Change many routines to return ObjectAddress rather than OID

The changed routines are mostly those that can be directly called by
ProcessUtilitySlow; the intention is to make the affected object
information more precise, in support for future event trigger changes.
Originally it was envisioned that the OID of the affected object would
be enough, and in most cases that is correct, but upon actually
implementing the event trigger changes it turned out that ObjectAddress
is more widely useful.

Additionally, some command execution routines grew an output argument
that's an object address which provides further info about the executed
command.  To wit:

* for ALTER DOMAIN / ADD CONSTRAINT, it corresponds to the address of
  the new constraint

* for ALTER OBJECT / SET SCHEMA, it corresponds to the address of the
  schema that originally contained the object.

* for ALTER EXTENSION {ADD, DROP} OBJECT, it corresponds to the address
  of the object added to or dropped from the extension.

There's no user-visible change in this commit, and no functional change
either.

Discussion: 20150218213255.GC6717@tamriel.snowman.net
Reviewed-By: Stephen Frost, Andres Freund

src/backend/bootstrap/bootparse.y

@@ -251,7 +251,8 @@ Boot_CreateStmt:
 													  (Datum) 0,
 													  false,
 													  true,
-													  false);
+													  false,
+													  NULL);
 						elog(DEBUG4, "relation created with OID %u", id);
 					}
 					do_end();

src/backend/catalog/heap.c

@@ -89,7 +89,7 @@ static void AddNewRelationTuple(Relation pg_class_desc,
 					char relkind,
 					Datum relacl,
 					Datum reloptions);
-static Oid AddNewRelationType(const char *typeName,
+static ObjectAddress AddNewRelationType(const char *typeName,
 				   Oid typeNamespace,
 				   Oid new_rel_oid,
 				   char new_rel_kind,
@@ -935,7 +935,7 @@ AddNewRelationTuple(Relation pg_class_desc,
  *		define a composite type corresponding to the new relation
  * --------------------------------
  */
-static Oid
+static ObjectAddress
 AddNewRelationType(const char *typeName,
 				   Oid typeNamespace,
 				   Oid new_rel_oid,
@@ -1006,6 +1006,9 @@ AddNewRelationType(const char *typeName,
  *	allow_system_table_mods: TRUE to allow creation in system namespaces
  *	is_internal: is this a system-generated catalog?
  *
+ * Output parameters:
+ *	typaddress: if not null, gets the object address of the new pg_type entry
+ *
  * Returns the OID of the new relation
  * --------------------------------
  */
@@ -1029,7 +1032,8 @@ heap_create_with_catalog(const char *relname,
 						 Datum reloptions,
 						 bool use_user_acl,
 						 bool allow_system_table_mods,
-						 bool is_internal)
+						 bool is_internal,
+						 ObjectAddress *typaddress)
 {
 	Relation	pg_class_desc;
 	Relation	new_rel_desc;
@@ -1037,6 +1041,7 @@ heap_create_with_catalog(const char *relname,
 	Oid			existing_relid;
 	Oid			old_type_oid;
 	Oid			new_type_oid;
+	ObjectAddress new_type_addr;
 	Oid			new_array_oid = InvalidOid;
 
 	pg_class_desc = heap_open(RelationRelationId, RowExclusiveLock);
@@ -1187,13 +1192,16 @@ heap_create_with_catalog(const char *relname,
 	 * creating the same type name in parallel but hadn't committed yet when
 	 * we checked for a duplicate name above.
 	 */
-	new_type_oid = AddNewRelationType(relname,
-									  relnamespace,
-									  relid,
-									  relkind,
-									  ownerid,
-									  reltypeid,
-									  new_array_oid);
+	new_type_addr = AddNewRelationType(relname,
+									   relnamespace,
+									   relid,
+									   relkind,
+									   ownerid,
+									   reltypeid,
+									   new_array_oid);
+	new_type_oid = new_type_addr.objectId;
+	if (typaddress)
+		*typaddress = new_type_addr;
 
 	/*
 	 * Now make the array type if wanted.

src/backend/catalog/objectaddress.c

@@ -531,6 +531,12 @@ ObjectTypeMap[] =
 	{ "policy", OBJECT_POLICY }
 };
 
+const ObjectAddress InvalidObjectAddress =
+{
+	InvalidOid,
+	InvalidOid,
+	0
+};
 
 static ObjectAddress get_object_address_unqualified(ObjectType objtype,
 							   List *qualname, bool missing_ok);

src/backend/catalog/pg_aggregate.c

@@ -43,7 +43,7 @@ static Oid lookup_agg_function(List *fnName, int nargs, Oid *input_types,
 /*
  * AggregateCreate
  */
-Oid
+ObjectAddress
 AggregateCreate(const char *aggName,
 				Oid aggNamespace,
 				char aggKind,
@@ -522,32 +522,33 @@ AggregateCreate(const char *aggName,
 	 * aggregate.  (This could fail if there's already a conflicting entry.)
 	 */
 
-	procOid = ProcedureCreate(aggName,
-							  aggNamespace,
-							  false,	/* no replacement */
-							  false,	/* doesn't return a set */
-							  finaltype,		/* returnType */
-							  GetUserId(),		/* proowner */
-							  INTERNALlanguageId,		/* languageObjectId */
-							  InvalidOid,		/* no validator */
-							  "aggregate_dummy",		/* placeholder proc */
-							  NULL,		/* probin */
-							  true,		/* isAgg */
-							  false,	/* isWindowFunc */
-							  false,	/* security invoker (currently not
+	myself = ProcedureCreate(aggName,
+							 aggNamespace,
+							 false,		/* no replacement */
+							 false,		/* doesn't return a set */
+							 finaltype, /* returnType */
+							 GetUserId(),		/* proowner */
+							 INTERNALlanguageId,		/* languageObjectId */
+							 InvalidOid,		/* no validator */
+							 "aggregate_dummy", /* placeholder proc */
+							 NULL,		/* probin */
+							 true,		/* isAgg */
+							 false,		/* isWindowFunc */
+							 false,		/* security invoker (currently not
 										 * definable for agg) */
-							  false,	/* isLeakProof */
-							  false,	/* isStrict (not needed for agg) */
-							  PROVOLATILE_IMMUTABLE,	/* volatility (not
+							 false,		/* isLeakProof */
+							 false,		/* isStrict (not needed for agg) */
+							 PROVOLATILE_IMMUTABLE,		/* volatility (not
 														 * needed for agg) */
-							  parameterTypes,	/* paramTypes */
-							  allParameterTypes,		/* allParamTypes */
-							  parameterModes,	/* parameterModes */
-							  parameterNames,	/* parameterNames */
-							  parameterDefaults,		/* parameterDefaults */
-							  PointerGetDatum(NULL),	/* proconfig */
-							  1,	/* procost */
-							  0);		/* prorows */
+							 parameterTypes,	/* paramTypes */
+							 allParameterTypes, /* allParamTypes */
+							 parameterModes,	/* parameterModes */
+							 parameterNames,	/* parameterNames */
+							 parameterDefaults, /* parameterDefaults */
+							 PointerGetDatum(NULL),		/* proconfig */
+							 1, /* procost */
+							 0);	/* prorows */
+	procOid = myself.objectId;
 
 	/*
 	 * Okay to create the pg_aggregate entry.
@@ -599,9 +600,6 @@ AggregateCreate(const char *aggName,
 	 * on aggTransType since we depend on it indirectly through transfn.
 	 * Likewise for aggmTransType if any.
 	 */
-	myself.classId = ProcedureRelationId;
-	myself.objectId = procOid;
-	myself.objectSubId = 0;
 
 	/* Depends on transition function */
 	referenced.classId = ProcedureRelationId;
@@ -654,7 +652,7 @@ AggregateCreate(const char *aggName,
 		recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
 	}
 
-	return procOid;
+	return myself;
 }
 
 /*

src/backend/catalog/pg_conversion.c

@@ -37,7 +37,7 @@
  *
  * Add a new tuple to pg_conversion.
  */
-Oid
+ObjectAddress
 ConversionCreate(const char *conname, Oid connamespace,
 				 Oid conowner,
 				 int32 conforencoding, int32 contoencoding,
@@ -141,7 +141,7 @@ ConversionCreate(const char *conname, Oid connamespace,
 	heap_freetuple(tup);
 	heap_close(rel, RowExclusiveLock);
 
-	return oid;
+	return myself;
 }
 
 /*

src/backend/catalog/pg_operator.c

@@ -61,7 +61,7 @@ static Oid get_other_operator(List *otherOp,
 				   Oid leftTypeId, Oid rightTypeId,
 				   bool isCommutator);
 
-static void makeOperatorDependencies(HeapTuple tuple);
+static ObjectAddress makeOperatorDependencies(HeapTuple tuple);
 
 
 /*
@@ -325,7 +325,7 @@ OperatorShellMake(const char *operatorName,
  * Forward declaration is used only for this purpose, it is
  * not available to the user as it is for type definition.
  */
-Oid
+ObjectAddress
 OperatorCreate(const char *operatorName,
 			   Oid operatorNamespace,
 			   Oid leftTypeId,
@@ -352,6 +352,7 @@ OperatorCreate(const char *operatorName,
 	NameData	oname;
 	TupleDesc	tupDesc;
 	int			i;
+	ObjectAddress address;
 
 	/*
 	 * Sanity checks
@@ -540,7 +541,7 @@ OperatorCreate(const char *operatorName,
 	CatalogUpdateIndexes(pg_operator_desc, tup);
 
 	/* Add dependencies for the entry */
-	makeOperatorDependencies(tup);
+	address = makeOperatorDependencies(tup);
 
 	/* Post creation hook for new operator */
 	InvokeObjectPostCreateHook(OperatorRelationId, operatorObjectId, 0);
@@ -564,7 +565,7 @@ OperatorCreate(const char *operatorName,
 	if (OidIsValid(commutatorId) || OidIsValid(negatorId))
 		OperatorUpd(operatorObjectId, commutatorId, negatorId);
 
-	return operatorObjectId;
+	return address;
 }
 
 /*
@@ -764,7 +765,7 @@ OperatorUpd(Oid baseId, Oid commId, Oid negId)
  * NB: the OidIsValid tests in this routine are necessary, in case
  * the given operator is a shell.
  */
-static void
+static ObjectAddress
 makeOperatorDependencies(HeapTuple tuple)
 {
 	Form_pg_operator oper = (Form_pg_operator) GETSTRUCT(tuple);
@@ -860,4 +861,6 @@ makeOperatorDependencies(HeapTuple tuple)
 
 	/* Dependency on extension */
 	recordDependencyOnCurrentExtension(&myself, true);
+
+	return myself;
 }

src/backend/catalog/pg_proc.c

@@ -64,7 +64,7 @@ static bool match_prosrc_to_literal(const char *prosrc, const char *literal,
  * not "ArrayType *", to avoid importing array.h into pg_proc_fn.h.
  * ----------------------------------------------------------------
  */
-Oid
+ObjectAddress
 ProcedureCreate(const char *procedureName,
 				Oid procNamespace,
 				bool replace,
@@ -703,7 +703,7 @@ ProcedureCreate(const char *procedureName,
 			AtEOXact_GUC(true, save_nestlevel);
 	}
 
-	return retval;
+	return myself;
 }
 
 

src/backend/catalog/pg_type.c

@@ -52,7 +52,7 @@ Oid			binary_upgrade_next_pg_type_oid = InvalidOid;
  *		with correct ones, and "typisdefined" will be set to true.
  * ----------------------------------------------------------------
  */
-Oid
+ObjectAddress
 TypeShellMake(const char *typeName, Oid typeNamespace, Oid ownerId)
 {
 	Relation	pg_type_desc;
@@ -63,6 +63,7 @@ TypeShellMake(const char *typeName, Oid typeNamespace, Oid ownerId)
 	bool		nulls[Natts_pg_type];
 	Oid			typoid;
 	NameData	name;
+	ObjectAddress address;
 
 	Assert(PointerIsValid(typeName));
 
@@ -171,13 +172,15 @@ TypeShellMake(const char *typeName, Oid typeNamespace, Oid ownerId)
 	/* Post creation hook for new shell type */
 	InvokeObjectPostCreateHook(TypeRelationId, typoid, 0);
 
+	ObjectAddressSet(address, TypeRelationId, typoid);
+
 	/*
 	 * clean up and return the type-oid
 	 */
 	heap_freetuple(tup);
 	heap_close(pg_type_desc, RowExclusiveLock);
 
-	return typoid;
+	return address;
 }
 
 /* ----------------------------------------------------------------
@@ -185,12 +188,12 @@ TypeShellMake(const char *typeName, Oid typeNamespace, Oid ownerId)
  *
  *		This does all the necessary work needed to define a new type.
  *
- *		Returns the OID assigned to the new type.  If newTypeOid is
- *		zero (the normal case), a new OID is created; otherwise we
- *		use exactly that OID.
+ *		Returns the ObjectAddress assigned to the new type.
+ *		If newTypeOid is zero (the normal case), a new OID is created;
+ *		otherwise we use exactly that OID.
  * ----------------------------------------------------------------
  */
-Oid
+ObjectAddress
 TypeCreate(Oid newTypeOid,
 		   const char *typeName,
 		   Oid typeNamespace,
@@ -233,6 +236,7 @@ TypeCreate(Oid newTypeOid,
 	NameData	name;
 	int			i;
 	Acl		   *typacl = NULL;
+	ObjectAddress address;
 
 	/*
 	 * We assume that the caller validated the arguments individually, but did
@@ -488,12 +492,14 @@ TypeCreate(Oid newTypeOid,
 	/* Post creation hook for new type */
 	InvokeObjectPostCreateHook(TypeRelationId, typeObjectId, 0);
 
+	ObjectAddressSet(address, TypeRelationId, typeObjectId);
+
 	/*
 	 * finish up
 	 */
 	heap_close(pg_type_desc, RowExclusiveLock);
 
-	return typeObjectId;
+	return address;
 }
 
 /*

src/backend/catalog/toasting.c

@@ -289,7 +289,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 										   reloptions,
 										   false,
 										   true,
-										   true);
+										   true,
+										   NULL);
 	Assert(toast_relid != InvalidOid);
 
 	/* make the toast relation visible, else heap_open will fail */

src/backend/commands/aggregatecmds.c

@@ -51,7 +51,7 @@
  * isn't an ordered-set aggregate.
  * "parameters" is a list of DefElem representing the agg's definition clauses.
  */
-Oid
+ObjectAddress
 DefineAggregate(List *name, List *args, bool oldstyle, List *parameters,
 				const char *queryString)
 {

src/backend/commands/alter.c

@@ -299,8 +299,10 @@ AlterObjectRename_internal(Relation rel, Oid objectId, const char *new_name)
 /*
  * Executes an ALTER OBJECT / RENAME TO statement.  Based on the object
  * type, the function appropriate to that type is executed.
+ *
+ * Return value is the address of the renamed object.
  */
-Oid
+ObjectAddress
 ExecRenameStmt(RenameStmt *stmt)
 {
 	switch (stmt->renameType)
@@ -378,39 +380,54 @@ ExecRenameStmt(RenameStmt *stmt)
 										   stmt->newname);
 				heap_close(catalog, RowExclusiveLock);
 
-				return address.objectId;
+				return address;
 			}
 
 		default:
 			elog(ERROR, "unrecognized rename stmt type: %d",
 				 (int) stmt->renameType);
-			return InvalidOid;	/* keep compiler happy */
+			return InvalidObjectAddress;		/* keep compiler happy */
 	}
 }
 
 /*
  * Executes an ALTER OBJECT / SET SCHEMA statement.  Based on the object
  * type, the function appropriate to that type is executed.
+ *
+ * Return value is that of the altered object.
+ *
+ * oldSchemaAddr is an output argument which, if not NULL, is set to the object
+ * address of the original schema.
  */
-Oid
-ExecAlterObjectSchemaStmt(AlterObjectSchemaStmt *stmt)
+ObjectAddress
+ExecAlterObjectSchemaStmt(AlterObjectSchemaStmt *stmt,
+						  ObjectAddress *oldSchemaAddr)
 {
+	ObjectAddress address;
+	Oid			oldNspOid;
+
 	switch (stmt->objectType)
 	{
 		case OBJECT_EXTENSION:
-			return AlterExtensionNamespace(stmt->object, stmt->newschema);
+			address = AlterExtensionNamespace(stmt->object, stmt->newschema,
+										  oldSchemaAddr ? &oldNspOid : NULL);
+			break;
 
 		case OBJECT_FOREIGN_TABLE:
 		case OBJECT_SEQUENCE:
 		case OBJECT_TABLE:
 		case OBJECT_VIEW:
 		case OBJECT_MATVIEW:
-			return AlterTableNamespace(stmt);
+			address = AlterTableNamespace(stmt,
+										  oldSchemaAddr ? &oldNspOid : NULL);
+			break;
 
 		case OBJECT_DOMAIN:
 		case OBJECT_TYPE:
-			return AlterTypeNamespace(stmt->object, stmt->newschema,
-									  stmt->objectType);
+			address = AlterTypeNamespace(stmt->object, stmt->newschema,
+										 stmt->objectType,
+										 oldSchemaAddr ? &oldNspOid : NULL);
+			break;
 
 			/* generic code path */
 		case OBJECT_AGGREGATE:
@@ -442,19 +459,22 @@ ExecAlterObjectSchemaStmt(AlterObjectSchemaStmt *stmt)
 				catalog = heap_open(classId, RowExclusiveLock);
 				nspOid = LookupCreationNamespace(stmt->newschema);
 
-				AlterObjectNamespace_internal(catalog, address.objectId,
-											  nspOid);
+				oldNspOid = AlterObjectNamespace_internal(catalog, address.objectId,
+														  nspOid);
 				heap_close(catalog, RowExclusiveLock);
-
-				return address.objectId;
 			}
 			break;
 
 		default:
 			elog(ERROR, "unrecognized AlterObjectSchemaStmt type: %d",
 				 (int) stmt->objectType);
-			return InvalidOid;	/* keep compiler happy */
+			return InvalidObjectAddress;		/* keep compiler happy */
 	}
+
+	if (oldSchemaAddr)
+		ObjectAddressSet(*oldSchemaAddr, NamespaceRelationId, oldNspOid);
+
+	return address;
 }
 
 /*
@@ -676,7 +696,7 @@ AlterObjectNamespace_internal(Relation rel, Oid objid, Oid nspOid)
  * Executes an ALTER OBJECT / OWNER TO statement.  Based on the object
  * type, the function appropriate to that type is executed.
  */
-Oid
+ObjectAddress
 ExecAlterOwnerStmt(AlterOwnerStmt *stmt)
 {
 	Oid			newowner = get_role_oid(stmt->newowner, false);
@@ -747,15 +767,14 @@ ExecAlterOwnerStmt(AlterOwnerStmt *stmt)
 				AlterObjectOwner_internal(catalog, address.objectId, newowner);
 				heap_close(catalog, RowExclusiveLock);
 
-				return address.objectId;
+				return address;
 			}
 			break;
 
 		default:
 			elog(ERROR, "unrecognized AlterOwnerStmt type: %d",
 				 (int) stmt->objectType);
-
-			return InvalidOid;	/* keep compiler happy */
+			return InvalidObjectAddress;		/* keep compiler happy */
 	}
 }
 

src/backend/commands/cluster.c

@@ -677,7 +677,8 @@ make_new_heap(Oid OIDOldHeap, Oid NewTableSpace, char relpersistence,
 										  reloptions,
 										  false,
 										  true,
-										  true);
+										  true,
+										  NULL);
 	Assert(OIDNewHeap != InvalidOid);
 
 	ReleaseSysCache(tuple);

src/backend/commands/collationcmds.c

@@ -37,7 +37,7 @@
 /*
  * CREATE COLLATION
  */
-Oid
+ObjectAddress
 DefineCollation(List *names, List *parameters)
 {
 	char	   *collName;
@@ -51,6 +51,7 @@ DefineCollation(List *names, List *parameters)
 	char	   *collcollate = NULL;
 	char	   *collctype = NULL;
 	Oid			newoid;
+	ObjectAddress address;
 
 	collNamespace = QualifiedNameGetCreationNamespace(names, &collName);
 
