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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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19
src/backend/commands/aggregatecmds.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/aggregatecmds.c,v 1.51 2010/01/02 16:57:36 momjian Exp $
* $PostgreSQL: pgsql/src/backend/commands/aggregatecmds.c,v 1.52 2010/02/14 18:42:13 rhaas Exp $
*
* DESCRIPTION
* The "DefineFoo" routines take the parse tree and pick out the
@ -236,9 +236,7 @@ RemoveAggregate(RemoveFuncStmt *stmt)
/*
* Find the function tuple, do permissions and validity checks
*/
tup = SearchSysCache(PROCOID,
ObjectIdGetDatum(procOid),
0, 0, 0);
tup = SearchSysCache1(PROCOID, ObjectIdGetDatum(procOid));
if (!HeapTupleIsValid(tup)) /* should not happen */
elog(ERROR, "cache lookup failed for function %u", procOid);
@ -277,9 +275,7 @@ RenameAggregate(List *name, List *args, const char *newname)
/* Look up function and make sure it's an aggregate */
procOid = LookupAggNameTypeNames(name, args, false);
tup = SearchSysCacheCopy(PROCOID,
ObjectIdGetDatum(procOid),
0, 0, 0);
tup = SearchSysCacheCopy1(PROCOID, ObjectIdGetDatum(procOid));
if (!HeapTupleIsValid(tup)) /* should not happen */
elog(ERROR, "cache lookup failed for function %u", procOid);
procForm = (Form_pg_proc) GETSTRUCT(tup);
@ -287,11 +283,10 @@ RenameAggregate(List *name, List *args, const char *newname)
namespaceOid = procForm->pronamespace;
/* make sure the new name doesn't exist */
if (SearchSysCacheExists(PROCNAMEARGSNSP,
CStringGetDatum(newname),
PointerGetDatum(&procForm->proargtypes),
ObjectIdGetDatum(namespaceOid),
0))
if (SearchSysCacheExists3(PROCNAMEARGSNSP,
CStringGetDatum(newname),
PointerGetDatum(&procForm->proargtypes),
ObjectIdGetDatum(namespaceOid)))
ereport(ERROR,
(errcode(ERRCODE_DUPLICATE_FUNCTION),
errmsg("function %s already exists in schema \"%s\"",