements the JDBC 2 version of the driver.
+// If you make any modifications to this file, you must make sure that the
+// changes are also made (if relevent) to the related JDBC 1 class in the
+// org.postgresql.jdbc1 package.
+
+import java.lang.*;
+import java.sql.*;
+import java.util.*;
+import org.postgresql.*;
+import org.postgresql.util.*;
+
+/**
+ * A ResultSetMetaData object can be used to find out about the types and
+ * properties of the columns in a ResultSet
+ *
+ * @see java.sql.ResultSetMetaData
+ */
+public class ResultSetMetaData implements java.sql.ResultSetMetaData
+{
+ Vector rows;
+ Field[] fields;
+
+ /**
+ * Initialise for a result with a tuple set and
+ * a field descriptor set
+ *
+ * @param rows the Vector of rows returned by the ResultSet
+ * @param fields the array of field descriptors
+ */
+ public ResultSetMetaData(Vector rows, Field[] fields)
+ {
+ this.rows = rows;
+ this.fields = fields;
+ }
+
+ /**
+ * Whats the number of columns in the ResultSet?
+ *
+ * @return the number
+ * @exception SQLException if a database access error occurs
+ */
+ public int getColumnCount() throws SQLException
+ {
+ return fields.length;
+ }
+
+ /**
+ * Is the column automatically numbered (and thus read-only)
+ * I believe that PostgreSQL does not support this feature.
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isAutoIncrement(int column) throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Does a column's case matter? ASSUMPTION: Any field that is
+ * not obviously case insensitive is assumed to be case sensitive
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isCaseSensitive(int column) throws SQLException
+ {
+ int sql_type = getField(column).getSQLType();
+
+ switch (sql_type)
+ {
+ case Types.SMALLINT:
+ case Types.INTEGER:
+ case Types.FLOAT:
+ case Types.REAL:
+ case Types.DOUBLE:
+ case Types.DATE:
+ case Types.TIME:
+ case Types.TIMESTAMP:
+ return false;
+ default:
+ return true;
+ }
+ }
+
+ /**
+ * Can the column be used in a WHERE clause? Basically for
+ * this, I split the functions into two types: recognised
+ * types (which are always useable), and OTHER types (which
+ * may or may not be useable). The OTHER types, for now, I
+ * will assume they are useable. We should really query the
+ * catalog to see if they are useable.
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return true if they can be used in a WHERE clause
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isSearchable(int column) throws SQLException
+ {
+ int sql_type = getField(column).getSQLType();
+
+ // This switch is pointless, I know - but it is a set-up
+ // for further expansion.
+ switch (sql_type)
+ {
+ case Types.OTHER:
+ return true;
+ default:
+ return true;
+ }
+ }
+
+ /**
+ * Is the column a cash value? 6.1 introduced the cash/money
+ * type, which haven't been incorporated as of 970414, so I
+ * just check the type name for both 'cash' and 'money'
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return true if its a cash column
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isCurrency(int column) throws SQLException
+ {
+ String type_name = getField(column).getTypeName();
+
+ return type_name.equals("cash") || type_name.equals("money");
+ }
+
+ /**
+ * Can you put a NULL in this column? I think this is always
+ * true in 6.1's case. It would only be false if the field had
+ * been defined NOT NULL (system catalogs could be queried?)
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return one of the columnNullable values
+ * @exception SQLException if a database access error occurs
+ */
+ public int isNullable(int column) throws SQLException
+ {
+ return columnNullable; // We can always put NULL in
+ }
+
+ /**
+ * Is the column a signed number? In PostgreSQL, all numbers
+ * are signed, so this is trivial. However, strings are not
+ * signed (duh!)
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isSigned(int column) throws SQLException
+ {
+ int sql_type = getField(column).getSQLType();
+
+ switch (sql_type)
+ {
+ case Types.SMALLINT:
+ case Types.INTEGER:
+ case Types.FLOAT:
+ case Types.REAL:
+ case Types.DOUBLE:
+ return true;
+ case Types.DATE:
+ case Types.TIME:
+ case Types.TIMESTAMP:
+ return false; // I don't know about these?
+ default:
+ return false;
+ }
+ }
+
+ /**
+ * What is the column's normal maximum width in characters?
+ *
+ * @param column the first column is 1, the second is 2, etc.
+ * @return the maximum width
+ * @exception SQLException if a database access error occurs
+ */
+ public int getColumnDisplaySize(int column) throws SQLException
+ {
+ Field f = getField(column);
+ String type_name = f.getTypeName();
+ int sql_type = f.getSQLType();
+ int typmod = f.mod;
+
+ // I looked at other JDBC implementations and couldn't find a consistent
+ // interpretation of the "display size" for numeric values, so this is our's
+ // FIXME: currently, only types with a SQL92 or SQL3 pendant are implemented -
[email protected]+
+ // fixed length data types
+ if (type_name.equals( "int2" )) return 6; // -32768 to +32768 (5 digits and a sign)
+ if (type_name.equals( "int4" )
+ || type_name.equals( "oid" )) return 11; // -2147483648 to +2147483647
+ if (type_name.equals( "int8" )) return 20; // -9223372036854775808 to +9223372036854775807
+ if (type_name.equals( "money" )) return 12; // MONEY = DECIMAL(9,2)
+ if (type_name.equals( "float4" )) return 11; // i checked it out ans wasn't able to produce more than 11 digits
+ if (type_name.equals( "float8" )) return 20; // dito, 20
+ if (type_name.equals( "char" )) return 1;
+ if (type_name.equals( "bool" )) return 1;
+ if (type_name.equals( "date" )) return 14; // "01/01/4713 BC" - "31/12/32767 AD"
+ if (type_name.equals( "time" )) return 8; // 00:00:00-23:59:59
+ if (type_name.equals( "timestamp" )) return 22; // hhmmm ... the output looks like this: 1999-08-03 22:22:08+02
+
+ // variable length fields
+ typmod -= 4;
+ if (type_name.equals( "bpchar" )
+ || type_name.equals( "varchar" )) return typmod; // VARHDRSZ=sizeof(int32)=4
+ if (type_name.equals( "numeric" )) return ( (typmod >>16) & 0xffff )
+ + 1 + ( typmod & 0xffff ); // DECIMAL(p,s) = (p digits).(s digits)
+
+ // if we don't know better
+ return f.length;
+ }
+
+ /**
+ * What is the suggested column title for use in printouts and
+ * displays? We suggest the ColumnName!
+ *
+ * @param column the first column is 1, the second is 2, etc.
+ * @return the column label
+ * @exception SQLException if a database access error occurs
+ */
+ public String getColumnLabel(int column) throws SQLException
+ {
+ return getColumnName(column);
+ }
+
+ /**
+ * What's a column's name?
+ *
+ * @param column the first column is 1, the second is 2, etc.
+ * @return the column name
+ * @exception SQLException if a database access error occurs
+ */
+ public String getColumnName(int column) throws SQLException
+ {
+ Field f = getField(column);
+ if(f!=null)
+ return f.name;
+ return "field"+column;
+ }
+
+ /**
+ * What is a column's table's schema? This relies on us knowing
+ * the table name....which I don't know how to do as yet. The
+ * JDBC specification allows us to return "" if this is not
+ * applicable.
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return the Schema
+ * @exception SQLException if a database access error occurs
+ */
+ public String getSchemaName(int column) throws SQLException
+ {
+ return "";
+ }
+
+ /**
+ * What is a column's number of decimal digits.
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return the precision
+ * @exception SQLException if a database access error occurs
+ */
+ public int getPrecision(int column) throws SQLException
+ {
+ int sql_type = getField(column).getSQLType();
+
+ switch (sql_type)
+ {
+ case Types.SMALLINT:
+ return 5;
+ case Types.INTEGER:
+ return 10;
+ case Types.REAL:
+ return 8;
+ case Types.FLOAT:
+ return 16;
+ case Types.DOUBLE:
+ return 16;
+ case Types.VARCHAR:
+ return 0;
+ default:
+ return 0;
+ }
+ }
+
+ /**
+ * What is a column's number of digits to the right of the
+ * decimal point?
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return the scale
+ * @exception SQLException if a database access error occurs
+ */
+ public int getScale(int column) throws SQLException
+ {
+ int sql_type = getField(column).getSQLType();
+
+ switch (sql_type)
+ {
+ case Types.SMALLINT:
+ return 0;
+ case Types.INTEGER:
+ return 0;
+ case Types.REAL:
+ return 8;
+ case Types.FLOAT:
+ return 16;
+ case Types.DOUBLE:
+ return 16;
+ case Types.VARCHAR:
+ return 0;
+ default:
+ return 0;
+ }
+ }
+
+ /**
+ * Whats a column's table's name? How do I find this out? Both
+ * getSchemaName() and getCatalogName() rely on knowing the table
+ * Name, so we need this before we can work on them.
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return column name, or "" if not applicable
+ * @exception SQLException if a database access error occurs
+ */
+ public String getTableName(int column) throws SQLException
+ {
+ return "";
+ }
+
+ /**
+ * What's a column's table's catalog name? As with getSchemaName(),
+ * we can say that if getTableName() returns n/a, then we can too -
+ * otherwise, we need to work on it.
+ *
+ * @param column the first column is 1, the second is 2...
+ * @return catalog name, or "" if not applicable
+ * @exception SQLException if a database access error occurs
+ */
+ public String getCatalogName(int column) throws SQLException
+ {
+ return "";
+ }
+
+ /**
+ * What is a column's SQL Type? (java.sql.Type int)
+ *
+ * @param column the first column is 1, the second is 2, etc.
+ * @return the java.sql.Type value
+ * @exception SQLException if a database access error occurs
+ * @see org.postgresql.Field#getSQLType
+ * @see java.sql.Types
+ */
+ public int getColumnType(int column) throws SQLException
+ {
+ return getField(column).getSQLType();
+ }
+
+ /**
+ * Whats is the column's data source specific type name?
+ *
+ * @param column the first column is 1, the second is 2, etc.
+ * @return the type name
+ * @exception SQLException if a database access error occurs
+ */
+ public String getColumnTypeName(int column) throws SQLException
+ {
+ return getField(column).getTypeName();
+ }
+
+ /**
+ * Is the column definitely not writable? In reality, we would
+ * have to check the GRANT/REVOKE stuff for this to be effective,
+ * and I haven't really looked into that yet, so this will get
+ * re-visited.
+ *
+ * @param column the first column is 1, the second is 2, etc.
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isReadOnly(int column) throws SQLException
+ {
+ return false;
+ }
+
+ /**
+ * Is it possible for a write on the column to succeed? Again, we
+ * would in reality have to check the GRANT/REVOKE stuff, which
+ * I haven't worked with as yet. However, if it isn't ReadOnly, then
+ * it is obviously writable.
+ *
+ * @param column the first column is 1, the second is 2, etc.
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isWritable(int column) throws SQLException
+ {
+ if (isReadOnly(column))
+ return true;
+ else
+ return false;
+ }
+
+ /**
+ * Will a write on this column definately succeed? Hmmm...this
+ * is a bad one, since the two preceding functions have not been
+ * really defined. I cannot tell is the short answer. I thus
+ * return isWritable() just to give us an idea.
+ *
+ * @param column the first column is 1, the second is 2, etc..
+ * @return true if so
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean isDefinitelyWritable(int column) throws SQLException
+ {
+ return isWritable(column);
+ }
+
+ // ********************************************************
+ // END OF PUBLIC INTERFACE
+ // ********************************************************
+
+ /**
+ * For several routines in this package, we need to convert
+ * a columnIndex into a Field[] descriptor. Rather than do
+ * the same code several times, here it is.
+ *
+ * @param columnIndex the first column is 1, the second is 2...
+ * @return the Field description
+ * @exception SQLException if a database access error occurs
+ */
+ private Field getField(int columnIndex) throws SQLException
+ {
+ if (columnIndex < 1 || columnIndex > fields.length)
+ throw new PSQLException("postgresql.res.colrange");
+ return fields[columnIndex - 1];
+ }
+
+ // ** JDBC 2 Extensions **
+
+ // This can hook into our PG_Object mechanism
+ public String getColumnClassName(int column) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+}
+
--- /dev/null
+package org.postgresql.jdbc2;
+
+// IMPORTANT NOTE: This file implements the JDBC 2 version of the driver.
+// If you make any modifications to this file, you must make sure that the
+// changes are also made (if relevent) to the related JDBC 1 class in the
+// org.postgresql.jdbc1 package.
+
+import java.sql.*;
+import java.util.Vector;
+import org.postgresql.util.*;
+
+/**
+ * A Statement object is used for executing a static SQL statement and
+ * obtaining the results produced by it.
+ *
+ *
Only one ResultSet per Statement can be open at any point in time.
+ * Therefore, if the reading of one ResultSet is interleaved with the
+ * reading of another, each must have been generated by different
+ * Statements. All statement execute methods implicitly close a
+ * statement's current ResultSet if an open one exists.
+ *
+ * @see java.sql.Statement
+ * @see ResultSet
+ */
+public class Statement implements java.sql.Statement
+{
+ Connection connection; // The connection who created us
+ java.sql.ResultSet result = null; // The current results
+ SQLWarning warnings = null; // The warnings chain.
+ int timeout = 0; // The timeout for a query (not used)
+ boolean escapeProcessing = true;// escape processing flag
+ private Vector batch=null;
+
+ /**
+ * Constructor for a Statement. It simply sets the connection
+ * that created us.
+ *
+ * @param c the Connection instantation that creates us
+ */
+ public Statement (Connection c)
+ {
+ connection = c;
+ }
+
+ /**
+ * Execute a SQL statement that retruns a single ResultSet
+ *
+ * @param sql typically a static SQL SELECT statement
+ * @return a ResulSet that contains the data produced by the query
+ * @exception SQLException if a database access error occurs
+ */
+ public java.sql.ResultSet executeQuery(String sql) throws SQLException
+ {
+ this.execute(sql);
+ while (result != null && !((org.postgresql.ResultSet)result).reallyResultSet())
+ result = ((org.postgresql.ResultSet)result).getNext();
+ if (result == null)
+ throw new PSQLException("postgresql.stat.noresult");
+ return result;
+ }
+
+ /**
+ * Execute a SQL INSERT, UPDATE or DELETE statement. In addition
+ * SQL statements that return nothing such as SQL DDL statements
+ * can be executed
+ *
+ * @param sql a SQL statement
+ * @return either a row count, or 0 for SQL commands
+ * @exception SQLException if a database access error occurs
+ */
+ public int executeUpdate(String sql) throws SQLException
+ {
+ this.execute(sql);
+ if (((org.postgresql.ResultSet)result).reallyResultSet())
+ throw new PSQLException("postgresql.stat.result");
+ return this.getUpdateCount();
+ }
+
+ /**
+ * In many cases, it is desirable to immediately release a
+ * Statement's database and JDBC resources instead of waiting
+ * for this to happen when it is automatically closed. The
+ * close method provides this immediate release.
+ *
+ *
Note: A Statement is automatically closed when it is
+ * garbage collected. When a Statement is closed, its current
+ * ResultSet, if one exists, is also closed.
+ *
+ * @exception SQLException if a database access error occurs (why?)
+ */
+ public void close() throws SQLException
+ {
+ result = null;
+ }
+
+ /**
+ * The maxFieldSize limit (in bytes) is the maximum amount of
+ * data returned for any column value; it only applies to
+ * BINARY, VARBINARY, LONGVARBINARY, CHAR, VARCHAR and LONGVARCHAR
+ * columns. If the limit is exceeded, the excess data is silently
+ * discarded.
+ *
+ * @return the current max column size limit; zero means unlimited
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxFieldSize() throws SQLException
+ {
+ return 8192; // We cannot change this
+ }
+
+ /**
+ * Sets the maxFieldSize - NOT! - We throw an SQLException just
+ * to inform them to stop doing this.
+ *
+ * @param max the new max column size limit; zero means unlimited
+ * @exception SQLException if a database access error occurs
+ */
+ public void setMaxFieldSize(int max) throws SQLException
+ {
+ throw new PSQLException("postgresql.stat.maxfieldsize");
+ }
+
+ /**
+ * The maxRows limit is set to limit the number of rows that
+ * any ResultSet can contain. If the limit is exceeded, the
+ * excess rows are silently dropped.
+ *
+ * @return the current maximum row limit; zero means unlimited
+ * @exception SQLException if a database access error occurs
+ */
+ public int getMaxRows() throws SQLException
+ {
+ return connection.maxrows;
+ }
+
+ /**
+ * Set the maximum number of rows
+ *
+ * @param max the new max rows limit; zero means unlimited
+ * @exception SQLException if a database access error occurs
+ * @see getMaxRows
+ */
+ public void setMaxRows(int max) throws SQLException
+ {
+ connection.maxrows = max;
+ }
+
+ /**
+ * If escape scanning is on (the default), the driver will do escape
+ * substitution before sending the SQL to the database.
+ *
+ * @param enable true to enable; false to disable
+ * @exception SQLException if a database access error occurs
+ */
+ public void setEscapeProcessing(boolean enable) throws SQLException
+ {
+ escapeProcessing = enable;
+ }
+
+ /**
+ * The queryTimeout limit is the number of seconds the driver
+ * will wait for a Statement to execute. If the limit is
+ * exceeded, a SQLException is thrown.
+ *
+ * @return the current query timeout limit in seconds; 0 = unlimited
+ * @exception SQLException if a database access error occurs
+ */
+ public int getQueryTimeout() throws SQLException
+ {
+ return timeout;
+ }
+
+ /**
+ * Sets the queryTimeout limit
+ *
+ * @param seconds - the new query timeout limit in seconds
+ * @exception SQLException if a database access error occurs
+ */
+ public void setQueryTimeout(int seconds) throws SQLException
+ {
+ timeout = seconds;
+ }
+
+ /**
+ * Cancel can be used by one thread to cancel a statement that
+ * is being executed by another thread. However, PostgreSQL is
+ * a sync. sort of thing, so this really has no meaning - we
+ * define it as a no-op (i.e. you can't cancel, but there is no
+ * error if you try.)
+ *
+ * 6.4 introduced a cancel operation, but we have not implemented it
+ * yet. Sometime before 6.5, this method will be implemented.
+ *
+ * @exception SQLException only because thats the spec.
+ */
+ public void cancel() throws SQLException
+ {
+ // No-op
+ }
+
+ /**
+ * The first warning reported by calls on this Statement is
+ * returned. A Statement's execute methods clear its SQLWarning
+ * chain. Subsequent Statement warnings will be chained to this
+ * SQLWarning.
+ *
+ *
The Warning chain is automatically cleared each time a statement
+ * is (re)executed.
+ *
+ *
Note: If you are processing a ResultSet then any warnings
+ * associated with ResultSet reads will be chained on the ResultSet
+ * object.
+ *
+ * @return the first SQLWarning on null
+ * @exception SQLException if a database access error occurs
+ */
+ public SQLWarning getWarnings() throws SQLException
+ {
+ return warnings;
+ }
+
+ /**
+ * After this call, getWarnings returns null until a new warning
+ * is reported for this Statement.
+ *
+ * @exception SQLException if a database access error occurs (why?)
+ */
+ public void clearWarnings() throws SQLException
+ {
+ warnings = null;
+ }
+
+ /**
+ * setCursorName defines the SQL cursor name that will be used by
+ * subsequent execute methods. This name can then be used in SQL
+ * positioned update/delete statements to identify the current row
+ * in the ResultSet generated by this statement. If a database
+ * doesn't support positioned update/delete, this method is a
+ * no-op.
+ *
+ *
Note: By definition, positioned update/delete execution
+ * must be done by a different Statement than the one which
+ * generated the ResultSet being used for positioning. Also, cursor
+ * names must be unique within a Connection.
+ *
+ *
We throw an additional constriction. There can only be one
+ * cursor active at any one time.
