database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-07 00:36:50 +03:00
Code Activity

Rule names are now unique per-relation, rather than unique globally.

Browse Source 
DROP RULE and COMMENT ON RULE syntax adds an 'ON tablename' clause,
similar to TRIGGER syntaxes.  To allow loading of existing pg_dump
files containing COMMENT ON RULE, the COMMENT code will still accept
the old syntax --- but only if the target rulename is unique across
the whole database.
This commit is contained in:
Tom Lane
2002-04-18 20:01:11 +00:00
parent 4e08a625b0
commit b3120804ad
35 changed files with 489 additions and 300 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
src/backend/rewrite/rewriteDefine.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/rewrite/rewriteDefine.c,v 1.66 2002/03/26 19:16:02 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/rewrite/rewriteDefine.c,v 1.67 2002/04/18 20:01:09 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -37,7 +37,7 @@ static bool setRuleCheckAsUser_walker(Node *node, Oid *context);
/*
* InsertRule -
* takes the arguments and inserts them as attributes into the system
* takes the arguments and inserts them as a row into the system
* relation "pg_rewrite"
*/
static Oid
@ -58,7 +58,7 @@ InsertRule(char *rulname,
HeapTuple tup;
Oid rewriteObjectId;
if (IsDefinedRewriteRule(rulname))
if (IsDefinedRewriteRule(eventrel_oid, rulname))
elog(ERROR, "Attempt to insert rule \"%s\" failed: already exists",
rulname);
@ -69,13 +69,13 @@ InsertRule(char *rulname,
i = 0;
namestrcpy(&rname, rulname);
values[i++] = NameGetDatum(&rname);
values[i++] = CharGetDatum(evtype + '0');
values[i++] = ObjectIdGetDatum(eventrel_oid);
values[i++] = Int16GetDatum(evslot_index);
values[i++] = BoolGetDatum(evinstead);
values[i++] = DirectFunctionCall1(textin, CStringGetDatum(evqual));
values[i++] = DirectFunctionCall1(textin, CStringGetDatum(actiontree));
values[i++] = NameGetDatum(&rname); /* rulename */
values[i++] = ObjectIdGetDatum(eventrel_oid); /* ev_class */
values[i++] = Int16GetDatum(evslot_index); /* ev_attr */
values[i++] = CharGetDatum(evtype + '0'); /* ev_type */
values[i++] = BoolGetDatum(evinstead); /* is_instead */
values[i++] = DirectFunctionCall1(textin, CStringGetDatum(evqual)); /* ev_qual */
values[i++] = DirectFunctionCall1(textin, CStringGetDatum(actiontree)); /* ev_action */
/*
* create a new pg_rewrite tuple
@ -423,26 +423,27 @@ setRuleCheckAsUser_walker(Node *node, Oid *context)
* ON SELECT rule associated with a view, when the view is renamed.
*/
void
RenameRewriteRule(char *oldname, char *newname)
RenameRewriteRule(Oid owningRel, const char *oldName,
const char *newName)
{
Relation pg_rewrite_desc;
HeapTuple ruletup;
pg_rewrite_desc = heap_openr(RewriteRelationName, RowExclusiveLock);
ruletup = SearchSysCacheCopy(RULENAME,
PointerGetDatum(oldname),
0, 0, 0);
ruletup = SearchSysCacheCopy(RULERELNAME,
ObjectIdGetDatum(owningRel),
PointerGetDatum(oldName),
0, 0);
if (!HeapTupleIsValid(ruletup))
elog(ERROR, "RenameRewriteRule: rule \"%s\" does not exist", oldname);
elog(ERROR, "RenameRewriteRule: rule \"%s\" does not exist", oldName);
/* should not already exist */
if (IsDefinedRewriteRule(newname))
if (IsDefinedRewriteRule(owningRel, newName))
elog(ERROR, "Attempt to rename rule \"%s\" failed: \"%s\" already exists",
oldname, newname);
oldName, newName);
StrNCpy(NameStr(((Form_pg_rewrite) GETSTRUCT(ruletup))->rulename),
newname, NAMEDATALEN);
namestrcpy(&(((Form_pg_rewrite) GETSTRUCT(ruletup))->rulename), newName);
simple_heap_update(pg_rewrite_desc, &ruletup->t_self, ruletup);