@@ -137,11 +138,13 @@ DefineCollation(List *names, List *parameters)
 							 collcollate,
 							 collctype);
 
+	ObjectAddressSet(address, CollationRelationId, newoid);
+
 	/* check that the locales can be loaded */
 	CommandCounterIncrement();
 	(void) pg_newlocale_from_collation(newoid);
 
-	return newoid;
+	return address;
 }
 
 /*

src/backend/commands/comment.c

@@ -36,11 +36,11 @@
  * This routine is used to add the associated comment into
  * pg_description for the object specified by the given SQL command.
  */
-Oid
+ObjectAddress
 CommentObject(CommentStmt *stmt)
 {
-	ObjectAddress address;
 	Relation	relation;
+	ObjectAddress address = InvalidObjectAddress;
 
 	/*
 	 * When loading a dump, we may see a COMMENT ON DATABASE for the old name
@@ -60,7 +60,7 @@ CommentObject(CommentStmt *stmt)
 			ereport(WARNING,
 					(errcode(ERRCODE_UNDEFINED_DATABASE),
 					 errmsg("database \"%s\" does not exist", database)));
-			return InvalidOid;
+			return address;
 		}
 	}
 
@@ -126,7 +126,7 @@ CommentObject(CommentStmt *stmt)
 	if (relation != NULL)
 		relation_close(relation, NoLock);
 
-	return address.objectId;
+	return address;
 }
 
 /*

src/backend/commands/conversioncmds.c

@@ -34,7 +34,7 @@
 /*
  * CREATE CONVERSION
  */
-Oid
+ObjectAddress
 CreateConversionCommand(CreateConversionStmt *stmt)
 {
 	Oid			namespaceId;

src/backend/commands/createas.c

@@ -58,8 +58,8 @@ typedef struct
 	BulkInsertState bistate;	/* bulk insert state */
 } DR_intorel;
 
-/* the OID of the created table, for ExecCreateTableAs consumption */
-static Oid	CreateAsRelid = InvalidOid;
+/* the address of the created table, for ExecCreateTableAs consumption */
+static ObjectAddress CreateAsReladdr = {InvalidOid, InvalidOid, 0};
 
 static void intorel_startup(DestReceiver *self, int operation, TupleDesc typeinfo);
 static void intorel_receive(TupleTableSlot *slot, DestReceiver *self);
@@ -70,7 +70,7 @@ static void intorel_destroy(DestReceiver *self);
 /*
  * ExecCreateTableAs -- execute a CREATE TABLE AS command
  */
-Oid
+ObjectAddress
 ExecCreateTableAs(CreateTableAsStmt *stmt, const char *queryString,
 				  ParamListInfo params, char *completionTag)
 {
@@ -81,7 +81,7 @@ ExecCreateTableAs(CreateTableAsStmt *stmt, const char *queryString,
 	Oid			save_userid = InvalidOid;
 	int			save_sec_context = 0;
 	int			save_nestlevel = 0;
-	Oid			relOid;
+	ObjectAddress address;
 	List	   *rewritten;
 	PlannedStmt *plan;
 	QueryDesc  *queryDesc;
@@ -99,7 +99,7 @@ ExecCreateTableAs(CreateTableAsStmt *stmt, const char *queryString,
 					(errcode(ERRCODE_DUPLICATE_TABLE),
 					 errmsg("relation \"%s\" already exists, skipping",
 							stmt->into->rel->relname)));
-			return InvalidOid;
+			return InvalidObjectAddress;
 		}
 	}
 
@@ -121,9 +121,9 @@ ExecCreateTableAs(CreateTableAsStmt *stmt, const char *queryString,
 		Assert(!is_matview);	/* excluded by syntax */
 		ExecuteQuery(estmt, into, queryString, params, dest, completionTag);
 
-		relOid = CreateAsRelid;
-		CreateAsRelid = InvalidOid;
-		return relOid;
+		address = CreateAsReladdr;
+		CreateAsReladdr = InvalidObjectAddress;
+		return address;
 	}
 	Assert(query->commandType == CMD_SELECT);
 
@@ -216,10 +216,10 @@ ExecCreateTableAs(CreateTableAsStmt *stmt, const char *queryString,
 		SetUserIdAndSecContext(save_userid, save_sec_context);
 	}
 
-	relOid = CreateAsRelid;
-	CreateAsRelid = InvalidOid;
+	address = CreateAsReladdr;
+	CreateAsReladdr = InvalidObjectAddress;
 
-	return relOid;
+	return address;
 }
 
 /*
@@ -288,7 +288,7 @@ intorel_startup(DestReceiver *self, int operation, TupleDesc typeinfo)
 	bool		is_matview;
 	char		relkind;
 	CreateStmt *create;
-	Oid			intoRelationId;
+	ObjectAddress intoRelationAddr;
 	Relation	intoRelationDesc;
 	RangeTblEntry *rte;
 	Datum		toast_options;
@@ -385,7 +385,7 @@ intorel_startup(DestReceiver *self, int operation, TupleDesc typeinfo)
 	/*
 	 * Actually create the target table
 	 */
-	intoRelationId = DefineRelation(create, relkind, InvalidOid);
+	intoRelationAddr = DefineRelation(create, relkind, InvalidOid, NULL);
 
 	/*
 	 * If necessary, create a TOAST table for the target table.  Note that
@@ -403,7 +403,7 @@ intorel_startup(DestReceiver *self, int operation, TupleDesc typeinfo)
 
 	(void) heap_reloptions(RELKIND_TOASTVALUE, toast_options, true);
 
-	NewRelationCreateToastTable(intoRelationId, toast_options);
+	NewRelationCreateToastTable(intoRelationAddr.objectId, toast_options);
 
 	/* Create the "view" part of a materialized view. */
 	if (is_matview)
@@ -411,14 +411,14 @@ intorel_startup(DestReceiver *self, int operation, TupleDesc typeinfo)
 		/* StoreViewQuery scribbles on tree, so make a copy */
 		Query	   *query = (Query *) copyObject(into->viewQuery);
 
-		StoreViewQuery(intoRelationId, query, false);
+		StoreViewQuery(intoRelationAddr.objectId, query, false);
 		CommandCounterIncrement();
 	}
 
 	/*
 	 * Finally we can open the target table
 	 */
-	intoRelationDesc = heap_open(intoRelationId, AccessExclusiveLock);
+	intoRelationDesc = heap_open(intoRelationAddr.objectId, AccessExclusiveLock);
 
 	/*
 	 * Check INSERT permission on the constructed table.
@@ -428,7 +428,7 @@ intorel_startup(DestReceiver *self, int operation, TupleDesc typeinfo)
 	 */
 	rte = makeNode(RangeTblEntry);
 	rte->rtekind = RTE_RELATION;
-	rte->relid = intoRelationId;
+	rte->relid = intoRelationAddr.objectId;
 	rte->relkind = relkind;
 	rte->requiredPerms = ACL_INSERT;
 
@@ -446,7 +446,7 @@ intorel_startup(DestReceiver *self, int operation, TupleDesc typeinfo)
 	 * be enabled here.  We don't actually support that currently, so throw
 	 * our own ereport(ERROR) if that happens.
 	 */
-	if (check_enable_rls(intoRelationId, InvalidOid, false) == RLS_ENABLED)
+	if (check_enable_rls(intoRelationAddr.objectId, InvalidOid, false) == RLS_ENABLED)
 		ereport(ERROR,
 				(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
 				 (errmsg("policies not yet implemented for this command"))));
@@ -464,8 +464,8 @@ intorel_startup(DestReceiver *self, int operation, TupleDesc typeinfo)
 	myState->rel = intoRelationDesc;
 	myState->output_cid = GetCurrentCommandId(true);
 
-	/* and remember the new relation's OID for ExecCreateTableAs */
-	CreateAsRelid = RelationGetRelid(myState->rel);
+	/* and remember the new relation's address for ExecCreateTableAs */
+	CreateAsReladdr = intoRelationAddr;
 
 	/*
 	 * We can skip WAL-logging the insertions, unless PITR or streaming

src/backend/commands/dbcommands.c

@@ -938,7 +938,7 @@ dropdb(const char *dbname, bool missing_ok)
 /*
  * Rename database
  */
-Oid
+ObjectAddress
 RenameDatabase(const char *oldname, const char *newname)
 {
 	Oid			db_id;
@@ -946,6 +946,7 @@ RenameDatabase(const char *oldname, const char *newname)
 	Relation	rel;
 	int			notherbackends;
 	int			npreparedxacts;
+	ObjectAddress address;
 
 	/*
 	 * Look up the target database's OID, and get exclusive lock on it. We
@@ -1013,12 +1014,14 @@ RenameDatabase(const char *oldname, const char *newname)
 
 	InvokeObjectPostAlterHook(DatabaseRelationId, db_id, 0);
 
+	ObjectAddressSet(address, DatabaseRelationId, db_id);
+
 	/*
 	 * Close pg_database, but keep lock till commit.
 	 */
 	heap_close(rel, NoLock);
 
-	return db_id;
+	return address;
 }
 
 
@@ -1560,7 +1563,7 @@ AlterDatabaseSet(AlterDatabaseSetStmt *stmt)
 /*
  * ALTER DATABASE name OWNER TO newowner
  */
-Oid
+ObjectAddress
 AlterDatabaseOwner(const char *dbname, Oid newOwnerId)
 {
 	Oid			db_id;
@@ -1569,6 +1572,7 @@ AlterDatabaseOwner(const char *dbname, Oid newOwnerId)
 	ScanKeyData scankey;
 	SysScanDesc scan;
 	Form_pg_database datForm;
+	ObjectAddress address;
 
 	/*
 	 * Get the old tuple.  We don't need a lock on the database per se,
@@ -1663,12 +1667,14 @@ AlterDatabaseOwner(const char *dbname, Oid newOwnerId)
 
 	InvokeObjectPostAlterHook(DatabaseRelationId, HeapTupleGetOid(tuple), 0);
 
+	ObjectAddressSet(address, DatabaseRelationId, db_id);
+
 	systable_endscan(scan);
 
 	/* Close pg_database, but keep lock till commit */
 	heap_close(rel, NoLock);
 
-	return db_id;
+	return address;
 }
 
 

src/backend/commands/event_trigger.c

@@ -518,12 +518,13 @@ AlterEventTrigger(AlterEventTrigStmt *stmt)
 /*
  * Change event trigger's owner -- by name
  */
-Oid
+ObjectAddress
 AlterEventTriggerOwner(const char *name, Oid newOwnerId)
 {
 	Oid			evtOid;
 	HeapTuple	tup;
 	Relation	rel;
+	ObjectAddress address;
 
 	rel = heap_open(EventTriggerRelationId, RowExclusiveLock);
 
@@ -538,11 +539,13 @@ AlterEventTriggerOwner(const char *name, Oid newOwnerId)
 
 	AlterEventTriggerOwner_internal(rel, tup, newOwnerId);
 
+	ObjectAddressSet(address, EventTriggerRelationId, evtOid);
+
 	heap_freetuple(tup);
 
 	heap_close(rel, RowExclusiveLock);
 
-	return evtOid;
+	return address;
 }
 
 /*

src/backend/commands/extension.c

@@ -1170,7 +1170,7 @@ find_update_path(List *evi_list,
 /*
  * CREATE EXTENSION
  */
-Oid
+ObjectAddress
 CreateExtension(CreateExtensionStmt *stmt)
 {
 	DefElem    *d_schema = NULL;
@@ -1188,6 +1188,7 @@ CreateExtension(CreateExtensionStmt *stmt)
 	List	   *requiredSchemas;
 	Oid			extensionOid;
 	ListCell   *lc;
+	ObjectAddress address;
 
 	/* Check extension name validity before any filesystem access */
 	check_valid_extension_name(stmt->extname);
@@ -1206,7 +1207,7 @@ CreateExtension(CreateExtensionStmt *stmt)
 					(errcode(ERRCODE_DUPLICATE_OBJECT),
 					 errmsg("extension \"%s\" already exists, skipping",
 							stmt->extname)));
-			return InvalidOid;
+			return InvalidObjectAddress;
 		}
 		else
 			ereport(ERROR,
@@ -1443,12 +1444,13 @@ CreateExtension(CreateExtensionStmt *stmt)
 	/*
 	 * Insert new tuple into pg_extension, and create dependency entries.
 	 */
-	extensionOid = InsertExtensionTuple(control->name, extowner,
-										schemaOid, control->relocatable,
-										versionName,
-										PointerGetDatum(NULL),
-										PointerGetDatum(NULL),
-										requiredExtensions);
+	address = InsertExtensionTuple(control->name, extowner,
+								   schemaOid, control->relocatable,
+								   versionName,
+								   PointerGetDatum(NULL),
+								   PointerGetDatum(NULL),
+								   requiredExtensions);
+	extensionOid = address.objectId;
 
 	/*
 	 * Apply any control-file comment on extension
@@ -1471,7 +1473,7 @@ CreateExtension(CreateExtensionStmt *stmt)
 	ApplyExtensionUpdates(extensionOid, pcontrol,
 						  versionName, updateVersions);
 
-	return extensionOid;
+	return address;
 }
 
 /*
@@ -1487,7 +1489,7 @@ CreateExtension(CreateExtensionStmt *stmt)
  * extConfig and extCondition should be arrays or PointerGetDatum(NULL).
  * We declare them as plain Datum to avoid needing array.h in extension.h.
  */
-Oid
+ObjectAddress
 InsertExtensionTuple(const char *extName, Oid extOwner,
 					 Oid schemaOid, bool relocatable, const char *extVersion,
 					 Datum extConfig, Datum extCondition,
@@ -1564,7 +1566,7 @@ InsertExtensionTuple(const char *extName, Oid extOwner,
 	/* Post creation hook for new extension */
 	InvokeObjectPostCreateHook(ExtensionRelationId, extensionOid, 0);
 
-	return extensionOid;
+	return myself;
 }
 
 /*
@@ -2399,8 +2401,8 @@ extension_config_remove(Oid extensionoid, Oid tableoid)
 /*
  * Execute ALTER EXTENSION SET SCHEMA
  */
-Oid
-AlterExtensionNamespace(List *names, const char *newschema)
+ObjectAddress
+AlterExtensionNamespace(List *names, const char *newschema, Oid *oldschema)
 {
 	char	   *extensionName;
 	Oid			extensionOid;
@@ -2416,6 +2418,7 @@ AlterExtensionNamespace(List *names, const char *newschema)
 	SysScanDesc depScan;
 	HeapTuple	depTup;
 	ObjectAddresses *objsMoved;
+	ObjectAddress extAddr;
 
 	if (list_length(names) != 1)
 		ereport(ERROR,
@@ -2480,7 +2483,7 @@ AlterExtensionNamespace(List *names, const char *newschema)
 	if (extForm->extnamespace == nspOid)
 	{
 		heap_close(extRel, RowExclusiveLock);
-		return InvalidOid;
+		return InvalidObjectAddress;
 	}
 
 	/* Check extension is supposed to be relocatable */
@@ -2557,6 +2560,10 @@ AlterExtensionNamespace(List *names, const char *newschema)
 							   get_namespace_name(oldNspOid))));
 	}
 
+	/* report old schema, if caller wants it */
+	if (oldschema)
+		*oldschema = oldNspOid;
+
 	systable_endscan(depScan);
 
 	relation_close(depRel, AccessShareLock);
@@ -2575,13 +2582,15 @@ AlterExtensionNamespace(List *names, const char *newschema)
 
 	InvokeObjectPostAlterHook(ExtensionRelationId, extensionOid, 0);
 
-	return extensionOid;
+	ObjectAddressSet(extAddr, ExtensionRelationId, extensionOid);
+
+	return extAddr;
 }
 
 /*
  * Execute ALTER EXTENSION UPDATE
  */
-Oid
+ObjectAddress
 ExecAlterExtensionStmt(AlterExtensionStmt *stmt)
 {
 	DefElem    *d_new_version = NULL;
@@ -2597,6 +2606,7 @@ ExecAlterExtensionStmt(AlterExtensionStmt *stmt)
 	Datum		datum;
 	bool		isnull;
 	ListCell   *lc;
+	ObjectAddress address;
 
 	/*
 	 * We use global variables to track the extension being created, so we can
@@ -2698,7 +2708,7 @@ ExecAlterExtensionStmt(AlterExtensionStmt *stmt)
 		ereport(NOTICE,
 		   (errmsg("version \"%s\" of extension \"%s\" is already installed",
 				   versionName, stmt->extname)));
-		return InvalidOid;
+		return InvalidObjectAddress;
 	}
 
 	/*
@@ -2715,7 +2725,9 @@ ExecAlterExtensionStmt(AlterExtensionStmt *stmt)
 	ApplyExtensionUpdates(extensionOid, control,
 						  oldVersionName, updateVersions);
 
-	return extensionOid;
+	ObjectAddressSet(address, ExtensionRelationId, extensionOid);
+
+	return address;
 }
 
 /*
@@ -2879,9 +2891,15 @@ ApplyExtensionUpdates(Oid extensionOid,
 
 /*
  * Execute ALTER EXTENSION ADD/DROP
+ *
+ * Return value is the address of the altered extension.
+ *
+ * objAddr is an output argument which, if not NULL, is set to the address of
+ * the added/dropped object.
  */
-Oid
-ExecAlterExtensionContentsStmt(AlterExtensionContentsStmt *stmt)
+ObjectAddress
+ExecAlterExtensionContentsStmt(AlterExtensionContentsStmt *stmt,
+							   ObjectAddress *objAddr)
 {
 	ObjectAddress extension;
 	ObjectAddress object;
@@ -2906,6 +2924,10 @@ ExecAlterExtensionContentsStmt(AlterExtensionContentsStmt *stmt)
 	object = get_object_address(stmt->objtype, stmt->objname, stmt->objargs,
 								&relation, ShareUpdateExclusiveLock, false);
 
+	Assert(object.objectSubId == 0);
+	if (objAddr)
+		*objAddr = object;
+
 	/* Permission check: must own target object, too */
 	check_object_ownership(GetUserId(), stmt->objtype, object,
 						   stmt->objname, stmt->objargs, relation);
@@ -2984,5 +3006,5 @@ ExecAlterExtensionContentsStmt(AlterExtensionContentsStmt *stmt)
 	if (relation != NULL)
 		relation_close(relation, NoLock);
 
-	return extension.objectId;
+	return extension;
 }

src/backend/commands/foreigncmds.c

@@ -292,12 +292,13 @@ AlterForeignDataWrapperOwner_internal(Relation rel, HeapTuple tup, Oid newOwnerI
  *
  * Note restrictions in the "_internal" function, above.
  */
-Oid
+ObjectAddress
 AlterForeignDataWrapperOwner(const char *name, Oid newOwnerId)
 {
 	Oid			fdwId;
 	HeapTuple	tup;
 	Relation	rel;
+	ObjectAddress address;
 
 	rel = heap_open(ForeignDataWrapperRelationId, RowExclusiveLock);
 
@@ -312,11 +313,13 @@ AlterForeignDataWrapperOwner(const char *name, Oid newOwnerId)
 
 	AlterForeignDataWrapperOwner_internal(rel, tup, newOwnerId);
 
+	ObjectAddressSet(address, ForeignDataWrapperRelationId, fdwId);
+
 	heap_freetuple(tup);
 
 	heap_close(rel, RowExclusiveLock);
 
-	return fdwId;
+	return address;
 }
 
 /*
@@ -427,12 +430,13 @@ AlterForeignServerOwner_internal(Relation rel, HeapTuple tup, Oid newOwnerId)
 /*
  * Change foreign server owner -- by name
  */
-Oid
+ObjectAddress
 AlterForeignServerOwner(const char *name, Oid newOwnerId)
 {
 	Oid			servOid;
 	HeapTuple	tup;
 	Relation	rel;
+	ObjectAddress address;
 
 	rel = heap_open(ForeignServerRelationId, RowExclusiveLock);
 
@@ -447,11 +451,13 @@ AlterForeignServerOwner(const char *name, Oid newOwnerId)
 
 	AlterForeignServerOwner_internal(rel, tup, newOwnerId);
 
