*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/catalog/index.c,v 1.215 2003/09/19 19:57:42 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/catalog/index.c,v 1.216 2003/09/23 01:51:09 inoue Exp $
*
*
* INTERFACE ROUTINES
Oid *classOids,
bool primary);
static Oid IndexGetRelation(Oid indexId);
+static bool activate_index(Oid indexId, bool activate, bool inplace);
static bool reindexing = false;
return result;
}
-/*
+/* ---------------------------------
+ * activate_index -- activate/deactivate the specified index.
+ * Note that currently PostgreSQL doesn't hold the
+ * status per index
+ * ---------------------------------
+ */
+static bool
+activate_index(Oid indexId, bool activate, bool inplace)
+{
+ if (!activate) /* Currently does nothing */
+ return true;
+ return reindex_index(indexId, false, inplace);
+}
+
+/* --------------------------------
* reindex_index - This routine is used to recreate an index
+ * --------------------------------
*/
bool
reindex_index(Oid indexId, bool force, bool inplace)
* the relcache can't cope with changing its relfilenode.
*
* In either of these cases, we are definitely processing a system index,
- * so we'd better be ignoring system indexes. (These checks are just
- * for paranoia's sake --- upstream code should have disallowed reindex
- * in such cases already.)
+ * so we'd better be ignoring system indexes.
*/
if (iRel->rd_rel->relisshared)
{
if (!IsIgnoringSystemIndexes())
- elog(ERROR,
- "must be ignoring system indexes to reindex shared index %u",
- indexId);
+ ereport(ERROR,
+ (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
+ errmsg("the target relation %u is shared", indexId)));
inplace = true;
}
+#ifndef ENABLE_REINDEX_NAILED_RELATIONS
if (iRel->rd_isnailed)
{
if (!IsIgnoringSystemIndexes())
- elog(ERROR,
- "must be ignoring system indexes to reindex nailed index %u",
- indexId);
+ ereport(ERROR,
+ (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
+ errmsg("the target relation %u is nailed", indexId)));
inplace = true;
}
+#endif /* ENABLE_REINDEX_NAILED_RELATIONS */
/* Fetch info needed for index_build */
indexInfo = BuildIndexInfo(iRel);
return true;
}
-#ifdef NOT_USED
/*
+ * ----------------------------
* activate_indexes_of_a_table
* activate/deactivate indexes of the specified table.
*
* Caller must already hold exclusive lock on the table.
+ * ----------------------------
*/
bool
activate_indexes_of_a_table(Relation heaprel, bool activate)
}
return true;
}
-#endif /* NOT_USED */
-/*
- * reindex_relation - This routine is used to recreate all indexes
+/* --------------------------------
+ * reindex_relation - This routine is used to recreate indexes
* of a relation.
+ * --------------------------------
*/
bool
reindex_relation(Oid relid, bool force)
HeapTuple indexTuple;
bool old,
reindexed;
- bool overwrite;
+ bool deactivate_needed,
+ overwrite;
Relation rel;
- overwrite = false;
+ overwrite = deactivate_needed = false;
/*
* Ensure to hold an exclusive lock throughout the transaction. The
rel = heap_open(relid, AccessExclusiveLock);
/*
- * Should be ignoring system indexes if we are reindexing a system table.
- * (This is elog not ereport because caller should have caught it.)
+ * ignore the indexes of the target system relation while processing
+ * reindex.
*/
if (!IsIgnoringSystemIndexes() &&
IsSystemRelation(rel) && !IsToastRelation(rel))
- elog(ERROR,
- "must be ignoring system indexes to reindex system table %u",
- relid);
+ deactivate_needed = true;
/*
* Shared system indexes must be overwritten because it's impossible
*/
if (rel->rd_rel->relisshared)
{
- if (!IsIgnoringSystemIndexes()) /* shouldn't happen */
- elog(ERROR,
- "must be ignoring system indexes to reindex shared table %u",
- relid);
- overwrite = true;
+ if (IsIgnoringSystemIndexes())
+ {
+ overwrite = true;
+ deactivate_needed = true;
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
+ errmsg("the target relation %u is shared", relid)));
}
old = SetReindexProcessing(true);
+ if (deactivate_needed)
+ {
+ if (IndexesAreActive(rel))
+ {
+ if (!force)
+ {
+ SetReindexProcessing(old);
+ heap_close(rel, NoLock);
+ return false;
+ }
+ activate_indexes_of_a_table(rel, false);
+ CommandCounterIncrement();
+ }
+ }
+
/*
* Continue to hold the lock.