+ *
+ * @param name the new cursor name
+ * @exception SQLException if a database access error occurs
+ */
+ public void setCursorName(String name) throws SQLException
+ {
+ connection.setCursorName(name);
+ }
+
+ /**
+ * Execute a SQL statement that may return multiple results. We
+ * don't have to worry about this since we do not support multiple
+ * ResultSets. You can use getResultSet or getUpdateCount to
+ * retrieve the result.
+ *
+ * @param sql any SQL statement
+ * @return true if the next result is a ResulSet, false if it is
+ * an update count or there are no more results
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean execute(String sql) throws SQLException
+ {
+ if(escapeProcessing)
+ sql=connection.EscapeSQL(sql);
+
+ result = connection.ExecSQL(sql);
+ return (result != null && ((org.postgresql.ResultSet)result).reallyResultSet());
+ }
+
+ /**
+ * getResultSet returns the current result as a ResultSet. It
+ * should only be called once per result.
+ *
+ * @return the current result set; null if there are no more
+ * @exception SQLException if a database access error occurs (why?)
+ */
+ public java.sql.ResultSet getResultSet() throws SQLException
+ {
+ return result;
+ }
+
+ /**
+ * getUpdateCount returns the current result as an update count,
+ * if the result is a ResultSet or there are no more results, -1
+ * is returned. It should only be called once per result.
+ *
+ * @return the current result as an update count.
+ * @exception SQLException if a database access error occurs
+ */
+ public int getUpdateCount() throws SQLException
+ {
+ if (result == null) return -1;
+ if (((org.postgresql.ResultSet)result).reallyResultSet()) return -1;
+ return ((org.postgresql.ResultSet)result).getResultCount();
+ }
+
+ /**
+ * getMoreResults moves to a Statement's next result. If it returns
+ * true, this result is a ResulSet.
+ *
+ * @return true if the next ResultSet is valid
+ * @exception SQLException if a database access error occurs
+ */
+ public boolean getMoreResults() throws SQLException
+ {
+ result = ((org.postgresql.ResultSet)result).getNext();
+ return (result != null && ((org.postgresql.ResultSet)result).reallyResultSet());
+ }
+
+ /**
+ * Returns the status message from the current Result.
+ * This is used internally by the driver.
+ *
+ * @return status message from backend
+ */
+ public String getResultStatusString()
+ {
+ if(result == null)
+ return null;
+ return ((org.postgresql.ResultSet)result).getStatusString();
+ }
+
+ // ** JDBC 2 Extensions **
+
+ public void addBatch(String sql) throws SQLException
+ {
+ if(batch==null)
+ batch=new Vector();
+ batch.addElement(sql);
+ }
+
+ public void clearBatch() throws SQLException
+ {
+ if(batch!=null)
+ batch.removeAllElements();
+ }
+
+ public int[] executeBatch() throws SQLException
+ {
+ if(batch==null || batch.isEmpty())
+ throw new PSQLException("postgresql.stat.batch.empty");
+
+ int size=batch.size();
+ int[] result=new int[size];
+ int i=0;
+ this.execute("begin"); // PTM: check this when autoCommit is false
+ try {
+ for(i=0;i
+ result[i]=this.executeUpdate((String)batch.elementAt(i));
+ this.execute("commit"); // PTM: check this
+ } catch(SQLException e) {
+ this.execute("abort"); // PTM: check this
+ throw new PSQLException("postgresql.stat.batch.error",new Integer(i),batch.elementAt(i));
+ }
+ return result;
+ }
+
+ public java.sql.Connection getConnection() throws SQLException
+ {
+ return (java.sql.Connection)connection;
+ }
+
+ public int getFetchDirection() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public int getFetchSize() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public int getKeysetSize() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public int getResultSetConcurrency() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public int getResultSetType() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setFetchDirection(int direction) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setFetchSize(int rows) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setKeysetSize(int keys) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setResultSetConcurrency(int value) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ public void setResultSetType(int value) throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+
+}
--- /dev/null
+package org.postgresql.largeobject;
+
+import java.io.*;
+import java.lang.*;
+import java.net.*;
+import java.util.*;
+import java.sql.*;
+
+import org.postgresql.fastpath.*;
+
+/**
+ * This class implements the large object interface to org.postgresql.
+ *
+ *
It provides the basic methods required to run the interface, plus
+ * a pair of methods that provide InputStream and OutputStream classes
+ * for this object.
+ *
+ *
Normally, client code would use the getAsciiStream, getBinaryStream,
+ * or getUnicodeStream methods in ResultSet, or setAsciiStream,
+ * setBinaryStream, or setUnicodeStream methods in PreparedStatement to
+ * access Large Objects.
+ *
+ *
However, sometimes lower level access to Large Objects are required,
+ * that are not supported by the JDBC specification.
+ *
+ *
Refer to org.postgresql.largeobject.LargeObjectManager on how to gain access
+ * to a Large Object, or how to create one.
+ *
+ * @see org.postgresql.largeobject.LargeObjectManager
+ * @see org.postgresql.ResultSet#getAsciiStream
+ * @see org.postgresql.ResultSet#getBinaryStream
+ * @see org.postgresql.ResultSet#getUnicodeStream
+ * @see org.postgresql.PreparedStatement#setAsciiStream
+ * @see org.postgresql.PreparedStatement#setBinaryStream
+ * @see org.postgresql.PreparedStatement#setUnicodeStream
+ * @see java.sql.ResultSet#getAsciiStream
+ * @see java.sql.ResultSet#getBinaryStream
+ * @see java.sql.ResultSet#getUnicodeStream
+ * @see java.sql.PreparedStatement#setAsciiStream
+ * @see java.sql.PreparedStatement#setBinaryStream
+ * @see java.sql.PreparedStatement#setUnicodeStream
+ *
+ */
+public class LargeObject
+{
+ /**
+ * Indicates a seek from the begining of a file
+ */
+ public static final int SEEK_SET = 0;
+
+ /**
+ * Indicates a seek from the current position
+ */
+ public static final int SEEK_CUR = 1;
+
+ /**
+ * Indicates a seek from the end of a file
+ */
+ public static final int SEEK_END = 2;
+
+ private Fastpath fp; // Fastpath API to use
+ private int oid; // OID of this object
+ private int fd; // the descriptor of the open large object
+
+ /**
+ * This opens a large object.
+ *
+ *
If the object does not exist, then an SQLException is thrown.
+ *
+ * @param fp FastPath API for the connection to use
+ * @param oid of the Large Object to open
+ * @param mode Mode of opening the large object
+ * (defined in LargeObjectManager)
+ * @exception SQLException if a database-access error occurs.
+ * @see org.postgresql.largeobject.LargeObjectManager
+ */
+ protected LargeObject(Fastpath fp,int oid,int mode) throws SQLException
+ {
+ this.fp = fp;
+ this.oid = oid;
+
+ FastpathArg args[] = new FastpathArg[2];
+ args[0] = new FastpathArg(oid);
+ args[1] = new FastpathArg(mode);
+ this.fd = fp.getInteger("lo_open",args);
+ }
+
+ /**
+ * @return the OID of this LargeObject
+ */
+ public int getOID()
+ {
+ return oid;
+ }
+
+ /**
+ * This method closes the object. You must not call methods in this
+ * object after this is called.
+ * @exception SQLException if a database-access error occurs.
+ */
+ public void close() throws SQLException
+ {
+ FastpathArg args[] = new FastpathArg[1];
+ args[0] = new FastpathArg(fd);
+ fp.fastpath("lo_close",false,args); // true here as we dont care!!
+ }
+
+ /**
+ * Reads some data from the object, and return as a byte[] array
+ *
+ * @param len number of bytes to read
+ * @return byte[] array containing data read
+ * @exception SQLException if a database-access error occurs.
+ */
+ public byte[] read(int len) throws SQLException
+ {
+ // This is the original method, where the entire block (len bytes)
+ // is retrieved in one go.
+ FastpathArg args[] = new FastpathArg[2];
+ args[0] = new FastpathArg(fd);
+ args[1] = new FastpathArg(len);
+ return fp.getData("loread",args);
+
+ // This version allows us to break this down into 4k blocks
+ //if(len<=4048) {
+ //// handle as before, return the whole block in one go
+ //FastpathArg args[] = new FastpathArg[2];
+ //args[0] = new FastpathArg(fd);
+ //args[1] = new FastpathArg(len);
+ //return fp.getData("loread",args);
+ //} else {
+ //// return in 4k blocks
+ //byte[] buf=new byte[len];
+ //int off=0;
+ //while(len>0) {
+ //int bs=4048;
+ //len-=bs;
+ //if(len<0) {
+ //bs+=len;
+ //len=0;
+ //}
+ //read(buf,off,bs);
+ //off+=bs;
+ //}
+ //return buf;
+ //}
+ }
+
+ /**
+ * Reads some data from the object into an existing array
+ *
+ * @param buf destination array
+ * @param off offset within array
+ * @param len number of bytes to read
+ * @exception SQLException if a database-access error occurs.
+ */
+ public void read(byte buf[],int off,int len) throws SQLException
+ {
+ System.arraycopy(read(len),0,buf,off,len);
+ }
+
+ /**
+ * Writes an array to the object
+ *
+ * @param buf array to write
+ * @exception SQLException if a database-access error occurs.
+ */
+ public void write(byte buf[]) throws SQLException
+ {
+ FastpathArg args[] = new FastpathArg[2];
+ args[0] = new FastpathArg(fd);
+ args[1] = new FastpathArg(buf);
+ fp.fastpath("lowrite",false,args);
+ }
+
+ /**
+ * Writes some data from an array to the object
+ *
+ * @param buf destination array
+ * @param off offset within array
+ * @param len number of bytes to write
+ * @exception SQLException if a database-access error occurs.
+ */
+ public void write(byte buf[],int off,int len) throws SQLException
+ {
+ byte data[] = new byte[len];
+ System.arraycopy(buf,off,data,0,len);
+ write(data);
+ }
+
+ /**
+ * Sets the current position within the object.
+ *
+ *
This is similar to the fseek() call in the standard C library. It
+ * allows you to have random access to the large object.
+ *
+ * @param pos position within object
+ * @param ref Either SEEK_SET, SEEK_CUR or SEEK_END
+ * @exception SQLException if a database-access error occurs.
+ */
+ public void seek(int pos,int ref) throws SQLException
+ {
+ FastpathArg args[] = new FastpathArg[3];
+ args[0] = new FastpathArg(fd);
+ args[1] = new FastpathArg(pos);
+ args[2] = new FastpathArg(ref);
+ fp.fastpath("lo_lseek",false,args);
+ }
+
+ /**
+ * Sets the current position within the object.
+ *
+ *
This is similar to the fseek() call in the standard C library. It
+ * allows you to have random access to the large object.
+ *
+ * @param pos position within object from begining
+ * @exception SQLException if a database-access error occurs.
+ */
+ public void seek(int pos) throws SQLException
+ {
+ seek(pos,SEEK_SET);
+ }
+
+ /**
+ * @return the current position within the object
+ * @exception SQLException if a database-access error occurs.
+ */
+ public int tell() throws SQLException
+ {
+ FastpathArg args[] = new FastpathArg[1];
+ args[0] = new FastpathArg(fd);
+ return fp.getInteger("lo_tell",args);
+ }
+
+ /**
+ * This method is inefficient, as the only way to find out the size of
+ * the object is to seek to the end, record the current position, then
+ * return to the original position.
+ *
+ *
A better method will be found in the future.
+ *
+ * @return the size of the large object
+ * @exception SQLException if a database-access error occurs.
+ */
+ public int size() throws SQLException
+ {
+ int cp = tell();
+ seek(0,SEEK_END);
+ int sz = tell();
+ seek(cp,SEEK_SET);
+ return sz;
+ }
+
+ /**
+ * Returns an InputStream from this object.
+ *
+ *
This InputStream can then be used in any method that requires an
+ * InputStream.
+ *
+ * @exception SQLException if a database-access error occurs.
+ */
+ public InputStream getInputStream() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ /**
+ * Returns an OutputStream to this object
+ *
+ *
This OutputStream can then be used in any method that requires an
+ * OutputStream.
+ *
+ * @exception SQLException if a database-access error occurs.
+ */
+ public OutputStream getOutputStream() throws SQLException
+ {
+ throw org.postgresql.Driver.notImplemented();
+ }
+}
--- /dev/null
+package org.postgresql.largeobject;
+
+import java.io.*;
+import java.lang.*;
+import java.net.*;
+import java.util.*;
+import java.sql.*;
+
+import org.postgresql.fastpath.*;
+import org.postgresql.util.*;
+
+/**
+ * This class implements the large object interface to org.postgresql.
+ *
+ *
It provides methods that allow client code to create, open and delete
+ * large objects from the database. When opening an object, an instance of
+ * org.postgresql.largeobject.LargeObject is returned, and its methods then allow
+ * access to the object.
+ *
+ *
This class can only be created by org.postgresql.Connection
+ *
+ *
To get access to this class, use the following segment of code:
+ * import org.postgresql.largeobject.*;
+ *
+ * Connection conn;
+ * LargeObjectManager lobj;
+ *
+ * ... code that opens a connection ...
+ *
+ * lobj = ((org.postgresql.Connection)myconn).getLargeObjectAPI();
+ *
+ *
+ *
Normally, client code would use the getAsciiStream, getBinaryStream,
+ * or getUnicodeStream methods in ResultSet, or setAsciiStream,
+ * setBinaryStream, or setUnicodeStream methods in PreparedStatement to
+ * access Large Objects.
+ *
+ *
However, sometimes lower level access to Large Objects are required,
+ * that are not supported by the JDBC specification.
+ *
+ *
Refer to org.postgresql.largeobject.LargeObject on how to manipulate the
+ * contents of a Large Object.
+ *
+ * @see org.postgresql.largeobject.LargeObject
+ * @see org.postgresql.ResultSet#getAsciiStream
+ * @see org.postgresql.ResultSet#getBinaryStream
+ * @see org.postgresql.ResultSet#getUnicodeStream
+ * @see org.postgresql.PreparedStatement#setAsciiStream
+ * @see org.postgresql.PreparedStatement#setBinaryStream
+ * @see org.postgresql.PreparedStatement#setUnicodeStream
+ * @see java.sql.ResultSet#getAsciiStream
+ * @see java.sql.ResultSet#getBinaryStream
+ * @see java.sql.ResultSet#getUnicodeStream
+ * @see java.sql.PreparedStatement#setAsciiStream
+ * @see java.sql.PreparedStatement#setBinaryStream
+ * @see java.sql.PreparedStatement#setUnicodeStream
+ */
+public class LargeObjectManager
+{
+ // the fastpath api for this connection
+ private Fastpath fp;
+
+ /**
+ * This mode indicates we want to write to an object
+ */
+ public static final int WRITE = 0x00020000;
+
+ /**
+ * This mode indicates we want to read an object
+ */
+ public static final int READ = 0x00040000;
+
+ /**
+ * This mode is the default. It indicates we want read and write access to
+ * a large object
+ */
+ public static final int READWRITE = READ | WRITE;
+
+ /**
+ * This prevents us being created by mere mortals
+ */
+ private LargeObjectManager()
+ {
+ }
+
+ /**
+ * Constructs the LargeObject API.
+ *
+ *
This method should only be called by org.postgresql.Connection
+ *
+ *
There should only be one LargeObjectManager per Connection. The
+ * org.postgresql.Connection class keeps track of the various extension API's
+ * and it's advised you use those to gain access, and not going direct.
+ */
+ public LargeObjectManager(org.postgresql.Connection conn) throws SQLException
+ {
+ // We need Fastpath to do anything
+ this.fp = conn.getFastpathAPI();
+
+ // Now get the function oid's for the api
+ //
+ // This is an example of Fastpath.addFunctions();
+ //
+ java.sql.ResultSet res = (java.sql.ResultSet)conn.createStatement().executeQuery("select proname, oid from pg_proc" +
+ " where proname = 'lo_open'" +
+ " or proname = 'lo_close'" +
+ " or proname = 'lo_creat'" +
+ " or proname = 'lo_unlink'" +
+ " or proname = 'lo_lseek'" +
+ " or proname = 'lo_tell'" +
+ " or proname = 'loread'" +
+ " or proname = 'lowrite'");
+
+ if(res==null)
+ throw new PSQLException("postgresql.lo.init");
+
+ fp.addFunctions(res);
+ res.close();
+ DriverManager.println("Large Object initialised");
+ }
+
+ /**
+ * This opens an existing large object, based on its OID. This method
+ * assumes that READ and WRITE access is required (the default).
+ *
+ * @param oid of large object
+ * @return LargeObject instance providing access to the object
+ * @exception SQLException on error
+ */
+ public LargeObject open(int oid) throws SQLException
+ {
+ return new LargeObject(fp,oid,READWRITE);
+ }
+
+ /**
+ * This opens an existing large object, based on its OID
+ *
+ * @param oid of large object
+ * @param mode mode of open
+ * @return LargeObject instance providing access to the object
+ * @exception SQLException on error
+ */
+ public LargeObject open(int oid,int mode) throws SQLException
+ {
+ return new LargeObject(fp,oid,mode);
+ }
+
+ /**
+ * This creates a large object, returning its OID.
+ *
+ *
It defaults to READWRITE for the new object's attributes.
+ *
+ * @return oid of new object
+ * @exception SQLException on error
+ */
+ public int create() throws SQLException
+ {
+ FastpathArg args[] = new FastpathArg[1];
+ args[0] = new FastpathArg(READWRITE);
+ return fp.getInteger("lo_creat",args);
+ }
+
+ /**
+ * This creates a large object, returning its OID
+ *
+ * @param mode a bitmask describing different attributes of the new object
+ * @return oid of new object
+ * @exception SQLException on error
+ */
+ public int create(int mode) throws SQLException
+ {
+ FastpathArg args[] = new FastpathArg[1];
+ args[0] = new FastpathArg(mode);
+ return fp.getInteger("lo_creat",args);
+ }
+
+ /**
+ * This deletes a large object.
+ *
+ * @param oid describing object to delete
+ * @exception SQLException on error
+ */
+ public void delete(int oid) throws SQLException
+ {
+ FastpathArg args[] = new FastpathArg[1];
+ args[0] = new FastpathArg(oid);
+ fp.fastpath("lo_unlink",false,args);
+ }
+
+ /**
+ * This deletes a large object.
+ *
+ *
It is identical to the delete method, and is supplied as the C API uses
+ * unlink.
+ *
+ * @param oid describing object to delete
+ * @exception SQLException on error
+ */
+ public void unlink(int oid) throws SQLException
+ {
+ delete(oid);
+ }
+
+}
--- /dev/null
+package org.postgresql.largeobject;
+
+// IMPORTANT NOTE: This file implements the JDBC 2 version of the driver.
+// If you make any modifications to this file, you must make sure that the
+// changes are also made (if relevent) to the related JDBC 1 class in the
+// org.postgresql.jdbc1 package.
+
+
+import java.lang.*;
+import java.io.*;
+import java.math.*;
+import java.text.*;
+import java.util.*;
+import java.sql.*;
+import org.postgresql.Field;
+import org.postgresql.largeobject.*;
+import org.postgresql.largeobject.*;
+
+/**
+ * This implements the Blob interface, which is basically another way to
+ * access a LargeObject.
+ *
+ * $Id: PGblob.java,v 1.1 2000/04/17 20:07:52 peter Exp $
+ *
+ */
+public class PGblob implements java.sql.Blob
+{
+ private org.postgresql.Connection conn;
+ private int oid;
+ private LargeObject lo;
+
+ public PGblob(org.postgresql.Connection conn,int oid) throws SQLException {
+ this.conn=conn;
+ this.oid=oid;
+ LargeObjectManager lom = conn.getLargeObjectAPI();
+ this.lo = lom.open(oid);
+ }
+
+ public long length() throws SQLException {
+ return lo.size();
+ }
+
+ public InputStream getBinaryStream() throws SQLException {
+ return lo.getInputStream();
+ }
+
+ public byte[] getBytes(long pos,int length) throws SQLException {
+ lo.seek((int)pos,LargeObject.SEEK_SET);
+ return lo.read(length);
+ }
+
+ /*
+ * For now, this is not implemented.