+	ObjectAddressSet(address, ForeignServerRelationId, servOid);
+
 	heap_freetuple(tup);
 
 	heap_close(rel, RowExclusiveLock);
 
-	return servOid;
+	return address;
 }
 
 /*
@@ -569,7 +575,7 @@ parse_func_options(List *func_options,
 /*
  * Create a foreign-data wrapper
  */
-Oid
+ObjectAddress
 CreateForeignDataWrapper(CreateFdwStmt *stmt)
 {
 	Relation	rel;
@@ -676,14 +682,14 @@ CreateForeignDataWrapper(CreateFdwStmt *stmt)
 
 	heap_close(rel, RowExclusiveLock);
 
-	return fdwId;
+	return myself;
 }
 
 
 /*
  * Alter foreign-data wrapper
  */
-Oid
+ObjectAddress
 AlterForeignDataWrapper(AlterFdwStmt *stmt)
 {
 	Relation	rel;
@@ -699,6 +705,7 @@ AlterForeignDataWrapper(AlterFdwStmt *stmt)
 	bool		validator_given;
 	Oid			fdwhandler;
 	Oid			fdwvalidator;
+	ObjectAddress myself;
 
 	rel = heap_open(ForeignDataWrapperRelationId, RowExclusiveLock);
 
@@ -801,10 +808,11 @@ AlterForeignDataWrapper(AlterFdwStmt *stmt)
 
 	heap_freetuple(tp);
 
+	ObjectAddressSet(myself, ForeignDataWrapperRelationId, fdwId);
+
 	/* Update function dependencies if we changed them */
 	if (handler_given || validator_given)
 	{
-		ObjectAddress myself;
 		ObjectAddress referenced;
 
 		/*
@@ -817,9 +825,6 @@ AlterForeignDataWrapper(AlterFdwStmt *stmt)
 										DEPENDENCY_NORMAL);
 
 		/* And build new ones. */
-		myself.classId = ForeignDataWrapperRelationId;
-		myself.objectId = fdwId;
-		myself.objectSubId = 0;
 
 		if (OidIsValid(fdwhandler))
 		{
@@ -842,7 +847,7 @@ AlterForeignDataWrapper(AlterFdwStmt *stmt)
 
 	heap_close(rel, RowExclusiveLock);
 
-	return fdwId;
+	return myself;
 }
 
 
@@ -873,7 +878,7 @@ RemoveForeignDataWrapperById(Oid fdwId)
 /*
  * Create a foreign server
  */
-Oid
+ObjectAddress
 CreateForeignServer(CreateForeignServerStmt *stmt)
 {
 	Relation	rel;
@@ -979,14 +984,14 @@ CreateForeignServer(CreateForeignServerStmt *stmt)
 
 	heap_close(rel, RowExclusiveLock);
 
-	return srvId;
+	return myself;
 }
 
 
 /*
  * Alter foreign server
  */
-Oid
+ObjectAddress
 AlterForeignServer(AlterForeignServerStmt *stmt)
 {
 	Relation	rel;
@@ -996,6 +1001,7 @@ AlterForeignServer(AlterForeignServerStmt *stmt)
 	bool		repl_repl[Natts_pg_foreign_server];
 	Oid			srvId;
 	Form_pg_foreign_server srvForm;
+	ObjectAddress address;
 
 	rel = heap_open(ForeignServerRelationId, RowExclusiveLock);
 
@@ -1072,11 +1078,13 @@ AlterForeignServer(AlterForeignServerStmt *stmt)
 
 	InvokeObjectPostAlterHook(ForeignServerRelationId, srvId, 0);
 
+	ObjectAddressSet(address, ForeignServerRelationId, srvId);
+
 	heap_freetuple(tp);
 
 	heap_close(rel, RowExclusiveLock);
 
-	return srvId;
+	return address;
 }
 
 
@@ -1134,7 +1142,7 @@ user_mapping_ddl_aclcheck(Oid umuserid, Oid serverid, const char *servername)
 /*
  * Create user mapping
  */
-Oid
+ObjectAddress
 CreateUserMapping(CreateUserMappingStmt *stmt)
 {
 	Relation	rel;
@@ -1225,14 +1233,14 @@ CreateUserMapping(CreateUserMappingStmt *stmt)
 
 	heap_close(rel, RowExclusiveLock);
 
-	return umId;
+	return myself;
 }
 
 
 /*
  * Alter user mapping
  */
-Oid
+ObjectAddress
 AlterUserMapping(AlterUserMappingStmt *stmt)
 {
 	Relation	rel;
@@ -1243,6 +1251,7 @@ AlterUserMapping(AlterUserMappingStmt *stmt)
 	Oid			useId;
 	Oid			umId;
 	ForeignServer *srv;
+	ObjectAddress address;
 
 	rel = heap_open(UserMappingRelationId, RowExclusiveLock);
 
@@ -1309,11 +1318,13 @@ AlterUserMapping(AlterUserMappingStmt *stmt)
 	simple_heap_update(rel, &tp->t_self, tp);
 	CatalogUpdateIndexes(rel, tp);
 
+	ObjectAddressSet(address, UserMappingRelationId, umId);
+
 	heap_freetuple(tp);
 
 	heap_close(rel, RowExclusiveLock);
 
-	return umId;
+	return address;
 }
 
 

src/backend/commands/functioncmds.c

@@ -112,6 +112,7 @@ compute_return_type(TypeName *returnType, Oid languageOid,
 		Oid			namespaceId;
 		AclResult	aclresult;
 		char	   *typname;
+		ObjectAddress address;
 
 		/*
 		 * Only C-coded functions can be I/O functions.  We enforce this
@@ -144,7 +145,8 @@ compute_return_type(TypeName *returnType, Oid languageOid,
 		if (aclresult != ACLCHECK_OK)
 			aclcheck_error(aclresult, ACL_KIND_NAMESPACE,
 						   get_namespace_name(namespaceId));
-		rettype = TypeShellMake(typname, namespaceId, GetUserId());
+		address = TypeShellMake(typname, namespaceId, GetUserId());
+		rettype = address.objectId;
 		Assert(OidIsValid(rettype));
 	}
 
@@ -810,7 +812,7 @@ interpret_AS_clause(Oid languageOid, const char *languageName,
  * CreateFunction
  *	 Execute a CREATE FUNCTION utility statement.
  */
-Oid
+ObjectAddress
 CreateFunction(CreateFunctionStmt *stmt, const char *queryString)
 {
 	char	   *probin_str;
@@ -1071,7 +1073,7 @@ RemoveFunctionById(Oid funcOid)
  * RENAME and OWNER clauses, which are handled as part of the generic
  * ALTER framework).
  */
-Oid
+ObjectAddress
 AlterFunction(AlterFunctionStmt *stmt)
 {
 	HeapTuple	tup;
@@ -1086,6 +1088,7 @@ AlterFunction(AlterFunctionStmt *stmt)
 	List	   *set_items = NIL;
 	DefElem    *cost_item = NULL;
 	DefElem    *rows_item = NULL;
+	ObjectAddress address;
 
 	rel = heap_open(ProcedureRelationId, RowExclusiveLock);
 
@@ -1201,10 +1204,12 @@ AlterFunction(AlterFunctionStmt *stmt)
 
 	InvokeObjectPostAlterHook(ProcedureRelationId, funcOid, 0);
 
+	ObjectAddressSet(address, ProcedureRelationId, funcOid);
+
 	heap_close(rel, NoLock);
 	heap_freetuple(tup);
 
-	return funcOid;
+	return address;
 }
 
 /*
@@ -1282,7 +1287,7 @@ SetFunctionArgType(Oid funcOid, int argIndex, Oid newArgType)
 /*
  * CREATE CAST
  */
-Oid
+ObjectAddress
 CreateCast(CreateCastStmt *stmt)
 {
 	Oid			sourcetypeid;
@@ -1596,7 +1601,7 @@ CreateCast(CreateCastStmt *stmt)
 
 	heap_close(relation, RowExclusiveLock);
 
-	return castid;
+	return myself;
 }
 
 /*

src/backend/commands/indexcmds.c

@@ -291,9 +291,9 @@ CheckIndexCompatible(Oid oldId,
  *		it will be filled later.
  * 'quiet': suppress the NOTICE chatter ordinarily provided for constraints.
  *
- * Returns the OID of the created index.
+ * Returns the object address of the created index.
  */
-Oid
+ObjectAddress
 DefineIndex(Oid relationId,
 			IndexStmt *stmt,
 			Oid indexRelationId,
@@ -323,6 +323,7 @@ DefineIndex(Oid relationId,
 	int			numberOfAttributes;
 	TransactionId limitXmin;
 	VirtualTransactionId *old_snapshots;
+	ObjectAddress address;
 	int			n_old_snapshots;
 	LockRelId	heaprelid;
 	LOCKTAG		heaplocktag;
@@ -613,10 +614,12 @@ DefineIndex(Oid relationId,
 					 stmt->concurrent, !check_rights,
 					 stmt->if_not_exists);
 
+	ObjectAddressSet(address, RelationRelationId, indexRelationId);
+
 	if (!OidIsValid(indexRelationId))
 	{
 		heap_close(rel, NoLock);
-		return indexRelationId;
+		return address;
 	}
 
 	/* Add any requested comment */
@@ -628,7 +631,7 @@ DefineIndex(Oid relationId,
 	{
 		/* Close the heap and we're done, in the non-concurrent case */
 		heap_close(rel, NoLock);
-		return indexRelationId;
+		return address;
 	}
 
 	/* save lockrelid and locktag for below, then close rel */
@@ -873,7 +876,7 @@ DefineIndex(Oid relationId,
 	 */
 	UnlockRelationIdForSession(&heaprelid, ShareUpdateExclusiveLock);
 
-	return indexRelationId;
+	return address;
 }
 
 

src/backend/commands/matview.c

@@ -134,7 +134,7 @@ SetMatViewPopulatedState(Relation relation, bool newstate)
  * The matview's "populated" state is changed based on whether the contents
  * reflect the result set of the materialized view's query.
  */
-Oid
+ObjectAddress
 ExecRefreshMatView(RefreshMatViewStmt *stmt, const char *queryString,
 				   ParamListInfo params, char *completionTag)
 {
@@ -153,6 +153,7 @@ ExecRefreshMatView(RefreshMatViewStmt *stmt, const char *queryString,
 	Oid			save_userid;
 	int			save_sec_context;
 	int			save_nestlevel;
+	ObjectAddress address;
 
 	/* Determine strength of lock needed. */
 	concurrent = stmt->concurrent;
@@ -311,7 +312,9 @@ ExecRefreshMatView(RefreshMatViewStmt *stmt, const char *queryString,
 	/* Restore userid and security context */
 	SetUserIdAndSecContext(save_userid, save_sec_context);
 
-	return matviewOid;
+	ObjectAddressSet(address, RelationRelationId, matviewOid);
+
+	return address;
 }
 
 /*

src/backend/commands/opclasscmds.c

@@ -246,7 +246,7 @@ get_opclass_oid(Oid amID, List *opclassname, bool missing_ok)
  *
  * Caller must have done permissions checks etc. already.
  */
-static Oid
+static ObjectAddress
 CreateOpFamily(char *amname, char *opfname, Oid namespaceoid, Oid amoid)
 {
 	Oid			opfamilyoid;
@@ -319,14 +319,14 @@ CreateOpFamily(char *amname, char *opfname, Oid namespaceoid, Oid amoid)
 
 	heap_close(rel, RowExclusiveLock);
 
-	return opfamilyoid;
+	return myself;
 }
 
 /*
  * DefineOpClass
  *		Define a new index operator class.
  */
-Oid
+ObjectAddress
 DefineOpClass(CreateOpClassStmt *stmt)
 {
 	char	   *opcname;		/* name of opclass we're creating */
@@ -445,11 +445,14 @@ DefineOpClass(CreateOpClassStmt *stmt)
 		}
 		else
 		{
+			ObjectAddress tmpAddr;
+
 			/*
 			 * Create it ... again no need for more permissions ...
 			 */
-			opfamilyoid = CreateOpFamily(stmt->amname, opcname,
-										 namespaceoid, amoid);
+			tmpAddr = CreateOpFamily(stmt->amname, opcname,
+									 namespaceoid, amoid);
+			opfamilyoid = tmpAddr.objectId;
 		}
 	}
 
@@ -719,7 +722,7 @@ DefineOpClass(CreateOpClassStmt *stmt)
 
 	heap_close(rel, RowExclusiveLock);
 
-	return opclassoid;
+	return myself;
 }
 
 
@@ -727,7 +730,7 @@ DefineOpClass(CreateOpClassStmt *stmt)
  * DefineOpFamily
  *		Define a new index operator family.
  */
-Oid
+ObjectAddress
 DefineOpFamily(CreateOpFamilyStmt *stmt)
 {
 	char	   *opfname;		/* name of opfamily we're creating */

src/backend/commands/operatorcmds.c

@@ -59,7 +59,7 @@
  *
  * 'parameters' is a list of DefElem
  */
-Oid
+ObjectAddress
 DefineOperator(List *names, List *parameters)
 {
 	char	   *oprName;

src/backend/commands/policy.c

@@ -460,7 +460,7 @@ RemovePolicyById(Oid policy_id)
  *
  * stmt - the CreatePolicyStmt that describes the policy to create.
  */
-Oid
+ObjectAddress
 CreatePolicy(CreatePolicyStmt *stmt)
 {
 	Relation		pg_policy_rel;
@@ -626,7 +626,7 @@ CreatePolicy(CreatePolicyStmt *stmt)
 	relation_close(target_table, NoLock);
 	heap_close(pg_policy_rel, RowExclusiveLock);
 
-	return policy_id;
+	return myself;
 }
 
 /*
@@ -635,7 +635,7 @@ CreatePolicy(CreatePolicyStmt *stmt)
  *
  * stmt - the AlterPolicyStmt that describes the policy and how to alter it.
  */
-Oid
+ObjectAddress
 AlterPolicy(AlterPolicyStmt *stmt)
 {
 	Relation		pg_policy_rel;
@@ -830,14 +830,14 @@ AlterPolicy(AlterPolicyStmt *stmt)
 	relation_close(target_table, NoLock);
 	heap_close(pg_policy_rel, RowExclusiveLock);
 
-	return policy_id;
+	return myself;
 }
 
 /*
  * rename_policy -
  *   change the name of a policy on a relation
  */
-Oid
+ObjectAddress
 rename_policy(RenameStmt *stmt)
 {
 	Relation		pg_policy_rel;
@@ -847,6 +847,7 @@ rename_policy(RenameStmt *stmt)
 	ScanKeyData		skey[2];
 	SysScanDesc		sscan;
 	HeapTuple		policy_tuple;
+	ObjectAddress	address;
 
 	/* Get id of table.  Also handles permissions checks. */
 	table_id = RangeVarGetRelidExtended(stmt->relation, AccessExclusiveLock,
@@ -925,6 +926,8 @@ rename_policy(RenameStmt *stmt)
 	InvokeObjectPostAlterHook(PolicyRelationId,
 							  HeapTupleGetOid(policy_tuple), 0);
 
+	ObjectAddressSet(address, PolicyRelationId, opoloid);
+
 	/*
 	 * Invalidate relation's relcache entry so that other backends (and
 	 * this one too!) are sent SI message to make them rebuild relcache
@@ -937,7 +940,7 @@ rename_policy(RenameStmt *stmt)
 	heap_close(pg_policy_rel, RowExclusiveLock);
 	relation_close(target_table, NoLock);
 
-	return opoloid;
+	return address;
 }
 
 /*

src/backend/commands/proclang.c

@@ -51,7 +51,7 @@ typedef struct
 	char	   *tmpllibrary;	/* path of shared library */
 } PLTemplate;
 
-static Oid create_proc_lang(const char *languageName, bool replace,
+static ObjectAddress create_proc_lang(const char *languageName, bool replace,
 				 Oid languageOwner, Oid handlerOid, Oid inlineOid,
 				 Oid valOid, bool trusted);
 static PLTemplate *find_language_template(const char *languageName);
@@ -60,10 +60,11 @@ static PLTemplate *find_language_template(const char *languageName);
  * CREATE PROCEDURAL LANGUAGE
  * ---------------------------------------------------------------------
  */
-Oid
+ObjectAddress
 CreateProceduralLanguage(CreatePLangStmt *stmt)
 {
 	PLTemplate *pltemplate;
+	ObjectAddress tmpAddr;
 	Oid			handlerOid,
 				inlineOid,
 				valOid;
@@ -118,30 +119,31 @@ CreateProceduralLanguage(CreatePLangStmt *stmt)
 		}
 		else
 		{
-			handlerOid = ProcedureCreate(pltemplate->tmplhandler,
-										 PG_CATALOG_NAMESPACE,
-										 false, /* replace */
-										 false, /* returnsSet */
-										 LANGUAGE_HANDLEROID,
-										 BOOTSTRAP_SUPERUSERID,
-										 ClanguageId,
-										 F_FMGR_C_VALIDATOR,
-										 pltemplate->tmplhandler,
-										 pltemplate->tmpllibrary,
-										 false, /* isAgg */
-										 false, /* isWindowFunc */
-										 false, /* security_definer */
-										 false, /* isLeakProof */
-										 false, /* isStrict */
-										 PROVOLATILE_VOLATILE,
-										 buildoidvector(funcargtypes, 0),
-										 PointerGetDatum(NULL),
-										 PointerGetDatum(NULL),
-										 PointerGetDatum(NULL),
-										 NIL,
-										 PointerGetDatum(NULL),
-										 1,
-										 0);
+			tmpAddr = ProcedureCreate(pltemplate->tmplhandler,
+									  PG_CATALOG_NAMESPACE,
+									  false,	/* replace */
+									  false,	/* returnsSet */
+									  LANGUAGE_HANDLEROID,
+									  BOOTSTRAP_SUPERUSERID,
+									  ClanguageId,
+									  F_FMGR_C_VALIDATOR,
+									  pltemplate->tmplhandler,
+									  pltemplate->tmpllibrary,
+									  false,	/* isAgg */
+									  false,	/* isWindowFunc */
+									  false,	/* security_definer */
+									  false,	/* isLeakProof */
+									  false,	/* isStrict */
+									  PROVOLATILE_VOLATILE,
+									  buildoidvector(funcargtypes, 0),
+									  PointerGetDatum(NULL),
+									  PointerGetDatum(NULL),
+									  PointerGetDatum(NULL),
+									  NIL,
+									  PointerGetDatum(NULL),
+									  1,
+									  0);
+			handlerOid = tmpAddr.objectId;
 		}
 