*/
heap_close(rel, NoLock);
- /*
- * Find table's indexes by looking in pg_index (not trusting indexes...)
- */
indexRelation = heap_openr(IndexRelationName, AccessShareLock);
- ScanKeyEntryInitialize(&entry, 0,
- Anum_pg_index_indrelid,
- F_OIDEQ,
- ObjectIdGetDatum(relid));
+ ScanKeyEntryInitialize(&entry, 0, Anum_pg_index_indrelid,
+ F_OIDEQ, ObjectIdGetDatum(relid));
scan = heap_beginscan(indexRelation, SnapshotNow, 1, &entry);
reindexed = false;
while ((indexTuple = heap_getnext(scan, ForwardScanDirection)) != NULL)
{
Form_pg_index index = (Form_pg_index) GETSTRUCT(indexTuple);
- if (reindex_index(index->indexrelid, false, overwrite))
+ if (activate_index(index->indexrelid, true, overwrite))
reindexed = true;
else
{
}
heap_endscan(scan);
heap_close(indexRelation, AccessShareLock);
+ if (reindexed)
+ {
+ /*
+ * Ok,we could use the reindexed indexes of the target system
+ * relation now.
+ */
+ if (deactivate_needed)
+ {
+ if (!overwrite && relid == RelOid_pg_class)
+ {
+ /*
+ * For pg_class, relhasindex should be set to true here in
+ * place.
+ */
+ setRelhasindex(relid, true, false, InvalidOid);
+ CommandCounterIncrement();
+ /*
+ * However the following setRelhasindex() is needed to
+ * keep consistency with WAL.
+ */
+ }
+ setRelhasindex(relid, true, false, InvalidOid);
+ }
+ }
SetReindexProcessing(old);
return reindexed;
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/commands/indexcmds.c,v 1.107 2003/09/19 19:57:42 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/commands/indexcmds.c,v 1.108 2003/09/23 01:51:09 inoue Exp $
*
*-------------------------------------------------------------------------
*/
ReindexTable(RangeVar *relation, bool force)
{
Oid heapOid;
- HeapTuple tuple;
+ char relkind;
heapOid = RangeVarGetRelid(relation, false);
- tuple = SearchSysCache(RELOID,
- ObjectIdGetDatum(heapOid),
- 0, 0, 0);
- if (!HeapTupleIsValid(tuple)) /* shouldn't happen */
- elog(ERROR, "cache lookup failed for relation %u", heapOid);
+ relkind = get_rel_relkind(heapOid);
- if (((Form_pg_class) GETSTRUCT(tuple))->relkind != RELKIND_RELATION &&
- ((Form_pg_class) GETSTRUCT(tuple))->relkind != RELKIND_TOASTVALUE)
+ if (relkind != RELKIND_RELATION && relkind != RELKIND_TOASTVALUE)
ereport(ERROR,
(errcode(ERRCODE_WRONG_OBJECT_TYPE),
errmsg("relation \"%s\" is not a table",
relation->relname)));
- if (IsSystemClass((Form_pg_class) GETSTRUCT(tuple)) &&
- !IsToastClass((Form_pg_class) GETSTRUCT(tuple)))
- {
- if (!allowSystemTableMods)
- ereport(ERROR,
- (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
- errmsg("permission denied: \"%s\" is a system table",
- relation->relname),
- errhint("Do REINDEX in standalone postgres with -O -P options.")));
- if (!IsIgnoringSystemIndexes())
- ereport(ERROR,
- (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
- errmsg("permission denied: \"%s\" is a system table",
- relation->relname),
- errhint("Do REINDEX in standalone postgres with -P -O options.")));
- }
-
- ReleaseSysCache(tuple);
-
/*
* In-place REINDEX within a transaction block is dangerous, because
* if the transaction is later rolled back we have no way to undo
projects / postgresql.git / commitdiff