+ */
+ public long position(byte[] pattern,long start) throws SQLException {
+ throw org.postgresql.Driver.notImplemented();
+ }
+
+ /*
+ * This should be simply passing the byte value of the pattern Blob
+ */
+ public long position(Blob pattern,long start) throws SQLException {
+ return position(pattern.getBytes(0,(int)pattern.length()),start);
+ }
+
+}
--- /dev/null
+package org.postgresql.util;
+
+import java.io.*;
+import java.sql.*;
+
+/**
+ * This implements a class that handles the PostgreSQL money and cash types
+ */
+public class PGmoney extends PGobject implements Serializable,Cloneable
+{
+ /**
+ * The value of the field
+ */
+ public double val;
+
+ /**
+ * @param value of field
+ */
+ public PGmoney(double value) {
+ this();
+ val = value;
+ }
+
+ /**
+ * This is called mainly from the other geometric types, when a
+ * point is imbeded within their definition.
+ *
+ * @param value Definition of this point in PostgreSQL's syntax
+ */
+ public PGmoney(String value) throws SQLException
+ {
+ this();
+ setValue(value);
+ }
+
+ /**
+ * Required by the driver
+ */
+ public PGmoney()
+ {
+ setType("money");
+ }
+
+ /**
+ * @param s Definition of this point in PostgreSQL's syntax
+ * @exception SQLException on conversion failure
+ */
+ public void setValue(String s) throws SQLException
+ {
+ try {
+ String s1;
+ boolean negative;
+
+ negative = (s.charAt(0) == '-') ;
+
+ s1 = s.substring(negative ? 2 : 1);
+
+ int pos = s1.indexOf(',');
+ while (pos != -1) {
+ s1 = s1.substring(0,pos) + s1.substring(pos +1);
+ pos = s1.indexOf(',');
+ }
+
+ val = Double.valueOf(s1).doubleValue();
+ val = negative ? -val : val;
+
+ } catch(NumberFormatException e) {
+ throw new PSQLException("postgresql.money",e);
+ }
+ }
+
+ /**
+ * @param obj Object to compare with
+ * @return true if the two boxes are identical
+ */
+ public boolean equals(Object obj)
+ {
+ if(obj instanceof PGmoney) {
+ PGmoney p = (PGmoney)obj;
+ return val == p.val;
+ }
+ return false;
+ }
+
+ /**
+ * This must be overidden to allow the object to be cloned
+ */
+ public Object clone()
+ {
+ return new PGmoney(val);
+ }
+
+ /**
+ * @return the PGpoint in the syntax expected by org.postgresql
+ */
+ public String getValue()
+ {
+ if (val < 0) {
+ return "-$" + (-val);
+ }
+ else {
+ return "$"+val;
+ }
+ }
+}
--- /dev/null
+package org.postgresql.util;
+
+import java.io.*;
+import java.lang.*;
+import java.sql.*;
+import java.util.*;
+
+/**
+ * org.postgresql.PG_Object is a class used to describe unknown types
+ * An unknown type is any type that is unknown by JDBC Standards
+ *
+ *
As of PostgreSQL 6.3, this allows user code to add their own
+ * handlers via a call to org.postgresql.Connection. These handlers
+ * must extend this class.
+ */
+public class PGobject implements Serializable,Cloneable
+{
+ protected String type;
+ protected String value;
+
+ /**
+ * This is called by org.postgresql.Connection.getObject() to create the
+ * object.
+ */
+ public PGobject()
+ {
+ }
+
+ /**
+ * This method sets the type of this object.
+ *
+ *
It should not be extended by subclasses, hence its final
+ *
+ * @param type a string describing the type of the object
+ */
+ public final void setType(String type)
+ {
+ this.type = type;
+ }
+
+ /**
+ * This method sets the value of this object. It must be overidden.
+ *
+ * @param value a string representation of the value of the object
+ * @exception SQLException thrown if value is invalid for this type
+ */
+ public void setValue(String value) throws SQLException
+ {
+ this.value = value;
+ }
+
+ /**
+ * As this cannot change during the life of the object, it's final.
+ * @return the type name of this object
+ */
+ public final String getType()
+ {
+ return type;
+ }
+
+ /**
+ * This must be overidden, to return the value of the object, in the
+ * form required by org.postgresql.
+ * @return the value of this object
+ */
+ public String getValue()
+ {
+ return value;
+ }
+
+ /**
+ * This must be overidden to allow comparisons of objects
+ * @param obj Object to compare with
+ * @return true if the two boxes are identical
+ */
+ public boolean equals(Object obj)
+ {
+ if(obj instanceof PGobject)
+ return ((PGobject)obj).getValue().equals(getValue());
+ return false;
+ }
+
+ /**
+ * This must be overidden to allow the object to be cloned
+ */
+ public Object clone()
+ {
+ PGobject obj = new PGobject();
+ obj.type=type;
+ obj.value=value;
+ return obj;
+ }
+
+ /**
+ * This is defined here, so user code need not overide it.
+ * @return the value of this object, in the syntax expected by org.postgresql
+ */
+ public String toString()
+ {
+ return getValue();
+ }
+}
--- /dev/null
+package org.postgresql.util;
+
+import java.sql.*;
+import java.util.*;
+
+/**
+ * This class is used to tokenize the text output of org.postgres.
+ *
+ *
It's mainly used by the geometric classes, but is useful in parsing any
+ * output from custom data types output from org.postgresql.
+ *
+ * @see org.postgresql.geometric.PGbox
+ * @see org.postgresql.geometric.PGcircle
+ * @see org.postgresql.geometric.PGlseg
+ * @see org.postgresql.geometric.PGpath
+ * @see org.postgresql.geometric.PGpoint
+ * @see org.postgresql.geometric.PGpolygon
+ */
+public class PGtokenizer
+{
+ // Our tokens
+ protected Vector tokens;
+
+ /**
+ * Create a tokeniser.
+ *
+ *
We could have used StringTokenizer to do this, however, we needed to
+ * handle nesting of '(' ')' '[' ']' '<' and '>' as these are used
+ * by the geometric data types.
+ *
+ * @param string containing tokens
+ * @param delim single character to split the tokens
+ */
+ public PGtokenizer(String string,char delim)
+ {
+ tokenize(string,delim);
+ }
+
+ /**
+ * This resets this tokenizer with a new string and/or delimiter.
+ *
+ * @param string containing tokens
+ * @param delim single character to split the tokens
+ */
+ public int tokenize(String string,char delim)
+ {
+ tokens = new Vector();
+
+ // nest holds how many levels we are in the current token.
+ // if this is > 0 then we don't split a token when delim is matched.
+ //
+ // The Geometric datatypes use this, because often a type may have others
+ // (usualls PGpoint) imbedded within a token.
+ //
+ // Peter 1998 Jan 6 - Added < and > to the nesting rules
+ int nest=0,p,s;
+
+ for(p=0,s=0;p
+ char c = string.charAt(p);
+
+ // increase nesting if an open character is found
+ if(c == '(' || c == '[' || c == '<')
+ nest++;
+
+ // decrease nesting if a close character is found
+ if(c == ')' || c == ']' || c == '>')
+ nest--;
+
+ if(nest==0 && c==delim) {
+ tokens.addElement(string.substring(s,p));
+ s=p+1; // +1 to skip the delimiter
+ }
+
+ }
+
+ // Don't forget the last token ;-)
+ if(s
+ tokens.addElement(string.substring(s));
+
+ return tokens.size();
+ }
+
+ /**
+ * @return the number of tokens available
+ */
+ public int getSize()
+ {
+ return tokens.size();
+ }
+
+ /**
+ * @param n Token number ( 0 ... getSize()-1 )
+ * @return The token value
+ */
+ public String getToken(int n)
+ {
+ return (String)tokens.elementAt(n);
+ }
+
+ /**
+ * This returns a new tokenizer based on one of our tokens.
+ *
+ * The geometric datatypes use this to process nested tokens (usually
+ * PGpoint).
+ *
+ * @param n Token number ( 0 ... getSize()-1 )
+ * @param delim The delimiter to use
+ * @return A new instance of PGtokenizer based on the token
+ */
+ public PGtokenizer tokenizeToken(int n,char delim)
+ {
+ return new PGtokenizer(getToken(n),delim);
+ }
+
+ /**
+ * This removes the lead/trailing strings from a string
+ * @param s Source string
+ * @param l Leading string to remove
+ * @param t Trailing string to remove
+ * @return String without the lead/trailing strings
+ */
+ public static String remove(String s,String l,String t)
+ {
+ if(s.startsWith(l)) s = s.substring(l.length());
+ if(s.endsWith(t)) s = s.substring(0,s.length()-t.length());
+ return s;
+ }
+
+ /**
+ * This removes the lead/trailing strings from all tokens
+ * @param l Leading string to remove
+ * @param t Trailing string to remove
+ */
+ public void remove(String l,String t)
+ {
+ for(int i=0;i
+ tokens.setElementAt(remove((String)tokens.elementAt(i),l,t),i);
+ }
+ }
+
+ /**
+ * Removes ( and ) from the beginning and end of a string
+ * @param s String to remove from
+ * @return String without the ( or )
+ */
+ public static String removePara(String s)
+ {
+ return remove(s,"(",")");
+ }
+
+ /**
+ * Removes ( and ) from the beginning and end of all tokens
+ * @return String without the ( or )
+ */
+ public void removePara()
+ {
+ remove("(",")");
+ }
+
+ /**
+ * Removes [ and ] from the beginning and end of a string
+ * @param s String to remove from
+ * @return String without the [ or ]
+ */
+ public static String removeBox(String s)
+ {
+ return remove(s,"[","]");
+ }
+
+ /**
+ * Removes [ and ] from the beginning and end of all tokens
+ * @return String without the [ or ]
+ */
+ public void removeBox()
+ {
+ remove("[","]");
+ }
+
+ /**
+ * Removes < and > from the beginning and end of a string
+ * @param s String to remove from
+ * @return String without the < or >
+ */
+ public static String removeAngle(String s)
+ {
+ return remove(s,"<",">");
+ }
+
+ /**
+ * Removes < and > from the beginning and end of all tokens
+ * @return String without the < or >
+ */
+ public void removeAngle()
+ {
+ remove("<",">");
+ }
+}
--- /dev/null
+package org.postgresql.util;
+
+import java.sql.*;
+import java.text.*;
+import java.util.*;
+
+/**
+ * This class extends SQLException, and provides our internationalisation handling
+ */
+public class PSQLException extends SQLException
+{
+ private String message;
+
+ // Cache for future errors
+ static ResourceBundle bundle;
+
+ /**
+ * This provides the same functionality to SQLException
+ * @param error Error string
+ */
+ public PSQLException(String error) {
+ super();
+ translate(error,null);
+ }
+
+ /**
+ * A more generic entry point.
+ * @param error Error string or standard message id
+ * @param args Array of arguments
+ */
+ public PSQLException(String error,Object[] args)
+ {
+ //super();
+ translate(error,args);
+ }
+
+ /**
+ * Helper version for 1 arg
+ */
+ public PSQLException(String error,Object arg)
+ {
+ super();
+ Object[] argv = new Object[1];
+ argv[0] = arg;
+ translate(error,argv);
+ }
+
+ /**
+ * Helper version for 2 args
+ */
+ public PSQLException(String error,Object arg1,Object arg2)
+ {
+ super();
+ Object[] argv = new Object[2];
+ argv[0] = arg1;
+ argv[1] = arg2;
+ translate(error,argv);
+ }
+
+ /**
+ * This does the actual translation
+ */
+ private void translate(String id,Object[] args)
+ {
+ if(bundle == null) {
+ try {
+ bundle = ResourceBundle.getBundle("org.postgresql.errors");
+ } catch(MissingResourceException e) {
+ }
+ }
+
+ // Now look up a localized message. If one is not found, then use
+ // the supplied message instead.
+ message = null;
+ try {
+ message = bundle.getString(id);
+ } catch(MissingResourceException e) {
+ message = id;
+ }
+
+ // Expand any arguments
+ if(args!=null)
+ message = MessageFormat.format(message,args);
+
+ }
+
+ /**
+ * Overides Throwable
+ */
+ public String getLocalizedMessage()
+ {
+ return message;
+ }
+
+ /**
+ * Overides Throwable
+ */
+ public String getMessage()
+ {
+ return message;
+ }
+
+ /**
+ * Overides Object
+ */
+ public String toString()
+ {
+ return message;
+ }
+
+}
--- /dev/null
+package org.postgresql.util;
+
+import java.io.*;
+import java.lang.*;
+import java.lang.reflect.*;
+import java.net.*;
+import java.util.*;
+import java.sql.*;
+
+/**
+ * This class uses PostgreSQL's object oriented features to store Java Objects.
+ *
+ * It does this by mapping a Java Class name to a table in the database. Each
+ * entry in this new table then represents a Serialized instance of this
+ * class. As each entry has an OID (Object IDentifier), this OID can be
+ * included in another table.
+ *
+ * This is too complex to show here, and will be documented in the main
+ * documents in more detail.
+ *
+ */
+public class Serialize
+{
+ // This is the connection that the instance refers to
+ protected org.postgresql.Connection conn;
+
+ // This is the table name
+ protected String tableName;
+
+ // This is the class name
+ protected String className;
+
+ // This is the Class for this serialzed object
+ protected Class ourClass;
+
+ /**
+ * This creates an instance that can be used to serialize or deserialize
+ * a Java object from a PostgreSQL table.
+ */
+ public Serialize(org.postgresql.Connection c,String type) throws SQLException
+ {
+ try {
+ conn = c;
+ tableName = type.toLowerCase();
+ className = toClassName(type);
+ ourClass = Class.forName(className);
+ } catch(ClassNotFoundException cnfe) {
+ throw new PSQLException("postgresql.serial.noclass",type);
+ }
+
+ // Second check, the type must be a table
+ boolean status = false;
+ ResultSet rs = conn.ExecSQL("select typname from pg_type,pg_class where typname=relname and typname='"+type+"'");
+ if(rs!=null) {
+ if(rs.next())
+ status=true;
+ rs.close();
+ }
+ // This should never occur, as org.postgresql has it's own internal checks
+ if(!status)
+ throw new PSQLException("postgresql.serial.table",type);
+
+ // Finally cache the fields within the table
+ }
+
+ /**
+ * This fetches an object from a table, given it's OID
+ * @param oid The oid of the object
+ * @return Object relating to oid
+ * @exception SQLException on error
+ */
+ public Object fetch(int oid) throws SQLException
+ {
+ try {
+ Object obj = ourClass.newInstance();
+
+ // NB: we use java.lang.reflect here to prevent confusion with
+ // the org.postgresql.Field
+ java.lang.reflect.Field f[] = ourClass.getDeclaredFields();
+ boolean hasOID=false;
+ int oidFIELD=-1;
+ StringBuffer sb = new StringBuffer("select");
+ char sep=' ';
+ for(int i=0;i
+ String n = f[i].getName();
+ if(n.equals("oid")) {
+ hasOID=true;
+ oidFIELD=i;
+ }
+ sb.append(sep);
+ sb.append(n);
+ sep=',';
+ }
+ sb.append(" from ");
+ sb.append(tableName);
+ sb.append(" where oid=");
+ sb.append(oid);
+
+ DriverManager.println("store: "+sb.toString());
+ ResultSet rs = conn.ExecSQL(sb.toString());
+ if(rs!=null) {
+ if(rs.next()) {
+ for(int i=0;i
+ f[i].set(obj,rs.getObject(i+1));
+ }
+ }
+ rs.close();
+ } else
+ throw new PSQLException("postgresql.unexpected");
+ return obj;
+ } catch(IllegalAccessException iae) {
+ throw new SQLException(iae.toString());
+ } catch(InstantiationException ie) {
+ throw new SQLException(ie.toString());
+ }
+ }
+
+ /**
+ * This stores an object into a table, returning it's OID.
+ *
+ * If the object has an int called OID, and it is > 0, then
+ * that value is used for the OID, and the table will be updated.
+ * If the value of OID is 0, then a new row will be created, and the
+ * value of OID will be set in the object. This enables an object's
+ * value in the database to be updateable.
+ *
+ * If the object has no int called OID, then the object is stored. However
+ * if the object is later retrieved, amended and stored again, it's new
+ * state will be appended to the table, and will not overwrite the old
+ * entries.
+ *
+ * @param o Object to store (must implement Serializable)
+ * @return oid of stored object
+ * @exception SQLException on error
+ */
+ public int store(Object o) throws SQLException
+ {
+ try {
+ // NB: we use java.lang.reflect here to prevent confusion with
+ // the org.postgresql.Field
+ java.lang.reflect.Field f[] = ourClass.getDeclaredFields();
+ boolean hasOID=false;
+ int oidFIELD=-1;
+ boolean update=false;
+
+ // Find out if we have an oid value
+ for(int i=0;i
+ String n = f[i].getName();
+ if(n.equals("oid")) {
+ hasOID=true;
+ oidFIELD=i;
+
+ // We are an update if oid != 0
+ update = f[i].getInt(o)>0;
+ }
+ }
+
+ StringBuffer sb = new StringBuffer(update?"update "+tableName+" set":"insert into "+tableName+" values ");
+ char sep=update?' ':'(';
+ for(int i=0;i
+ String n = f[i].getName();
+ sb.append(sep);
+ sb.append(n);
+ sep=',';
+ if(update) {
+ sb.append('=');
+ if(f[i].getType().getName().equals("java.lang.String")) {
+ sb.append('\'');
+ sb.append(f[i].get(o).toString());
+ sb.append('\'');
+ } else
+ sb.append(f[i].get(o).toString());
+ }
+ }
+
+ if(!update) {
+ sb.append(") values ");
+ sep='(';
+ for(int i=0;i
+ String n = f[i].getName();
+ if(f[i].getType().getName().equals("java.lang.String")) {
+ sb.append('\'');
+ sb.append(f[i].get(o).toString());
+ sb.append('\'');
+ } else
+ sb.append(f[i].get(o).toString());
+ }
+ sb.append(')');
+ }
+
+ DriverManager.println("store: "+sb.toString());
+ ResultSet rs = conn.ExecSQL(sb.toString());
+ if(rs!=null) {
+ rs.close();
+ }
+
+ // fetch the OID for returning
+ int oid=0;
+ if(hasOID) {
+ // set the oid in the object
+ f[oidFIELD].setInt(o,oid);
+ }
+ return oid;
+
+ } catch(IllegalAccessException iae) {
+ throw new SQLException(iae.toString());
+ }
+ }
+
+ /**
+ * This method is not used by the driver, but it creates a table, given
+ * a Serializable Java Object. It should be used before serializing any
+ * objects.
+ * @param c Connection to database
+ * @param o Object to base table on
+ * @exception SQLException on error
+ */
+ public static void create(org.postgresql.Connection con,Object o) throws SQLException
+ {
+ create(con,o.getClass());
+ }
+
+ /**
+ * This method is not used by the driver, but it creates a table, given
+ * a Serializable Java Object. It should be used before serializing any
+ * objects.
