Add transforms to pg_get_object_address and friends

This was missed when transforms were added by commit cac76582.

Extracted from a larger patch
Author: Michael Paquier

src/backend/catalog/objectaddress.c

@@ -634,6 +634,10 @@ static const struct object_type_map
 	/* OCLASS_POLICY */
 	{
 		"policy", OBJECT_POLICY
+	},
+	/* OCLASS_TRANSFORM */
+	{
+		"transform", OBJECT_TRANSFORM
 	}
 };
 
@@ -1855,7 +1859,7 @@ pg_get_object_address(PG_FUNCTION_ARGS)
 	 * exceptions.
 	 */
 	if (type == OBJECT_TYPE || type == OBJECT_DOMAIN || type == OBJECT_CAST ||
-		type == OBJECT_DOMCONSTRAINT)
+		type == OBJECT_TRANSFORM || type == OBJECT_DOMCONSTRAINT)
 	{
 		Datum	   *elems;
 		bool	   *nulls;
@@ -1946,6 +1950,7 @@ pg_get_object_address(PG_FUNCTION_ARGS)
 		case OBJECT_CAST:
 		case OBJECT_USER_MAPPING:
 		case OBJECT_DEFACL:
+		case OBJECT_TRANSFORM:
 			if (list_length(args) != 1)
 				ereport(ERROR,
 						(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
@@ -3599,6 +3604,10 @@ getObjectTypeDescription(const ObjectAddress *object)
 			appendStringInfoString(&buffer, "policy");
 			break;
 
+		case OCLASS_TRANSFORM:
+			appendStringInfoString(&buffer, "transform");
+			break;
+
 		default:
 			appendStringInfo(&buffer, "unrecognized %u", object->classId);
 			break;
@@ -4521,6 +4530,40 @@ getObjectIdentityParts(const ObjectAddress *object,
 				break;
 			}
 
+		case OCLASS_TRANSFORM:
+			{
+				Relation	transformDesc;
+				HeapTuple	tup;
+				Form_pg_transform transform;
+				char	   *transformLang;
+				char	   *transformType;
+
+				transformDesc = heap_open(TransformRelationId, AccessShareLock);
+
+				tup = get_catalog_object_by_oid(transformDesc, object->objectId);
+
+				if (!HeapTupleIsValid(tup))
+					elog(ERROR, "could not find tuple for transform %u",
+						 object->objectId);
+
+				transform = (Form_pg_transform) GETSTRUCT(tup);
+
+				transformType = format_type_be_qualified(transform->trftype);
+				transformLang = get_language_name(transform->trflang, false);
+
+				appendStringInfo(&buffer, "for %s on language %s",
+								 transformType,
+								 transformLang);
+				if (objname)
+				{
+					*objname = list_make1(transformType);
+					*objargs = list_make1(pstrdup(transformLang));
+				}
+
+				heap_close(transformDesc, AccessShareLock);
+			}
+			break;
+
 		default:
 			appendStringInfo(&buffer, "unrecognized object %u %u %d",
 							 object->classId,

