Temporary kluge to let RI triggers work on tables outside the system

catalog namespace.  This will not do as a production solution because
the interpretation of RI trigger arguments will vary depending on the
current namespace search path.  I'm just putting it in so that the RI
regression tests don't fail while schema development proceeds.  We
must find a better answer before 7.3 can be released.

src/backend/utils/adt/ri_triggers.c

@@ -18,7 +18,7 @@
  * Portions Copyright (c) 2000-2001, PostgreSQL Global Development Group
  * Copyright 1999 Jan Wieck
  *
- * $Header: /cvsroot/pgsql/src/backend/utils/adt/ri_triggers.c,v 1.33 2002/03/19 02:57:15 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/utils/adt/ri_triggers.c,v 1.34 2002/04/01 02:02:34 tgl Exp $
  *
  * ----------
  */
@@ -36,6 +36,7 @@
 #include "catalog/pg_operator.h"
 #include "commands/trigger.h"
 #include "executor/spi_priv.h"
+#include "nodes/makefuncs.h"
 #include "miscadmin.h"
 
 
@@ -137,6 +138,18 @@ static void *ri_FetchPreparedPlan(RI_QueryKey *key);
 static void ri_HashPreparedPlan(RI_QueryKey *key, void *plan);
 
 
+/*
+ * very ugly, very temporary hack to allow RI triggers to find tables
+ * anywhere in the current search path.  This is just so that the regression
+ * tests don't break with new search path code; we MUST find a more bullet
+ * proof solution before release.
+ */
+static Relation
+kluge_openr(char *relationName, LOCKMODE lockmode)
+{
+	return heap_openrv(makeRangeVar(NULL, relationName), lockmode);
+}
+
 
 /* ----------
  * RI_FKey_check -
@@ -196,7 +209,7 @@ RI_FKey_check(PG_FUNCTION_ARGS)
 	 * tuple.
 	 */
 	fk_rel = trigdata->tg_relation;
-	pk_rel = heap_openr(tgargs[RI_PK_RELNAME_ARGNO], NoLock);
+	pk_rel = kluge_openr(tgargs[RI_PK_RELNAME_ARGNO], NoLock);
 	if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
 	{
 		old_row = trigdata->tg_trigtuple;
@@ -563,7 +576,7 @@ RI_FKey_noaction_del(PG_FUNCTION_ARGS)
 	 * Get the relation descriptors of the FK and PK tables and the old
 	 * tuple.
 	 */
-	fk_rel = heap_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
+	fk_rel = kluge_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
 	pk_rel = trigdata->tg_relation;
 	old_row = trigdata->tg_trigtuple;
 
@@ -769,7 +782,7 @@ RI_FKey_noaction_upd(PG_FUNCTION_ARGS)
 	 * Get the relation descriptors of the FK and PK tables and the new
 	 * and old tuple.
 	 */
-	fk_rel = heap_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
+	fk_rel = kluge_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
 	pk_rel = trigdata->tg_relation;
 	new_row = trigdata->tg_newtuple;
 	old_row = trigdata->tg_trigtuple;
@@ -979,7 +992,7 @@ RI_FKey_cascade_del(PG_FUNCTION_ARGS)
 	 * Get the relation descriptors of the FK and PK tables and the old
 	 * tuple.
 	 */
-	fk_rel = heap_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
+	fk_rel = kluge_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
 	fk_owner = RelationGetForm(fk_rel)->relowner;
 	pk_rel = trigdata->tg_relation;
 	old_row = trigdata->tg_trigtuple;
@@ -1174,7 +1187,7 @@ RI_FKey_cascade_upd(PG_FUNCTION_ARGS)
 	 * Get the relation descriptors of the FK and PK tables and the new
 	 * and old tuple.
 	 */
-	fk_rel = heap_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
+	fk_rel = kluge_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
 	fk_owner = RelationGetForm(fk_rel)->relowner;
 	pk_rel = trigdata->tg_relation;
 	new_row = trigdata->tg_newtuple;
@@ -1403,7 +1416,7 @@ RI_FKey_restrict_del(PG_FUNCTION_ARGS)
 	 * Get the relation descriptors of the FK and PK tables and the old
 	 * tuple.
 	 */
-	fk_rel = heap_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
+	fk_rel = kluge_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
 	fk_owner = RelationGetForm(fk_rel)->relowner;
 	pk_rel = trigdata->tg_relation;
 	old_row = trigdata->tg_trigtuple;
@@ -1615,7 +1628,7 @@ RI_FKey_restrict_upd(PG_FUNCTION_ARGS)
 	 * Get the relation descriptors of the FK and PK tables and the new
 	 * and old tuple.
 	 */
-	fk_rel = heap_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
+	fk_rel = kluge_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
 	fk_owner = RelationGetForm(fk_rel)->relowner;
 	pk_rel = trigdata->tg_relation;
 	new_row = trigdata->tg_newtuple;
@@ -1829,7 +1842,7 @@ RI_FKey_setnull_del(PG_FUNCTION_ARGS)
 	 * Get the relation descriptors of the FK and PK tables and the old
 	 * tuple.
 	 */
-	fk_rel = heap_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
+	fk_rel = kluge_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
 	fk_owner = RelationGetForm(fk_rel)->relowner;
 	pk_rel = trigdata->tg_relation;
 	old_row = trigdata->tg_trigtuple;
@@ -2036,7 +2049,7 @@ RI_FKey_setnull_upd(PG_FUNCTION_ARGS)
 	 * Get the relation descriptors of the FK and PK tables and the old
 	 * tuple.
 	 */
-	fk_rel = heap_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
+	fk_rel = kluge_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
 	fk_owner = RelationGetForm(fk_rel)->relowner;
 	pk_rel = trigdata->tg_relation;
 	new_row = trigdata->tg_newtuple;
@@ -2286,7 +2299,7 @@ RI_FKey_setdefault_del(PG_FUNCTION_ARGS)
 	 * Get the relation descriptors of the FK and PK tables and the old
 	 * tuple.
 	 */
-	fk_rel = heap_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
+	fk_rel = kluge_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
 	fk_owner = RelationGetForm(fk_rel)->relowner;
 	pk_rel = trigdata->tg_relation;
 	old_row = trigdata->tg_trigtuple;
@@ -2537,7 +2550,7 @@ RI_FKey_setdefault_upd(PG_FUNCTION_ARGS)
 	 * Get the relation descriptors of the FK and PK tables and the old
 	 * tuple.
 	 */
-	fk_rel = heap_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
+	fk_rel = kluge_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
 	fk_owner = RelationGetForm(fk_rel)->relowner;
 	pk_rel = trigdata->tg_relation;
 	new_row = trigdata->tg_newtuple;
@@ -2793,7 +2806,7 @@ RI_FKey_keyequal_upd(TriggerData *trigdata)
 	 * Get the relation descriptors of the FK and PK tables and the new
 	 * and old tuple.
 	 */
-	fk_rel = heap_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
+	fk_rel = kluge_openr(tgargs[RI_FK_RELNAME_ARGNO], NoLock);
 	pk_rel = trigdata->tg_relation;
 	new_row = trigdata->tg_newtuple;
 	old_row = trigdata->tg_trigtuple;