+ * @param c Connection to database
+ * @param o Class to base table on
+ * @exception SQLException on error
+ */
+ public static void create(org.postgresql.Connection con,Class c) throws SQLException
+ {
+ if(c.isInterface())
+ throw new PSQLException("postgresql.serial.interface");
+
+ // See if the table exists
+ String tableName = toPostgreSQL(c.getName());
+
+ ResultSet rs = con.ExecSQL("select relname from pg_class where relname = '"+tableName+"'");
+ if(!rs.next()) {
+ DriverManager.println("found "+rs.getString(1));
+ // No entries returned, so the table doesn't exist
+
+ StringBuffer sb = new StringBuffer("create table ");
+ sb.append(tableName);
+ char sep='(';
+
+ java.lang.reflect.Field[] fields = c.getDeclaredFields();
+ for(int i=0;i
+ Class type = fields[i].getType();
+
+ // oid is a special field
+ if(!fields[i].getName().equals("oid")) {
+ sb.append(sep);
+ sb.append(fields[i].getName());
+ sb.append(' ');
+ sep=',';
+
+ if(type.isArray()) {
+ // array handling
+ } else {
+ // convert the java type to org.postgresql, recursing if a class
+ // is found
+ String n = fields[i].getType().getName();
+ int j=0;
+ for(;j
+ if(j
+ sb.append(tp[j][1]);
+ else {
+ create(con,fields[i].getType());
+ sb.append(toPostgreSQL(n));
+ }
+ }
+ }
+ }
+ sb.append(")");
+
+ // Now create the table
+ DriverManager.println("Serialize.create:"+sb);
+ con.ExecSQL(sb.toString());
+ rs.close();
+ } else {
+ DriverManager.println("Serialize.create: table "+tableName+" exists, skipping");
+ }
+ }
+
+ // This is used to translate between Java primitives and PostgreSQL types.
+ private static final String tp[][] = {
+ {"boolean", "int1"},
+ {"double", "float8"},
+ {"float", "float4"},
+ {"int", "int4"},
+ {"long", "int4"},
+ {"short", "int2"},
+ {"java.lang.String", "text"},
+ {"java.lang.Integer", "int4"},
+ {"java.lang.Float", "float4"},
+ {"java.lang.Double", "float8"},
+ {"java.lang.Short", "int2"}
+ };
+
+ /**
+ * This converts a Java Class name to a org.postgresql table, by replacing . with
+ *
+ * Because of this, a Class name may not have _ in the name.
+ * Another limitation, is that the entire class name (including packages)
+ * cannot be longer than 32 characters (a limit forced by PostgreSQL).
+ *
+ * @param name Class name
+ * @return PostgreSQL table name
+ * @exception SQLException on error
+ */
+ public static String toPostgreSQL(String name) throws SQLException
+ {
+ name = name.toLowerCase();
+
+ if(name.indexOf("_")>-1)
+ throw new PSQLException("postgresql.serial.underscore");
+
+ if(name.length()>32)
+ throw new PSQLException("postgresql.serial.namelength",name,new Integer(name.length()));
+
+ return name.replace('.','_');
+ }
+
+
+ /**
+ * This converts a org.postgresql table to a Java Class name, by replacing _ with
+ *
+ * @param name PostgreSQL table name
+ * @return Class name
+ * @exception SQLException on error
+ */
+ public static String toClassName(String name) throws SQLException
+ {
+ name = name.toLowerCase();
+ return name.replace('_','.');
+ }
+
+}
--- /dev/null
+package org.postgresql.util;
+
+/**
+ * This class provides us with the ability to encrypt passwords when sent
+ * over the network stream
+ *
+ *
Contains static methods to encrypt and compare
+ * passwords with Unix encrypted passwords.
+ *
+ * John Dumas's Java Crypt page for the original source.
+ *
+ */
+public class UnixCrypt extends Object
+{
+ //
+ // Null constructor - can't instantiate class
+ private UnixCrypt()
+ {
+ }
+
+ private static final char[] saltChars =
+ ("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789./".toCharArray());
+
+ private static final int ITERATIONS = 16;
+
+ private static final int con_salt[] =
+ {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
+ 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
+ 0x0A, 0x0B, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A,
+ 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12,
+ 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A,
+ 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22,
+ 0x23, 0x24, 0x25, 0x20, 0x21, 0x22, 0x23, 0x24,
+ 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C,
+ 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34,
+ 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C,
+ 0x3D, 0x3E, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x00,
+ };
+
+ private static final boolean shifts2[] =
+ {
+ false, false, true, true, true, true, true, true,
+ false, true, true, true, true, true, true, false
+ };
+
+ private static final int skb[][] =
+ {
+ {
+ /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
+ 0x00000000, 0x00000010, 0x20000000, 0x20000010,
+ 0x00010000, 0x00010010, 0x20010000, 0x20010010,
+ 0x00000800, 0x00000810, 0x20000800, 0x20000810,
+ 0x00010800, 0x00010810, 0x20010800, 0x20010810,
+ 0x00000020, 0x00000030, 0x20000020, 0x20000030,
+ 0x00010020, 0x00010030, 0x20010020, 0x20010030,
+ 0x00000820, 0x00000830, 0x20000820, 0x20000830,
+ 0x00010820, 0x00010830, 0x20010820, 0x20010830,
+ 0x00080000, 0x00080010, 0x20080000, 0x20080010,
+ 0x00090000, 0x00090010, 0x20090000, 0x20090010,
+ 0x00080800, 0x00080810, 0x20080800, 0x20080810,
+ 0x00090800, 0x00090810, 0x20090800, 0x20090810,
+ 0x00080020, 0x00080030, 0x20080020, 0x20080030,
+ 0x00090020, 0x00090030, 0x20090020, 0x20090030,
+ 0x00080820, 0x00080830, 0x20080820, 0x20080830,
+ 0x00090820, 0x00090830, 0x20090820, 0x20090830,
+ },
+ {
+ /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
+ 0x00000000, 0x02000000, 0x00002000, 0x02002000,
+ 0x00200000, 0x02200000, 0x00202000, 0x02202000,
+ 0x00000004, 0x02000004, 0x00002004, 0x02002004,
+ 0x00200004, 0x02200004, 0x00202004, 0x02202004,
+ 0x00000400, 0x02000400, 0x00002400, 0x02002400,
+ 0x00200400, 0x02200400, 0x00202400, 0x02202400,
+ 0x00000404, 0x02000404, 0x00002404, 0x02002404,
+ 0x00200404, 0x02200404, 0x00202404, 0x02202404,
+ 0x10000000, 0x12000000, 0x10002000, 0x12002000,
+ 0x10200000, 0x12200000, 0x10202000, 0x12202000,
+ 0x10000004, 0x12000004, 0x10002004, 0x12002004,
+ 0x10200004, 0x12200004, 0x10202004, 0x12202004,
+ 0x10000400, 0x12000400, 0x10002400, 0x12002400,
+ 0x10200400, 0x12200400, 0x10202400, 0x12202400,
+ 0x10000404, 0x12000404, 0x10002404, 0x12002404,
+ 0x10200404, 0x12200404, 0x10202404, 0x12202404,
+ },
+ {
+ /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
+ 0x00000000, 0x00000001, 0x00040000, 0x00040001,
+ 0x01000000, 0x01000001, 0x01040000, 0x01040001,
+ 0x00000002, 0x00000003, 0x00040002, 0x00040003,
+ 0x01000002, 0x01000003, 0x01040002, 0x01040003,
+ 0x00000200, 0x00000201, 0x00040200, 0x00040201,
+ 0x01000200, 0x01000201, 0x01040200, 0x01040201,
+ 0x00000202, 0x00000203, 0x00040202, 0x00040203,
+ 0x01000202, 0x01000203, 0x01040202, 0x01040203,
+ 0x08000000, 0x08000001, 0x08040000, 0x08040001,
+ 0x09000000, 0x09000001, 0x09040000, 0x09040001,
+ 0x08000002, 0x08000003, 0x08040002, 0x08040003,
+ 0x09000002, 0x09000003, 0x09040002, 0x09040003,
+ 0x08000200, 0x08000201, 0x08040200, 0x08040201,
+ 0x09000200, 0x09000201, 0x09040200, 0x09040201,
+ 0x08000202, 0x08000203, 0x08040202, 0x08040203,
+ 0x09000202, 0x09000203, 0x09040202, 0x09040203,
+ },
+ {
+ /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
+ 0x00000000, 0x00100000, 0x00000100, 0x00100100,
+ 0x00000008, 0x00100008, 0x00000108, 0x00100108,
+ 0x00001000, 0x00101000, 0x00001100, 0x00101100,
+ 0x00001008, 0x00101008, 0x00001108, 0x00101108,
+ 0x04000000, 0x04100000, 0x04000100, 0x04100100,
+ 0x04000008, 0x04100008, 0x04000108, 0x04100108,
+ 0x04001000, 0x04101000, 0x04001100, 0x04101100,
+ 0x04001008, 0x04101008, 0x04001108, 0x04101108,
+ 0x00020000, 0x00120000, 0x00020100, 0x00120100,
+ 0x00020008, 0x00120008, 0x00020108, 0x00120108,
+ 0x00021000, 0x00121000, 0x00021100, 0x00121100,
+ 0x00021008, 0x00121008, 0x00021108, 0x00121108,
+ 0x04020000, 0x04120000, 0x04020100, 0x04120100,
+ 0x04020008, 0x04120008, 0x04020108, 0x04120108,
+ 0x04021000, 0x04121000, 0x04021100, 0x04121100,
+ 0x04021008, 0x04121008, 0x04021108, 0x04121108,
+ },
+ {
+ /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
+ 0x00000000, 0x10000000, 0x00010000, 0x10010000,
+ 0x00000004, 0x10000004, 0x00010004, 0x10010004,
+ 0x20000000, 0x30000000, 0x20010000, 0x30010000,
+ 0x20000004, 0x30000004, 0x20010004, 0x30010004,
+ 0x00100000, 0x10100000, 0x00110000, 0x10110000,
+ 0x00100004, 0x10100004, 0x00110004, 0x10110004,
+ 0x20100000, 0x30100000, 0x20110000, 0x30110000,
+ 0x20100004, 0x30100004, 0x20110004, 0x30110004,
+ 0x00001000, 0x10001000, 0x00011000, 0x10011000,
+ 0x00001004, 0x10001004, 0x00011004, 0x10011004,
+ 0x20001000, 0x30001000, 0x20011000, 0x30011000,
+ 0x20001004, 0x30001004, 0x20011004, 0x30011004,
+ 0x00101000, 0x10101000, 0x00111000, 0x10111000,
+ 0x00101004, 0x10101004, 0x00111004, 0x10111004,
+ 0x20101000, 0x30101000, 0x20111000, 0x30111000,
+ 0x20101004, 0x30101004, 0x20111004, 0x30111004,
+ },
+ {
+ /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
+ 0x00000000, 0x08000000, 0x00000008, 0x08000008,
+ 0x00000400, 0x08000400, 0x00000408, 0x08000408,
+ 0x00020000, 0x08020000, 0x00020008, 0x08020008,
+ 0x00020400, 0x08020400, 0x00020408, 0x08020408,
+ 0x00000001, 0x08000001, 0x00000009, 0x08000009,
+ 0x00000401, 0x08000401, 0x00000409, 0x08000409,
+ 0x00020001, 0x08020001, 0x00020009, 0x08020009,
+ 0x00020401, 0x08020401, 0x00020409, 0x08020409,
+ 0x02000000, 0x0A000000, 0x02000008, 0x0A000008,
+ 0x02000400, 0x0A000400, 0x02000408, 0x0A000408,
+ 0x02020000, 0x0A020000, 0x02020008, 0x0A020008,
+ 0x02020400, 0x0A020400, 0x02020408, 0x0A020408,
+ 0x02000001, 0x0A000001, 0x02000009, 0x0A000009,
+ 0x02000401, 0x0A000401, 0x02000409, 0x0A000409,
+ 0x02020001, 0x0A020001, 0x02020009, 0x0A020009,
+ 0x02020401, 0x0A020401, 0x02020409, 0x0A020409,
+ },
+ {
+ /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
+ 0x00000000, 0x00000100, 0x00080000, 0x00080100,
+ 0x01000000, 0x01000100, 0x01080000, 0x01080100,
+ 0x00000010, 0x00000110, 0x00080010, 0x00080110,
+ 0x01000010, 0x01000110, 0x01080010, 0x01080110,
+ 0x00200000, 0x00200100, 0x00280000, 0x00280100,
+ 0x01200000, 0x01200100, 0x01280000, 0x01280100,
+ 0x00200010, 0x00200110, 0x00280010, 0x00280110,
+ 0x01200010, 0x01200110, 0x01280010, 0x01280110,
+ 0x00000200, 0x00000300, 0x00080200, 0x00080300,
+ 0x01000200, 0x01000300, 0x01080200, 0x01080300,
+ 0x00000210, 0x00000310, 0x00080210, 0x00080310,
+ 0x01000210, 0x01000310, 0x01080210, 0x01080310,
+ 0x00200200, 0x00200300, 0x00280200, 0x00280300,
+ 0x01200200, 0x01200300, 0x01280200, 0x01280300,
+ 0x00200210, 0x00200310, 0x00280210, 0x00280310,
+ 0x01200210, 0x01200310, 0x01280210, 0x01280310,
+ },
+ {
+ /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
+ 0x00000000, 0x04000000, 0x00040000, 0x04040000,
+ 0x00000002, 0x04000002, 0x00040002, 0x04040002,
+ 0x00002000, 0x04002000, 0x00042000, 0x04042000,
+ 0x00002002, 0x04002002, 0x00042002, 0x04042002,
+ 0x00000020, 0x04000020, 0x00040020, 0x04040020,
+ 0x00000022, 0x04000022, 0x00040022, 0x04040022,
+ 0x00002020, 0x04002020, 0x00042020, 0x04042020,
+ 0x00002022, 0x04002022, 0x00042022, 0x04042022,
+ 0x00000800, 0x04000800, 0x00040800, 0x04040800,
+ 0x00000802, 0x04000802, 0x00040802, 0x04040802,
+ 0x00002800, 0x04002800, 0x00042800, 0x04042800,
+ 0x00002802, 0x04002802, 0x00042802, 0x04042802,
+ 0x00000820, 0x04000820, 0x00040820, 0x04040820,
+ 0x00000822, 0x04000822, 0x00040822, 0x04040822,
+ 0x00002820, 0x04002820, 0x00042820, 0x04042820,
+ 0x00002822, 0x04002822, 0x00042822, 0x04042822,
+ },
+ };
+
+ private static final int SPtrans[][] =
+ {
+ {
+ /* nibble 0 */
+ 0x00820200, 0x00020000, 0x80800000, 0x80820200,
+ 0x00800000, 0x80020200, 0x80020000, 0x80800000,
+ 0x80020200, 0x00820200, 0x00820000, 0x80000200,
+ 0x80800200, 0x00800000, 0x00000000, 0x80020000,
+ 0x00020000, 0x80000000, 0x00800200, 0x00020200,
+ 0x80820200, 0x00820000, 0x80000200, 0x00800200,
+ 0x80000000, 0x00000200, 0x00020200, 0x80820000,
+ 0x00000200, 0x80800200, 0x80820000, 0x00000000,
+ 0x00000000, 0x80820200, 0x00800200, 0x80020000,
+ 0x00820200, 0x00020000, 0x80000200, 0x00800200,
+ 0x80820000, 0x00000200, 0x00020200, 0x80800000,
+ 0x80020200, 0x80000000, 0x80800000, 0x00820000,
+ 0x80820200, 0x00020200, 0x00820000, 0x80800200,
+ 0x00800000, 0x80000200, 0x80020000, 0x00000000,
+ 0x00020000, 0x00800000, 0x80800200, 0x00820200,
+ 0x80000000, 0x80820000, 0x00000200, 0x80020200,
+ },
+ {
+ /* nibble 1 */
+ 0x10042004, 0x00000000, 0x00042000, 0x10040000,
+ 0x10000004, 0x00002004, 0x10002000, 0x00042000,
+ 0x00002000, 0x10040004, 0x00000004, 0x10002000,
+ 0x00040004, 0x10042000, 0x10040000, 0x00000004,
+ 0x00040000, 0x10002004, 0x10040004, 0x00002000,
+ 0x00042004, 0x10000000, 0x00000000, 0x00040004,
+ 0x10002004, 0x00042004, 0x10042000, 0x10000004,
+ 0x10000000, 0x00040000, 0x00002004, 0x10042004,
+ 0x00040004, 0x10042000, 0x10002000, 0x00042004,
+ 0x10042004, 0x00040004, 0x10000004, 0x00000000,
+ 0x10000000, 0x00002004, 0x00040000, 0x10040004,
+ 0x00002000, 0x10000000, 0x00042004, 0x10002004,
+ 0x10042000, 0x00002000, 0x00000000, 0x10000004,
+ 0x00000004, 0x10042004, 0x00042000, 0x10040000,
+ 0x10040004, 0x00040000, 0x00002004, 0x10002000,
+ 0x10002004, 0x00000004, 0x10040000, 0x00042000,
+ },
+ {
+ /* nibble 2 */
+ 0x41000000, 0x01010040, 0x00000040, 0x41000040,
+ 0x40010000, 0x01000000, 0x41000040, 0x00010040,
+ 0x01000040, 0x00010000, 0x01010000, 0x40000000,
+ 0x41010040, 0x40000040, 0x40000000, 0x41010000,
+ 0x00000000, 0x40010000, 0x01010040, 0x00000040,
+ 0x40000040, 0x41010040, 0x00010000, 0x41000000,
+ 0x41010000, 0x01000040, 0x40010040, 0x01010000,
+ 0x00010040, 0x00000000, 0x01000000, 0x40010040,
+ 0x01010040, 0x00000040, 0x40000000, 0x00010000,
+ 0x40000040, 0x40010000, 0x01010000, 0x41000040,
+ 0x00000000, 0x01010040, 0x00010040, 0x41010000,
+ 0x40010000, 0x01000000, 0x41010040, 0x40000000,
+ 0x40010040, 0x41000000, 0x01000000, 0x41010040,
+ 0x00010000, 0x01000040, 0x41000040, 0x00010040,
+ 0x01000040, 0x00000000, 0x41010000, 0x40000040,
+ 0x41000000, 0x40010040, 0x00000040, 0x01010000,
+ },
+ {
+ /* nibble 3 */
+ 0x00100402, 0x04000400, 0x00000002, 0x04100402,
+ 0x00000000, 0x04100000, 0x04000402, 0x00100002,
+ 0x04100400, 0x04000002, 0x04000000, 0x00000402,
+ 0x04000002, 0x00100402, 0x00100000, 0x04000000,
+ 0x04100002, 0x00100400, 0x00000400, 0x00000002,
+ 0x00100400, 0x04000402, 0x04100000, 0x00000400,
+ 0x00000402, 0x00000000, 0x00100002, 0x04100400,
+ 0x04000400, 0x04100002, 0x04100402, 0x00100000,
+ 0x04100002, 0x00000402, 0x00100000, 0x04000002,
+ 0x00100400, 0x04000400, 0x00000002, 0x04100000,
+ 0x04000402, 0x00000000, 0x00000400, 0x00100002,
+ 0x00000000, 0x04100002, 0x04100400, 0x00000400,
+ 0x04000000, 0x04100402, 0x00100402, 0x00100000,
+ 0x04100402, 0x00000002, 0x04000400, 0x00100402,
+ 0x00100002, 0x00100400, 0x04100000, 0x04000402,
+ 0x00000402, 0x04000000, 0x04000002, 0x04100400,
+ },
+ {
+ /* nibble 4 */
+ 0x02000000, 0x00004000, 0x00000100, 0x02004108,
+ 0x02004008, 0x02000100, 0x00004108, 0x02004000,
+ 0x00004000, 0x00000008, 0x02000008, 0x00004100,
+ 0x02000108, 0x02004008, 0x02004100, 0x00000000,
+ 0x00004100, 0x02000000, 0x00004008, 0x00000108,
+ 0x02000100, 0x00004108, 0x00000000, 0x02000008,
+ 0x00000008, 0x02000108, 0x02004108, 0x00004008,
+ 0x02004000, 0x00000100, 0x00000108, 0x02004100,
+ 0x02004100, 0x02000108, 0x00004008, 0x02004000,
+ 0x00004000, 0x00000008, 0x02000008, 0x02000100,
+ 0x02000000, 0x00004100, 0x02004108, 0x00000000,
+ 0x00004108, 0x02000000, 0x00000100, 0x00004008,
+ 0x02000108, 0x00000100, 0x00000000, 0x02004108,
+ 0x02004008, 0x02004100, 0x00000108, 0x00004000,
+ 0x00004100, 0x02004008, 0x02000100, 0x00000108,
+ 0x00000008, 0x00004108, 0x02004000, 0x02000008,
+ },
+ {
+ /* nibble 5 */
+ 0x20000010, 0x00080010, 0x00000000, 0x20080800,
+ 0x00080010, 0x00000800, 0x20000810, 0x00080000,
+ 0x00000810, 0x20080810, 0x00080800, 0x20000000,
+ 0x20000800, 0x20000010, 0x20080000, 0x00080810,
