*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/commands/Attic/creatinh.c,v 1.13 1997/08/21 04:05:22 vadim Exp $
+ * $Header: /cvsroot/pgsql/src/backend/commands/Attic/creatinh.c,v 1.14 1997/08/22 03:03:56 vadim Exp $
*
*-------------------------------------------------------------------------
*/
static int checkAttrExists(char *attributeName,
char *attributeType, List *schema);
-static List *MergeAttributes(List *schema, List *supers);
+static List *MergeAttributes(List *schema, List *supers, List **supconstr);
static void StoreCatalogInheritance(Oid relationId, List *supers);
/* ----------------------------------------------------------------
void
DefineRelation(CreateStmt *stmt)
{
- char *relname = palloc(NAMEDATALEN);
- List *schema = stmt->tableElts;
- int numberOfAttributes;
- Oid relationId;
- char archChar;
- List *inheritList = NULL;
- char *archiveName = NULL;
+ char *relname = palloc(NAMEDATALEN);
+ List *schema = stmt->tableElts;
+ int numberOfAttributes;
+ Oid relationId;
+ char archChar;
+ List *inheritList = NULL;
+ char *archiveName = NULL;
TupleDesc descriptor;
- int heaploc, archloc;
+ List *constraints;
+ int heaploc, archloc;
char* typename = NULL; /* the typename of this relation. not useod for now */
* generate relation schema, including inherited attributes.
* ----------------
*/
- schema = MergeAttributes(schema, inheritList);
+ schema = MergeAttributes(schema, inheritList, &constraints);
+ constraints = nconc (constraints, stmt->constraints);
numberOfAttributes = length(schema);
if (numberOfAttributes <= 0) {
* ----------------
*/
descriptor = BuildDescForRelation(schema, relname);
+
+ if ( constraints != NIL )
+ {
+ List *entry;
+ int nconstr = length (constraints);
+ ConstrCheck *check = (ConstrCheck *) palloc (nconstr * sizeof (ConstrCheck));
+ int ncheck = 0;
+ int i;
+
+ foreach (entry, constraints)
+ {
+ ConstraintDef *cdef = (ConstraintDef *) lfirst (entry);
+
+ if ( cdef->type == CONSTR_CHECK )
+ {
+ if ( cdef->name != NULL )
+ {
+ for (i = 0; i < ncheck; i++)
+ {
+ if ( strcmp (check[i].ccname, cdef->name) == 0 )
+ elog (WARN, "DefineRelation: name (%s) of CHECK constraint duplicated", cdef->name);
+ }
+ check[ncheck].ccname = cdef->name;
+ }
+ else
+ {
+ check[ncheck].ccname = (char*) palloc (NAMEDATALEN);
+ sprintf (check[ncheck].ccname, "$%d", ncheck + 1);
+ }
+ check[ncheck].ccbin = NULL;
+ check[ncheck].ccsrc = (char*) cdef->def;
+ ncheck++;
+ }
+ }
+ if ( ncheck > 0 )
+ {
+ if ( ncheck < nconstr )
+ check = (ConstrCheck *) repalloc (check, ncheck * sizeof (ConstrCheck));
+ if ( descriptor->constr == NULL )
+ {
+ descriptor->constr = (TupleConstr *) palloc(sizeof(TupleConstr));
+ descriptor->constr->num_defval = 0;
+ descriptor->constr->has_not_null = false;
+ }
+ descriptor->constr->num_check = ncheck;
+ descriptor->constr->check = check;
+ }
+ }
+
relationId = heap_create(relname,
typename,
archChar,
StoreCatalogInheritance(relationId, inheritList);
- /* ----------------
+ /*
* create an archive relation if necessary
- * ----------------
*/
- if (archChar != 'n') {
+ if (archChar != 'n')
+ {
+ TupleDesc tupdesc;
/*
* Need to create an archive relation for this heap relation.
* We cobble up the command by hand, and increment the command
CommandCounterIncrement();
archiveName = MakeArchiveName(relationId);
- relationId = heap_create(archiveName,
- typename,
- 'n', /* archive isn't archived */
- archloc,
- descriptor);
+ tupdesc = CreateTupleDescCopy (descriptor); /* get rid of constraints */
+ (void) heap_create(archiveName,
+ typename,
+ 'n', /* archive isn't archived */
+ archloc,
+ tupdesc);
+ FreeTupleDesc (tupdesc);
+ FreeTupleDesc (descriptor);
pfree(archiveName);
}
}
* stud_emp {7:percent}
*/
static List *
-MergeAttributes(List *schema, List *supers)
+MergeAttributes(List *schema, List *supers, List **supconstr)
{
List *entry;
List *inhSchema = NIL;
+ List *constraints = NIL;
/*
* Validates that there are no duplications.
List *partialResult = NIL;
AttrNumber attrno;
TupleDesc tupleDesc;
+ TupleConstr *constr;
relation = heap_openr(name);
if (relation==NULL) {
name);
}
tupleDesc = RelationGetTupleDescriptor(relation);
+ constr = tupleDesc->constr;
for (attrno = relation->rd_rel->relnatts - 1; attrno >= 0; attrno--) {
AttributeTupleForm attribute = tupleDesc->attrs[attrno];
char *attributeName;
char *attributeType;
- TupleConstr constraints;
HeapTuple tuple;
ColumnDef *def;
TypeName *typename;
* form name, type and constraints
*/
attributeName = (attribute->attname).data;
- constraints.has_not_null = attribute->attnotnull;
tuple =
SearchSysCacheTuple(TYPOID,
ObjectIdGetDatum(attribute->atttypid),
def->colname = pstrdup(attributeName);
typename->name = pstrdup(attributeType);
def->typename = typename;
- def->is_not_null = constraints.has_not_null;
+ def->is_not_null = attribute->attnotnull;
+ def->defval = NULL;
+ if ( attribute->atthasdef )
+ {
+ AttrDefault *attrdef = constr->defval;
+ int i;
+
+ Assert ( constr != NULL && constr->num_defval > 0 );
+
+ for (i = 0; i < constr->num_defval; i++)
+ {
+ if ( attrdef[i].adnum != attrno + 1 )
+ continue;
+ def->defval = pstrdup (attrdef[i].adsrc);
+ break;
+ }
+ Assert ( def->defval != NULL );
+ }
partialResult = lcons(def, partialResult);
}
+ if ( constr && constr->num_check > 0 )
+ {
+ ConstrCheck *check = constr->check;
+ int i;
+
+ for (i = 0; i < constr->num_check; i++)
+ {
+ ConstraintDef *cdef = (ConstraintDef *) palloc (sizeof (ConstraintDef));
+
+ cdef->type = CONSTR_CHECK;
+ if ( check[i].ccname[0] == '$' )
+ cdef->name = NULL;
+ else
+ cdef->name = pstrdup (check[i].ccname);
+ cdef->def = (void*) pstrdup (check[i].ccsrc);
+ constraints = lappend (constraints, cdef);
+ }
+ }
+
/*
* iteration cleanup and result collection
*/
* put the inherited schema before our the schema for this table
*/
schema = nconc(inhSchema, schema);
-
+ *supconstr = constraints;
return (schema);
}
return arch;
}
-
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