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Wrap calls to SearchSysCache and related functions using macros.

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The purpose of this change is to eliminate the need for every caller
of SearchSysCache, SearchSysCacheCopy, SearchSysCacheExists,
GetSysCacheOid, and SearchSysCacheList to know the maximum number
of allowable keys for a syscache entry (currently 4).  This will
make it far easier to increase the maximum number of keys in a
future release should we choose to do so, and it makes the code
shorter, too.

Design and review by Tom Lane.
This commit is contained in:
Robert Haas
2010-02-14 18:42:19 +00:00
parent 1012492bc0
commit e26c539e9f
97 changed files with 1125 additions and 2061 deletions
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14
src/backend/utils/adt/ri_triggers.c
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@ -15,7 +15,7 @@
*
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/backend/utils/adt/ri_triggers.c,v 1.117 2010/01/02 16:57:55 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/ri_triggers.c,v 1.118 2010/02/14 18:42:16 rhaas Exp $
*
* ----------
*/
@ -2901,9 +2901,7 @@ ri_GenerateQual(StringInfo buf,
char *oprname;
char *nspname;
opertup = SearchSysCache(OPEROID,
ObjectIdGetDatum(opoid),
0, 0, 0);
opertup = SearchSysCache1(OPEROID, ObjectIdGetDatum(opoid));
if (!HeapTupleIsValid(opertup))
elog(ERROR, "cache lookup failed for operator %u", opoid);
operform = (Form_pg_operator) GETSTRUCT(opertup);
@ -2940,9 +2938,7 @@ ri_add_cast_to(StringInfo buf, Oid typid)
char *typname;
char *nspname;
typetup = SearchSysCache(TYPEOID,
ObjectIdGetDatum(typid),
0, 0, 0);
typetup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typid));
if (!HeapTupleIsValid(typetup))
elog(ERROR, "cache lookup failed for type %u", typid);
typform = (Form_pg_type) GETSTRUCT(typetup);
@ -3071,9 +3067,7 @@ ri_FetchConstraintInfo(RI_ConstraintInfo *riinfo,
errhint("Remove this referential integrity trigger and its mates, then do ALTER TABLE ADD CONSTRAINT.")));
/* OK, fetch the tuple */
tup = SearchSysCache(CONSTROID,
ObjectIdGetDatum(constraintOid),
0, 0, 0);
tup = SearchSysCache1(CONSTROID, ObjectIdGetDatum(constraintOid));
if (!HeapTupleIsValid(tup)) /* should not happen */
elog(ERROR, "cache lookup failed for constraint %u", constraintOid);
conForm = (Form_pg_constraint) GETSTRUCT(tup);