+ 0x00080000, 0x20000810, 0x20080010, 0x00000000,
+ 0x00000800, 0x00000010, 0x20080800, 0x20080010,
+ 0x20080810, 0x20080000, 0x20000000, 0x00000810,
+ 0x00000010, 0x00080800, 0x00080810, 0x20000800,
+ 0x00000810, 0x20000000, 0x20000800, 0x00080810,
+ 0x20080800, 0x00080010, 0x00000000, 0x20000800,
+ 0x20000000, 0x00000800, 0x20080010, 0x00080000,
+ 0x00080010, 0x20080810, 0x00080800, 0x00000010,
+ 0x20080810, 0x00080800, 0x00080000, 0x20000810,
+ 0x20000010, 0x20080000, 0x00080810, 0x00000000,
+ 0x00000800, 0x20000010, 0x20000810, 0x20080800,
+ 0x20080000, 0x00000810, 0x00000010, 0x20080010,
+ },
+ {
+ /* nibble 6 */
+ 0x00001000, 0x00000080, 0x00400080, 0x00400001,
+ 0x00401081, 0x00001001, 0x00001080, 0x00000000,
+ 0x00400000, 0x00400081, 0x00000081, 0x00401000,
+ 0x00000001, 0x00401080, 0x00401000, 0x00000081,
+ 0x00400081, 0x00001000, 0x00001001, 0x00401081,
+ 0x00000000, 0x00400080, 0x00400001, 0x00001080,
+ 0x00401001, 0x00001081, 0x00401080, 0x00000001,
+ 0x00001081, 0x00401001, 0x00000080, 0x00400000,
+ 0x00001081, 0x00401000, 0x00401001, 0x00000081,
+ 0x00001000, 0x00000080, 0x00400000, 0x00401001,
+ 0x00400081, 0x00001081, 0x00001080, 0x00000000,
+ 0x00000080, 0x00400001, 0x00000001, 0x00400080,
+ 0x00000000, 0x00400081, 0x00400080, 0x00001080,
+ 0x00000081, 0x00001000, 0x00401081, 0x00400000,
+ 0x00401080, 0x00000001, 0x00001001, 0x00401081,
+ 0x00400001, 0x00401080, 0x00401000, 0x00001001,
+ },
+ {
+ /* nibble 7 */
+ 0x08200020, 0x08208000, 0x00008020, 0x00000000,
+ 0x08008000, 0x00200020, 0x08200000, 0x08208020,
+ 0x00000020, 0x08000000, 0x00208000, 0x00008020,
+ 0x00208020, 0x08008020, 0x08000020, 0x08200000,
+ 0x00008000, 0x00208020, 0x00200020, 0x08008000,
+ 0x08208020, 0x08000020, 0x00000000, 0x00208000,
+ 0x08000000, 0x00200000, 0x08008020, 0x08200020,
+ 0x00200000, 0x00008000, 0x08208000, 0x00000020,
+ 0x00200000, 0x00008000, 0x08000020, 0x08208020,
+ 0x00008020, 0x08000000, 0x00000000, 0x00208000,
+ 0x08200020, 0x08008020, 0x08008000, 0x00200020,
+ 0x08208000, 0x00000020, 0x00200020, 0x08008000,
+ 0x08208020, 0x00200000, 0x08200000, 0x08000020,
+ 0x00208000, 0x00008020, 0x08008020, 0x08200000,
+ 0x00000020, 0x08208000, 0x00208020, 0x00000000,
+ 0x08000000, 0x08200020, 0x00008000, 0x00208020
+ }
+ };
+
+ private static final int cov_2char[] =
+ {
+ 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
+ 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44,
+ 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C,
+ 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54,
+ 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62,
+ 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A,
+ 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72,
+ 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A
+ };
+
+ private static final int byteToUnsigned(byte b)
+ {
+ int value = (int)b;
+
+ return(value >= 0 ? value : value + 256);
+ }
+
+ private static int fourBytesToInt(byte b[], int offset)
+ {
+ int value;
+
+ value = byteToUnsigned(b[offset++]);
+ value |= (byteToUnsigned(b[offset++]) << 8);
+ value |= (byteToUnsigned(b[offset++]) << 16);
+ value |= (byteToUnsigned(b[offset++]) << 24);
+
+ return(value);
+ }
+
+ private static final void intToFourBytes(int iValue, byte b[], int offset)
+ {
+ b[offset++] = (byte)((iValue) & 0xff);
+ b[offset++] = (byte)((iValue >>> 8 ) & 0xff);
+ b[offset++] = (byte)((iValue >>> 16) & 0xff);
+ b[offset++] = (byte)((iValue >>> 24) & 0xff);
+ }
+
+ private static final void PERM_OP(int a, int b, int n, int m, int results[])
+ {
+ int t;
+
+ t = ((a >>> n) ^ b) & m;
+ a ^= t << n;
+ b ^= t;
+
+ results[0] = a;
+ results[1] = b;
+ }
+
+ private static final int HPERM_OP(int a, int n, int m)
+ {
+ int t;
+
+ t = ((a << (16 - n)) ^ a) & m;
+ a = a ^ t ^ (t >>> (16 - n));
+
+ return(a);
+ }
+
+ private static int [] des_set_key(byte key[])
+ {
+ int schedule[] = new int[ITERATIONS * 2];
+
+ int c = fourBytesToInt(key, 0);
+ int d = fourBytesToInt(key, 4);
+
+ int results[] = new int[2];
+
+ PERM_OP(d, c, 4, 0x0f0f0f0f, results);
+ d = results[0]; c = results[1];
+
+ c = HPERM_OP(c, -2, 0xcccc0000);
+ d = HPERM_OP(d, -2, 0xcccc0000);
+
+ PERM_OP(d, c, 1, 0x55555555, results);
+ d = results[0]; c = results[1];
+
+ PERM_OP(c, d, 8, 0x00ff00ff, results);
+ c = results[0]; d = results[1];
+
+ PERM_OP(d, c, 1, 0x55555555, results);
+ d = results[0]; c = results[1];
+
+ d = (((d & 0x000000ff) << 16) | (d & 0x0000ff00) |
+ ((d & 0x00ff0000) >>> 16) | ((c & 0xf0000000) >>> 4));
+ c &= 0x0fffffff;
+
+ int s, t;
+ int j = 0;
+
+ for(int i = 0; i < ITERATIONS; i ++)
+ {
+ if(shifts2[i])
+ {
+ c = (c >>> 2) | (c << 26);
+ d = (d >>> 2) | (d << 26);
+ }
+ else
+ {
+ c = (c >>> 1) | (c << 27);
+ d = (d >>> 1) | (d << 27);
+ }
+
+ c &= 0x0fffffff;
+ d &= 0x0fffffff;
+
+ s = skb[0][ (c ) & 0x3f ]|
+ skb[1][((c >>> 6) & 0x03) | ((c >>> 7) & 0x3c)]|
+ skb[2][((c >>> 13) & 0x0f) | ((c >>> 14) & 0x30)]|
+ skb[3][((c >>> 20) & 0x01) | ((c >>> 21) & 0x06) |
+ ((c >>> 22) & 0x38)];
+
+ t = skb[4][ (d ) & 0x3f ]|
+ skb[5][((d >>> 7) & 0x03) | ((d >>> 8) & 0x3c)]|
+ skb[6][ (d >>>15) & 0x3f ]|
+ skb[7][((d >>>21) & 0x0f) | ((d >>> 22) & 0x30)];
+
+ schedule[j++] = ((t << 16) | (s & 0x0000ffff)) & 0xffffffff;
+ s = ((s >>> 16) | (t & 0xffff0000));
+
+ s = (s << 4) | (s >>> 28);
+ schedule[j++] = s & 0xffffffff;
+ }
+ return(schedule);
+ }
+
+ private static final int D_ENCRYPT
+ (
+ int L, int R, int S, int E0, int E1, int s[]
+ )
+ {
+ int t, u, v;
+
+ v = R ^ (R >>> 16);
+ u = v & E0;
+ v = v & E1;
+ u = (u ^ (u << 16)) ^ R ^ s[S];
+ t = (v ^ (v << 16)) ^ R ^ s[S + 1];
+ t = (t >>> 4) | (t << 28);
+
+ L ^= SPtrans[1][(t ) & 0x3f] |
+ SPtrans[3][(t >>> 8) & 0x3f] |
+ SPtrans[5][(t >>> 16) & 0x3f] |
+ SPtrans[7][(t >>> 24) & 0x3f] |
+ SPtrans[0][(u ) & 0x3f] |
+ SPtrans[2][(u >>> 8) & 0x3f] |
+ SPtrans[4][(u >>> 16) & 0x3f] |
+ SPtrans[6][(u >>> 24) & 0x3f];
+
+ return(L);
+ }
+
+ private static final int [] body(int schedule[], int Eswap0, int Eswap1)
+ {
+ int left = 0;
+ int right = 0;
+ int t = 0;
+
+ for(int j = 0; j < 25; j ++)
+ {
+ for(int i = 0; i < ITERATIONS * 2; i += 4)
+ {
+ left = D_ENCRYPT(left, right, i, Eswap0, Eswap1, schedule);
+ right = D_ENCRYPT(right, left, i + 2, Eswap0, Eswap1, schedule);
+ }
+ t = left;
+ left = right;
+ right = t;
+ }
+
+ t = right;
+
+ right = (left >>> 1) | (left << 31);
+ left = (t >>> 1) | (t << 31);
+
+ left &= 0xffffffff;
+ right &= 0xffffffff;
+
+ int results[] = new int[2];
+
+ PERM_OP(right, left, 1, 0x55555555, results);
+ right = results[0]; left = results[1];
+
+ PERM_OP(left, right, 8, 0x00ff00ff, results);
+ left = results[0]; right = results[1];
+
+ PERM_OP(right, left, 2, 0x33333333, results);
+ right = results[0]; left = results[1];
+
+ PERM_OP(left, right, 16, 0x0000ffff, results);
+ left = results[0]; right = results[1];
+
+ PERM_OP(right, left, 4, 0x0f0f0f0f, results);
+ right = results[0]; left = results[1];
+
+ int out[] = new int[2];
+
+ out[0] = left; out[1] = right;
+
+ return(out);
+ }
+
+ /**
+ *
Encrypt a password given the cleartext password and a "salt".
+ * @param salt A two-character string representing the salt used to
+ * iterate the encryption engine in lots of different ways. If you
+ * are generating a new encryption then this value should be
+ * randomised.
+ * @param original The password to be encrypted.
+ * @return A string consisting of the 2-character salt followed by the
+ * encrypted password.
+ */
+ public static final String crypt(String salt, String original)
+ {
+ while(salt.length() < 2)
+ salt += "A";
+
+ StringBuffer buffer = new StringBuffer(" ");
+
+ char charZero = salt.charAt(0);
+ char charOne = salt.charAt(1);
+
+ buffer.setCharAt(0, charZero);
+ buffer.setCharAt(1, charOne);
+
+ int Eswap0 = con_salt[(int)charZero];
+ int Eswap1 = con_salt[(int)charOne] << 4;
+
+ byte key[] = new byte[8];
+
+ for(int i = 0; i < key.length; i ++)
+ key[i] = (byte)0;
+
+ for(int i = 0; i < key.length && i < original.length(); i ++)
+ {
+ int iChar = (int)original.charAt(i);
+
+ key[i] = (byte)(iChar << 1);
+ }
+
+ int schedule[] = des_set_key(key);
+ int out[] = body(schedule, Eswap0, Eswap1);
+
+ byte b[] = new byte[9];
+
+ intToFourBytes(out[0], b, 0);
+ intToFourBytes(out[1], b, 4);
+ b[8] = 0;
+
+ for(int i = 2, y = 0, u = 0x80; i < 13; i ++)
+ {
+ for(int j = 0, c = 0; j < 6; j ++)
+ {
+ c <<= 1;
+
+ if(((int)b[y] & u) != 0)
+ c |= 1;
+
+ u >>>= 1;
+
+ if(u == 0)
+ {
+ y++;
+ u = 0x80;
+ }
+ buffer.setCharAt(i, (char)cov_2char[c]);
+ }
+ }
+ return(buffer.toString());
+ }
+
+ /**
+ *
Encrypt a password given the cleartext password. This method
+ * generates a random salt using the 'java.util.Random' class.
+ * @param original The password to be encrypted.
+ * @return A string consisting of the 2-character salt followed by the
+ * encrypted password.
+ */
+ public static final String crypt(String original)
+ {
+ java.util.Random randomGenerator = new java.util.Random();
+ int numSaltChars = saltChars.length;
+ String salt;
+
+ salt = (new StringBuffer()).append(saltChars[Math.abs(randomGenerator.nextInt()) % numSaltChars]).append(saltChars[Math.abs(randomGenerator.nextInt()) % numSaltChars]).toString();
+
+ return crypt(salt, original);
+ }
+
+ /**
+ *
Check that enteredPassword encrypts to
+ * encryptedPassword.
+ * @param encryptedPassword The encryptedPassword. The first
+ * two characters are assumed to be the salt. This string would
+ * be the same as one found in a Unix /etc/passwd file.
+ * @param enteredPassword The password as entered by the user (or
+ * otherwise aquired).
+ * @return true if the password should be considered correct.
+ */
+ public final static boolean matches(String encryptedPassword, String enteredPassword)
+ {
+ String salt = encryptedPassword.substring(0, 3);
+ String newCrypt = crypt(salt, enteredPassword);
+
+ return newCrypt.equals(encryptedPassword);
+ }
+}
+
--- /dev/null
+/**
+ * Redistribution and use of this software and associated documentation
+ * ("Software"), with or without modification, are permitted provided
+ * that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain copyright
+ * statements and notices. Redistributions must also contain a
+ * copy of this document.
+ *
+ * 2. Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and the
+ * following disclaimer in the documentation and/or other
+ * materials provided with the distribution.
+ *
+ * 3. The name "Exolab" must not be used to endorse or promote
+ * products derived from this Software without prior written
+ * permission of Exoffice Technologies. For written permission,
+ *
+ * 4. Products derived from this Software may not be called "Exolab"
+ * nor may "Exolab" appear in their names without prior written
+ * permission of Exoffice Technologies. Exolab is a registered
+ * trademark of Exoffice Technologies.
+ *
+ * 5. Due credit should be given to the Exolab Project
+ * (http://www.exolab.org/).
+ *
+ * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
+ * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright 1999 (C) Exoffice Technologies Inc. All Rights Reserved.
+ *
+ * $Id: ClientConnection.java,v 1.1 2000/04/17 20:07:55 peter Exp $
+ */
+
+
+package org.postgresql.xa;
+
+
+import java.util.*;
+import java.sql.*;
+
+
+/**
+ * Encapsulates an application's view of an XA/pooled connection.
+ * The XA connection is managed by the application server through it's
+ * {@link javax.sql.XAConnection} interface. The underlying JDBC
+ * connection is a standard JDBC connection. The application's
+ * JDBC connection gives access to the underlying JDBC connection but
+ * is managed by the application server. The application is given an
+ * instance of this class and not the underlying connection directly.
+ *
+ *
+ * @version 1.0
+ * @see XAConnectionImpl
+ * @see XADataSourceImpl
+ * @see Connection
+ */
+final class ClientConnection
+ implements Connection
+{
+
+
+ /**
+ * The pooled XA connection that created this client connection
+ * and should be used to report closure and fatal errors.
+ */
+ private XAConnectionImpl _xaConn;
+
+
+ /**
+ * This identifier was handed on to use when we were created by
+ * {@link XAConnection}. If since then the XA connection was asked
+ * to create another connection or was closed, our identifier will
+ * no longer be valid and any call to {@link
+ * XAConnection#getUnderlying} will throw an exception. Previously,
+ * the XA connection would hold a reference to use and tell us to
+ * terminate, but that prevented ClientConnection from being
+ * finalized.
+ */
+ private int _clientId;
+
+
+
+
+ /**
+ * Construct a new client connection to provide access to the
+ * underlying JDBC connection (underlying) on behalf of
+ * an XA/pooled connection (xaConn). The pooled connection
+ * is required to notify of connection closure and fatal errors.
+ *
+ * @param xaConn The XA/pooled connection that created this
+ * client connection
+ * @param clientId A unique identifier handed to us by
+ * {@link XAConnection}
+ * @param underlying The underlying JDBC connection
+ */
+ ClientConnection( XAConnectionImpl xaConn, int clientId )
+ {
+ _xaConn = xaConn;
+ _clientId = clientId;
+ }
+
+
+ public Statement createStatement()
+ throws SQLException
+ {
+ try {
+ return getUnderlying().createStatement();
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public Statement createStatement( int resultSetType, int resultSetConcurrency )
+ throws SQLException
+ {
+ try {
+ return getUnderlying().createStatement( resultSetType, resultSetConcurrency );
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public PreparedStatement prepareStatement( String sql )
+ throws SQLException
+ {
+ try {
+ return getUnderlying().prepareStatement( sql );
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public PreparedStatement prepareStatement( String sql, int resultSetType, int resultSetConcurrency )
+ throws SQLException
+ {
+ try {
+ return getUnderlying().prepareStatement( sql, resultSetType, resultSetConcurrency );
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public CallableStatement prepareCall( String sql )
+ throws SQLException
+ {
+ try {
+ return getUnderlying().prepareCall( sql );
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public CallableStatement prepareCall( String sql, int resultSetType, int resultSetConcurrency )
+ throws SQLException
+ {
+ try {
+ return getUnderlying().prepareCall( sql, resultSetType, resultSetConcurrency );
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public String nativeSQL( String sql )
+ throws SQLException
+ {
+ try {
+ return getUnderlying().nativeSQL( sql );
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public DatabaseMetaData getMetaData()
+ throws SQLException
+ {
+ try {
+ return getUnderlying().getMetaData();
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public void setCatalog( String catalog )
+ throws SQLException
+ {
+ try {
+ getUnderlying().setCatalog( catalog );
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public String getCatalog()
+ throws SQLException
+ {
+ try {
+ return getUnderlying().getCatalog();
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public SQLWarning getWarnings()
+ throws SQLException
+ {
+ try {
+ return getUnderlying().getWarnings();
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public void clearWarnings()
+ throws SQLException
+ {
+ try {
+ getUnderlying().clearWarnings();
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public Map getTypeMap()
+ throws SQLException
+ {
+ try {
+ return getUnderlying().getTypeMap();
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public void setTypeMap( Map map )
+ throws SQLException
+ {
+ try {
+ getUnderlying().setTypeMap( map );
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public void setAutoCommit( boolean autoCommit )
+ throws SQLException
+ {
+ // Cannot set auto-commit inside a transaction.
