Support renaming of tablespaces, and changing the owners of

aggregates, conversions, functions, operators, operator classes,
schemas, types, and tablespaces.  Fold the existing implementations
of alter domain owner and alter database owner in with these.

Christopher Kings-Lynne

1 files changed, 90 insertions, 1 deletions

diff --git a/src/backend/commands/opclasscmds.c b/src/backend/commands/opclasscmds.c
index db5c2ccabc9..d9c0c1deade 100644
--- a/src/backend/commands/opclasscmds.c
+++ b/src/backend/commands/opclasscmds.c
@@ -9,7 +9,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/commands/opclasscmds.c,v 1.25 2004/05/26 04:41:11 neilc Exp $
+ *	  $PostgreSQL: pgsql/src/backend/commands/opclasscmds.c,v 1.26 2004/06/25 21:55:53 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -871,3 +871,92 @@ RenameOpClass(List *name, const char *access_method, const char *newname)
 	heap_close(rel, NoLock);
 	heap_freetuple(tup);
 }
+
+/*
+ * Change opclass owner
+ */
+void
+AlterOpClassOwner(List *name, const char *access_method, AclId newOwnerSysId)
+{
+	Oid			opcOid;
+	Oid			amOid;
+	Oid			namespaceOid;
+	char	   *schemaname;
+	char	   *opcname;
+	HeapTuple	tup;
+	Relation	rel;
+	Form_pg_opclass	opcForm;
+
+	amOid = GetSysCacheOid(AMNAME,
+						   CStringGetDatum(access_method),
+						   0, 0, 0);
+	if (!OidIsValid(amOid))
+		ereport(ERROR,
+				(errcode(ERRCODE_UNDEFINED_OBJECT),
+				 errmsg("access method \"%s\" does not exist",
+						access_method)));
+
+	rel = heap_openr(OperatorClassRelationName, RowExclusiveLock);
+
+	/*
+	 * Look up the opclass
+	 */
+	DeconstructQualifiedName(name, &schemaname, &opcname);
+
+	if (schemaname)
+	{
+		namespaceOid = LookupExplicitNamespace(schemaname);
+
+		tup = SearchSysCacheCopy(CLAAMNAMENSP,
+								 ObjectIdGetDatum(amOid),
+								 PointerGetDatum(opcname),
+								 ObjectIdGetDatum(namespaceOid),
+								 0);
+		if (!HeapTupleIsValid(tup))
+			ereport(ERROR,
+					(errcode(ERRCODE_UNDEFINED_OBJECT),
+					 errmsg("operator class \"%s\" does not exist for access method \"%s\"",
+							opcname, access_method)));
+
+	}
+	else
+	{
+		opcOid = OpclassnameGetOpcid(amOid, opcname);
+		if (!OidIsValid(opcOid))
+			ereport(ERROR,
+					(errcode(ERRCODE_UNDEFINED_OBJECT),
+					 errmsg("operator class \"%s\" does not exist for access method \"%s\"",
+							opcname, access_method)));
+
+		tup = SearchSysCacheCopy(CLAOID,
+								 ObjectIdGetDatum(opcOid),
+								 0, 0, 0);
+		if (!HeapTupleIsValid(tup))		/* should not happen */
+			elog(ERROR, "cache lookup failed for opclass %u", opcOid);
+		namespaceOid = ((Form_pg_opclass) GETSTRUCT(tup))->opcnamespace;
+	}
+	opcForm = (Form_pg_opclass) GETSTRUCT(tup);
+
+	/* 
+	 * If the new owner is the same as the existing owner, consider the
+	 * command to have succeeded.  This is for dump restoration purposes.
+	 */
+	if (opcForm->opcowner != newOwnerSysId)
+	{
+		/* Otherwise, must be superuser to change object ownership */
+		if (!superuser())
+			ereport(ERROR,
+					(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
+					 errmsg("must be superuser to change owner")));
+
+		/* Modify the owner --- okay to scribble on tup because it's a copy */
+		opcForm->opcowner = newOwnerSysId;
+
+		simple_heap_update(rel, &tup->t_self, tup);
+
+		CatalogUpdateIndexes(rel, tup);
+	}
+
+	heap_close(rel, NoLock);
+	heap_freetuple(tup);
+}