 		/*
@@ -155,30 +157,31 @@ CreateProceduralLanguage(CreatePLangStmt *stmt)
 			inlineOid = LookupFuncName(funcname, 1, funcargtypes, true);
 			if (!OidIsValid(inlineOid))
 			{
-				inlineOid = ProcedureCreate(pltemplate->tmplinline,
-											PG_CATALOG_NAMESPACE,
-											false,		/* replace */
-											false,		/* returnsSet */
-											VOIDOID,
-											BOOTSTRAP_SUPERUSERID,
-											ClanguageId,
-											F_FMGR_C_VALIDATOR,
-											pltemplate->tmplinline,
-											pltemplate->tmpllibrary,
-											false,		/* isAgg */
-											false,		/* isWindowFunc */
-											false,		/* security_definer */
-											false,		/* isLeakProof */
-											true,		/* isStrict */
-											PROVOLATILE_VOLATILE,
-											buildoidvector(funcargtypes, 1),
-											PointerGetDatum(NULL),
-											PointerGetDatum(NULL),
-											PointerGetDatum(NULL),
-											NIL,
-											PointerGetDatum(NULL),
-											1,
-											0);
+				tmpAddr = ProcedureCreate(pltemplate->tmplinline,
+										  PG_CATALOG_NAMESPACE,
+										  false,		/* replace */
+										  false,		/* returnsSet */
+										  VOIDOID,
+										  BOOTSTRAP_SUPERUSERID,
+										  ClanguageId,
+										  F_FMGR_C_VALIDATOR,
+										  pltemplate->tmplinline,
+										  pltemplate->tmpllibrary,
+										  false,		/* isAgg */
+										  false,		/* isWindowFunc */
+										  false,		/* security_definer */
+										  false,		/* isLeakProof */
+										  true, /* isStrict */
+										  PROVOLATILE_VOLATILE,
+										  buildoidvector(funcargtypes, 1),
+										  PointerGetDatum(NULL),
+										  PointerGetDatum(NULL),
+										  PointerGetDatum(NULL),
+										  NIL,
+										  PointerGetDatum(NULL),
+										  1,
+										  0);
+				inlineOid = tmpAddr.objectId;
 			}
 		}
 		else
@@ -195,30 +198,31 @@ CreateProceduralLanguage(CreatePLangStmt *stmt)
 			valOid = LookupFuncName(funcname, 1, funcargtypes, true);
 			if (!OidIsValid(valOid))
 			{
-				valOid = ProcedureCreate(pltemplate->tmplvalidator,
-										 PG_CATALOG_NAMESPACE,
-										 false, /* replace */
-										 false, /* returnsSet */
-										 VOIDOID,
-										 BOOTSTRAP_SUPERUSERID,
-										 ClanguageId,
-										 F_FMGR_C_VALIDATOR,
-										 pltemplate->tmplvalidator,
-										 pltemplate->tmpllibrary,
-										 false, /* isAgg */
-										 false, /* isWindowFunc */
-										 false, /* security_definer */
-										 false, /* isLeakProof */
-										 true,	/* isStrict */
-										 PROVOLATILE_VOLATILE,
-										 buildoidvector(funcargtypes, 1),
-										 PointerGetDatum(NULL),
-										 PointerGetDatum(NULL),
-										 PointerGetDatum(NULL),
-										 NIL,
-										 PointerGetDatum(NULL),
-										 1,
-										 0);
+				tmpAddr = ProcedureCreate(pltemplate->tmplvalidator,
+										  PG_CATALOG_NAMESPACE,
+										  false,		/* replace */
+										  false,		/* returnsSet */
+										  VOIDOID,
+										  BOOTSTRAP_SUPERUSERID,
+										  ClanguageId,
+										  F_FMGR_C_VALIDATOR,
+										  pltemplate->tmplvalidator,
+										  pltemplate->tmpllibrary,
+										  false,		/* isAgg */
+										  false,		/* isWindowFunc */
+										  false,		/* security_definer */
+										  false,		/* isLeakProof */
+										  true, /* isStrict */
+										  PROVOLATILE_VOLATILE,
+										  buildoidvector(funcargtypes, 1),
+										  PointerGetDatum(NULL),
+										  PointerGetDatum(NULL),
+										  PointerGetDatum(NULL),
+										  NIL,
+										  PointerGetDatum(NULL),
+										  1,
+										  0);
+				valOid = tmpAddr.objectId;
 			}
 		}
 		else
@@ -309,7 +313,7 @@ CreateProceduralLanguage(CreatePLangStmt *stmt)
 /*
  * Guts of language creation.
  */
-static Oid
+static ObjectAddress
 create_proc_lang(const char *languageName, bool replace,
 				 Oid languageOwner, Oid handlerOid, Oid inlineOid,
 				 Oid valOid, bool trusted)
@@ -433,7 +437,7 @@ create_proc_lang(const char *languageName, bool replace,
 
 	heap_close(rel, RowExclusiveLock);
 
-	return myself.objectId;
+	return myself;
 }
 
 /*

src/backend/commands/schemacmds.c

@@ -195,13 +195,14 @@ RemoveSchemaById(Oid schemaOid)
 /*
  * Rename schema
  */
-Oid
+ObjectAddress
 RenameSchema(const char *oldname, const char *newname)
 {
 	Oid			nspOid;
 	HeapTuple	tup;
 	Relation	rel;
 	AclResult	aclresult;
+	ObjectAddress address;
 
 	rel = heap_open(NamespaceRelationId, RowExclusiveLock);
 
@@ -243,10 +244,12 @@ RenameSchema(const char *oldname, const char *newname)
 
 	InvokeObjectPostAlterHook(NamespaceRelationId, HeapTupleGetOid(tup), 0);
 
+	ObjectAddressSet(address, NamespaceRelationId, nspOid);
+
 	heap_close(rel, NoLock);
 	heap_freetuple(tup);
 
-	return nspOid;
+	return address;
 }
 
 void
@@ -272,12 +275,13 @@ AlterSchemaOwner_oid(Oid oid, Oid newOwnerId)
 /*
  * Change schema owner
  */
-Oid
+ObjectAddress
 AlterSchemaOwner(const char *name, Oid newOwnerId)
 {
 	Oid			nspOid;
 	HeapTuple	tup;
 	Relation	rel;
+	ObjectAddress address;
 
 	rel = heap_open(NamespaceRelationId, RowExclusiveLock);
 
@@ -291,11 +295,13 @@ AlterSchemaOwner(const char *name, Oid newOwnerId)
 
 	AlterSchemaOwner_internal(tup, rel, newOwnerId);
 
+	ObjectAddressSet(address, NamespaceRelationId, nspOid);
+
 	ReleaseSysCache(tup);
 
 	heap_close(rel, RowExclusiveLock);
 
-	return nspOid;
+	return address;
 }
 
 static void

src/backend/commands/seclabel.c

@@ -37,8 +37,10 @@ static List *label_provider_list = NIL;
  * ExecSecLabelStmt --
  *
  * Apply a security label to a database object.
+ *
+ * Returns the ObjectAddress of the object to which the policy was applied.
  */
-Oid
+ObjectAddress
 ExecSecLabelStmt(SecLabelStmt *stmt)
 {
 	LabelProvider *provider = NULL;
@@ -133,7 +135,7 @@ ExecSecLabelStmt(SecLabelStmt *stmt)
 	if (relation != NULL)
 		relation_close(relation, NoLock);
 
-	return address.objectId;
+	return address;
 }
 
 /*

src/backend/commands/sequence.c

@@ -104,13 +104,14 @@ static void process_owned_by(Relation seqrel, List *owned_by);
  * DefineSequence
  *				Creates a new sequence relation
  */
-Oid
+ObjectAddress
 DefineSequence(CreateSeqStmt *seq)
 {
 	FormData_pg_sequence new;
 	List	   *owned_by;
 	CreateStmt *stmt = makeNode(CreateStmt);
 	Oid			seqoid;
+	ObjectAddress address;
 	Relation	rel;
 	HeapTuple	tuple;
 	TupleDesc	tupDesc;
@@ -139,7 +140,7 @@ DefineSequence(CreateSeqStmt *seq)
 					(errcode(ERRCODE_DUPLICATE_TABLE),
 					 errmsg("relation \"%s\" already exists, skipping",
 							seq->sequence->relname)));
-			return InvalidOid;
+			return InvalidObjectAddress;
 		}
 	}
 
@@ -233,7 +234,8 @@ DefineSequence(CreateSeqStmt *seq)
 	stmt->tablespacename = NULL;
 	stmt->if_not_exists = seq->if_not_exists;
 
-	seqoid = DefineRelation(stmt, RELKIND_SEQUENCE, seq->ownerId);
+	address = DefineRelation(stmt, RELKIND_SEQUENCE, seq->ownerId, NULL);
+	seqoid = address.objectId;
 	Assert(seqoid != InvalidOid);
 
 	rel = heap_open(seqoid, AccessExclusiveLock);
@@ -249,7 +251,7 @@ DefineSequence(CreateSeqStmt *seq)
 
 	heap_close(rel, NoLock);
 
-	return seqoid;
+	return address;
 }
 
 /*
@@ -401,7 +403,7 @@ fill_seq_with_data(Relation rel, HeapTuple tuple)
  *
  * Modify the definition of a sequence relation
  */
-Oid
+ObjectAddress
 AlterSequence(AlterSeqStmt *stmt)
 {
 	Oid			relid;
@@ -412,6 +414,7 @@ AlterSequence(AlterSeqStmt *stmt)
 	Form_pg_sequence seq;
 	FormData_pg_sequence new;
 	List	   *owned_by;
+	ObjectAddress address;
 
 	/* Open and lock sequence. */
 	relid = RangeVarGetRelid(stmt->sequence, AccessShareLock, stmt->missing_ok);
@@ -420,7 +423,7 @@ AlterSequence(AlterSeqStmt *stmt)
 		ereport(NOTICE,
 				(errmsg("relation \"%s\" does not exist, skipping",
 						stmt->sequence->relname)));
-		return InvalidOid;
+		return InvalidObjectAddress;
 	}
 
 	init_sequence(relid, &elm, &seqrel);
@@ -484,9 +487,11 @@ AlterSequence(AlterSeqStmt *stmt)
 
 	InvokeObjectPostAlterHook(RelationRelationId, relid, 0);
 
+	ObjectAddressSet(address, RelationRelationId, relid);
+
 	relation_close(seqrel, NoLock);
 
-	return relid;
+	return address;
 }
 
 

src/backend/commands/tablecmds.c

@@ -435,17 +435,19 @@ static void RangeVarCallbackForAlterRelation(const RangeVar *rv, Oid relid,
  * The other arguments are used to extend the behavior for other cases:
  * relkind: relkind to assign to the new relation
  * ownerId: if not InvalidOid, use this as the new relation's owner.
+ * typaddress: if not null, it's set to the pg_type entry's address.
  *
  * Note that permissions checks are done against current user regardless of
  * ownerId.  A nonzero ownerId is used when someone is creating a relation
  * "on behalf of" someone else, so we still want to see that the current user
  * has permissions to do it.
  *
- * If successful, returns the OID of the new relation.
+ * If successful, returns the address of the new relation.
  * ----------------------------------------------------------------
  */
-Oid
-DefineRelation(CreateStmt *stmt, char relkind, Oid ownerId)
+ObjectAddress
+DefineRelation(CreateStmt *stmt, char relkind, Oid ownerId,
+			   ObjectAddress *typaddress)
 {
 	char		relname[NAMEDATALEN];
 	Oid			namespaceId;
@@ -465,6 +467,7 @@ DefineRelation(CreateStmt *stmt, char relkind, Oid ownerId)
 	AttrNumber	attnum;
 	static char *validnsps[] = HEAP_RELOPT_NAMESPACES;
 	Oid			ofTypeId;
+	ObjectAddress address;
 
 	/*
 	 * Truncate relname to appropriate length (probably a waste of time, as
@@ -657,7 +660,8 @@ DefineRelation(CreateStmt *stmt, char relkind, Oid ownerId)
 										  reloptions,
 										  true,
 										  allowSystemTableMods,
-										  false);
+										  false,
+										  typaddress);
 
 	/* Store inheritance information for new rel. */
 	StoreCatalogInheritance(relationId, inheritOids);
@@ -689,13 +693,15 @@ DefineRelation(CreateStmt *stmt, char relkind, Oid ownerId)
 		AddRelationNewConstraints(rel, rawDefaults, stmt->constraints,
 								  true, true, false);
 
+	ObjectAddressSet(address, RelationRelationId, relationId);
+
 	/*
 	 * Clean up.  We keep lock on new relation (although it shouldn't be
 	 * visible to anyone else anyway, until commit).
 	 */
 	relation_close(rel, NoLock);
 
-	return relationId;
+	return address;
 }
 
 /*
@@ -2158,8 +2164,10 @@ renameatt_check(Oid myrelid, Form_pg_class classform, bool recursing)
 
 /*
  *		renameatt_internal		- workhorse for renameatt
+ *
+ * Return value is the attribute number in the 'myrelid' relation.
  */
-static void
+static AttrNumber
 renameatt_internal(Oid myrelid,
 				   const char *oldattname,
 				   const char *newattname,
@@ -2172,7 +2180,7 @@ renameatt_internal(Oid myrelid,
 	Relation	attrelation;
 	HeapTuple	atttup;
 	Form_pg_attribute attform;
-	int			attnum;
+	AttrNumber	attnum;
 
 	/*
 	 * Grab an exclusive lock on the target table, which we will NOT release
@@ -2300,6 +2308,8 @@ renameatt_internal(Oid myrelid,
 	heap_close(attrelation, RowExclusiveLock);
 
 	relation_close(targetrelation, NoLock);		/* close rel but keep lock */
+
+	return attnum;
 }
 
 /*
@@ -2322,11 +2332,15 @@ RangeVarCallbackForRenameAttribute(const RangeVar *rv, Oid relid, Oid oldrelid,
 
 /*
  *		renameatt		- changes the name of a attribute in a relation
+ *
+ * The returned ObjectAddress is that of the renamed column.
  */
-Oid
+ObjectAddress
 renameatt(RenameStmt *stmt)
 {
 	Oid			relid;
+	AttrNumber	attnum;
+	ObjectAddress address;
 
 	/* lock level taken here should match renameatt_internal */
 	relid = RangeVarGetRelidExtended(stmt->relation, AccessExclusiveLock,
@@ -2339,26 +2353,27 @@ renameatt(RenameStmt *stmt)
 		ereport(NOTICE,
 				(errmsg("relation \"%s\" does not exist, skipping",
 						stmt->relation->relname)));
-		return InvalidOid;
+		return InvalidObjectAddress;
 	}
 
-	renameatt_internal(relid,
-					   stmt->subname,	/* old att name */
-					   stmt->newname,	/* new att name */
-					   interpretInhOption(stmt->relation->inhOpt),		/* recursive? */
-					   false,	/* recursing? */
-					   0,		/* expected inhcount */
-					   stmt->behavior);
+	attnum =
+		renameatt_internal(relid,
+						   stmt->subname,		/* old att name */
+						   stmt->newname,		/* new att name */
+						   interpretInhOption(stmt->relation->inhOpt),	/* recursive? */
+						   false,		/* recursing? */
+						   0,	/* expected inhcount */
+						   stmt->behavior);
 
-	/* This is an ALTER TABLE command so it's about the relid */
-	return relid;
-}
+	ObjectAddressSubSet(address, RelationRelationId, relid, attnum);
 
+	return address;
+}
 
 /*
  * same logic as renameatt_internal
  */
-static Oid
+static ObjectAddress
 rename_constraint_internal(Oid myrelid,
 						   Oid mytypid,
 						   const char *oldconname,
@@ -2371,6 +2386,7 @@ rename_constraint_internal(Oid myrelid,
 	Oid			constraintOid;
 	HeapTuple	tuple;
 	Form_pg_constraint con;
+	ObjectAddress address;
 
 	AssertArg(!myrelid || !mytypid);
 
@@ -2446,15 +2462,17 @@ rename_constraint_internal(Oid myrelid,
 	else
 		RenameConstraintById(constraintOid, newconname);
 
+	ObjectAddressSet(address, ConstraintRelationId, constraintOid);
+
 	ReleaseSysCache(tuple);
 
 	if (targetrelation)
 		relation_close(targetrelation, NoLock); /* close rel but keep lock */
 
-	return constraintOid;
+	return address;
 }
 
-Oid
+ObjectAddress
 RenameConstraint(RenameStmt *stmt)
 {
 	Oid			relid = InvalidOid;
@@ -2497,10 +2515,11 @@ RenameConstraint(RenameStmt *stmt)
  * Execute ALTER TABLE/INDEX/SEQUENCE/VIEW/MATERIALIZED VIEW/FOREIGN TABLE
  * RENAME
  */
-Oid
+ObjectAddress
 RenameRelation(RenameStmt *stmt)
 {
 	Oid			relid;
+	ObjectAddress address;
 
 	/*
 	 * Grab an exclusive lock on the target table, index, sequence, view,
@@ -2520,13 +2539,15 @@ RenameRelation(RenameStmt *stmt)
 		ereport(NOTICE,
 				(errmsg("relation \"%s\" does not exist, skipping",
 						stmt->relation->relname)));
-		return InvalidOid;
+		return InvalidObjectAddress;
 	}
 
 	/* Do the work */
 	RenameRelationInternal(relid, stmt->newname, false);
 
-	return relid;
+	ObjectAddressSet(address, RelationRelationId, relid);
+
+	return address;
 }
 
 /*
@@ -5702,7 +5723,7 @@ ATExecAddIndex(AlteredTableInfo *tab, Relation rel,
 	bool		check_rights;
 	bool		skip_build;
 	bool		quiet;
-	Oid			new_index;
+	ObjectAddress address;
 
 	Assert(IsA(stmt, IndexStmt));
 	Assert(!stmt->concurrent);
@@ -5717,13 +5738,13 @@ ATExecAddIndex(AlteredTableInfo *tab, Relation rel,
 	/* suppress notices when rebuilding existing index */
 	quiet = is_rebuild;
 
-	new_index = DefineIndex(RelationGetRelid(rel),
-							stmt,
-							InvalidOid, /* no predefined OID */
-							true,		/* is_alter_table */
-							check_rights,
-							skip_build,
-							quiet);
+	address = DefineIndex(RelationGetRelid(rel),
+						  stmt,
+						  InvalidOid,	/* no predefined OID */
+						  true, /* is_alter_table */
+						  check_rights,
+						  skip_build,
+						  quiet);
 
 	/*
 	 * If TryReuseIndex() stashed a relfilenode for us, we used it for the new
@@ -5733,7 +5754,7 @@ ATExecAddIndex(AlteredTableInfo *tab, Relation rel,
 	 */
 	if (OidIsValid(stmt->oldNode))
 	{
-		Relation	irel = index_open(new_index, NoLock);
+		Relation	irel = index_open(address.objectId, NoLock);
 
 		RelationPreserveStorage(irel->rd_node, true);
 		index_close(irel, NoLock);
@@ -10919,8 +10940,8 @@ ATPrepChangePersistence(Relation rel, bool toLogged)
 /*
  * Execute ALTER TABLE SET SCHEMA
  */
-Oid
-AlterTableNamespace(AlterObjectSchemaStmt *stmt)
+ObjectAddress
+AlterTableNamespace(AlterObjectSchemaStmt *stmt, Oid *oldschema)
 {
 	Relation	rel;
 	Oid			relid;
@@ -10928,6 +10949,7 @@ AlterTableNamespace(AlterObjectSchemaStmt *stmt)
 	Oid			nspOid;
 	RangeVar   *newrv;
 	ObjectAddresses *objsMoved;
+	ObjectAddress myself;
 
 	relid = RangeVarGetRelidExtended(stmt->relation, AccessExclusiveLock,
 									 stmt->missing_ok, false,
@@ -10939,7 +10961,7 @@ AlterTableNamespace(AlterObjectSchemaStmt *stmt)
 		ereport(NOTICE,
 				(errmsg("relation \"%s\" does not exist, skipping",
 						stmt->relation->relname)));
-		return InvalidOid;
+		return InvalidObjectAddress;
 	}
 
 	rel = relation_open(relid, NoLock);
@@ -10972,10 +10994,15 @@ AlterTableNamespace(AlterObjectSchemaStmt *stmt)
 	AlterTableNamespaceInternal(rel, oldNspOid, nspOid, objsMoved);
 	free_object_addresses(objsMoved);
 
+	ObjectAddressSet(myself, RelationRelationId, relid);
+
+	if (oldschema)
+		*oldschema = oldNspOid;
+
 	/* close rel, but keep lock until commit */
 	relation_close(rel, NoLock);
 
-	return relid;
+	return myself;
 }
 
 /*

src/backend/commands/tablespace.c

@@ -846,7 +846,7 @@ directory_is_empty(const char *path)
 /*
  * Rename a tablespace
  */
-Oid
+ObjectAddress
 RenameTableSpace(const char *oldname, const char *newname)
 {
 	Oid			tspId;
@@ -856,6 +856,7 @@ RenameTableSpace(const char *oldname, const char *newname)
 	HeapTuple	tup;
 	HeapTuple	newtuple;
 	Form_pg_tablespace newform;
+	ObjectAddress address;
 
 	/* Search pg_tablespace */
 	rel = heap_open(TableSpaceRelationId, RowExclusiveLock);
@@ -912,9 +913,11 @@ RenameTableSpace(const char *oldname, const char *newname)
 
 	InvokeObjectPostAlterHook(TableSpaceRelationId, tspId, 0);
 
+	ObjectAddressSet(address, TableSpaceRelationId, tspId);
+
 	heap_close(rel, NoLock);
 