+ if ( _xaConn.insideGlobalTx() )
+ throw new SQLException( "Cannot commit/rollback a connection managed by the transaction manager" );
+ try {
+ getUnderlying().setAutoCommit( autoCommit );
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public boolean getAutoCommit()
+ throws SQLException
+ {
+ try {
+ return getUnderlying().getAutoCommit();
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public void commit()
+ throws SQLException
+ {
+ // Cannot commit directly if we're inside a global transaction.
+ if ( _xaConn.insideGlobalTx() )
+ throw new SQLException( "Cannot commit/rollback a connection managed by the transaction manager" );
+ // Cannot commit a read-only transaction.
+ if ( isReadOnly() )
+ throw new SQLException( "Cannot commit/rollback a read-only transaction" );
+
+ // This only occurs if not inside a local transaction.
+ try {
+ getUnderlying().commit();
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+
+ public void rollback()
+ throws SQLException
+ {
+ // Cannot commit directly if we're inside a global transaction.
+ if ( _xaConn.insideGlobalTx() )
+ throw new SQLException( "Cannot commit/rollback a connection managed by the transaction manager" );
+
+ // This only occurs if not inside a local transaction.
+ try {
+ getUnderlying().rollback();
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public void setReadOnly( boolean readOnly )
+ throws SQLException
+ {
+ try {
+ getUnderlying().setReadOnly( readOnly );
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public boolean isReadOnly()
+ throws SQLException
+ {
+ try {
+ return getUnderlying().isReadOnly();
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public void setTransactionIsolation( int level )
+ throws SQLException
+ {
+ try {
+ getUnderlying().setTransactionIsolation( level );
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public int getTransactionIsolation()
+ throws SQLException
+ {
+ try {
+ return getUnderlying().getTransactionIsolation();
+ } catch ( SQLException except ) {
+ notifyError( except );
+ throw except;
+ }
+ }
+
+
+ public synchronized void close()
+ throws SQLException
+ {
+ if ( _xaConn == null )
+ return;
+
+ // Notify the XA connection that we are no longer going
+ // to be used. Whether the underlying connection is released,
+ // held until the transaction terminates, etc is not
+ // a concern of us.
+ _xaConn.notifyClose( _clientId );
+ _xaConn = null;
+ }
+
+
+ public synchronized boolean isClosed()
+ {
+ // Simple way of determining if this connection is closed.
+ // The actual connection is never closed, it is pooled.
+ return ( _xaConn == null );
+ }
+
+
+ /**
+ * Called by {@link XAConnectionImpl} to terminate this connection
+ * by dissociating it from the underlying JDBC connection.
+ * The application would call {@link #close} but {@link
+ * XAConnectionImpl} cannot, since pooled connection requirements
+ * will cause an inifinite loop. This method should not attempt
+ * to notify either a closure or fatal error, but rather throw an
+ * exception if it fails.
+ */
+ /* Deprecated: see XAConnection._clientId
+ void terminate()
+ {
+ _xaConn = null;
+ }
+ */
+
+
+ protected void finalize()
+ throws Throwable
+ {
+ close();
+ }
+
+
+ public String toString()
+ {
+ try {
+ return getUnderlying().toString();
+ } catch ( SQLException except ) {
+ return "XAConnection: Connection closed";
+ }
+ }
+
+
+ /**
+ * Called when an exception is thrown by the underlying connection
+ * to determine whether the exception is critical or not. If the
+ * exception is critical, notifies the XA connection to forget
+ * about this connection.
+ *
+ * @param except The exception thrown by the underlying
+ * connection
+ */
+ void notifyError( SQLException except )
+ {
+ if ( _xaConn != null )
+ _xaConn.notifyError( _clientId, except );
+ }
+
+
+ /**
+ * Called to retrieve the underlying JDBC connection. Actual JDBC
+ * operations are performed against it. Throws an SQLException if
+ * this connection has been closed.
+ */
+ Connection getUnderlying()
+ throws SQLException
+ {
+ if ( _xaConn == null )
+ throw new SQLException( "This connection has been closed" );
+ // Must pass the client identifier so XAConnection can determine
+ // whether we are still valid. If it tells us we're no longer
+ // valid, we have little to do.
+ try {
+ return _xaConn.getUnderlying( _clientId );
+ } catch ( SQLException except ) {
+ _xaConn = null;
+ throw except;
+ }
+ }
+
+
+}
+
+
+
--- /dev/null
+package org.postgresql.xa;
+
+
+import java.sql.*;
+import javax.sql.*;
+import javax.transaction.xa.*;
+
+
+public class Test
+{
+
+
+ public static void main( String args[] )
+ {
+ XADataSource xaDS;
+ java.io.PrintWriter log;
+
+ log = new java.io.PrintWriter( System.out );
+ try {
+
+ xaDS = new XADataSource();
+ xaDS.setDatabaseName( "test" );
+ xaDS.setUser( "arkin" );
+ xaDS.setPassword( "natasha" );
+ xaDS.setLogWriter( log );
+
+ Thread1 thread1;
+
+ thread1 = new Thread1();
+ thread1.xaConn = xaDS.getXAConnection();
+ thread1.xid1 = new XidImpl();
+
+ Thread2 thread2;
+
+ thread2 = new Thread2();
+ thread1.thread2 = thread2;
+ thread2.thread1 = thread1;
+ thread2.xaConn = xaDS.getXAConnection();
+ thread2.xid1 = thread1.xid1;
+ thread2.xid2 = new XidImpl();
+
+ thread1.start();
+ thread2.start();
+
+ } catch ( Exception except ) {
+ System.out.println( except );
+ except.printStackTrace();
+ }
+ log.flush();
+ }
+
+
+}
+
+
+class Thread1
+ extends Thread
+{
+
+
+ public void run()
+ {
+ Connection conn;
+ XAResource xaRes;
+ Statement stmt;
+ ResultSet rs;
+
+ try {
+ conn = xaConn.getConnection();
+ xaRes = xaConn.getXAResource();
+ } catch ( Exception except ) {
+ System.out.println( except );
+ return;
+ }
+ // Initially the table should have no value.
+ try {
+ stmt = conn.createStatement();
+ stmt.executeUpdate( "update test set text='nothing' where id=1" );
+ stmt.close();
+ } catch ( SQLException except ) {
+ System.out.println( except );
+ }
+
+
+ // Begin a transaction on this connection.
+ // Perform an update on the table.
+ System.out.println( "[Thread1] Starting transaction" );
+ try {
+ xaRes.start( xid1, XAResource.TMNOFLAGS );
+ } catch ( XAException except ) {
+ System.out.println( except );
+ return;
+ }
+ System.out.println( "[Thread1] Updating table" );
+ try {
+ stmt = conn.createStatement();
+ stmt.executeUpdate( "update test set text='first' where id=1" );
+ stmt.close();
+ } catch ( SQLException except ) {
+ System.out.println( except );
+ }
+
+
+ // Thread2 will start a new transction and attempt
+ // to perform an update on the table and will lock.
+ System.out.println( "[Thread1] Waking up Thread2" );
+ thread2.interrupt();
+ try {
+ sleep( Integer.MAX_VALUE );
+ } catch ( InterruptedException except ) { }
+
+
+ // Perform a select from the table just to prove
+ // that Thread2 failed in its update.
+ System.out.println( "[Thread1] Selecting from table" );
+ try {
+ stmt = conn.createStatement();
+ rs = stmt.executeQuery( "select text from test where id=1" );
+ rs.next();
+ System.out.println( "First = " + rs.getString( 1 ) );
+ rs.close();
+ stmt.close();
+ } catch ( SQLException except ) {
+ System.out.println( except );
+ }
+
+
+ // Thread2 will now attempt to join our transaction
+ // and perform an update on the table.
+ System.out.println( "[Thread1] Waking up Thread2" );
+ thread2.interrupt();
+ try {
+ sleep( Integer.MAX_VALUE );
+ } catch ( InterruptedException except ) { }
+
+
+ // Perform a select from the table to prove that
+ // Thread2 managed to update it.
+ System.out.println( "[Thread1] Selecting from table" );
+ try {
+ stmt = conn.createStatement();
+ rs = stmt.executeQuery( "select text from test where id=1" );
+ rs.next();
+ System.out.println( "First = " + rs.getString( 1 ) );
+ rs.close();
+ stmt.close();
+ } catch ( SQLException except ) {
+ System.out.println( except );
+ }
+
+
+ // We now end the transaction for this thread.
+ // We are no longer in the shared transaction.
+ // Perform an update on the table and the update
+ // will lock.
+ System.out.println( "[Thread1] Ending transaction" );
+ try {
+ xaRes.end( xid1, XAResource.TMSUCCESS );
+ } catch ( XAException except ) {
+ System.out.println( except );
+ return;
+ }
+ System.out.println( "[Thread1] Selecting from table" );
+ try {
+ stmt = conn.createStatement();
+ stmt.executeUpdate( "update test set text='first' where id=1" );
+ stmt.close();
+ } catch ( SQLException except ) {
+ System.out.println( except );
+ }
+
+
+ // Thread 2 will now end the transcation and commit it.
+ System.out.println( "[Thread1] Waking up Thread2" );
+ thread2.interrupt();
+ try {
+ sleep( Integer.MAX_VALUE );
+ } catch ( InterruptedException except ) { }
+
+
+ // Perform a select on the table to prove that it
+ // was only updated inside the transaction.
+ System.out.println( "[Thread1] Selecting from table" );
+ try {
+ stmt = conn.createStatement();
+ rs = stmt.executeQuery( "select text from test where id=1" );
+ rs.next();
+ System.out.println( "First = " + rs.getString( 1 ) );
+ rs.close();
+ stmt.close();
+ } catch ( SQLException except ) {
+ System.out.println( except );
+ }
+ }
+
+
+ javax.sql.XAConnection xaConn;
+
+
+ Xid xid1;
+
+
+ Thread thread2;
+
+
+}
+
+
+class Thread2
+ extends Thread
+{
+
+
+ public void run()
+ {
+ Connection conn;
+ XAResource xaRes;
+ Statement stmt;
+ ResultSet rs;
+
+
+ try {
+ conn = xaConn.getConnection();
+ xaRes = xaConn.getXAResource();
+ } catch ( Exception except ) {
+ System.out.println( except );
+ return;
+ }
+ // Thread2 immediately goes to sleep, waits
+ // for Thread1 to wake it up.
+ try {
+ sleep( Integer.MAX_VALUE );
+ } catch ( InterruptedException except ) { }
+
+
+ // Begin a transaction on this connection.
+ // Perform an update on the table. This will
+ // lock since Thread1 is in a different transaction
+ // updating the same table.
+ System.out.println( "[Thread2] Starting transaction" );
+ try {
+ xaRes.start( xid2, XAResource.TMNOFLAGS );
+ } catch ( XAException except ) {
+ System.out.println( except );
+ return;
+ }
+ System.out.println( "[Thread2] Updating table" );
+ try {
+ stmt = conn.createStatement();
+ stmt.executeUpdate( "update test set text='second' where id=1" );
+ stmt.close();
+ } catch ( SQLException except ) {
+ System.out.println( except );
+ }
+
+
+ // Thread1 will now proof that it owns the
+ // transaction.
+ System.out.println( "[Thread2] Waking up Thread1" );
+ thread1.interrupt();
+ try {
+ sleep( Integer.MAX_VALUE );
+ } catch ( InterruptedException except ) { }
+
+
+ // We will now join the transaction shared with
+ // Thread1 and try to update the table again.
+ System.out.println( "[Thread2] Dumping transaction" );
+ try {
+ xaRes.end( xid2, XAResource.TMFAIL );
+ // xaRes.rollback( xid2 );
+ xaRes.forget( xid2 );
+ } catch ( XAException except ) {
+ System.out.println( except );
+ return;
+ }
+ System.out.println( "[Thread2] Joining transaction of Thread1" );
+ try {
+ xaRes.start( xid1, XAResource.TMJOIN );
+ } catch ( XAException except ) {
+ System.out.println( except );
+ return;
+ }
+ System.out.println( "[Thread2] Updating table" );
+ try {
+ stmt = conn.createStatement();
+ stmt.executeUpdate( "update test set text='second' where id=1" );
+ stmt.close();
+ } catch ( SQLException except ) {
+ System.out.println( except );
+ }
+
+
+ // Thread1 will now proof that it could update
+ // the table.
+ System.out.println( "[Thread2] Waking up Thread1" );
+ thread1.interrupt();
+ try {
+ sleep( Integer.MAX_VALUE );
+ } catch ( InterruptedException except ) { }
+
+
+ // We will now end the transaction and commit it.
+ System.out.println( "[Thread2] Commiting transaction" );
+ try {
+ xaRes.end( xid1, XAResource.TMSUCCESS );
+ xaRes.prepare( xid1 );
+ xaRes.commit( xid1, false );
+ xaRes.forget( xid1 );
+ } catch ( XAException except ) {
+ System.out.println( except );
+ return;
+ }
+
+
+ // Perform a select on the table to prove that it
+ // was only updated inside the transaction.
+ System.out.println( "[Thread2] Selecting from table" );
+ try {
+ stmt = conn.createStatement();
+ rs = stmt.executeQuery( "select text from test where id=1" );
+ rs.next();
+ System.out.println( "First = " + rs.getString( 1 ) );
+ rs.close();
+ stmt.close();
+ } catch ( SQLException except ) {
+ System.out.println( except );
+ }
+
+
+ // Thread1 will now proof that the table was only
+ // updated inside the transaction. Thread 2 will die.
+ System.out.println( "[Thread2] Waking up Thread1" );
+ thread1.interrupt();
+ }
+
+
+ javax.sql.XAConnection xaConn;
+
+
+ Xid xid1;
+
+
+ Xid xid2;
+
+
+ Thread thread1;
+
+
+}
+
+
+
+class XidImpl
+ implements Xid
+{
+
+
+ public byte[] getBranchQualifier()
+ {
+ return null;
+ }
+
+
+ public byte[] getGlobalTransactionId()
+ {
+ return null;
+ }
+
+
+ public int getFormatId()
+ {
+ return 0;
+ }
+
+
+}
--- /dev/null
+/**
+ * Redistribution and use of this software and associated documentation
+ * ("Software"), with or without modification, are permitted provided
+ * that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain copyright
+ * statements and notices. Redistributions must also contain a
+ * copy of this document.
+ *
+ * 2. Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and the
+ * following disclaimer in the documentation and/or other
+ * materials provided with the distribution.
+ *
+ * 3. The name "Exolab" must not be used to endorse or promote
+ * products derived from this Software without prior written
+ * permission of Exoffice Technologies. For written permission,
+ *
+ * 4. Products derived from this Software may not be called "Exolab"
+ * nor may "Exolab" appear in their names without prior written
+ * permission of Exoffice Technologies. Exolab is a registered
+ * trademark of Exoffice Technologies.
+ *
+ * 5. Due credit should be given to the Exolab Project
+ * (http://www.exolab.org/).
+ *
+ * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
+ * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright 1999 (C) Exoffice Technologies Inc. All Rights Reserved.
+ *
+ * $Id: TwoPhaseConnection.java,v 1.1 2000/04/17 20:07:55 peter Exp $
+ */
+
+
+package org.postgresql.xa;
+
+
+import java.sql.SQLException;
+
+
+/**
+ * Defines two-phase commit support for a JDBC connection used by
+ * {@link XAConnection}. A JDBC connection that can implement any of
+ * these features should extend this interface and attempt to
+ * implement as much as it can.
+ * {@link #prepare} is used as part of the two phase commit protocol
+ * to determine whether the transaction can commit or must rollback.
+ * Failure to implement this method will cause all connections to vote
+ * for commit, whether or not they can actually commit, leading to
+ * mixed heuristics.
+ * {@link #enableSQLTransactions} allows the SQL begin/commit/rollback
+ * commands to be disabled for the duration of a transaction managed
+ * through an {@link javax.transaction.xaXAResource}, preventing the
+ * application from demarcating transactions directly.
+ * {@link #isCriticalError} is used to tell if an exception thrown by
+ * the connection is fatal and the connection should not be returned
+ * to the pool.
+ *
+ *
+ * @version 1.0
+ */
+public interface TwoPhaseConnection
+{
+
+
+ /**
+ * Enables or disables transaction demarcation through SQL commit
+ * and rollback. When the connection falls under control of
+ * {@link XAConnection}, SQL commit/rollback commands will be
+ * disabled to prevent direct transaction demarcation.
+ *
+ * @param flag True to enable SQL transactions (the default)
+ */
+ public void enableSQLTransactions( boolean flag );
+
+
+ /**
+ * Called to prepare the transaction for commit. Returns true if
+ * the transaction is prepared, false if the transaction is
+ * read-only. If the transaction has been marked for rollback,
+ * throws a {@link RollbackException}.
+ *
+ * @return True if can commit, false if read-only
+ * @throws SQLException If transaction has been marked for
+ * rollback or cannot commit for any other reason
+ */
+ public boolean prepare()
+ throws SQLException;
+
+
+ /**
+ * Returns true if the error issued by this connection is a
+ * critical error and the connection should be terminated.
+ *
+ * @param except The exception thrown by this connection
+ */
+ public boolean isCriticalError( SQLException except );
+
+
+}
--- /dev/null
+/**
+ * Redistribution and use of this software and associated documentation
+ * ("Software"), with or without modification, are permitted provided
+ * that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain copyright
+ * statements and notices. Redistributions must also contain a
+ * copy of this document.
+ *
+ * 2. Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and the
+ * following disclaimer in the documentation and/or other
+ * materials provided with the distribution.
+ *
+ * 3. The name "Exolab" must not be used to endorse or promote
+ * products derived from this Software without prior written
+ * permission of Exoffice Technologies. For written permission,
+ *
+ * 4. Products derived from this Software may not be called "Exolab"
+ * nor may "Exolab" appear in their names without prior written
+ * permission of Exoffice Technologies. Exolab is a registered
+ * trademark of Exoffice Technologies.
+ *
+ * 5. Due credit should be given to the Exolab Project
+ * (http://www.exolab.org/).
+ *
+ * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
+ * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright 1999 (C) Exoffice Technologies Inc. All Rights Reserved.
+ *
+ * $Id: TxConnection.java,v 1.1 2000/04/17 20:07:56 peter Exp $
+ */
+
+
+package org.postgresql.xa;
+
+
+import java.sql.Connection;
+import javax.transaction.xa.Xid;
+
+
+/**
+ * Describes an open connection associated with a transaction. When a
+ * transaction is opened for a connection, this record is created for
+ * the connection. It indicates the underlying JDBC connection and
+ * transaction Xid. Multiple XA connection that fall under the same
+ * transaction Xid will share the same TxConnection object.
+ *
+ *
+ * @version 1.0
+ * @see Xid
+ * @see XAConnectionImpl
+ */
+final class TxConnection
+{
+
+
+ /**
+ * The Xid of the transactions. Connections that are not
+ * associated with a transaction are not represented here.
+ */
+ Xid xid;
+
+
+ /**
+ * Holds the underlying JDBC connection for as long as this
+ * connection is useable. If the connection has been rolled back,
+ * timed out or had any other error, this variable will null
+ * and the connection is considered failed.
+ */
+ Connection conn;
+
+
+
+ /**
+ * Indicates the clock time (in ms) when the transaction should
+ * time out. The transaction times out when
+ * System.currentTimeMillis() > timeout.
+ */
+ long timeout;
+
+
+ /**
+ * Indicates the clock time (in ms) when the transaction started.
+ */
+ long started;
+
+
+ /**
+ * Reference counter indicates how many XA connections share this
+ * underlying connection and transaction. Always one or more.
+ */
+ int count;
+
+
+ /**
+ * True if the transaction has failed due to time out.
+ */
+ boolean timedOut;
+
+
+ /**
+ * True if the transaction has already been prepared.
+ */
+ boolean prepared;
+
+
+ /**
+ * True if the transaction has been prepared and found out to be
+ * read-only. Read-only transactions do not require commit/rollback.