src/test/regress/expected/object_address.out

@@ -32,6 +32,9 @@ CREATE SERVER "integer" FOREIGN DATA WRAPPER addr_fdw;
 CREATE USER MAPPING FOR regtest_addr_user SERVER "integer";
 ALTER DEFAULT PRIVILEGES FOR ROLE regtest_addr_user IN SCHEMA public GRANT ALL ON TABLES TO regtest_addr_user;
 ALTER DEFAULT PRIVILEGES FOR ROLE regtest_addr_user REVOKE DELETE ON TABLES FROM regtest_addr_user;
+CREATE TRANSFORM FOR int LANGUAGE SQL (
+	FROM SQL WITH FUNCTION varchar_transform(internal),
+	TO SQL WITH FUNCTION int4recv(internal));
 -- test some error cases
 SELECT pg_get_object_address('stone', '{}', '{}');
 ERROR:  unrecognized object type "stone"
@@ -76,7 +79,7 @@ BEGIN
 		('operator'), ('operator class'), ('operator family'), ('rule'), ('trigger'),
 		('text search parser'), ('text search dictionary'),
 		('text search template'), ('text search configuration'),
-		('policy'), ('user mapping'), ('default acl'),
+		('policy'), ('user mapping'), ('default acl'), ('transform'),
 		('operator of access method'), ('function of access method')
 	LOOP
 		FOR names IN VALUES ('{eins}'), ('{addr_nsp, zwei}'), ('{eins, zwei, drei}')
@@ -261,6 +264,12 @@ WARNING:  error for default acl,{addr_nsp,zwei},{}: argument list length must be
 WARNING:  error for default acl,{addr_nsp,zwei},{integer}: unrecognized default ACL object type i
 WARNING:  error for default acl,{eins,zwei,drei},{}: argument list length must be exactly 1
 WARNING:  error for default acl,{eins,zwei,drei},{integer}: unrecognized default ACL object type i
+WARNING:  error for transform,{eins},{}: argument list length must be exactly 1
+WARNING:  error for transform,{eins},{integer}: type "eins" does not exist
+WARNING:  error for transform,{addr_nsp,zwei},{}: name list length must be exactly 1
+WARNING:  error for transform,{addr_nsp,zwei},{integer}: name list length must be exactly 1
+WARNING:  error for transform,{eins,zwei,drei},{}: name list length must be exactly 1
+WARNING:  error for transform,{eins,zwei,drei},{integer}: name list length must be exactly 1
 WARNING:  error for operator of access method,{eins},{}: name list length must be at least 3
 WARNING:  error for operator of access method,{eins},{integer}: name list length must be at least 3
 WARNING:  error for operator of access method,{addr_nsp,zwei},{}: name list length must be at least 3
@@ -363,7 +372,8 @@ WITH objects (type, name, args) AS (VALUES
 				('default acl', '{regtest_addr_user}', '{r}'),
 				-- extension
 				-- event trigger
-				('policy', '{addr_nsp, gentable, genpol}', '{}')
+				('policy', '{addr_nsp, gentable, genpol}', '{}'),
+				('transform', '{int}', '{sql}')
         )
 SELECT (pg_identify_object(addr1.classid, addr1.objid, addr1.subobjid)).*,
 	-- test roundtrip through pg_identify_object_as_address
@@ -411,11 +421,12 @@ SELECT (pg_identify_object(addr1.classid, addr1.objid, addr1.subobjid)).*,
  operator family           | pg_catalog | integer_ops       | pg_catalog.integer_ops USING btree                                   | t
  policy                    |            |                   | genpol on addr_nsp.gentable                                          | t
  collation                 | pg_catalog | "default"         | pg_catalog."default"                                                 | t
+ transform                 |            |                   | for integer on language sql                                          | t
  text search dictionary    | addr_nsp   | addr_ts_dict      | addr_nsp.addr_ts_dict                                                | t
  text search parser        | addr_nsp   | addr_ts_prs       | addr_nsp.addr_ts_prs                                                 | t
  text search configuration | addr_nsp   | addr_ts_conf      | addr_nsp.addr_ts_conf                                                | t
  text search template      | addr_nsp   | addr_ts_temp      | addr_nsp.addr_ts_temp                                                | t
-(40 rows)
+(41 rows)
 
 ---
 --- Cleanup resources

src/test/regress/sql/object_address.sql

@@ -36,6 +36,9 @@ CREATE SERVER "integer" FOREIGN DATA WRAPPER addr_fdw;
 CREATE USER MAPPING FOR regtest_addr_user SERVER "integer";
 ALTER DEFAULT PRIVILEGES FOR ROLE regtest_addr_user IN SCHEMA public GRANT ALL ON TABLES TO regtest_addr_user;
 ALTER DEFAULT PRIVILEGES FOR ROLE regtest_addr_user REVOKE DELETE ON TABLES FROM regtest_addr_user;
+CREATE TRANSFORM FOR int LANGUAGE SQL (
+	FROM SQL WITH FUNCTION varchar_transform(internal),
+	TO SQL WITH FUNCTION int4recv(internal));
 
 -- test some error cases
 SELECT pg_get_object_address('stone', '{}', '{}');
@@ -74,7 +77,7 @@ BEGIN
 		('operator'), ('operator class'), ('operator family'), ('rule'), ('trigger'),
 		('text search parser'), ('text search dictionary'),
 		('text search template'), ('text search configuration'),
-		('policy'), ('user mapping'), ('default acl'),
+		('policy'), ('user mapping'), ('default acl'), ('transform'),
 		('operator of access method'), ('function of access method')
 	LOOP
 		FOR names IN VALUES ('{eins}'), ('{addr_nsp, zwei}'), ('{eins, zwei, drei}')
@@ -162,7 +165,8 @@ WITH objects (type, name, args) AS (VALUES
 				('default acl', '{regtest_addr_user}', '{r}'),
 				-- extension
 				-- event trigger
-				('policy', '{addr_nsp, gentable, genpol}', '{}')
+				('policy', '{addr_nsp, gentable, genpol}', '{}'),
+				('transform', '{int}', '{sql}')
         )
 SELECT (pg_identify_object(addr1.classid, addr1.objid, addr1.subobjid)).*,
 	-- test roundtrip through pg_identify_object_as_address