-	return tspId;
+	return address;
 }
 
 /*

src/backend/commands/trigger.c

@@ -100,7 +100,7 @@ static void AfterTriggerEnlargeQueryState(void);
 
 
 /*
- * Create a trigger.  Returns the OID of the created trigger.
+ * Create a trigger.  Returns the address of the created trigger.
  *
  * queryString is the source text of the CREATE TRIGGER command.
  * This must be supplied if a whenClause is specified, else it can be NULL.
@@ -129,10 +129,11 @@ static void AfterTriggerEnlargeQueryState(void);
  * relation, as well as ACL_EXECUTE on the trigger function.  For internal
  * triggers the caller must apply any required permission checks.
  *
- * Note: can return InvalidOid if we decided to not create a trigger at all,
- * but a foreign-key constraint.  This is a kluge for backwards compatibility.
+ * Note: can return InvalidObjectAddress if we decided to not create a trigger
+ * at all, but a foreign-key constraint.  This is a kluge for backwards
+ * compatibility.
  */
-Oid
+ObjectAddress
 CreateTrigger(CreateTrigStmt *stmt, const char *queryString,
 			  Oid relOid, Oid refRelOid, Oid constraintOid, Oid indexOid,
 			  bool isInternal)
@@ -459,7 +460,7 @@ CreateTrigger(CreateTrigStmt *stmt, const char *queryString,
 
 		ConvertTriggerToFK(stmt, funcoid);
 
-		return InvalidOid;
+		return InvalidObjectAddress;
 	}
 
 	/*
@@ -799,7 +800,7 @@ CreateTrigger(CreateTrigStmt *stmt, const char *queryString,
 	/* Keep lock on target rel until end of xact */
 	heap_close(rel, NoLock);
 
-	return trigoid;
+	return myself;
 }
 
 
@@ -1249,7 +1250,7 @@ RangeVarCallbackForRenameTrigger(const RangeVar *rv, Oid relid, Oid oldrelid,
  *		modify tgname in trigger tuple
  *		update row in catalog
  */
-Oid
+ObjectAddress
 renametrig(RenameStmt *stmt)
 {
 	Oid			tgoid;
@@ -1259,6 +1260,7 @@ renametrig(RenameStmt *stmt)
 	SysScanDesc tgscan;
 	ScanKeyData key[2];
 	Oid			relid;
+	ObjectAddress address;
 
 	/*
 	 * Look up name, check permissions, and acquire lock (which we will NOT
@@ -1351,6 +1353,8 @@ renametrig(RenameStmt *stmt)
 						stmt->subname, RelationGetRelationName(targetrel))));
 	}
 
+	ObjectAddressSet(address, TriggerRelationId, tgoid);
+
 	systable_endscan(tgscan);
 
 	heap_close(tgrel, RowExclusiveLock);
@@ -1360,7 +1364,7 @@ renametrig(RenameStmt *stmt)
 	 */
 	relation_close(targetrel, NoLock);
 
-	return tgoid;
+	return address;
 }
 
 

src/backend/commands/tsearchcmds.c

@@ -120,8 +120,10 @@ get_ts_parser_func(DefElem *defel, int attnum)
 
 /*
  * make pg_depend entries for a new pg_ts_parser entry
+ *
+ * Return value is the address of said new entry.
  */
-static void
+static ObjectAddress
 makeParserDependencies(HeapTuple tuple)
 {
 	Form_pg_ts_parser prs = (Form_pg_ts_parser) GETSTRUCT(tuple);
@@ -162,12 +164,14 @@ makeParserDependencies(HeapTuple tuple)
 		referenced.objectId = prs->prsheadline;
 		recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
 	}
+
+	return myself;
 }
 
 /*
  * CREATE TEXT SEARCH PARSER
  */
-Oid
+ObjectAddress
 DefineTSParser(List *names, List *parameters)
 {
 	char	   *prsname;
@@ -179,6 +183,7 @@ DefineTSParser(List *names, List *parameters)
 	NameData	pname;
 	Oid			prsOid;
 	Oid			namespaceoid;
+	ObjectAddress address;
 
 	if (!superuser())
 		ereport(ERROR,
@@ -269,7 +274,7 @@ DefineTSParser(List *names, List *parameters)
 
 	CatalogUpdateIndexes(prsRel, tup);
 
-	makeParserDependencies(tup);
+	address = makeParserDependencies(tup);
 
 	/* Post creation hook for new text search parser */
 	InvokeObjectPostCreateHook(TSParserRelationId, prsOid, 0);
@@ -278,7 +283,7 @@ DefineTSParser(List *names, List *parameters)
 
 	heap_close(prsRel, RowExclusiveLock);
 
-	return prsOid;
+	return address;
 }
 
 /*
@@ -308,8 +313,10 @@ RemoveTSParserById(Oid prsId)
 
 /*
  * make pg_depend entries for a new pg_ts_dict entry
+ *
+ * Return value is address of the new entry
  */
-static void
+static ObjectAddress
 makeDictionaryDependencies(HeapTuple tuple)
 {
 	Form_pg_ts_dict dict = (Form_pg_ts_dict) GETSTRUCT(tuple);
@@ -337,6 +344,8 @@ makeDictionaryDependencies(HeapTuple tuple)
 	referenced.objectId = dict->dicttemplate;
 	referenced.objectSubId = 0;
 	recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
+
+	return myself;
 }
 
 /*
@@ -397,7 +406,7 @@ verify_dictoptions(Oid tmplId, List *dictoptions)
 /*
  * CREATE TEXT SEARCH DICTIONARY
  */
-Oid
+ObjectAddress
 DefineTSDictionary(List *names, List *parameters)
 {
 	ListCell   *pl;
@@ -412,6 +421,7 @@ DefineTSDictionary(List *names, List *parameters)
 	Oid			namespaceoid;
 	AclResult	aclresult;
 	char	   *dictname;
+	ObjectAddress address;
 
 	/* Convert list of names to a name and namespace */
 	namespaceoid = QualifiedNameGetCreationNamespace(names, &dictname);
@@ -475,7 +485,7 @@ DefineTSDictionary(List *names, List *parameters)
 
 	CatalogUpdateIndexes(dictRel, tup);
 
-	makeDictionaryDependencies(tup);
+	address = makeDictionaryDependencies(tup);
 
 	/* Post creation hook for new text search dictionary */
 	InvokeObjectPostCreateHook(TSDictionaryRelationId, dictOid, 0);
@@ -484,7 +494,7 @@ DefineTSDictionary(List *names, List *parameters)
 
 	heap_close(dictRel, RowExclusiveLock);
 
-	return dictOid;
+	return address;
 }
 
 /*
@@ -514,7 +524,7 @@ RemoveTSDictionaryById(Oid dictId)
 /*
  * ALTER TEXT SEARCH DICTIONARY
  */
-Oid
+ObjectAddress
 AlterTSDictionary(AlterTSDictionaryStmt *stmt)
 {
 	HeapTuple	tup,
@@ -528,6 +538,7 @@ AlterTSDictionary(AlterTSDictionaryStmt *stmt)
 	Datum		repl_val[Natts_pg_ts_dict];
 	bool		repl_null[Natts_pg_ts_dict];
 	bool		repl_repl[Natts_pg_ts_dict];
+	ObjectAddress address;
 
 	dictId = get_ts_dict_oid(stmt->dictname, false);
 
@@ -614,6 +625,8 @@ AlterTSDictionary(AlterTSDictionaryStmt *stmt)
 
 	InvokeObjectPostAlterHook(TSDictionaryRelationId, dictId, 0);
 
+	ObjectAddressSet(address, TSDictionaryRelationId, dictId);
+
 	/*
 	 * NOTE: because we only support altering the options, not the template,
 	 * there is no need to update dependencies.  This might have to change if
@@ -625,7 +638,7 @@ AlterTSDictionary(AlterTSDictionaryStmt *stmt)
 
 	heap_close(rel, RowExclusiveLock);
 
-	return dictId;
+	return address;
 }
 
 /* ---------------------- TS Template commands -----------------------*/
@@ -678,7 +691,7 @@ get_ts_template_func(DefElem *defel, int attnum)
 /*
  * make pg_depend entries for a new pg_ts_template entry
  */
-static void
+static ObjectAddress
 makeTSTemplateDependencies(HeapTuple tuple)
 {
 	Form_pg_ts_template tmpl = (Form_pg_ts_template) GETSTRUCT(tuple);
@@ -710,12 +723,14 @@ makeTSTemplateDependencies(HeapTuple tuple)
 		referenced.objectId = tmpl->tmplinit;
 		recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
 	}
+
+	return myself;
 }
 
 /*
  * CREATE TEXT SEARCH TEMPLATE
  */
-Oid
+ObjectAddress
 DefineTSTemplate(List *names, List *parameters)
 {
 	ListCell   *pl;
@@ -728,6 +743,7 @@ DefineTSTemplate(List *names, List *parameters)
 	Oid			tmplOid;
 	Oid			namespaceoid;
 	char	   *tmplname;
+	ObjectAddress address;
 
 	if (!superuser())
 		ereport(ERROR,
@@ -793,7 +809,7 @@ DefineTSTemplate(List *names, List *parameters)
 
 	CatalogUpdateIndexes(tmplRel, tup);
 
-	makeTSTemplateDependencies(tup);
+	address = makeTSTemplateDependencies(tup);
 
 	/* Post creation hook for new text search template */
 	InvokeObjectPostCreateHook(TSTemplateRelationId, tmplOid, 0);
@@ -802,7 +818,7 @@ DefineTSTemplate(List *names, List *parameters)
 
 	heap_close(tmplRel, RowExclusiveLock);
 
-	return tmplOid;
+	return address;
 }
 
 /*
@@ -860,7 +876,7 @@ GetTSConfigTuple(List *names)
  * Pass opened pg_ts_config_map relation if there might be any config map
  * entries for the config.
  */
-static void
+static ObjectAddress
 makeConfigurationDependencies(HeapTuple tuple, bool removeOld,
 							  Relation mapRel)
 {
@@ -940,12 +956,14 @@ makeConfigurationDependencies(HeapTuple tuple, bool removeOld,
 	record_object_address_dependencies(&myself, addrs, DEPENDENCY_NORMAL);
 
 	free_object_addresses(addrs);
+
+	return myself;
 }
 
 /*
  * CREATE TEXT SEARCH CONFIGURATION
  */
-Oid
+ObjectAddress
 DefineTSConfiguration(List *names, List *parameters)
 {
 	Relation	cfgRel;
@@ -961,6 +979,7 @@ DefineTSConfiguration(List *names, List *parameters)
 	Oid			prsOid = InvalidOid;
 	Oid			cfgOid;
 	ListCell   *pl;
+	ObjectAddress address;
 
 	/* Convert list of names to a name and namespace */
 	namespaceoid = QualifiedNameGetCreationNamespace(names, &cfgname);
@@ -1088,7 +1107,7 @@ DefineTSConfiguration(List *names, List *parameters)
 		systable_endscan(scan);
 	}
 
-	makeConfigurationDependencies(tup, false, mapRel);
+	address = makeConfigurationDependencies(tup, false, mapRel);
 
 	/* Post creation hook for new text search configuration */
 	InvokeObjectPostCreateHook(TSConfigRelationId, cfgOid, 0);
@@ -1099,7 +1118,7 @@ DefineTSConfiguration(List *names, List *parameters)
 		heap_close(mapRel, RowExclusiveLock);
 	heap_close(cfgRel, RowExclusiveLock);
 
-	return cfgOid;
+	return address;
 }
 
 /*
@@ -1153,12 +1172,13 @@ RemoveTSConfigurationById(Oid cfgId)
 /*
  * ALTER TEXT SEARCH CONFIGURATION - main entry point
  */
-Oid
+ObjectAddress
 AlterTSConfiguration(AlterTSConfigurationStmt *stmt)
 {
 	HeapTuple	tup;
 	Oid			cfgId;
 	Relation	relMap;
+	ObjectAddress address;
 
 	/* Find the configuration */
 	tup = GetTSConfigTuple(stmt->cfgname);
@@ -1189,11 +1209,13 @@ AlterTSConfiguration(AlterTSConfigurationStmt *stmt)
 	InvokeObjectPostAlterHook(TSConfigMapRelationId,
 							  HeapTupleGetOid(tup), 0);
 
+	ObjectAddressSet(address, TSConfigMapRelationId, cfgId);
+
 	heap_close(relMap, RowExclusiveLock);
 
 	ReleaseSysCache(tup);
 
-	return cfgId;
+	return address;
 }
 
 /*

src/backend/commands/typecmds.c

@@ -101,14 +101,14 @@ static void checkEnumOwner(HeapTuple tup);
 static char *domainAddConstraint(Oid domainOid, Oid domainNamespace,
 					Oid baseTypeOid,
 					int typMod, Constraint *constr,
-					char *domainName);
+					char *domainName, ObjectAddress *constrAddr);
 
 
 /*
  * DefineType
  *		Registers a new base type.
  */
-Oid
+ObjectAddress
 DefineType(List *names, List *parameters)
 {
 	char	   *typeName;
@@ -160,6 +160,7 @@ DefineType(List *names, List *parameters)
 	Oid			typoid;
 	Oid			resulttype;
 	ListCell   *pl;
+	ObjectAddress address;
 
 	/*
 	 * As of Postgres 8.4, we require superuser privilege to create a base
@@ -213,7 +214,7 @@ DefineType(List *names, List *parameters)
 	 */
 	if (!OidIsValid(typoid))
 	{
-		typoid = TypeShellMake(typeName, typeNamespace, GetUserId());
+		address = TypeShellMake(typeName, typeNamespace, GetUserId());
 		/* Make new shell type visible for modification below */
 		CommandCounterIncrement();
 
@@ -222,7 +223,7 @@ DefineType(List *names, List *parameters)
 		 * creating the shell type was all we're supposed to do.
 		 */
 		if (parameters == NIL)
-			return InvalidOid;
+			return address;
 	}
 	else
 	{
@@ -595,7 +596,7 @@ DefineType(List *names, List *parameters)
 	 * types) in ArrayType and in composite types in DatumTupleFields.  This
 	 * oid must be preserved by binary upgrades.
 	 */
-	typoid =
+	address =
 		TypeCreate(InvalidOid,	/* no predetermined type OID */
 				   typeName,	/* type name */
 				   typeNamespace,		/* namespace */
@@ -670,7 +671,7 @@ DefineType(List *names, List *parameters)
 
 	pfree(array_type);
 
-	return typoid;
+	return address;
 }
 
 /*
@@ -716,7 +717,7 @@ RemoveTypeById(Oid typeOid)
  * DefineDomain
  *		Registers a new domain.
  */
-Oid
+ObjectAddress
 DefineDomain(CreateDomainStmt *stmt)
 {
 	char	   *domainName;
@@ -746,12 +747,12 @@ DefineDomain(CreateDomainStmt *stmt)
 	List	   *schema = stmt->constraints;
 	ListCell   *listptr;
 	Oid			basetypeoid;
-	Oid			domainoid;
 	Oid			old_type_oid;
 	Oid			domaincoll;
 	Form_pg_type baseType;
 	int32		basetypeMod;
 	Oid			baseColl;
+	ObjectAddress address;
 
 	/* Convert list of names to a name and namespace */
 	domainNamespace = QualifiedNameGetCreationNamespace(stmt->domainname,
@@ -1021,7 +1022,7 @@ DefineDomain(CreateDomainStmt *stmt)
 	/*
 	 * Have TypeCreate do all the real work.
 	 */
-	domainoid =
+	address =
 		TypeCreate(InvalidOid,	/* no predetermined type OID */
 				   domainName,	/* type name */
 				   domainNamespace,		/* namespace */
@@ -1066,9 +1067,9 @@ DefineDomain(CreateDomainStmt *stmt)
 		switch (constr->contype)
 		{
 			case CONSTR_CHECK:
-				domainAddConstraint(domainoid, domainNamespace,
+				domainAddConstraint(address.objectId, domainNamespace,
 									basetypeoid, basetypeMod,
-									constr, domainName);
+									constr, domainName, NULL);
 				break;
 
 				/* Other constraint types were fully processed above */
@@ -1086,7 +1087,7 @@ DefineDomain(CreateDomainStmt *stmt)
 	 */
 	ReleaseSysCache(typeTup);
 
-	return domainoid;
+	return address;
 }
 
 
@@ -1094,16 +1095,16 @@ DefineDomain(CreateDomainStmt *stmt)
  * DefineEnum
  *		Registers a new enum.
  */
-Oid
+ObjectAddress
 DefineEnum(CreateEnumStmt *stmt)
 {
 	char	   *enumName;
 	char	   *enumArrayName;
 	Oid			enumNamespace;
-	Oid			enumTypeOid;
 	AclResult	aclresult;
 	Oid			old_type_oid;
 	Oid			enumArrayOid;
+	ObjectAddress enumTypeAddr;
 
 	/* Convert list of names to a name and namespace */
 	enumNamespace = QualifiedNameGetCreationNamespace(stmt->typeName,
@@ -1133,7 +1134,7 @@ DefineEnum(CreateEnumStmt *stmt)
 	enumArrayOid = AssignTypeArrayOid();
 
 	/* Create the pg_type entry */
-	enumTypeOid =
+	enumTypeAddr =
 		TypeCreate(InvalidOid,	/* no predetermined type OID */
 				   enumName,	/* type name */
 				   enumNamespace,		/* namespace */
@@ -1167,7 +1168,7 @@ DefineEnum(CreateEnumStmt *stmt)
 				   InvalidOid); /* type's collation */
 
 	/* Enter the enum's values into pg_enum */
-	EnumValuesCreate(enumTypeOid, stmt->vals);
+	EnumValuesCreate(enumTypeAddr.objectId, stmt->vals);
 
 	/*
 	 * Create the array type that goes with it.
@@ -1192,7 +1193,7 @@ DefineEnum(CreateEnumStmt *stmt)
 			   InvalidOid,		/* typmodin procedure - none */
 			   InvalidOid,		/* typmodout procedure - none */
 			   F_ARRAY_TYPANALYZE,		/* analyze procedure */
-			   enumTypeOid,		/* element type ID */
+			   enumTypeAddr.objectId,	/* element type ID */
 			   true,			/* yes this is an array type */
 			   InvalidOid,		/* no further array type */
 			   InvalidOid,		/* base type ID */
@@ -1208,19 +1209,20 @@ DefineEnum(CreateEnumStmt *stmt)
 
 	pfree(enumArrayName);
 
-	return enumTypeOid;
+	return enumTypeAddr;
 }
 
 /*
  * AlterEnum
  *		Adds a new label to an existing enum.
  */
-Oid
+ObjectAddress
 AlterEnum(AlterEnumStmt *stmt, bool isTopLevel)
 {
 	Oid			enum_type_oid;
 	TypeName   *typename;
 	HeapTuple	tup;
+	ObjectAddress address;
 
 	/* Make a TypeName so we can use standard type lookup machinery */
 	typename = makeTypeNameFromNameList(stmt->typeName);
@@ -1259,9 +1261,11 @@ AlterEnum(AlterEnumStmt *stmt, bool isTopLevel)
 
 	InvokeObjectPostAlterHook(TypeRelationId, enum_type_oid, 0);
 
+	ObjectAddressSet(address, TypeRelationId, enum_type_oid);
+
 	ReleaseSysCache(tup);
 
-	return enum_type_oid;
+	return address;
 }
 
 
@@ -1293,7 +1297,7 @@ checkEnumOwner(HeapTuple tup)
  * DefineRange
  *		Registers a new range type.
  */
-Oid
+ObjectAddress
 DefineRange(CreateRangeStmt *stmt)
 {
 	char	   *typeName;
@@ -1316,6 +1320,7 @@ DefineRange(CreateRangeStmt *stmt)
 	char		alignment;
 	AclResult	aclresult;
 	ListCell   *lc;
+	ObjectAddress address;
 