+ */
+ boolean readOnly;
+
+
+}
+
--- /dev/null
+/**
+ * Redistribution and use of this software and associated documentation
+ * ("Software"), with or without modification, are permitted provided
+ * that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain copyright
+ * statements and notices. Redistributions must also contain a
+ * copy of this document.
+ *
+ * 2. Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and the
+ * following disclaimer in the documentation and/or other
+ * materials provided with the distribution.
+ *
+ * 3. The name "Exolab" must not be used to endorse or promote
+ * products derived from this Software without prior written
+ * permission of Exoffice Technologies. For written permission,
+ *
+ * 4. Products derived from this Software may not be called "Exolab"
+ * nor may "Exolab" appear in their names without prior written
+ * permission of Exoffice Technologies. Exolab is a registered
+ * trademark of Exoffice Technologies.
+ *
+ * 5. Due credit should be given to the Exolab Project
+ * (http://www.exolab.org/).
+ *
+ * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
+ * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright 1999 (C) Exoffice Technologies Inc. All Rights Reserved.
+ *
+ * $Id: XAConnectionImpl.java,v 1.1 2000/04/17 20:07:56 peter Exp $
+ */
+
+
+package org.postgresql.xa;
+
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.util.Vector;
+import javax.sql.XAConnection;
+import javax.sql.PooledConnection;
+import javax.sql.ConnectionEvent;
+import javax.sql.ConnectionEventListener;
+import javax.transaction.RollbackException;
+import javax.transaction.xa.XAResource;
+import javax.transaction.xa.Xid;
+import javax.transaction.xa.XAException;
+
+
+/**
+ * Implements an X/A connection that can be pooled and managed from
+ * inside a transaction monitor. This is the XA connection returned
+ * to the application server from the {@link XADataSourceImpl} and
+ * will be used to obtain {@link ClientConnection} for the
+ * application.
+ * If the transaction is managed through the JDBC interface, this
+ * connection will reference the underlying JDBC connection directly.
+ * If this resource is enlisted with a global transaction through
+ * the {@link XAResource} interface, it will reference a transactional
+ * connection, or {@link TxConnection}. Such a connection may be
+ * shared by two or more XA connections enlisted with the same
+ * transaction.
+ *
+ *
+ * @version 1.0
+ * @see ClientConnection
+ * @see ConnectionEventListener
+ * @see TxConnection
+ */
+public final class XAConnectionImpl
+ implements XAConnection, XAResource
+{
+
+
+ /**
+ * This is the underlying JDBC connection represented
+ * by this pooled connection. This variable may initially be null,
+ * in which case {@link #getUnderlying} will return a new
+ * connection and set this variable. This variable is mutually
+ * exclusive with {@link #_txConn} and is always null for
+ * connections inside a transaction.
+ */
+ Connection _underlying;
+
+
+ /**
+ * If this connection is part of a global transaction, this
+ * object identifies the transaction. The transaction's
+ * underlying JDBC connection is exposed through this object and
+ * {@link #_underlying} is null. If this connection is closed,
+ * then the connection has been timedout. Commit/rollback will
+ * always set this variable to null.
+ */
+ private TxConnection _txConn;
+
+
+ /**
+ * The client connection last handed to the application. If the
+ * application calls {@link #getConnection} again, we should hand
+ * out a new client connection and render the previous one closed.
+ */
+ // No longer in use, see _clientId
+ //private ClientConnection _clientConn;
+
+
+ /**
+ * An event listener can be registered and notified when the
+ * client connection has been closed by the application or a
+ * fatal error rendered it unuseable.
+ */
+ private ConnectionEventListener _listener;
+
+
+ /**
+ * The resource manager is used to share connections within the
+ * same transaction.
+ */
+ private XADataSourceImpl _resManager;
+
+
+ /**
+ * This is an identifier we hand to the client connection when we
+ * create it. When the client connection asks for the underlying
+ * connection, we compare the identifiers. If since that point we
+ * created a new client connection, we regard an old client
+ * connection as discarded and do not hand it the underlying
+ * connection.
+ * Previously, when a new client connection was created, we used
+ * a reference to the old one to terminate it. This proved to
+ * not work well, since the client connection could never be
+ * finalized.
+ */
+ private int _clientId = 1;
+
+
+ /**
+ * Construct a new XA/pooled connection with the underlying JDBC
+ * connection suitable for this driver only. This is a one to one
+ * mapping between this connection and the underlying connection.
+ * The underlying connection is only provided for pooled
+ * connections. XA connections are suspect of being enlisted with
+ * a global transaction which might already bear an underlying
+ * connection. If not, one will be created later on.
+ */
+ XAConnectionImpl( XADataSourceImpl resManager,
+ Connection underlying )
+ {
+ _underlying = underlying;
+ _resManager = resManager;
+ }
+
+
+ public synchronized void close()
+ throws SQLException
+ {
+ // This is our indication that this connection has been
+ // closed programmatically.
+ if ( _resManager == null )
+ throw new SQLException( "This connection has been closed" );
+
+ // The client connection is no longer useable.
+ /* Deprecated: see _clientId
+ if ( _clientConn != null )
+ _clientConn.terminate();
+ */
+ _clientId = -1;
+
+ // The underlying connection is closed and this connection
+ // is no longer useable. This method can be called any number
+ // of times (e.g. we use it in finalizer). We do not handle
+ // transactions, we just kill the connection.
+ try {
+ if ( _underlying != null ) {
+ _underlying.commit();
+ _underlying.close();
+ } else if ( _txConn != null ) {
+ try {
+ end( _txConn.xid, TMSUCCESS );
+ } catch ( XAException except ) { }
+ }
+ } finally {
+ _resManager = null;
+ _underlying = null;
+ _txConn = null;
+ _listener = null;
+ }
+ }
+
+
+ public XAResource getXAResource()
+ {
+ // The connection acts as it's own resource manager
+ return this;
+ }
+
+
+ public synchronized void addConnectionEventListener( ConnectionEventListener listener )
+ {
+ if ( listener == null )
+ throw new NullPointerException( "XAConnection: Argument 'listener' is null" );
+ if ( _listener != null )
+ throw new IllegalStateException( "XAConnection: Only one listener supported per connection" );
+ _listener = listener;
+ }
+
+
+ public synchronized void removeConnectionEventListener( ConnectionEventListener listener )
+ {
+ if ( listener == null )
+ throw new NullPointerException( "XAConnection: Argument 'listener' is null" );
+ if ( _listener == null || _listener != listener )
+ throw new IllegalStateException( "XAConnection: Listener never registered with this pooled connection" );
+ _listener = null;
+ }
+
+
+ public synchronized java.sql.Connection getConnection()
+ throws SQLException
+ {
+ // If this pooled connection has been closed, throw an exception.
+ if ( _resManager == null )
+ throw new SQLException( "This connection has been closed" );
+
+ // If getConnection() was called before and the underlying
+ // connection was not closed, we take it away from the previous
+ // recieved as per the PooledConnection design.
+ /* Deprecated: see _clientId
+ if ( _clientConn != null )
+ _clientConn.terminate();
+ */
+
+ // If we are handling an underlying connection, we commit the
+ // old transaction and are ready to work for a new one.
+ // If we are part of a global transaction we hope that end/
+ // start were called properly, but we're not longer in that
+ // transaction.
+ if ( _underlying != null ) {
+ try {
+ _underlying.commit();
+ } catch ( SQLException except ) {
+ ConnectionEvent event;
+
+ if ( _listener != null ) {
+ event = new ConnectionEvent( this, except );
+ _listener.connectionErrorOccurred( event );
+ }
+ }
+ }
+
+ // Create a new ClientConnection which will be returned to the
+ // application. The ClientConnection cannot be closed directly
+ // and cannot manage it's own transactions.
+ /* Deprecated: see _clientId
+ _clientConn = new ClientConnection( this );
+ return _clientConn;
+ */
+ return new ClientConnection( this, ++_clientId );
+ }
+
+
+ /**
+ * Called by {@link ClientConnection} to notify that the application
+ * has attempted to close the connection. After this call, the client
+ * connection is no longer useable and this pooled connection can be
+ * reused. The event listener is notified immediately.
+ *
+ * @param clientId The {@link ClientConnection} identifier
+ */
+ synchronized void notifyClose( int clientId )
+ {
+ ConnectionEvent event;
+
+ // ClientConnection has been closed, we dissociated it from
+ // the underlying connection and notify any listener that this
+ // pooled connection can be reused.
+ /* Deprecated: see clientId
+ _clientConn.terminate();
+ _clientConn = null;
+ */
+ // We have to expect being called by a ClientConnection that we
+ // no longer regard as valid. That's acceptable, we just ignore.
+ if ( clientId != _clientId )
+ return;
+
+ // If we are handling an underlying connection, we commit the
+ // old transaction and are ready to work for a new one.
+ // If we are part of a global transaction we hope that end/
+ // start were called properly.
+ if ( _underlying != null ) {
+ try {
+ _underlying.commit();
+ } catch ( SQLException except ) {
+ if ( _listener != null ) {
+ event = new ConnectionEvent( this, except );
+ _listener.connectionErrorOccurred( event );
+ }
+ return;
+ }
+ }
+ // Notify the listener.
+ if ( _listener != null ) {
+ event = new ConnectionEvent( this );
+ _listener.connectionClosed( event );
+ }
+ }
+
+
+ /**
+ * Called by {@link ClientConnection} to notify that an error
+ * occured with the underlying connection. If the error is
+ * critical, the underlying connection is closed and the listener
+ * is notified.
+ *
+ * @param clientId The {@link ClientConnection} identifier
+ * @param except The exception raised by the underlying connection
+ */
+ synchronized void notifyError( int clientId, SQLException except )
+ {
+ ConnectionEvent event;
+
+ if ( clientId != _clientId )
+ return;
+
+ // If the connection is not two-phase commit we cannot determine
+ // whether the error is critical, we just return. If the connection
+ // is two phase commit, but the error is not critical, we return.
+ if ( _underlying != null ) {
+ if ( ! ( _underlying instanceof TwoPhaseConnection ) ||
+ ! ( (TwoPhaseConnection) _underlying ).isCriticalError( except ) )
+ return;
+ if ( _txConn.conn == null ||
+ ! ( _txConn.conn instanceof TwoPhaseConnection ) ||
+ ! ( (TwoPhaseConnection) _txConn.conn ).isCriticalError( except ) )
+ return;
+ }
+
+ // The client connection is no longer useable, the underlying
+ // connection (if used) is closed, the TxConnection (if used)
+ // is rolledback and this connection dies (but close() may
+ // still be called).
+ ++_clientId;
+ if ( _underlying != null ) {
+ try {
+ _underlying.close();
+ } catch ( SQLException e2 ) {
+ // Ignore that, we know there's an error.
+ }
+ _underlying = null;
+ } else if ( _txConn != null ) {
+ try {
+ end( _txConn.xid, TMFAIL );
+ } catch ( XAException e2 ) {
+ // Ignore that, we know there's an error.
+ }
+ _txConn = null;
+ }
+
+ // Notify the listener.
+ if ( _listener != null ) {
+ event = new ConnectionEvent( this, except );
+ _listener.connectionErrorOccurred( event );
+ }
+ }
+
+
+ protected void finalize()
+ throws Throwable
+ {
+ // We are no longer referenced by anyone (including the
+ // connection pool). Time to close down.
+ close();
+ }
+
+
+ public String toString()
+ {
+ if ( _underlying != null )
+ return "XAConnection: " + _underlying;
+ else
+ return "XAConnection: unused";
+ }
+
+
+ public synchronized void start( Xid xid, int flags )
+ throws XAException
+ {
+ // General checks.
+ if ( xid == null )
+ throw new XAException( XAException.XAER_INVAL );
+ if ( _txConn != null )
+ throw new XAException( XAException.XAER_OUTSIDE );
+
+ synchronized ( _resManager ) {
+ if ( flags == TMNOFLAGS ) {
+ // Starting a new transaction. First, make sure it is
+ // not shared with any other connection (need to join
+ // for that).
+ if ( _resManager.getTxConnection( xid ) != null )
+ throw new XAException( XAException.XAER_DUPID );
+
+ // Create a new TxConnection to describe this
+ // connection in the context of a transaction and
+ // register it with the resource manager so it can
+ // be shared.
+ try {
+ _txConn = new TxConnection();
+ if ( _underlying != null ) {
+ _txConn.conn = _underlying;
+ _underlying = null;
+ } else
+ _txConn.conn = _resManager.newConnection();
+ _txConn.xid = xid;
+ _txConn.count = 1;
+ _txConn.started = System.currentTimeMillis();
+ _txConn.timeout = _txConn.started + ( _resManager.getTransactionTimeout() * 1000 );
+ _resManager.setTxConnection( xid, _txConn );
+ } catch ( SQLException except ) {
+ // If error occured at this point, we can only
+ // report it as resource manager error.
+ if ( _resManager.getLogWriter() != null )
+ _resManager.getLogWriter().println( "XAConnection: failed to begin a transaction: " + except );
+ throw new XAException( XAException.XAER_RMERR );
+ }
+
+ try {
+ _txConn.conn.setAutoCommit( false );
+ try {
+ if ( _resManager.isolationLevel() != Connection.TRANSACTION_NONE )
+ _txConn.conn.setTransactionIsolation( _resManager.isolationLevel() );
+ } catch ( SQLException e ) {
+ // The underlying driver might not support this
+ // isolation level that we use by default.
+ }
+ if ( _txConn.conn instanceof TwoPhaseConnection )
+ ( (TwoPhaseConnection) _txConn.conn ).enableSQLTransactions( false );
+ } catch ( SQLException except ) {
+ // If error occured at this point, we can only
+ // report it as resource manager error.
+ if ( _resManager.getLogWriter() != null )
+ _resManager.getLogWriter().println( "XAConnection: failed to begin a transaction: " + except );
+ throw new XAException( XAException.XAER_RMERR );
+ }
+ } else if ( flags == TMJOIN || flags == TMRESUME ) {
+ // We are joining another transaction with an
+ // existing TxConnection.
+ _txConn = _resManager.getTxConnection( xid );
+ if ( _txConn == null )
+ throw new XAException( XAException.XAER_INVAL );
+
+ // Update the number of XAConnections sharing this
+ // transaction connection.
+ if ( flags == TMJOIN && _txConn.count == 0 )
+ throw new XAException( XAException.XAER_PROTO );
+ ++_txConn.count;
+
+ // If we already have an underlying connection (as we can
+ // expect to), we should release that underlying connection
+ // and make it available to the resource manager.
+ if ( _underlying != null ) {
+ _resManager.releaseConnection( _underlying );
+ _underlying = null;
+ }
+ } else
+ // No other flags supported in start().
+ throw new XAException( XAException.XAER_INVAL );
+ }
+ }
+
+
+ public synchronized void end( Xid xid, int flags )
+ throws XAException
+ {
+ // General checks.
+ if ( xid == null )
+ throw new XAException( XAException.XAER_INVAL );
+ // Note: we could get end with success or failure even it
+ // we were previously excluded from the transaction.
+ if ( _txConn == null && flags == TMSUSPEND )
+ throw new XAException( XAException.XAER_NOTA );
+
+ synchronized ( _resManager ) {
+ if ( flags == TMSUCCESS || flags == TMFAIL) {
+ // We are now leaving a transaction we started or
+ // joined before. We can expect any of prepare/
+ // commit/rollback to be called next, so TxConnection
+ // is still valid.
+
+ // If we were suspended from the transaction, we'll
+ // join it for the duration of this operation.
+ // Make sure the reference count reaches zero by the
+ // time we get to prepare.
+ if ( _txConn == null ) {
+ _txConn = _resManager.getTxConnection( xid );
+ if ( _txConn == null )
+ throw new XAException( XAException.XAER_NOTA );
+ } else {
+ if ( _txConn.xid != null && ! _txConn.xid.equals( xid ) )
+ throw new XAException( XAException.XAER_NOTA );
+ --_txConn.count;
+ }
+
+ // If transaction failed, we can rollback the
+ // transaction and release the underlying connection.
+ // We can expect all other resources to recieved the
+ // same end notification. We don't expect forget to happen.
+ if ( flags == TMFAIL && _txConn.conn != null ) {
+ try {
+ if ( _txConn.conn instanceof TwoPhaseConnection )
+ ( (TwoPhaseConnection) _txConn.conn ).enableSQLTransactions( true );
+ _txConn.conn.rollback();
+ _resManager.releaseConnection( _txConn.conn );
+ } catch ( SQLException except ) {
+ // There is a problem with the underlying
+ // connection, but it was not added to the poll.
+ }
+ _resManager.setTxConnection( _txConn.xid, null );
+ _txConn.conn = null;
+ _txConn.xid = null;
+ }
+
+ if ( flags == TMSUCCESS) {
+ // We should be looking for a new transaction.
+ // Next thing we might be participating in a new
+ // transaction while the current one is being
+ // rolled back.
+ _txConn = null;
+ }
+ } else if ( flags == TMSUSPEND ) {
+ // We no longer take part in this transaction.
+ // Possibly we'll be asked to resume later on, but
+ // right now we have to forget about the transaction
+ // and the underlying connection.
+ --_txConn.count;
+ _txConn = null;
+ } else
+ // No other flags supported in end().
+ throw new XAException( XAException.XAER_INVAL );
+ }
+ }
+
+
+ public synchronized void forget( Xid xid )
+ throws XAException
+ {
+ TxConnection txConn;
+
+ // General checks.
+ if ( xid == null )
+ throw new XAException( XAException.XAER_INVAL );
+ synchronized ( _resManager ) {
+ // We have to forget about the transaction, meaning the
+ // transaction no longer exists for this or any other
+ // connection. We might be called multiple times.
+ txConn = _resManager.setTxConnection( xid, null );
+ if ( _txConn == txConn )
+ _txConn = null;
+ if ( txConn != null ) {
+ if ( txConn.conn != null ) {
+ _resManager.releaseConnection( txConn.conn );
+ txConn.conn = null;
+ }
+ txConn.xid = null;
+ }
+ }
+ }
+
+
+ public synchronized int prepare( Xid xid )
+ throws XAException
+ {
+ TxConnection txConn;
+
+ // General checks.
+ if ( xid == null )
+ throw new XAException( XAException.XAER_INVAL );
+
+ synchronized ( _resManager ) {
+ // Technically, prepare may be called for any connection,
+ // not just this one.
+ txConn = _resManager.getTxConnection( xid );
+ if ( txConn == null )
+ throw new XAException( XAException.XAER_NOTA );
+
+ // This is an error and should never happen. All other
+ // parties in the transaction should have left it before.
+ if ( txConn.count > 0 )
+ throw new XAException( XAException.XAER_PROTO );
+
+ // If the transaction failed, we have to force a rollback.
+ // We track the case of failure due to a timeout.
+ if ( txConn.timedOut )
+ throw new XAException( XAException.XA_RBTIMEOUT );
+ if ( txConn.conn == null )
+ throw new XAException( XAException.XA_RBROLLBACK );
+
+ // Since there is no preparation mechanism in a generic
+ // JDBC driver, we only test for read-only transaction
+ // but do not commit at this point.
+ try {
+ txConn.prepared = true;
+ if ( txConn.conn instanceof TwoPhaseConnection ) {
+ // For 2pc connection we ask it to prepare and determine
+ // whether it's commiting or read-only. If a rollback
+ // exception happens, we report it.
+ try {
+ if ( ( (TwoPhaseConnection) txConn.conn ).prepare() )
+ return XA_OK;
+ else {
+ txConn.readOnly = true;
+ return XA_RDONLY;
+ }
+ } catch ( SQLException except ) {
+ throw new XAException( XAException.XA_RBROLLBACK );
+ }
+ } else {
+ // For standard connection we cannot prepare, we can
+ // only guess if it's read only.
