mirror of
https://github.com/postgres/postgres.git
synced 2025-11-10 17:42:29 +03:00
0f1e39643d
fmgr_faddr() in favor of new-style calls. Lots of cleanup of sloppy casts to use XXXGetDatum and DatumGetXXX ...
83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* indexvalid.c
|
|
* index tuple qualification validity checking code
|
|
*
|
|
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
*
|
|
* IDENTIFICATION
|
|
* $Header: /cvsroot/pgsql/src/backend/access/common/Attic/indexvalid.c,v 1.25 2000/05/30 04:24:27 tgl Exp $
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
|
|
#include "postgres.h"
|
|
|
|
#include "access/iqual.h"
|
|
#include "executor/execdebug.h"
|
|
|
|
/* ----------------------------------------------------------------
|
|
* index scan key qualification code
|
|
* ----------------------------------------------------------------
|
|
*/
|
|
int NIndexTupleProcessed;
|
|
|
|
/* ----------------
|
|
* index_keytest
|
|
*
|
|
* old comments
|
|
* May eventually combine with other tests (like timeranges)?
|
|
* Should have Buffer buffer; as an argument and pass it to amgetattr.
|
|
* ----------------
|
|
*/
|
|
bool
|
|
index_keytest(IndexTuple tuple,
|
|
TupleDesc tupdesc,
|
|
int scanKeySize,
|
|
ScanKey key)
|
|
{
|
|
bool isNull;
|
|
Datum datum;
|
|
Datum test;
|
|
|
|
IncrIndexProcessed();
|
|
|
|
while (scanKeySize > 0)
|
|
{
|
|
datum = index_getattr(tuple,
|
|
key[0].sk_attno,
|
|
tupdesc,
|
|
&isNull);
|
|
|
|
if (isNull)
|
|
{
|
|
/* XXX eventually should check if SK_ISNULL */
|
|
return false;
|
|
}
|
|
|
|
if (key[0].sk_flags & SK_ISNULL)
|
|
return false;
|
|
|
|
if (key[0].sk_flags & SK_COMMUTE)
|
|
{
|
|
test = FunctionCall2(&key[0].sk_func,
|
|
key[0].sk_argument, datum);
|
|
}
|
|
else
|
|
{
|
|
test = FunctionCall2(&key[0].sk_func,
|
|
datum, key[0].sk_argument);
|
|
}
|
|
|
|
if (DatumGetBool(test) == !!(key[0].sk_flags & SK_NEGATE))
|
|
return false;
|
|
|
|
scanKeySize -= 1;
|
|
key++;
|
|
}
|
|
|
|
return true;
|
|
}
|