 	/* Convert list of names to a name and namespace */
 	typeNamespace = QualifiedNameGetCreationNamespace(stmt->typeName,
@@ -1354,7 +1359,8 @@ DefineRange(CreateRangeStmt *stmt)
 	 */
 	if (!OidIsValid(typoid))
 	{
-		typoid = TypeShellMake(typeName, typeNamespace, GetUserId());
+		address = TypeShellMake(typeName, typeNamespace, GetUserId());
+		typoid = address.objectId;
 		/* Make new shell type visible for modification below */
 		CommandCounterIncrement();
 	}
@@ -1467,7 +1473,7 @@ DefineRange(CreateRangeStmt *stmt)
 	rangeArrayOid = AssignTypeArrayOid();
 
 	/* Create the pg_type entry */
-	typoid =
+	address =
 		TypeCreate(InvalidOid,	/* no predetermined type OID */
 				   typeName,	/* type name */
 				   typeNamespace,		/* namespace */
@@ -1499,6 +1505,7 @@ DefineRange(CreateRangeStmt *stmt)
 				   0,			/* Array dimensions of typbasetype */
 				   false,		/* Type NOT NULL */
 				   InvalidOid); /* type's collation (ranges never have one) */
+	typoid = address.objectId;
 
 	/* Create the entry in pg_range */
 	RangeCreate(typoid, rangeSubtype, rangeCollation, rangeSubOpclass,
@@ -1546,7 +1553,7 @@ DefineRange(CreateRangeStmt *stmt)
 	/* And create the constructor functions for this range type */
 	makeRangeConstructors(typeName, typeNamespace, typoid, rangeSubtype);
 
-	return typoid;
+	return address;
 }
 
 /*
@@ -1582,45 +1589,40 @@ makeRangeConstructors(const char *name, Oid namespace,
 	for (i = 0; i < lengthof(prosrc); i++)
 	{
 		oidvector  *constructorArgTypesVector;
-		Oid			procOid;
 
 		constructorArgTypesVector = buildoidvector(constructorArgTypes,
 												   pronargs[i]);
 
-		procOid = ProcedureCreate(name, /* name: same as range type */
-								  namespace,	/* namespace */
-								  false,		/* replace */
-								  false,		/* returns set */
-								  rangeOid,		/* return type */
-								  BOOTSTRAP_SUPERUSERID,		/* proowner */
-								  INTERNALlanguageId,	/* language */
-								  F_FMGR_INTERNAL_VALIDATOR,	/* language validator */
-								  prosrc[i],	/* prosrc */
-								  NULL, /* probin */
-								  false,		/* isAgg */
-								  false,		/* isWindowFunc */
-								  false,		/* security_definer */
-								  false,		/* leakproof */
-								  false,		/* isStrict */
-								  PROVOLATILE_IMMUTABLE,		/* volatility */
-								  constructorArgTypesVector,	/* parameterTypes */
-								  PointerGetDatum(NULL),		/* allParameterTypes */
-								  PointerGetDatum(NULL),		/* parameterModes */
-								  PointerGetDatum(NULL),		/* parameterNames */
-								  NIL,	/* parameterDefaults */
-								  PointerGetDatum(NULL),		/* proconfig */
-								  1.0,	/* procost */
-								  0.0); /* prorows */
+		myself = ProcedureCreate(name,	/* name: same as range type */
+								 namespace,		/* namespace */
+								 false, /* replace */
+								 false, /* returns set */
+								 rangeOid,		/* return type */
+								 BOOTSTRAP_SUPERUSERID, /* proowner */
+								 INTERNALlanguageId,	/* language */
+								 F_FMGR_INTERNAL_VALIDATOR,		/* language validator */
+								 prosrc[i],		/* prosrc */
+								 NULL,	/* probin */
+								 false, /* isAgg */
+								 false, /* isWindowFunc */
+								 false, /* security_definer */
+								 false, /* leakproof */
+								 false, /* isStrict */
+								 PROVOLATILE_IMMUTABLE, /* volatility */
+								 constructorArgTypesVector,		/* parameterTypes */
+								 PointerGetDatum(NULL), /* allParameterTypes */
+								 PointerGetDatum(NULL), /* parameterModes */
+								 PointerGetDatum(NULL), /* parameterNames */
+								 NIL,	/* parameterDefaults */
+								 PointerGetDatum(NULL), /* proconfig */
+								 1.0,	/* procost */
+								 0.0);	/* prorows */
 
 		/*
 		 * Make the constructors internally-dependent on the range type so
 		 * that they go away silently when the type is dropped.  Note that
 		 * pg_dump depends on this choice to avoid dumping the constructors.
 		 */
-		myself.classId = ProcedureRelationId;
-		myself.objectId = procOid;
-		myself.objectSubId = 0;
-
 		recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
 	}
 }
@@ -2059,17 +2061,16 @@ AssignTypeArrayOid(void)
  * If the relation already exists, then 'DefineRelation' will abort
  * the xact...
  *
- * DefineCompositeType returns relid for use when creating
- * an implicit composite type during function creation
+ * Return type is the new type's object address.
  *-------------------------------------------------------------------
  */
-Oid
+ObjectAddress
 DefineCompositeType(RangeVar *typevar, List *coldeflist)
 {
 	CreateStmt *createStmt = makeNode(CreateStmt);
 	Oid			old_type_oid;
 	Oid			typeNamespace;
-	Oid			relid;
+	ObjectAddress address;
 
 	/*
 	 * now set the parameters for keys/inheritance etc. All of these are
@@ -2108,17 +2109,19 @@ DefineCompositeType(RangeVar *typevar, List *coldeflist)
 	/*
 	 * Finally create the relation.  This also creates the type.
 	 */
-	relid = DefineRelation(createStmt, RELKIND_COMPOSITE_TYPE, InvalidOid);
-	Assert(relid != InvalidOid);
-	return relid;
+	DefineRelation(createStmt, RELKIND_COMPOSITE_TYPE, InvalidOid, &address);
+
+	return address;
 }
 
 /*
  * AlterDomainDefault
  *
  * Routine implementing ALTER DOMAIN SET/DROP DEFAULT statements.
+ *
+ * Returns ObjectAddress of the modified domain.
  */
-Oid
+ObjectAddress
 AlterDomainDefault(List *names, Node *defaultRaw)
 {
 	TypeName   *typename;
@@ -2133,6 +2136,7 @@ AlterDomainDefault(List *names, Node *defaultRaw)
 	bool		new_record_repl[Natts_pg_type];
 	HeapTuple	newtuple;
 	Form_pg_type typTup;
+	ObjectAddress address;
 
 	/* Make a TypeName so we can use standard type lookup machinery */
 	typename = makeTypeNameFromNameList(names);
@@ -2242,19 +2246,23 @@ AlterDomainDefault(List *names, Node *defaultRaw)
 
 	InvokeObjectPostAlterHook(TypeRelationId, domainoid, 0);
 
+	ObjectAddressSet(address, TypeRelationId, domainoid);
+
 	/* Clean up */
 	heap_close(rel, NoLock);
 	heap_freetuple(newtuple);
 
-	return domainoid;
+	return address;
 }
 
 /*
  * AlterDomainNotNull
  *
  * Routine implementing ALTER DOMAIN SET/DROP NOT NULL statements.
+ *
+ * Returns ObjectAddress of the modified domain.
  */
-Oid
+ObjectAddress
 AlterDomainNotNull(List *names, bool notNull)
 {
 	TypeName   *typename;
@@ -2262,6 +2270,7 @@ AlterDomainNotNull(List *names, bool notNull)
 	Relation	typrel;
 	HeapTuple	tup;
 	Form_pg_type typTup;
+	ObjectAddress address = InvalidObjectAddress;
 
 	/* Make a TypeName so we can use standard type lookup machinery */
 	typename = makeTypeNameFromNameList(names);
@@ -2282,7 +2291,7 @@ AlterDomainNotNull(List *names, bool notNull)
 	if (typTup->typnotnull == notNull)
 	{
 		heap_close(typrel, RowExclusiveLock);
-		return InvalidOid;
+		return address;
 	}
 
 	/* Adding a NOT NULL constraint requires checking existing columns */
@@ -2356,11 +2365,13 @@ AlterDomainNotNull(List *names, bool notNull)
 
 	InvokeObjectPostAlterHook(TypeRelationId, domainoid, 0);
 
+	ObjectAddressSet(address, TypeRelationId, domainoid);
+
 	/* Clean up */
 	heap_freetuple(tup);
 	heap_close(typrel, RowExclusiveLock);
 
-	return domainoid;
+	return address;
 }
 
 /*
@@ -2368,7 +2379,7 @@ AlterDomainNotNull(List *names, bool notNull)
  *
  * Implements the ALTER DOMAIN DROP CONSTRAINT statement
  */
-Oid
+ObjectAddress
 AlterDomainDropConstraint(List *names, const char *constrName,
 						  DropBehavior behavior, bool missing_ok)
 {
@@ -2381,6 +2392,7 @@ AlterDomainDropConstraint(List *names, const char *constrName,
 	ScanKeyData key[1];
 	HeapTuple	contup;
 	bool		found = false;
+	ObjectAddress address = InvalidObjectAddress;
 
 	/* Make a TypeName so we can use standard type lookup machinery */
 	typename = makeTypeNameFromNameList(names);
@@ -2427,6 +2439,9 @@ AlterDomainDropConstraint(List *names, const char *constrName,
 			found = true;
 		}
 	}
+
+	ObjectAddressSet(address, TypeRelationId, domainoid);
+
 	/* Clean up after the scan */
 	systable_endscan(conscan);
 	heap_close(conrel, RowExclusiveLock);
@@ -2446,7 +2461,7 @@ AlterDomainDropConstraint(List *names, const char *constrName,
 							constrName, TypeNameToString(typename))));
 	}
 
-	return domainoid;
+	return address;
 }
 
 /*
@@ -2454,8 +2469,9 @@ AlterDomainDropConstraint(List *names, const char *constrName,
  *
  * Implements the ALTER DOMAIN .. ADD CONSTRAINT statement.
  */
-Oid
-AlterDomainAddConstraint(List *names, Node *newConstraint)
+ObjectAddress
+AlterDomainAddConstraint(List *names, Node *newConstraint,
+						 ObjectAddress *constrAddr)
 {
 	TypeName   *typename;
 	Oid			domainoid;
@@ -2464,6 +2480,7 @@ AlterDomainAddConstraint(List *names, Node *newConstraint)
 	Form_pg_type typTup;
 	Constraint *constr;
 	char	   *ccbin;
+	ObjectAddress address;
 
 	/* Make a TypeName so we can use standard type lookup machinery */
 	typename = makeTypeNameFromNameList(names);
@@ -2539,7 +2556,7 @@ AlterDomainAddConstraint(List *names, Node *newConstraint)
 
 	ccbin = domainAddConstraint(domainoid, typTup->typnamespace,
 								typTup->typbasetype, typTup->typtypmod,
-								constr, NameStr(typTup->typname));
+								constr, NameStr(typTup->typname), constrAddr);
 
 	/*
 	 * If requested to validate the constraint, test all values stored in the
@@ -2548,10 +2565,12 @@ AlterDomainAddConstraint(List *names, Node *newConstraint)
 	if (!constr->skip_validation)
 		validateDomainConstraint(domainoid, ccbin);
 
+	ObjectAddressSet(address, TypeRelationId, domainoid);
+
 	/* Clean up */
 	heap_close(typrel, RowExclusiveLock);
 
-	return domainoid;
+	return address;
 }
 
 /*
@@ -2559,7 +2578,7 @@ AlterDomainAddConstraint(List *names, Node *newConstraint)
  *
  * Implements the ALTER DOMAIN .. VALIDATE CONSTRAINT statement.
  */
-Oid
+ObjectAddress
 AlterDomainValidateConstraint(List *names, char *constrName)
 {
 	TypeName   *typename;
@@ -2577,6 +2596,7 @@ AlterDomainValidateConstraint(List *names, char *constrName)
 	HeapTuple	tuple;
 	HeapTuple	copyTuple;
 	ScanKeyData key;
+	ObjectAddress address;
 
 	/* Make a TypeName so we can use standard type lookup machinery */
 	typename = makeTypeNameFromNameList(names);
@@ -2647,6 +2667,8 @@ AlterDomainValidateConstraint(List *names, char *constrName)
 	InvokeObjectPostAlterHook(ConstraintRelationId,
 							  HeapTupleGetOid(copyTuple), 0);
 
+	ObjectAddressSet(address, TypeRelationId, domainoid);
+
 	heap_freetuple(copyTuple);
 
 	systable_endscan(scan);
@@ -2656,7 +2678,7 @@ AlterDomainValidateConstraint(List *names, char *constrName)
 
 	ReleaseSysCache(tup);
 
-	return domainoid;
+	return address;
 }
 
 static void
@@ -2953,13 +2975,14 @@ checkDomainOwner(HeapTuple tup)
 static char *
 domainAddConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
 					int typMod, Constraint *constr,
-					char *domainName)
+					char *domainName, ObjectAddress *constrAddr)
 {
 	Node	   *expr;
 	char	   *ccsrc;
 	char	   *ccbin;
 	ParseState *pstate;
 	CoerceToDomainValue *domVal;
+	Oid			ccoid;
 
 	/*
 	 * Assign or validate constraint name
@@ -3038,34 +3061,37 @@ domainAddConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
 	/*
 	 * Store the constraint in pg_constraint
 	 */
-	CreateConstraintEntry(constr->conname,		/* Constraint Name */
-						  domainNamespace,		/* namespace */
-						  CONSTRAINT_CHECK,		/* Constraint Type */
-						  false,	/* Is Deferrable */
-						  false,	/* Is Deferred */
-						  !constr->skip_validation,		/* Is Validated */
-						  InvalidOid,	/* not a relation constraint */
-						  NULL,
-						  0,
-						  domainOid,	/* domain constraint */
-						  InvalidOid,	/* no associated index */
-						  InvalidOid,	/* Foreign key fields */
-						  NULL,
-						  NULL,
-						  NULL,
-						  NULL,
-						  0,
-						  ' ',
-						  ' ',
-						  ' ',
-						  NULL, /* not an exclusion constraint */
-						  expr, /* Tree form of check constraint */
-						  ccbin,	/* Binary form of check constraint */
-						  ccsrc,	/* Source form of check constraint */
-						  true, /* is local */
-						  0,	/* inhcount */
-						  false,	/* connoinherit */
-						  false);		/* is_internal */
+	ccoid =
+		CreateConstraintEntry(constr->conname,	/* Constraint Name */
+							  domainNamespace,	/* namespace */
+							  CONSTRAINT_CHECK, /* Constraint Type */
+							  false,	/* Is Deferrable */
+							  false,	/* Is Deferred */
+							  !constr->skip_validation, /* Is Validated */
+							  InvalidOid,		/* not a relation constraint */
+							  NULL,
+							  0,
+							  domainOid,		/* domain constraint */
+							  InvalidOid,		/* no associated index */
+							  InvalidOid,		/* Foreign key fields */
+							  NULL,
+							  NULL,
+							  NULL,
+							  NULL,
+							  0,
+							  ' ',
+							  ' ',
+							  ' ',
+							  NULL,		/* not an exclusion constraint */
+							  expr,		/* Tree form of check constraint */
+							  ccbin,	/* Binary form of check constraint */
+							  ccsrc,	/* Source form of check constraint */
+							  true,		/* is local */
+							  0,	/* inhcount */
+							  false,	/* connoinherit */
+							  false);	/* is_internal */
+	if (constrAddr)
+		ObjectAddressSet(*constrAddr, ConstraintRelationId, ccoid);
 
 	/*
 	 * Return the compiled constraint expression so the calling routine can
@@ -3078,7 +3104,7 @@ domainAddConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
 /*
  * Execute ALTER TYPE RENAME
  */
-Oid
+ObjectAddress
 RenameType(RenameStmt *stmt)
 {
 	List	   *names = stmt->object;
@@ -3088,6 +3114,7 @@ RenameType(RenameStmt *stmt)
 	Relation	rel;
 	HeapTuple	tup;
 	Form_pg_type typTup;
+	ObjectAddress address;
 
 	/* Make a TypeName so we can use standard type lookup machinery */
 	typename = makeTypeNameFromNameList(names);
@@ -3145,16 +3172,17 @@ RenameType(RenameStmt *stmt)
 		RenameTypeInternal(typeOid, newTypeName,
 						   typTup->typnamespace);
 
+	ObjectAddressSet(address, TypeRelationId, typeOid);
 	/* Clean up */
 	heap_close(rel, RowExclusiveLock);
 
-	return typeOid;
+	return address;
 }
 
 /*
  * Change the owner of a type.
  */
-Oid
+ObjectAddress
 AlterTypeOwner(List *names, Oid newOwnerId, ObjectType objecttype)
 {
 	TypeName   *typename;
@@ -3164,6 +3192,7 @@ AlterTypeOwner(List *names, Oid newOwnerId, ObjectType objecttype)
 	HeapTuple	newtup;
 	Form_pg_type typTup;
 	AclResult	aclresult;
+	ObjectAddress address;
 
 	rel = heap_open(TypeRelationId, RowExclusiveLock);
 
@@ -3293,10 +3322,12 @@ AlterTypeOwner(List *names, Oid newOwnerId, ObjectType objecttype)
 		}
 	}
 
+	ObjectAddressSet(address, TypeRelationId, typeOid);
+
 	/* Clean up */
 	heap_close(rel, RowExclusiveLock);
 
-	return typeOid;
+	return address;
 }
 
 /*
@@ -3376,13 +3407,16 @@ AlterTypeOwnerInternal(Oid typeOid, Oid newOwnerId,
 /*
  * Execute ALTER TYPE SET SCHEMA
  */
-Oid
-AlterTypeNamespace(List *names, const char *newschema, ObjectType objecttype)
+ObjectAddress
+AlterTypeNamespace(List *names, const char *newschema, ObjectType objecttype,
+				   Oid *oldschema)
 {
 	TypeName   *typename;
 	Oid			typeOid;
 	Oid			nspOid;
+	Oid			oldNspOid;
 	ObjectAddresses *objsMoved;
+	ObjectAddress myself;
 
 	/* Make a TypeName so we can use standard type lookup machinery */
 	typename = makeTypeNameFromNameList(names);
@@ -3399,10 +3433,15 @@ AlterTypeNamespace(List *names, const char *newschema, ObjectType objecttype)
 	nspOid = LookupCreationNamespace(newschema);
 
 	objsMoved = new_object_addresses();
-	AlterTypeNamespace_oid(typeOid, nspOid, objsMoved);
+	oldNspOid = AlterTypeNamespace_oid(typeOid, nspOid, objsMoved);
 	free_object_addresses(objsMoved);
 
-	return typeOid;
+	if (oldschema)
+		*oldschema = oldNspOid;
+
+	ObjectAddressSet(myself, TypeRelationId, typeOid);
+
+	return myself;
 }
 
 Oid

src/backend/commands/user.c

@@ -1114,7 +1114,7 @@ DropRole(DropRoleStmt *stmt)
 /*
  * Rename role
  */
-Oid
+ObjectAddress
 RenameRole(const char *oldname, const char *newname)
 {
 	HeapTuple	oldtuple,
@@ -1128,6 +1128,7 @@ RenameRole(const char *oldname, const char *newname)
 	bool		repl_repl[Natts_pg_authid];
 	int			i;
 	Oid			roleid;
+	ObjectAddress address;
 
 	rel = heap_open(AuthIdRelationId, RowExclusiveLock);
 	dsc = RelationGetDescr(rel);
@@ -1216,6 +1217,8 @@ RenameRole(const char *oldname, const char *newname)
 
 	InvokeObjectPostAlterHook(AuthIdRelationId, roleid, 0);
 
+	ObjectAddressSet(address, AuthIdRelationId, roleid);
+
 	ReleaseSysCache(oldtuple);
 
 	/*
@@ -1223,7 +1226,7 @@ RenameRole(const char *oldname, const char *newname)
 	 */
 	heap_close(rel, NoLock);
 
-	return roleid;
+	return address;
 }
 
 /*

src/backend/commands/view.c

@@ -65,7 +65,7 @@ validateWithCheckOption(char *value)
  * work harder.
  *---------------------------------------------------------------------
  */
-static Oid
+static ObjectAddress
 DefineVirtualRelation(RangeVar *relation, List *tlist, bool replace,
 					  List *options)
 {
@@ -143,6 +143,7 @@ DefineVirtualRelation(RangeVar *relation, List *tlist, bool replace,
 		TupleDesc	descriptor;
 		List	   *atcmds = NIL;
 		AlterTableCmd *atcmd;
+		ObjectAddress address;
 
