mirror of
https://github.com/simtactics/niotso.git
synced 2025-03-28 13:47:45 +00:00
69 lines
1.4 KiB
C
69 lines
1.4 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* valid.h
|
|
* POSTGRES tuple qualification validity definitions.
|
|
*
|
|
*
|
|
* Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* src/include/access/valid.h
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef VALID_H
|
|
#define VALID_H
|
|
|
|
/*
|
|
* HeapKeyTest
|
|
*
|
|
* Test a heap tuple to see if it satisfies a scan key.
|
|
*/
|
|
#define HeapKeyTest(tuple, \
|
|
tupdesc, \
|
|
nkeys, \
|
|
keys, \
|
|
result) \
|
|
do \
|
|
{ \
|
|
/* Use underscores to protect the variables passed in as parameters */ \
|
|
int __cur_nkeys = (nkeys); \
|
|
ScanKey __cur_keys = (keys); \
|
|
\
|
|
(result) = true; /* may change */ \
|
|
for (; __cur_nkeys--; __cur_keys++) \
|
|
{ \
|
|
Datum __atp; \
|
|
bool __isnull; \
|
|
Datum __test; \
|
|
\
|
|
if (__cur_keys->sk_flags & SK_ISNULL) \
|
|
{ \
|
|
(result) = false; \
|
|
break; \
|
|
} \
|
|
\
|
|
__atp = heap_getattr((tuple), \
|
|
__cur_keys->sk_attno, \
|
|
(tupdesc), \
|
|
&__isnull); \
|
|
\
|
|
if (__isnull) \
|
|
{ \
|
|
(result) = false; \
|
|
break; \
|
|
} \
|
|
\
|
|
__test = FunctionCall2Coll(&__cur_keys->sk_func, \
|
|
__cur_keys->sk_collation, \
|
|
__atp, __cur_keys->sk_argument); \
|
|
\
|
|
if (!DatumGetBool(__test)) \
|
|
{ \
|
|
(result) = false; \
|
|
break; \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
#endif /* VALID_H */
|