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/*-------------------------------------------------------------------------
*
* indexvalid.c--
* index tuple qualification validity checking code
*
* Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/common/Attic/indexvalid.c,v 1.1.1.1 1996/07/09 06:21:09 scrappy Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "executor/execdebug.h"
#include "access/genam.h"
#include "access/iqual.h" /* where the declarations go */
#include "access/itup.h"
#include "access/skey.h"
#include "storage/buf.h"
#include "storage/bufpage.h"
#include "storage/itemid.h"
#include "utils/rel.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;
int test;
IncrIndexProcessed();
while (scanKeySize > 0) {
datum = index_getattr(tuple,
1,
tupdesc,
&isNull);
if (isNull) {
/* XXX eventually should check if SK_ISNULL */
return (false);
}
if (key[0].sk_flags & SK_COMMUTE) {
test = (int) (*(key[0].sk_func))
(DatumGetPointer(key[0].sk_argument),
datum);
} else {
test = (int) (*(key[0].sk_func))
(datum,
DatumGetPointer(key[0].sk_argument));
}
if (!test == !(key[0].sk_flags & SK_NEGATE)) {
return (false);
}
scanKeySize -= 1;
key++;
}
return (true);
}
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