 		/* Relation is already locked, but we must build a relcache entry. */
 		rel = relation_open(viewOid, NoLock);
@@ -208,16 +209,18 @@ DefineVirtualRelation(RangeVar *relation, List *tlist, bool replace,
 		/* OK, let's do it. */
 		AlterTableInternal(viewOid, atcmds, true);
 
+		ObjectAddressSet(address, RelationRelationId, viewOid);
+
 		/*
 		 * Seems okay, so return the OID of the pre-existing view.
 		 */
 		relation_close(rel, NoLock);	/* keep the lock! */
 
-		return viewOid;
+		return address;
 	}
 	else
 	{
-		Oid			relid;
+		ObjectAddress address;
 
 		/*
 		 * now set the parameters for keys/inheritance etc. All of these are
@@ -237,9 +240,9 @@ DefineVirtualRelation(RangeVar *relation, List *tlist, bool replace,
 		 * existing view, so we don't need more code to complain if "replace"
 		 * is false).
 		 */
-		relid = DefineRelation(createStmt, RELKIND_VIEW, InvalidOid);
-		Assert(relid != InvalidOid);
-		return relid;
+		address = DefineRelation(createStmt, RELKIND_VIEW, InvalidOid, NULL);
+		Assert(address.objectId != InvalidOid);
+		return address;
 	}
 }
 
@@ -388,14 +391,14 @@ UpdateRangeTableOfViewParse(Oid viewOid, Query *viewParse)
  * DefineView
  *		Execute a CREATE VIEW command.
  */
-Oid
+ObjectAddress
 DefineView(ViewStmt *stmt, const char *queryString)
 {
 	Query	   *viewParse;
-	Oid			viewOid;
 	RangeVar   *view;
 	ListCell   *cell;
 	bool		check_option;
+	ObjectAddress address;
 
 	/*
 	 * Run parse analysis to convert the raw parse tree to a Query.  Note this
@@ -533,7 +536,7 @@ DefineView(ViewStmt *stmt, const char *queryString)
 	 * NOTE: if it already exists and replace is false, the xact will be
 	 * aborted.
 	 */
-	viewOid = DefineVirtualRelation(view, viewParse->targetList,
+	address = DefineVirtualRelation(view, viewParse->targetList,
 									stmt->replace, stmt->options);
 
 	/*
@@ -543,9 +546,9 @@ DefineView(ViewStmt *stmt, const char *queryString)
 	 */
 	CommandCounterIncrement();
 
-	StoreViewQuery(viewOid, viewParse, stmt->replace);
+	StoreViewQuery(address.objectId, viewParse, stmt->replace);
 
-	return viewOid;
+	return address;
 }
 
 /*

src/backend/rewrite/rewriteDefine.c

@@ -191,7 +191,7 @@ InsertRule(char *rulname,
  * DefineRule
  *		Execute a CREATE RULE command.
  */
-Oid
+ObjectAddress
 DefineRule(RuleStmt *stmt, const char *queryString)
 {
 	List	   *actions;
@@ -225,7 +225,7 @@ DefineRule(RuleStmt *stmt, const char *queryString)
  * This is essentially the same as DefineRule() except that the rule's
  * action and qual have already been passed through parse analysis.
  */
-Oid
+ObjectAddress
 DefineQueryRewrite(char *rulename,
 				   Oid event_relid,
 				   Node *event_qual,
@@ -239,6 +239,7 @@ DefineQueryRewrite(char *rulename,
 	Query	   *query;
 	bool		RelisBecomingView = false;
 	Oid			ruleId = InvalidOid;
+	ObjectAddress address;
 
 	/*
 	 * If we are installing an ON SELECT rule, we had better grab
@@ -604,10 +605,12 @@ DefineQueryRewrite(char *rulename,
 		heap_close(relationRelation, RowExclusiveLock);
 	}
 
+	ObjectAddressSet(address, RewriteRelationId, ruleId);
+
 	/* Close rel, but keep lock till commit... */
 	heap_close(event_relation, NoLock);
 
-	return ruleId;
+	return address;
 }
 
 /*
@@ -897,7 +900,7 @@ RangeVarCallbackForRenameRule(const RangeVar *rv, Oid relid, Oid oldrelid,
 /*
  * Rename an existing rewrite rule.
  */
-Oid
+ObjectAddress
 RenameRewriteRule(RangeVar *relation, const char *oldName,
 				  const char *newName)
 {
@@ -907,6 +910,7 @@ RenameRewriteRule(RangeVar *relation, const char *oldName,
 	HeapTuple	ruletup;
 	Form_pg_rewrite ruleform;
 	Oid			ruleOid;
+	ObjectAddress address;
 
 	/*
 	 * Look up name, check permissions, and acquire lock (which we will NOT
@@ -969,10 +973,12 @@ RenameRewriteRule(RangeVar *relation, const char *oldName,
 	 */
 	CacheInvalidateRelcache(targetrel);
 
+	ObjectAddressSet(address, RewriteRelationId, ruleOid);
+
 	/*
 	 * Close rel, but keep exclusive lock!
 	 */
 	relation_close(targetrel, NoLock);
 
-	return ruleOid;
+	return address;
 }

src/backend/tcop/utility.c

@@ -818,7 +818,7 @@ standard_ProcessUtility(Node *parsetree,
 									   context, params,
 									   dest, completionTag);
 				else
-					ExecAlterObjectSchemaStmt(stmt);
+					ExecAlterObjectSchemaStmt(stmt, NULL);
 			}
 			break;
 
@@ -886,6 +886,7 @@ ProcessUtilitySlow(Node *parsetree,
 	bool		isTopLevel = (context == PROCESS_UTILITY_TOPLEVEL);
 	bool		isCompleteQuery = (context <= PROCESS_UTILITY_QUERY);
 	bool		needCleanup;
+	ObjectAddress address;
 
 	/* All event trigger calls are done only when isCompleteQuery is true */
 	needCleanup = isCompleteQuery && EventTriggerBeginCompleteQuery();
@@ -911,7 +912,6 @@ ProcessUtilitySlow(Node *parsetree,
 				{
 					List	   *stmts;
 					ListCell   *l;
-					Oid			relOid;
 
 					/* Run parse analysis ... */
 					stmts = transformCreateStmt((CreateStmt *) parsetree,
@@ -928,9 +928,9 @@ ProcessUtilitySlow(Node *parsetree,
 							static char *validnsps[] = HEAP_RELOPT_NAMESPACES;
 
 							/* Create the table itself */
-							relOid = DefineRelation((CreateStmt *) stmt,
-													RELKIND_RELATION,
-													InvalidOid);
+							address = DefineRelation((CreateStmt *) stmt,
+													 RELKIND_RELATION,
+													 InvalidOid, NULL);
 
 							/*
 							 * Let NewRelationCreateToastTable decide if this
@@ -952,16 +952,17 @@ ProcessUtilitySlow(Node *parsetree,
 												   toast_options,
 												   true);
 
-							NewRelationCreateToastTable(relOid, toast_options);
+							NewRelationCreateToastTable(address.objectId,
+														toast_options);
 						}
 						else if (IsA(stmt, CreateForeignTableStmt))
 						{
 							/* Create the table itself */
-							relOid = DefineRelation((CreateStmt *) stmt,
-													RELKIND_FOREIGN_TABLE,
-													InvalidOid);
+							address = DefineRelation((CreateStmt *) stmt,
+													 RELKIND_FOREIGN_TABLE,
+													 InvalidOid, NULL);
 							CreateForeignTable((CreateForeignTableStmt *) stmt,
-											   relOid);
+											   address.objectId);
 						}
 						else
 						{
@@ -1067,7 +1068,8 @@ ProcessUtilitySlow(Node *parsetree,
 							break;
 						case 'C':		/* ADD CONSTRAINT */
 							AlterDomainAddConstraint(stmt->typeName,
-													 stmt->def);
+													 stmt->def,
+													 NULL);
 							break;
 						case 'X':		/* DROP CONSTRAINT */
 							AlterDomainDropConstraint(stmt->typeName,
@@ -1190,7 +1192,8 @@ ProcessUtilitySlow(Node *parsetree,
 				break;
 
 			case T_AlterExtensionContentsStmt:
-				ExecAlterExtensionContentsStmt((AlterExtensionContentsStmt *) parsetree);
+				ExecAlterExtensionContentsStmt((AlterExtensionContentsStmt *) parsetree,
+											   NULL);
 				break;
 
 			case T_CreateFdwStmt:
@@ -1334,7 +1337,8 @@ ProcessUtilitySlow(Node *parsetree,
 				break;
 
 			case T_AlterObjectSchemaStmt:
-				ExecAlterObjectSchemaStmt((AlterObjectSchemaStmt *) parsetree);
+				ExecAlterObjectSchemaStmt((AlterObjectSchemaStmt *) parsetree,
+										  NULL);
 				break;
 
 			case T_AlterOwnerStmt:

src/include/catalog/heap.h

@@ -14,8 +14,9 @@
 #ifndef HEAP_H
 #define HEAP_H
 
-#include "parser/parse_node.h"
 #include "catalog/indexing.h"
+#include "catalog/objectaddress.h"
+#include "parser/parse_node.h"
 
 
 typedef struct RawColumnDefault
@@ -68,7 +69,8 @@ extern Oid heap_create_with_catalog(const char *relname,
 						 Datum reloptions,
 						 bool use_user_acl,
 						 bool allow_system_table_mods,
-						 bool is_internal);
+						 bool is_internal,
+						 ObjectAddress *typaddress);
 
 extern void heap_create_init_fork(Relation rel);
 

src/include/catalog/objectaddress.h

@@ -28,6 +28,18 @@ typedef struct ObjectAddress
 	int32		objectSubId;	/* Subitem within object (eg column), or 0 */
 } ObjectAddress;
 
+extern const ObjectAddress InvalidObjectAddress;
+
+#define ObjectAddressSubSet(addr, class_id, object_id, object_sub_id) \
+	do { \
+		(addr).classId = (class_id); \
+		(addr).objectId = (object_id); \
+		(addr).objectSubId = (object_sub_id); \
+	} while (0)
+
+#define ObjectAddressSet(addr, class_id, object_id) \
+	ObjectAddressSubSet(addr, class_id, object_id, 0)
+
 extern ObjectAddress get_object_address(ObjectType objtype, List *objname,
 				   List *objargs, Relation *relp,
 				   LOCKMODE lockmode, bool missing_ok);

src/include/catalog/pg_aggregate.h

@@ -20,6 +20,7 @@
 #define PG_AGGREGATE_H
 
 #include "catalog/genbki.h"
+#include "catalog/objectaddress.h"
 #include "nodes/pg_list.h"
 
 /* ----------------------------------------------------------------
@@ -308,7 +309,7 @@ DATA(insert ( 3992	h 1 ordered_set_transition_multi	dense_rank_final						-		-
 /*
  * prototypes for functions in pg_aggregate.c
  */
-extern Oid AggregateCreate(const char *aggName,
+extern ObjectAddress AggregateCreate(const char *aggName,
 				Oid aggNamespace,
 				char aggKind,
 				int numArgs,

src/include/catalog/pg_conversion_fn.h

@@ -14,7 +14,10 @@
 #ifndef PG_CONVERSION_FN_H
 #define PG_CONVERSION_FN_H
 
-extern Oid ConversionCreate(const char *conname, Oid connamespace,
+
+#include "catalog/objectaddress.h"
+
+extern ObjectAddress ConversionCreate(const char *conname, Oid connamespace,
 				 Oid conowner,
 				 int32 conforencoding, int32 contoencoding,
 				 Oid conproc, bool def);

src/include/catalog/pg_operator.h

@@ -23,6 +23,7 @@
 #define PG_OPERATOR_H
 
 #include "catalog/genbki.h"
+#include "catalog/objectaddress.h"
 #include "nodes/pg_list.h"
 
 /* ----------------
@@ -1812,7 +1813,7 @@ DESCR("is contained by");
 /*
  * function prototypes
  */
-extern Oid OperatorCreate(const char *operatorName,
+extern ObjectAddress OperatorCreate(const char *operatorName,
 			   Oid operatorNamespace,
 			   Oid leftTypeId,
 			   Oid rightTypeId,

src/include/catalog/pg_proc_fn.h

@@ -14,9 +14,10 @@
 #ifndef PG_PROC_FN_H
 #define PG_PROC_FN_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/pg_list.h"
 
-extern Oid ProcedureCreate(const char *procedureName,
+extern ObjectAddress ProcedureCreate(const char *procedureName,
 				Oid procNamespace,
 				bool replace,
 				bool returnsSet,

src/include/catalog/pg_type_fn.h

@@ -14,14 +14,15 @@
 #ifndef PG_TYPE_FN_H
 #define PG_TYPE_FN_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/nodes.h"
 
 
-extern Oid TypeShellMake(const char *typeName,
+extern ObjectAddress TypeShellMake(const char *typeName,
 			  Oid typeNamespace,
 			  Oid ownerId);
 
-extern Oid TypeCreate(Oid newTypeOid,
+extern ObjectAddress TypeCreate(Oid newTypeOid,
 		   const char *typeName,
 		   Oid typeNamespace,
 		   Oid relationOid,

src/include/commands/alter.h

@@ -15,16 +15,18 @@
 #define ALTER_H
 
 #include "catalog/dependency.h"
+#include "catalog/objectaddress.h"
 #include "nodes/parsenodes.h"
 #include "utils/relcache.h"
 
-extern Oid	ExecRenameStmt(RenameStmt *stmt);
+extern ObjectAddress ExecRenameStmt(RenameStmt *stmt);
 
-extern Oid	ExecAlterObjectSchemaStmt(AlterObjectSchemaStmt *stmt);
+extern ObjectAddress ExecAlterObjectSchemaStmt(AlterObjectSchemaStmt *stmt,
+						  ObjectAddress *oldSchemaAddr);
 extern Oid AlterObjectNamespace_oid(Oid classId, Oid objid, Oid nspOid,
 						 ObjectAddresses *objsMoved);
 
-extern Oid	ExecAlterOwnerStmt(AlterOwnerStmt *stmt);
+extern ObjectAddress ExecAlterOwnerStmt(AlterOwnerStmt *stmt);
 extern void AlterObjectOwner_internal(Relation catalog, Oid objectId,
 						  Oid new_ownerId);
 

src/include/commands/collationcmds.h

@@ -15,9 +15,10 @@
 #ifndef COLLATIONCMDS_H
 #define COLLATIONCMDS_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/parsenodes.h"
 
-extern Oid	DefineCollation(List *names, List *parameters);
+extern ObjectAddress DefineCollation(List *names, List *parameters);
 extern void IsThereCollationInNamespace(const char *collname, Oid nspOid);
 
 #endif   /* COLLATIONCMDS_H */

src/include/commands/comment.h

@@ -15,6 +15,7 @@
 #ifndef COMMENT_H
 #define COMMENT_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/parsenodes.h"
 
 /*------------------------------------------------------------------
@@ -29,7 +30,7 @@
  *------------------------------------------------------------------
  */
 
-extern Oid	CommentObject(CommentStmt *stmt);
+extern ObjectAddress CommentObject(CommentStmt *stmt);
 
 extern void DeleteComments(Oid oid, Oid classoid, int32 subid);
 

src/include/commands/conversioncmds.h

@@ -15,8 +15,9 @@
 #ifndef CONVERSIONCMDS_H
 #define CONVERSIONCMDS_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/parsenodes.h"
 
-extern Oid	CreateConversionCommand(CreateConversionStmt *parsetree);
+extern ObjectAddress CreateConversionCommand(CreateConversionStmt *parsetree);
 
 #endif   /* CONVERSIONCMDS_H */

src/include/commands/createas.h

@@ -14,12 +14,13 @@
 #ifndef CREATEAS_H
 #define CREATEAS_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/params.h"
 #include "nodes/parsenodes.h"
 #include "tcop/dest.h"
 
 
-extern Oid	ExecCreateTableAs(CreateTableAsStmt *stmt, const char *queryString,
+extern ObjectAddress ExecCreateTableAs(CreateTableAsStmt *stmt, const char *queryString,
 				  ParamListInfo params, char *completionTag);
 
 extern int	GetIntoRelEFlags(IntoClause *intoClause);

src/include/commands/dbcommands.h

@@ -15,6 +15,7 @@
 #define DBCOMMANDS_H
 
 #include "access/xlogreader.h"
+#include "catalog/objectaddress.h"
 #include "lib/stringinfo.h"
 #include "nodes/parsenodes.h"
 
@@ -40,10 +41,10 @@ typedef struct xl_dbase_drop_rec
 
 extern Oid	createdb(const CreatedbStmt *stmt);
 extern void dropdb(const char *dbname, bool missing_ok);
-extern Oid	RenameDatabase(const char *oldname, const char *newname);
+extern ObjectAddress RenameDatabase(const char *oldname, const char *newname);
 extern Oid	AlterDatabase(AlterDatabaseStmt *stmt, bool isTopLevel);
 extern Oid	AlterDatabaseSet(AlterDatabaseSetStmt *stmt);
-extern Oid	AlterDatabaseOwner(const char *dbname, Oid newOwnerId);
+extern ObjectAddress AlterDatabaseOwner(const char *dbname, Oid newOwnerId);
 
 extern Oid	get_database_oid(const char *dbname, bool missingok);
 extern char *get_database_name(Oid dbid);

src/include/commands/defrem.h

@@ -14,6 +14,7 @@
 #ifndef DEFREM_H
 #define DEFREM_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/parsenodes.h"
 #include "utils/array.h"
 
@@ -21,7 +22,7 @@
 extern void RemoveObjects(DropStmt *stmt);
 
 /* commands/indexcmds.c */
-extern Oid DefineIndex(Oid relationId,
+extern ObjectAddress DefineIndex(Oid relationId,
 			IndexStmt *stmt,
 			Oid indexRelationId,
 			bool is_alter_table,
@@ -42,12 +43,12 @@ extern bool CheckIndexCompatible(Oid oldId,
 extern Oid	GetDefaultOpClass(Oid type_id, Oid am_id);
 
 /* commands/functioncmds.c */
-extern Oid	CreateFunction(CreateFunctionStmt *stmt, const char *queryString);
+extern ObjectAddress CreateFunction(CreateFunctionStmt *stmt, const char *queryString);
 extern void RemoveFunctionById(Oid funcOid);
 extern void SetFunctionReturnType(Oid funcOid, Oid newRetType);
 extern void SetFunctionArgType(Oid funcOid, int argIndex, Oid newArgType);
-extern Oid	AlterFunction(AlterFunctionStmt *stmt);
-extern Oid	CreateCast(CreateCastStmt *stmt);
+extern ObjectAddress AlterFunction(AlterFunctionStmt *stmt);
+extern ObjectAddress CreateCast(CreateCastStmt *stmt);
 extern void DropCastById(Oid castOid);
 extern void IsThereFunctionInNamespace(const char *proname, int pronargs,
 						   oidvector *proargtypes, Oid nspOid);
@@ -66,16 +67,16 @@ extern void interpret_function_parameter_list(List *parameters,
 								  Oid *requiredResultType);
 
 /* commands/operatorcmds.c */
-extern Oid	DefineOperator(List *names, List *parameters);
+extern ObjectAddress DefineOperator(List *names, List *parameters);
 extern void RemoveOperatorById(Oid operOid);
 
 /* commands/aggregatecmds.c */
-extern Oid DefineAggregate(List *name, List *args, bool oldstyle,
+extern ObjectAddress DefineAggregate(List *name, List *args, bool oldstyle,
 				List *parameters, const char *queryString);
 
