111944c5ee
A lot of files only included heapam.h for relation_open, heap_open etc - replace the heapam.h include in those files with the narrower header. Author: Andres Freund Discussion: https://postgr.es/m/20190111000539.xbv7s6w7ilcvm7dp@alap3.anarazel.de
94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
/*-------------------------------------------------------------------------
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*
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* rewriteRemove.c
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* routines for removing rewrite rules
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*
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* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* src/backend/rewrite/rewriteRemove.c
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include "access/genam.h"
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#include "access/htup_details.h"
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#include "access/sysattr.h"
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#include "access/table.h"
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#include "catalog/dependency.h"
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#include "catalog/indexing.h"
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#include "catalog/namespace.h"
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#include "catalog/pg_rewrite.h"
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#include "miscadmin.h"
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#include "rewrite/rewriteRemove.h"
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#include "utils/acl.h"
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#include "utils/fmgroids.h"
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#include "utils/inval.h"
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#include "utils/lsyscache.h"
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#include "utils/syscache.h"
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#include "utils/tqual.h"
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/*
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* Guts of rule deletion.
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*/
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void
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RemoveRewriteRuleById(Oid ruleOid)
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{
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Relation RewriteRelation;
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ScanKeyData skey[1];
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SysScanDesc rcscan;
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Relation event_relation;
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HeapTuple tuple;
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Oid eventRelationOid;
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/*
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* Open the pg_rewrite relation.
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*/
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RewriteRelation = heap_open(RewriteRelationId, RowExclusiveLock);
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/*
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* Find the tuple for the target rule.
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*/
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ScanKeyInit(&skey[0],
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Anum_pg_rewrite_oid,
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BTEqualStrategyNumber, F_OIDEQ,
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ObjectIdGetDatum(ruleOid));
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rcscan = systable_beginscan(RewriteRelation, RewriteOidIndexId, true,
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NULL, 1, skey);
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tuple = systable_getnext(rcscan);
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if (!HeapTupleIsValid(tuple))
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elog(ERROR, "could not find tuple for rule %u", ruleOid);
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/*
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* We had better grab AccessExclusiveLock to ensure that no queries are
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* going on that might depend on this rule. (Note: a weaker lock would
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* suffice if it's not an ON SELECT rule.)
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*/
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eventRelationOid = ((Form_pg_rewrite) GETSTRUCT(tuple))->ev_class;
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event_relation = heap_open(eventRelationOid, AccessExclusiveLock);
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/*
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* Now delete the pg_rewrite tuple for the rule
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*/
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CatalogTupleDelete(RewriteRelation, &tuple->t_self);
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systable_endscan(rcscan);
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heap_close(RewriteRelation, RowExclusiveLock);
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/*
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* Issue shared-inval notice to force all backends (including me!) to
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* update relcache entries with the new rule set.
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*/
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CacheInvalidateRelcache(event_relation);
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/* Close rel, but keep lock till commit... */
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heap_close(event_relation, NoLock);
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}
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