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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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15
src/backend/optimizer/util/clauses.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/util/clauses.c,v 1.284 2010/01/19 16:33:33 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/util/clauses.c,v 1.285 2010/02/14 18:42:15 rhaas Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@@ -490,9 +490,8 @@ count_agg_clauses_walker(Node *node, AggClauseCounts *counts)
}
/* fetch aggregate transition datatype from pg_aggregate */
aggTuple = SearchSysCache(AGGFNOID,
ObjectIdGetDatum(aggref->aggfnoid),
0, 0, 0);
aggTuple = SearchSysCache1(AGGFNOID,
ObjectIdGetDatum(aggref->aggfnoid));
if (!HeapTupleIsValid(aggTuple))
elog(ERROR, "cache lookup failed for aggregate %u",
aggref->aggfnoid);
@@ -3288,9 +3287,7 @@ simplify_function(Oid funcid, Oid result_type, int32 result_typmod,
* to the function's pg_proc tuple, so fetch it just once to use in both
* attempts.
*/
func_tuple = SearchSysCache(PROCOID,
ObjectIdGetDatum(funcid),
0, 0, 0);
func_tuple = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcid));
if (!HeapTupleIsValid(func_tuple))
elog(ERROR, "cache lookup failed for function %u", funcid);
@@ -4149,9 +4146,7 @@ inline_set_returning_function(PlannerInfo *root, RangeTblEntry *rte)
/*
* OK, let's take a look at the function's pg_proc entry.
*/
func_tuple = SearchSysCache(PROCOID,
ObjectIdGetDatum(func_oid),
0, 0, 0);
func_tuple = SearchSysCache1(PROCOID, ObjectIdGetDatum(func_oid));
if (!HeapTupleIsValid(func_tuple))
elog(ERROR, "cache lookup failed for function %u", func_oid);
funcform = (Form_pg_proc) GETSTRUCT(func_tuple);