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Add get_func_rettype() to general-use lsyscache routines, 

since it's now needed in both optimizer and parser.
This commit is contained in:
Tom Lane 1999-08-16 02:06:25 +00:00
parent bab13a70ff
commit b1baf1ff60
2 changed files with 29 additions and 2 deletions
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28
src/backend/utils/cache/lsyscache.c vendored
View File

@ -6,7 +6,7 @@
* Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/cache/lsyscache.c,v 1.32 1999/08/09 03:13:30 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/lsyscache.c,v 1.33 1999/08/16 02:06:25 tgl Exp $
*
* NOTES
* Eventually, the index information should go through here, too.
@ -15,6 +15,7 @@
#include "postgres.h"
#include "catalog/pg_operator.h"
#include "catalog/pg_proc.h"
#include "catalog/pg_type.h"
#include "utils/lsyscache.h"
#include "utils/syscache.h"
@ -453,6 +454,31 @@ get_oprjoin(Oid opno)
return (RegProcedure) NULL;
}
/* ---------- FUNCTION CACHE ---------- */
/*
* get_func_rettype
* Given procedure id, return the function's result type.
*/
Oid
get_func_rettype(Oid funcid)
{
HeapTuple func_tuple;
Oid funcrettype;
func_tuple = SearchSysCacheTuple(PROOID,
ObjectIdGetDatum(funcid),
0, 0, 0);
if (!HeapTupleIsValid(func_tuple))
elog(ERROR, "Function OID %u does not exist", funcid);
funcrettype = (Oid)
((Form_pg_proc) GETSTRUCT(func_tuple))->prorettype;
return funcrettype;
}
/* ---------- RELATION CACHE ---------- */
/*

3
src/include/utils/lsyscache.h
View File

@ -5,7 +5,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: lsyscache.h,v 1.19 1999/08/09 03:13:28 tgl Exp $
* $Id: lsyscache.h,v 1.20 1999/08/16 02:06:23 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -32,6 +32,7 @@ extern HeapTuple get_operator_tuple(Oid opno);
extern Oid get_negator(Oid opid);
extern RegProcedure get_oprrest(Oid opid);
extern RegProcedure get_oprjoin(Oid opid);
extern Oid get_func_rettype(Oid funcid);
extern int get_relnatts(Oid relid);
extern char *get_rel_name(Oid relid);
extern struct varlena *get_relstub(Oid relid, int no, bool *islast);