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Automatic view update rules

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Bernd Helmle
This commit is contained in:
Peter Eisentraut
2009-01-22 17:27:55 +00:00
parent 5841aa86eb
commit dd7e54a17f
30 changed files with 2289 additions and 41 deletions
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35
src/backend/rewrite/rewriteRemove.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/rewrite/rewriteRemove.c,v 1.75 2009/01/01 17:23:47 momjian Exp $
* $PostgreSQL: pgsql/src/backend/rewrite/rewriteRemove.c,v 1.76 2009/01/22 17:27:54 petere Exp $
*
*-------------------------------------------------------------------------
*/
@ -90,6 +90,39 @@ RemoveRewriteRule(Oid owningRel, const char *ruleName, DropBehavior behavior,
performDeletion(&object, behavior);
}
/*
* RemoveAutomaticRulesOnEvent
*
* This will delete automatic rules, if any exist, on the event in the
* relation.
*/
void
RemoveAutomaticRulesOnEvent(Relation rel, CmdType event_type)
{
RuleLock *rulelocks = rel->rd_rules;
int i;
/* If there are no rules on the relation, waste no more time. */
if (rulelocks == NULL)
return;
/*
* Look at all rules looking for the ones that are on the event
* and are automatic.
*/
for (i = 0; i < rulelocks->numLocks; i++)
{
RewriteRule *oneLock = rulelocks->rules[i];
if (oneLock->event == event_type && oneLock->is_auto)
{
RemoveRewriteRuleById(oneLock->ruleId);
elog(DEBUG1, "removing automatic rule with OID %u\n",
oneLock->ruleId);
deleteDependencyRecordsFor(RewriteRelationId, oneLock->ruleId);
}
}
}
/*
* Guts of rule deletion.