+ if ( txConn.conn.isReadOnly() ) {
+ txConn.readOnly = true;
+ return XA_RDONLY;
+ }
+ return XA_OK;
+ }
+ } catch ( SQLException except ) {
+ try {
+ // Fatal error in the connection, kill it.
+ txConn.conn.close();
+ } catch ( SQLException e ) { }
+ txConn.conn = null;
+ if ( _resManager.getLogWriter() != null )
+ _resManager.getLogWriter().println( "XAConnection: failed to commit a transaction: " + except );
+ // If we cannot commit the transaction, force a rollback.
+ throw new XAException( XAException.XA_RBROLLBACK );
+ }
+ }
+ }
+
+
+ public Xid[] recover( int flags )
+ throws XAException
+ {
+ synchronized ( _resManager ) {
+ return _resManager.getTxRecover();
+ }
+ }
+
+
+ public synchronized void commit( Xid xid, boolean onePhase )
+ throws XAException
+ {
+ TxConnection txConn;
+
+ // General checks.
+ if ( xid == null )
+ throw new XAException( XAException.XAER_INVAL );
+
+ synchronized ( _resManager ) {
+ // Technically, commit may be called for any connection,
+ // not just this one.
+ txConn = _resManager.getTxConnection( xid );
+ if ( txConn == null )
+ throw new XAException( XAException.XAER_NOTA );
+
+ // If the transaction failed, we have to force
+ // a rollback.
+ if ( txConn.conn == null )
+ throw new XAException( XAException.XA_RBROLLBACK );
+
+ // If connection has been prepared and is read-only,
+ // nothing to do at this stage.
+ if ( txConn.readOnly )
+ return;
+
+ // This must be a one-phase commite, or the connection
+ // should have been prepared before.
+ if ( onePhase || txConn.prepared ) {
+ try {
+ // Prevent multiple commit attempts.
+ txConn.readOnly = true;
+ if ( txConn.conn instanceof TwoPhaseConnection )
+ ( (TwoPhaseConnection) txConn.conn ).enableSQLTransactions( true );
+ txConn.conn.commit();
+ } catch ( SQLException except ) {
+ try {
+ // Unknown error in the connection, better kill it.
+ txConn.conn.close();
+ } catch ( SQLException e ) { }
+ txConn.conn = null;
+ if ( _resManager.getLogWriter() != null )
+ _resManager.getLogWriter().println( "XAConnection: failed to commit a transaction: " + except );
+ // If we cannot commit the transaction, a heuristic tollback.
+ throw new XAException( XAException.XA_HEURRB );
+ }
+ } else {
+ // 2pc we should have prepared before.
+ if ( ! txConn.prepared )
+ throw new XAException( XAException.XAER_PROTO );
+ }
+ }
+ }
+
+
+ public synchronized void rollback( Xid xid )
+ throws XAException
+ {
+ TxConnection txConn;
+
+
+ // General checks.
+ if ( xid == null )
+ throw new XAException( XAException.XAER_INVAL );
+
+ synchronized ( _resManager ) {
+ // Technically, rollback may be called for any connection,
+ // not just this one.
+ txConn = _resManager.getTxConnection( xid );
+ if ( txConn == null )
+ throw new XAException( XAException.XAER_NOTA );
+
+ // If connection has been prepared and is read-only,
+ // nothing to do at this stage. If connection has
+ // been terminated any other way, nothing to do
+ // either.
+ if ( txConn.readOnly || txConn.conn == null )
+ return;
+
+ try {
+ txConn.prepared = false;
+ if ( txConn.conn instanceof TwoPhaseConnection )
+ ( (TwoPhaseConnection) txConn.conn ).enableSQLTransactions( true );
+ txConn.conn.rollback();
+ } catch ( SQLException except ) {
+ try {
+ // Unknown error in the connection, better kill it.
+ txConn.conn.close();
+ } catch ( SQLException e ) { }
+ txConn.conn = null;
+ if ( _resManager.getLogWriter() != null )
+ _resManager.getLogWriter().println( "XAConnection: failed to rollback a transaction: " + except );
+ // If we cannot commit the transaction, a heuristic tollback.
+ throw new XAException( XAException.XA_RBROLLBACK );
+ } finally {
+ forget( xid );
+ }
+ }
+ }
+
+
+ public synchronized boolean isSameRM( XAResource xaRes )
+ throws XAException
+ {
+ // Two resource managers are equal if they produce equivalent
+ // connection (i.e. same database, same user). If the two are
+ // equivalent they would share a transaction by joining.
+ if ( xaRes == null || ! ( xaRes instanceof XAConnectionImpl ) )
+ return false;
+ if ( _resManager.equals( ( (XAConnectionImpl) xaRes )._resManager ) )
+ return true;
+ return false;
+ }
+
+
+ public synchronized boolean setTransactionTimeout( int seconds )
+ throws XAException
+ {
+ if ( seconds < 0 )
+ throw new XAException( XAException.XAER_INVAL );
+ // Zero resets to the default for all transactions.
+ if ( seconds == 0 )
+ seconds = _resManager.getTransactionTimeout();
+ // If a transaction has started, change it's timeout to the new value.
+ if ( _txConn != null ) {
+ _txConn.timeout = _txConn.started + ( seconds * 1000 );
+ return true;
+ }
+ return false;
+ }
+
+
+ public int getTransactionTimeout()
+ {
+ long timeout;
+
+ if ( _txConn == null )
+ return 0;
+ return (int) ( _txConn.timeout - _txConn.started ) / 1000;
+ }
+
+
+ /**
+ * Returns true if this connection is inside a global transaction.
+ * If the connection is inside a global transaction it will not
+ * allow commit/rollback directly from the {@link
+ * java.sql.Connection} interface.
+ */
+ boolean insideGlobalTx()
+ {
+ return ( _txConn != null );
+ }
+
+
+ /**
+ * Called to obtain the underlying connections. If this connection
+ * is part of a transaction, the transction's underlying connection
+ * is returned, or an exception is thrown if the connection was
+ * terminated due to timeout. If this connection is not part of a
+ * transaction, a non-transactional connection is returned.
+ *
+ * @param clientId The {@link ClientConnection} identifier
+ */
+ Connection getUnderlying( int clientId )
+ throws SQLException
+ {
+ // If we were notified of the client closing, or have been
+ // requested to have a new client connection since then,
+ // the client id will not match to that of the caller.
+ // We use that to decide that the caller has been closed.
+ if ( clientId != _clientId )
+ throw new SQLException( "This application connection has been closed" );
+
+ if ( _txConn != null ) {
+ if ( _txConn.timedOut )
+ throw new SQLException( "The transaction has timed out and has been rolledback and closed" );
+ if ( _txConn.conn == null )
+ throw new SQLException( "The transaction has been terminated and this connection has been closed" );
+ return _txConn.conn;
+ }
+ if ( _underlying == null ) {
+ _underlying = _resManager.newConnection();
+ _underlying.setAutoCommit( true );
+ }
+ return _underlying;
+ }
+
+
+}
+
+
+
--- /dev/null
+/**
+ * Redistribution and use of this software and associated documentation
+ * ("Software"), with or without modification, are permitted provided
+ * that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain copyright
+ * statements and notices. Redistributions must also contain a
+ * copy of this document.
+ *
+ * 2. Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and the
+ * following disclaimer in the documentation and/or other
+ * materials provided with the distribution.
+ *
+ * 3. The name "Exolab" must not be used to endorse or promote
+ * products derived from this Software without prior written
+ * permission of Exoffice Technologies. For written permission,
+ *
+ * 4. Products derived from this Software may not be called "Exolab"
+ * nor may "Exolab" appear in their names without prior written
+ * permission of Exoffice Technologies. Exolab is a registered
+ * trademark of Exoffice Technologies.
+ *
+ * 5. Due credit should be given to the Exolab Project
+ * (http://www.exolab.org/).
+ *
+ * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
+ * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright 1999 (C) Exoffice Technologies Inc. All Rights Reserved.
+ *
+ * $Id: XADataSourceImpl.java,v 1.1 2000/04/17 20:07:56 peter Exp $
+ */
+
+
+package org.postgresql.xa;
+
+
+import java.io.Serializable;
+import java.io.PrintWriter;
+import java.util.Hashtable;
+import java.util.Vector;
+import java.util.Stack;
+import java.util.Enumeration;
+import java.sql.Connection;
+import java.sql.SQLException;
+
+import javax.sql.DataSource;
+import javax.sql.PooledConnection;
+import javax.sql.ConnectionPoolDataSource;
+import javax.sql.XAConnection;
+import javax.sql.XADataSource;
+import javax.transaction.xa.Xid;
+
+
+
+/**
+ * Implements a JDBC 2.0 {@link XADataSource} for any JDBC driver
+ * with JNDI persistance support. The base implementation is actually
+ * provided by a different {@link DataSource} class; although this is
+ * the super class, it only provides the pooling and XA specific
+ * implementation.
+ *
+ *
+ * @version 1.0
+ */
+public abstract class XADataSourceImpl
+ implements DataSource, ConnectionPoolDataSource,
+ XADataSource, Serializable, Runnable
+{
+
+
+ /**
+ * Maps underlying JDBC connections into global transaction Xids.
+ */
+ private transient Hashtable _txConnections = new Hashtable();
+
+
+ /**
+ * This is a pool of free underlying JDBC connections. If two
+ * XA connections are used in the same transaction, the second
+ * one will make its underlying JDBC connection available to
+ * the pool. This is not a real connection pool, only a marginal
+ * efficiency solution for dealing with shared transactions.
+ */
+ private transient Stack _pool = new Stack();
+
+
+ /**
+ * A background deamon thread terminating connections that have
+ * timed out.
+ */
+ private transient Thread _background;
+
+
+ /**
+ * The default timeout for all new transactions.
+ */
+ private int _txTimeout = DEFAULT_TX_TIMEOUT;
+
+
+ /**
+ * The default timeout for all new transactions is 10 seconds.
+ */
+ public final static int DEFAULT_TX_TIMEOUT = 10;
+
+
+
+
+ /**
+ * Implementation details:
+ * If two XAConnections are associated with the same transaction
+ * (one with a start the other with a join) they must use the
+ * same underlying JDBC connection. They lookup the underlying
+ * JDBC connection based on the transaction's Xid in the
+ * originating XADataSource.
+ *
+ * Currently the XADataSource must be the exact same object,
+ * this should be changed so all XADataSources that are equal
+ * share a table of all enlisted connections
+ *
+ * To test is two connections should fall under the same
+ * transaction we match the resource managers by comparing the
+ * database/user they fall under using a comparison of the
+ * XADataSource properties.
+ */
+
+
+ public XADataSourceImpl()
+ {
+ super();
+
+ // Create a background thread that will track transactions
+ // that timeout, abort them and release the underlying
+ // connections to the pool.
+ _background = new Thread( this, "XADataSource Timeout Daemon" );
+ _background.setPriority( Thread.MIN_PRIORITY );
+ _background.setDaemon( true );
+ _background.start();
+ }
+
+
+ public XAConnection getXAConnection()
+ throws SQLException
+ {
+ // Construct a new XAConnection with no underlying connection.
+ // When a JDBC method requires an underlying connection, one
+ // will be created. We don't create the underlying connection
+ // beforehand, as it might be coming from an existing
+ // transaction.
+ return new XAConnectionImpl( this, null );
+ }
+
+
+ public XAConnection getXAConnection( String user, String password )
+ throws SQLException
+ {
+ // Since we create the connection on-demand with newConnection
+ // or obtain it from a transaction, we cannot support XA
+ // connections with a caller specified user name.
+ throw new SQLException( "XAConnection does not support connections with caller specified user name" );
+ }
+
+
+ public PooledConnection getPooledConnection()
+ throws SQLException
+ {
+ // Construct a new pooled connection and an underlying JDBC
+ // connection to go along with it.
+ return new XAConnectionImpl( this, getConnection() );
+ }
+
+
+ public PooledConnection getPooledConnection( String user, String password )
+ throws SQLException
+ {
+ // Construct a new pooled connection and an underlying JDBC
+ // connection to go along with it.
+ return new XAConnectionImpl( this, getConnection( user, password ) );
+ }
+
+
+ /**
+ * Returns the default timeout for all transactions.
+ */
+ public int getTransactionTimeout()
+ {
+ return _txTimeout;
+ }
+
+
+ /**
+ * This method is defined in the interface and implemented in the
+ * derived class, we re-define it just to make sure it does not
+ * throw an {@link SQLException} and that we do not need to
+ * catch one.
+ */
+ public abstract java.io.PrintWriter getLogWriter();
+
+
+ /**
+ * Sets the default timeout for all transactions. The timeout is
+ * specified in seconds. Use zero for the default timeout. Calling
+ * this method does not affect transactions in progress.
+ *
+ * @param seconds The timeout in seconds
+ */
+ public void setTransactionTimeout( int seconds )
+ {
+ if ( seconds <= 0 )
+ _txTimeout = DEFAULT_TX_TIMEOUT;
+ else
+ _txTimeout = seconds;
+ _background.interrupt();
+ }
+
+
+ /**
+ * Returns an underlying connection for the global transaction,
+ * if one has been associated before.
+ *
+ * @param xid The transaction Xid
+ * @return A connection associated with that transaction, or null
+ */
+ TxConnection getTxConnection( Xid xid )
+ {
+ return (TxConnection) _txConnections.get( xid );
+ }
+
+
+ /**
+ * Associates the global transaction with an underlying connection,
+ * or dissociate it when null is passed.
+ *
+ * @param xid The transaction Xid
+ * @param conn The connection to associate, null to dissociate
+ */
+ TxConnection setTxConnection( Xid xid, TxConnection txConn )
+ {
+ if ( txConn == null )
+ return (TxConnection) _txConnections.remove( xid );
+ else
+ return (TxConnection) _txConnections.put( xid, txConn );
+ }
+
+
+ /**
+ * Release an unused connection back to the pool. If an XA
+ * connection has been asked to join an existing transaction,
+ * it will no longer use it's own connection and make it available
+ * to newly created connections.
+ *
+ * @param conn An open connection that is no longer in use
+ */
+ void releaseConnection( Connection conn )
+ {
+ _pool.push( conn );
+ }
+
+
+ /**
+ * Creates a new underlying connection. Used by XA connection
+ * that lost it's underlying connection when joining a
+ * transaction and is now asked to produce a new connection.
+ *
+ * @return An open connection ready for use
+ * @throws SQLException An error occured trying to open
+ * a connection
+ */
+ Connection newConnection()
+ throws SQLException
+ {
+ Connection conn;
+
+ // Check in the pool first.
+ if ( ! _pool.empty() ) {
+ conn = (Connection) _pool.pop();
+ return conn;
+ }
+ return getConnection();
+ }
+
+
+ /**
+ * XXX Not fully implemented yet and no code to really
+ * test it.
+ */
+ Xid[] getTxRecover()
+ {
+ Vector list;
+ Enumeration enum;
+ TxConnection txConn;
+
+ list = new Vector();
+ enum = _txConnections.elements();
+ while ( enum.hasMoreElements() ) {
+ txConn = (TxConnection) enum.nextElement();
+ if ( txConn.conn != null && txConn.prepared )
+ list.add( txConn.xid );
+ }
+ return (Xid[]) list.toArray();
+ }
+
+
+ /**
+ * Returns the transaction isolation level to use with all newly
+ * created transactions, or {@link Connection#TRANSACTION_NONE}
+ * if using the driver's default isolation level.
+ */
+ public int isolationLevel()
+ {
+ return Connection.TRANSACTION_NONE;
+ }
+
+
+ public void run()
+ {
+ Enumeration enum;
+ int reduce;
+ long timeout;
+ TxConnection txConn;
+
+ while ( true ) {
+ // Go to sleep for the duration of a transaction
+ // timeout. This mean transactions will timeout on average
+ // at _txTimeout * 1.5.
+ try {
+ Thread.sleep( _txTimeout * 1000 );
+ } catch ( InterruptedException except ) {
+ }
+
+ try {
+ // Check to see if there are any pooled connections
+ // we can release. We release 10% of the pooled
+ // connections each time, so in a heavy loaded
+ // environment we don't get to release that many, but
+ // as load goes down we do. These are not actually
+ // pooled connections, but connections that happen to
+ // get in and out of a transaction, not that many.
+ reduce = _pool.size() - ( _pool.size() / 10 ) - 1;
+ if ( reduce >= 0 && _pool.size() > reduce ) {
+ if ( getLogWriter() != null )
+ getLogWriter().println( "DataSource " + toString() +
+ ": Reducing internal connection pool size from " +
+ _pool.size() + " to " + reduce );
+ while ( _pool.size() > reduce ) {
+ try {
+ ( (Connection) _pool.pop() ).close();
+ } catch ( SQLException except ) { }
+ }
+ }
+ } catch ( Exception except ) { }
+
+ // Look for all connections inside a transaction that
+ // should have timed out by now.
+ timeout = System.currentTimeMillis();
+ enum = _txConnections.elements();
+ while ( enum.hasMoreElements() ) {
+ txConn = (TxConnection) enum.nextElement();
+ // If the transaction timed out, we roll it back and
+ // invalidate it, but do not remove it from the transaction
+ // list yet. We wait for the next iteration, minimizing the
+ // chance of a NOTA exception.
+ if ( txConn.conn == null ) {
+ _txConnections.remove( txConn.xid );
+ // Chose not to use an iterator so we must
+ // re-enumerate the list after removing
+ // an element from it.
+ enum = _txConnections.elements();
+ } else if ( txConn.timeout < timeout ) {
+
+ try {
+ Connection underlying;
+
+ synchronized ( txConn ) {
+ if ( txConn.conn == null )
+ continue;
+ if ( getLogWriter() != null )
+ getLogWriter().println( "DataSource " + toString() +
+ ": Transaction timed out and being aborted: " +
+ txConn.xid );
+ // Remove the connection from the transaction
+ // association. XAConnection will now have
+ // no underlying connection and attempt to
+ // create a new one.
+ underlying = txConn.conn;
+ txConn.conn = null;
+ txConn.timedOut = true;
+
+ // Rollback the underlying connection to
+ // abort the transaction and release the
+ // underlying connection to the pool.
+ try {
+ underlying.rollback();
+ releaseConnection( underlying );
+ } catch ( SQLException except ) {
+ if ( getLogWriter() != null )
+ getLogWriter().println( "DataSource " + toString() +
+ ": Error aborting timed out transaction: " + except );
+ try {
+ underlying.close();
+ } catch ( SQLException e2 ) { }
+ }
+ }
+ } catch ( Exception except ) { }
+
+ }
+ }
+ }
+ }
+
+
+
+ public void debug( PrintWriter writer )
+ {
+ Enumeration enum;
+ TxConnection txConn;
+ StringBuffer buffer;
+
+ writer.println( "Debug info for XADataSource:" );
+ enum = _txConnections.elements();
+ if ( ! enum.hasMoreElements() )
+ writer.println( "Empty" );
+ while ( enum.hasMoreElements() ) {
+ buffer = new StringBuffer();
+ txConn = (TxConnection) enum.nextElement();
+ buffer.append( "TxConnection " );
+ if ( txConn.xid != null )
+ buffer.append( txConn.xid );
+ if ( txConn.conn != null )
+ buffer.append( ' ' ).append( txConn.conn );
+ buffer.append( " count: " ).append( txConn.count );
+ if ( txConn.prepared )
+ buffer.append( " prepared" );
+ if ( txConn.timedOut )
+ buffer.append( " timed-out" );
+ if ( txConn.readOnly )
+ buffer.append( " read-only" );
+ writer.println( buffer.toString() );
+ }
+ enum = _pool.elements();
+ while ( enum.hasMoreElements() )
+ writer.println( "Pooled underlying: " + enum.nextElement().toString() );
+ }
+
+
+}
projects / postgresql.git / commitdiff