 /* commands/opclasscmds.c */
-extern Oid	DefineOpClass(CreateOpClassStmt *stmt);
-extern Oid	DefineOpFamily(CreateOpFamilyStmt *stmt);
+extern ObjectAddress DefineOpClass(CreateOpClassStmt *stmt);
+extern ObjectAddress DefineOpFamily(CreateOpFamilyStmt *stmt);
 extern Oid	AlterOpFamily(AlterOpFamilyStmt *stmt);
 extern void RemoveOpClassById(Oid opclassOid);
 extern void RemoveOpFamilyById(Oid opfamilyOid);
@@ -90,36 +91,36 @@ extern Oid	get_opclass_oid(Oid amID, List *opclassname, bool missing_ok);
 extern Oid	get_opfamily_oid(Oid amID, List *opfamilyname, bool missing_ok);
 
 /* commands/tsearchcmds.c */
-extern Oid	DefineTSParser(List *names, List *parameters);
+extern ObjectAddress DefineTSParser(List *names, List *parameters);
 extern void RemoveTSParserById(Oid prsId);
 
-extern Oid	DefineTSDictionary(List *names, List *parameters);
+extern ObjectAddress DefineTSDictionary(List *names, List *parameters);
 extern void RemoveTSDictionaryById(Oid dictId);
-extern Oid	AlterTSDictionary(AlterTSDictionaryStmt *stmt);
+extern ObjectAddress AlterTSDictionary(AlterTSDictionaryStmt *stmt);
 
-extern Oid	DefineTSTemplate(List *names, List *parameters);
+extern ObjectAddress DefineTSTemplate(List *names, List *parameters);
 extern void RemoveTSTemplateById(Oid tmplId);
 
-extern Oid	DefineTSConfiguration(List *names, List *parameters);
+extern ObjectAddress DefineTSConfiguration(List *names, List *parameters);
 extern void RemoveTSConfigurationById(Oid cfgId);
-extern Oid	AlterTSConfiguration(AlterTSConfigurationStmt *stmt);
+extern ObjectAddress AlterTSConfiguration(AlterTSConfigurationStmt *stmt);
 
 extern text *serialize_deflist(List *deflist);
 extern List *deserialize_deflist(Datum txt);
 
 /* commands/foreigncmds.c */
-extern Oid	AlterForeignServerOwner(const char *name, Oid newOwnerId);
+extern ObjectAddress AlterForeignServerOwner(const char *name, Oid newOwnerId);
 extern void AlterForeignServerOwner_oid(Oid, Oid newOwnerId);
-extern Oid	AlterForeignDataWrapperOwner(const char *name, Oid newOwnerId);
+extern ObjectAddress AlterForeignDataWrapperOwner(const char *name, Oid newOwnerId);
 extern void AlterForeignDataWrapperOwner_oid(Oid fwdId, Oid newOwnerId);
-extern Oid	CreateForeignDataWrapper(CreateFdwStmt *stmt);
-extern Oid	AlterForeignDataWrapper(AlterFdwStmt *stmt);
+extern ObjectAddress CreateForeignDataWrapper(CreateFdwStmt *stmt);
+extern ObjectAddress AlterForeignDataWrapper(AlterFdwStmt *stmt);
 extern void RemoveForeignDataWrapperById(Oid fdwId);
-extern Oid	CreateForeignServer(CreateForeignServerStmt *stmt);
-extern Oid	AlterForeignServer(AlterForeignServerStmt *stmt);
+extern ObjectAddress CreateForeignServer(CreateForeignServerStmt *stmt);
+extern ObjectAddress AlterForeignServer(AlterForeignServerStmt *stmt);
 extern void RemoveForeignServerById(Oid srvId);
-extern Oid	CreateUserMapping(CreateUserMappingStmt *stmt);
-extern Oid	AlterUserMapping(AlterUserMappingStmt *stmt);
+extern ObjectAddress CreateUserMapping(CreateUserMappingStmt *stmt);
+extern ObjectAddress AlterUserMapping(AlterUserMappingStmt *stmt);
 extern Oid	RemoveUserMapping(DropUserMappingStmt *stmt);
 extern void RemoveUserMappingById(Oid umId);
 extern void CreateForeignTable(CreateForeignTableStmt *stmt, Oid relid);

src/include/commands/event_trigger.h

@@ -43,7 +43,7 @@ extern void RemoveEventTriggerById(Oid ctrigOid);
 extern Oid	get_event_trigger_oid(const char *trigname, bool missing_ok);
 
 extern Oid	AlterEventTrigger(AlterEventTrigStmt *stmt);
-extern Oid	AlterEventTriggerOwner(const char *name, Oid newOwnerId);
+extern ObjectAddress AlterEventTriggerOwner(const char *name, Oid newOwnerId);
 extern void AlterEventTriggerOwner_oid(Oid, Oid newOwnerId);
 
 extern bool EventTriggerSupportsObjectType(ObjectType obtype);

src/include/commands/extension.h

@@ -14,6 +14,7 @@
 #ifndef EXTENSION_H
 #define EXTENSION_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/parsenodes.h"
 
 
@@ -27,23 +28,25 @@ extern bool creating_extension;
 extern Oid	CurrentExtensionObject;
 
 
-extern Oid	CreateExtension(CreateExtensionStmt *stmt);
+extern ObjectAddress CreateExtension(CreateExtensionStmt *stmt);
 
 extern void RemoveExtensionById(Oid extId);
 
-extern Oid InsertExtensionTuple(const char *extName, Oid extOwner,
+extern ObjectAddress InsertExtensionTuple(const char *extName, Oid extOwner,
 					 Oid schemaOid, bool relocatable, const char *extVersion,
 					 Datum extConfig, Datum extCondition,
 					 List *requiredExtensions);
 
-extern Oid	ExecAlterExtensionStmt(AlterExtensionStmt *stmt);
+extern ObjectAddress ExecAlterExtensionStmt(AlterExtensionStmt *stmt);
 
-extern Oid	ExecAlterExtensionContentsStmt(AlterExtensionContentsStmt *stmt);
+extern ObjectAddress ExecAlterExtensionContentsStmt(AlterExtensionContentsStmt *stmt,
+							   ObjectAddress *objAddress);
 
 extern Oid	get_extension_oid(const char *extname, bool missing_ok);
 extern char *get_extension_name(Oid ext_oid);
 
-extern Oid	AlterExtensionNamespace(List *names, const char *newschema);
+extern ObjectAddress AlterExtensionNamespace(List *names, const char *newschema,
+						Oid *oldschema);
 
 extern void AlterExtensionOwner_oid(Oid extensionOid, Oid newOwnerId);
 

src/include/commands/matview.h

@@ -14,6 +14,7 @@
 #ifndef MATVIEW_H
 #define MATVIEW_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/params.h"
 #include "nodes/parsenodes.h"
 #include "tcop/dest.h"
@@ -22,7 +23,7 @@
 
 extern void SetMatViewPopulatedState(Relation relation, bool newstate);
 
-extern Oid ExecRefreshMatView(RefreshMatViewStmt *stmt, const char *queryString,
+extern ObjectAddress ExecRefreshMatView(RefreshMatViewStmt *stmt, const char *queryString,
 				   ParamListInfo params, char *completionTag);
 
 extern DestReceiver *CreateTransientRelDestReceiver(Oid oid);

src/include/commands/policy.h

@@ -15,6 +15,7 @@
 #ifndef POLICY_H
 #define POLICY_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/parsenodes.h"
 #include "utils/relcache.h"
 
@@ -22,13 +23,13 @@ extern void RelationBuildRowSecurity(Relation relation);
 
 extern void RemovePolicyById(Oid policy_id);
 
-extern Oid CreatePolicy(CreatePolicyStmt *stmt);
-extern Oid AlterPolicy(AlterPolicyStmt *stmt);
+extern ObjectAddress CreatePolicy(CreatePolicyStmt *stmt);
+extern ObjectAddress AlterPolicy(AlterPolicyStmt *stmt);
 
 extern Oid get_relation_policy_oid(Oid relid, const char *policy_name,
 						bool missing_ok);
 
-extern Oid rename_policy(RenameStmt *stmt);
+extern ObjectAddress rename_policy(RenameStmt *stmt);
 
 
 #endif   /* POLICY_H */

src/include/commands/proclang.h

@@ -12,9 +12,10 @@
 #ifndef PROCLANG_H
 #define PROCLANG_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/parsenodes.h"
 
-extern Oid	CreateProceduralLanguage(CreatePLangStmt *stmt);
+extern ObjectAddress CreateProceduralLanguage(CreatePLangStmt *stmt);
 extern void DropProceduralLanguageById(Oid langOid);
 extern bool PLTemplateExists(const char *languageName);
 extern Oid	get_language_oid(const char *langname, bool missing_ok);

src/include/commands/schemacmds.h

@@ -15,6 +15,7 @@
 #ifndef SCHEMACMDS_H
 #define SCHEMACMDS_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/parsenodes.h"
 
 extern Oid CreateSchemaCommand(CreateSchemaStmt *parsetree,
@@ -22,8 +23,8 @@ extern Oid CreateSchemaCommand(CreateSchemaStmt *parsetree,
 
 extern void RemoveSchemaById(Oid schemaOid);
 
-extern Oid	RenameSchema(const char *oldname, const char *newname);
-extern Oid	AlterSchemaOwner(const char *name, Oid newOwnerId);
+extern ObjectAddress RenameSchema(const char *oldname, const char *newname);
+extern ObjectAddress AlterSchemaOwner(const char *name, Oid newOwnerId);
 extern void AlterSchemaOwner_oid(Oid schemaOid, Oid newOwnerId);
 
 #endif   /* SCHEMACMDS_H */

src/include/commands/seclabel.h

@@ -24,7 +24,7 @@ extern void DeleteSharedSecurityLabel(Oid objectId, Oid classId);
 /*
  * Statement and ESP hook support
  */
-extern Oid	ExecSecLabelStmt(SecLabelStmt *stmt);
+extern ObjectAddress ExecSecLabelStmt(SecLabelStmt *stmt);
 
 typedef void (*check_object_relabel_type) (const ObjectAddress *object,
 													   const char *seclabel);

src/include/commands/sequence.h

@@ -14,6 +14,7 @@
 #define SEQUENCE_H
 
 #include "access/xlogreader.h"
+#include "catalog/objectaddress.h"
 #include "fmgr.h"
 #include "lib/stringinfo.h"
 #include "nodes/parsenodes.h"
@@ -72,8 +73,8 @@ extern Datum lastval(PG_FUNCTION_ARGS);
 
 extern Datum pg_sequence_parameters(PG_FUNCTION_ARGS);
 
-extern Oid	DefineSequence(CreateSeqStmt *stmt);
-extern Oid	AlterSequence(AlterSeqStmt *stmt);
+extern ObjectAddress DefineSequence(CreateSeqStmt *stmt);
+extern ObjectAddress AlterSequence(AlterSeqStmt *stmt);
 extern void ResetSequence(Oid seq_relid);
 extern void ResetSequenceCaches(void);
 

src/include/commands/tablecmds.h

@@ -16,12 +16,14 @@
 
 #include "access/htup.h"
 #include "catalog/dependency.h"
+#include "catalog/objectaddress.h"
 #include "nodes/parsenodes.h"
 #include "storage/lock.h"
 #include "utils/relcache.h"
 
 
-extern Oid	DefineRelation(CreateStmt *stmt, char relkind, Oid ownerId);
+extern ObjectAddress DefineRelation(CreateStmt *stmt, char relkind, Oid ownerId,
+			   ObjectAddress *typaddress);
 
 extern void RemoveRelations(DropStmt *drop);
 
@@ -37,7 +39,8 @@ extern void AlterTableInternal(Oid relid, List *cmds, bool recurse);
 
 extern Oid	AlterTableMoveAll(AlterTableMoveAllStmt *stmt);
 
-extern Oid	AlterTableNamespace(AlterObjectSchemaStmt *stmt);
+extern ObjectAddress AlterTableNamespace(AlterObjectSchemaStmt *stmt,
+					Oid *oldschema);
 
 extern void AlterTableNamespaceInternal(Relation rel, Oid oldNspOid,
 							Oid nspOid, ObjectAddresses *objsMoved);
@@ -53,11 +56,13 @@ extern void ExecuteTruncate(TruncateStmt *stmt);
 
 extern void SetRelationHasSubclass(Oid relationId, bool relhassubclass);
 
-extern Oid	renameatt(RenameStmt *stmt);
+extern ObjectAddress renameatt(RenameStmt *stmt);
 
-extern Oid	RenameConstraint(RenameStmt *stmt);
+extern ObjectAddress renameatt_type(RenameStmt *stmt);
 
-extern Oid	RenameRelation(RenameStmt *stmt);
+extern ObjectAddress RenameConstraint(RenameStmt *stmt);
+
+extern ObjectAddress RenameRelation(RenameStmt *stmt);
 
 extern void RenameRelationInternal(Oid myrelid,
 					   const char *newrelname, bool is_internal);

src/include/commands/tablespace.h

@@ -15,6 +15,7 @@
 #define TABLESPACE_H
 
 #include "access/xlogreader.h"
+#include "catalog/objectaddress.h"
 #include "lib/stringinfo.h"
 #include "nodes/parsenodes.h"
 
@@ -42,7 +43,7 @@ typedef struct TableSpaceOpts
 
 extern Oid	CreateTableSpace(CreateTableSpaceStmt *stmt);
 extern void DropTableSpace(DropTableSpaceStmt *stmt);
-extern Oid	RenameTableSpace(const char *oldname, const char *newname);
+extern ObjectAddress RenameTableSpace(const char *oldname, const char *newname);
 extern Oid	AlterTableSpaceOptions(AlterTableSpaceOptionsStmt *stmt);
 
 extern void TablespaceCreateDbspace(Oid spcNode, Oid dbNode, bool isRedo);

src/include/commands/trigger.h

@@ -13,6 +13,7 @@
 #ifndef TRIGGER_H
 #define TRIGGER_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/execnodes.h"
 #include "nodes/parsenodes.h"
 
@@ -108,14 +109,14 @@ extern PGDLLIMPORT int SessionReplicationRole;
 #define TRIGGER_FIRES_ON_REPLICA			'R'
 #define TRIGGER_DISABLED					'D'
 
-extern Oid CreateTrigger(CreateTrigStmt *stmt, const char *queryString,
+extern ObjectAddress CreateTrigger(CreateTrigStmt *stmt, const char *queryString,
 			  Oid relOid, Oid refRelOid, Oid constraintOid, Oid indexOid,
 			  bool isInternal);
 
 extern void RemoveTriggerById(Oid trigOid);
 extern Oid	get_trigger_oid(Oid relid, const char *name, bool missing_ok);
 
-extern Oid	renametrig(RenameStmt *stmt);
+extern ObjectAddress renametrig(RenameStmt *stmt);
 
 extern void EnableDisableTrigger(Relation rel, const char *tgname,
 					 char fires_when, bool skip_system);

src/include/commands/typecmds.h

@@ -21,29 +21,31 @@
 
 #define DEFAULT_TYPDELIM		','
 
-extern Oid	DefineType(List *names, List *parameters);
+extern ObjectAddress DefineType(List *names, List *parameters);
 extern void RemoveTypeById(Oid typeOid);
-extern Oid	DefineDomain(CreateDomainStmt *stmt);
-extern Oid	DefineEnum(CreateEnumStmt *stmt);
-extern Oid	DefineRange(CreateRangeStmt *stmt);
-extern Oid	AlterEnum(AlterEnumStmt *stmt, bool isTopLevel);
-extern Oid	DefineCompositeType(RangeVar *typevar, List *coldeflist);
+extern ObjectAddress DefineDomain(CreateDomainStmt *stmt);
+extern ObjectAddress DefineEnum(CreateEnumStmt *stmt);
+extern ObjectAddress DefineRange(CreateRangeStmt *stmt);
+extern ObjectAddress AlterEnum(AlterEnumStmt *stmt, bool isTopLevel);
+extern ObjectAddress DefineCompositeType(RangeVar *typevar, List *coldeflist);
 extern Oid	AssignTypeArrayOid(void);
 
-extern Oid	AlterDomainDefault(List *names, Node *defaultRaw);
-extern Oid	AlterDomainNotNull(List *names, bool notNull);
-extern Oid	AlterDomainAddConstraint(List *names, Node *constr);
-extern Oid	AlterDomainValidateConstraint(List *names, char *constrName);
-extern Oid AlterDomainDropConstraint(List *names, const char *constrName,
+extern ObjectAddress AlterDomainDefault(List *names, Node *defaultRaw);
+extern ObjectAddress AlterDomainNotNull(List *names, bool notNull);
+extern ObjectAddress AlterDomainAddConstraint(List *names, Node *constr,
+						 ObjectAddress *constrAddr);
+extern ObjectAddress AlterDomainValidateConstraint(List *names, char *constrName);
+extern ObjectAddress AlterDomainDropConstraint(List *names, const char *constrName,
 						  DropBehavior behavior, bool missing_ok);
 
 extern void checkDomainOwner(HeapTuple tup);
 
-extern Oid	RenameType(RenameStmt *stmt);
-extern Oid	AlterTypeOwner(List *names, Oid newOwnerId, ObjectType objecttype);
+extern ObjectAddress RenameType(RenameStmt *stmt);
+extern ObjectAddress AlterTypeOwner(List *names, Oid newOwnerId, ObjectType objecttype);
 extern void AlterTypeOwnerInternal(Oid typeOid, Oid newOwnerId,
 					   bool hasDependEntry);
-extern Oid	AlterTypeNamespace(List *names, const char *newschema, ObjectType objecttype);
+extern ObjectAddress AlterTypeNamespace(List *names, const char *newschema,
+				   ObjectType objecttype, Oid *oldschema);
 extern Oid	AlterTypeNamespace_oid(Oid typeOid, Oid nspOid, ObjectAddresses *objsMoved);
 extern Oid AlterTypeNamespaceInternal(Oid typeOid, Oid nspOid,
 						   bool isImplicitArray,

src/include/commands/user.h

@@ -11,6 +11,7 @@
 #ifndef USER_H
 #define USER_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/parsenodes.h"
 
 
@@ -27,7 +28,7 @@ extern Oid	AlterRole(AlterRoleStmt *stmt);
 extern Oid	AlterRoleSet(AlterRoleSetStmt *stmt);
 extern void DropRole(DropRoleStmt *stmt);
 extern void GrantRole(GrantRoleStmt *stmt);
-extern Oid	RenameRole(const char *oldname, const char *newname);
+extern ObjectAddress RenameRole(const char *oldname, const char *newname);
 extern void DropOwnedObjects(DropOwnedStmt *stmt);
 extern void ReassignOwnedObjects(ReassignOwnedStmt *stmt);
 extern List *roleNamesToIds(List *memberNames);

src/include/commands/view.h

@@ -14,11 +14,12 @@
 #ifndef VIEW_H
 #define VIEW_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/parsenodes.h"
 
 extern void validateWithCheckOption(char *value);
 
-extern Oid	DefineView(ViewStmt *stmt, const char *queryString);
+extern ObjectAddress DefineView(ViewStmt *stmt, const char *queryString);
 
 extern void StoreViewQuery(Oid viewOid, Query *viewParse, bool replace);
 

src/include/rewrite/rewriteDefine.h

@@ -14,6 +14,7 @@
 #ifndef REWRITEDEFINE_H
 #define REWRITEDEFINE_H
 
+#include "catalog/objectaddress.h"
 #include "nodes/parsenodes.h"
 #include "utils/relcache.h"
 
@@ -22,9 +23,9 @@
 #define RULE_FIRES_ON_REPLICA	'R'
 #define RULE_DISABLED			'D'
 
-extern Oid	DefineRule(RuleStmt *stmt, const char *queryString);
+extern ObjectAddress DefineRule(RuleStmt *stmt, const char *queryString);
 
-extern Oid DefineQueryRewrite(char *rulename,
+extern ObjectAddress DefineQueryRewrite(char *rulename,
 				   Oid event_relid,
 				   Node *event_qual,
 				   CmdType event_type,
@@ -32,7 +33,7 @@ extern Oid DefineQueryRewrite(char *rulename,
 				   bool replace,
 				   List *action);
 
-extern Oid RenameRewriteRule(RangeVar *relation, const char *oldName,
+extern ObjectAddress RenameRewriteRule(RangeVar *relation, const char *oldName,
 				  const char *newName);
 
 extern void setRuleCheckAsUser(Node *node, Oid userid);