mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-07-22 05:39:37 +02:00
27b8143944
I have updated my contrib code for version 6.5. In the attachment you will find the directories array, datetime, miscutil, string, tools and userlocks which replace the corresponding directories under contrib. In contrib/tools you will find some developement scripts which I use while hacking the sources. I hope they will be useful for some other people. I have also added a contrib/Makefile which tries to compile and install all the contribs. Unfortunately many of them don't have a Makefile or don't compile cleanly. -- Massimo Dal Zotto
398 lines
8.4 KiB
C
398 lines
8.4 KiB
C
/*
|
|
* array_iterator.c --
|
|
*
|
|
* This file defines a new class of operators which take an
|
|
* array and a scalar value, iterate a scalar operator over the
|
|
* elements of the array and the value and compute a result as
|
|
* the logical OR or AND of the iteration results.
|
|
*
|
|
* Copyright (c) 1997, Massimo Dal Zotto <dz@cs.unitn.it>
|
|
* ported to postgreSQL 6.3.2,added oid_functions, 18.1.1999,
|
|
* Tobias Gabele <gabele@wiz.uni-kassel.de>
|
|
*/
|
|
|
|
#include <ctype.h>
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <string.h>
|
|
|
|
#include "postgres.h"
|
|
#include "miscadmin.h"
|
|
#include "access/xact.h"
|
|
#include "fmgr.h"
|
|
#include "catalog/pg_type.h"
|
|
#include "utils/array.h"
|
|
#include "utils/builtins.h"
|
|
#include "utils/memutils.h"
|
|
#include "utils/syscache.h"
|
|
|
|
#include "array_iterator.h"
|
|
|
|
static int32
|
|
array_iterator(Oid elemtype, Oid proc, int and, ArrayType *array, Datum value)
|
|
{
|
|
HeapTuple typ_tuple;
|
|
Form_pg_type typ_struct;
|
|
bool typbyval;
|
|
int typlen;
|
|
func_ptr proc_fn;
|
|
int pronargs;
|
|
int nitems,
|
|
i,
|
|
result;
|
|
int ndim,
|
|
*dim;
|
|
char *p;
|
|
FmgrInfo finf; /* Tobias Gabele Jan 18 1999 */
|
|
|
|
|
|
/* Sanity checks */
|
|
if ((array == (ArrayType *) NULL)
|
|
|| (ARR_IS_LO(array) == true))
|
|
{
|
|
/* elog(NOTICE, "array_iterator: array is null"); */
|
|
return (0);
|
|
}
|
|
ndim = ARR_NDIM(array);
|
|
dim = ARR_DIMS(array);
|
|
nitems = getNitems(ndim, dim);
|
|
if (nitems == 0)
|
|
{
|
|
/* elog(NOTICE, "array_iterator: nitems = 0"); */
|
|
return (0);
|
|
}
|
|
|
|
/* Lookup element type information */
|
|
typ_tuple = SearchSysCacheTuple(TYPOID, ObjectIdGetDatum(elemtype), 0, 0, 0);
|
|
if (!HeapTupleIsValid(typ_tuple))
|
|
{
|
|
elog(ERROR, "array_iterator: cache lookup failed for type %d", elemtype);
|
|
return 0;
|
|
}
|
|
typ_struct = (Form_pg_type) GETSTRUCT(typ_tuple);
|
|
typlen = typ_struct->typlen;
|
|
typbyval = typ_struct->typbyval;
|
|
|
|
/* Lookup the function entry point */
|
|
proc_fn = (func_ptr) NULL;
|
|
fmgr_info(proc, &finf); /* Tobias Gabele Jan 18 1999 */
|
|
proc_fn = finf.fn_addr; /* Tobias Gabele Jan 18 1999 */
|
|
pronargs = finf.fn_nargs; /* Tobias Gabele Jan 18 1999 */
|
|
if ((proc_fn == NULL) || (pronargs != 2))
|
|
{
|
|
elog(ERROR, "array_iterator: fmgr_info lookup failed for oid %d", proc);
|
|
return (0);
|
|
}
|
|
|
|
/* Scan the array and apply the operator to each element */
|
|
result = 0;
|
|
p = ARR_DATA_PTR(array);
|
|
for (i = 0; i < nitems; i++)
|
|
{
|
|
if (typbyval)
|
|
{
|
|
switch (typlen)
|
|
{
|
|
case 1:
|
|
result = (int) (*proc_fn) (*p, value);
|
|
break;
|
|
case 2:
|
|
result = (int) (*proc_fn) (*(int16 *) p, value);
|
|
break;
|
|
case 3:
|
|
case 4:
|
|
result = (int) (*proc_fn) (*(int32 *) p, value);
|
|
break;
|
|
}
|
|
p += typlen;
|
|
}
|
|
else
|
|
{
|
|
result = (int) (*proc_fn) (p, value);
|
|
if (typlen > 0)
|
|
p += typlen;
|
|
else
|
|
p += INTALIGN(*(int32 *) p);
|
|
}
|
|
if (result)
|
|
{
|
|
if (!and)
|
|
return (1);
|
|
}
|
|
else
|
|
{
|
|
if (and)
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
if (and && result)
|
|
return (1);
|
|
else
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Iterator functions for type _text
|
|
*/
|
|
|
|
int32
|
|
array_texteq(ArrayType *array, char *value)
|
|
{
|
|
return array_iterator((Oid) 25, /* text */
|
|
(Oid) 67, /* texteq */
|
|
0, /* logical or */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_all_texteq(ArrayType *array, char *value)
|
|
{
|
|
return array_iterator((Oid) 25, /* text */
|
|
(Oid) 67, /* texteq */
|
|
1, /* logical and */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_textregexeq(ArrayType *array, char *value)
|
|
{
|
|
return array_iterator((Oid) 25, /* text */
|
|
(Oid) 1254, /* textregexeq */
|
|
0, /* logical or */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_all_textregexeq(ArrayType *array, char *value)
|
|
{
|
|
return array_iterator((Oid) 25, /* text */
|
|
(Oid) 1254, /* textregexeq */
|
|
1, /* logical and */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
/*
|
|
* Iterator functions for type _varchar. Note that the regexp
|
|
* operators take the second argument of type text.
|
|
*/
|
|
|
|
int32
|
|
array_varchareq(ArrayType *array, char *value)
|
|
{
|
|
return array_iterator((Oid) 20, /* varchar */
|
|
(Oid) 1070, /* varchareq */
|
|
0, /* logical or */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_all_varchareq(ArrayType *array, char *value)
|
|
{
|
|
return array_iterator((Oid) 20, /* varchar */
|
|
(Oid) 1070, /* varchareq */
|
|
1, /* logical and */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_varcharregexeq(ArrayType *array, char *value)
|
|
{
|
|
return array_iterator((Oid) 20, /* varchar */
|
|
(Oid) 1254, /* textregexeq */
|
|
0, /* logical or */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_all_varcharregexeq(ArrayType *array, char *value)
|
|
{
|
|
return array_iterator((Oid) 20, /* varchar */
|
|
(Oid) 1254, /* textregexeq */
|
|
1, /* logical and */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
/*
|
|
* Iterator functions for type _bpchar. Note that the regexp
|
|
* operators take the second argument of type text.
|
|
*/
|
|
|
|
int32
|
|
array_bpchareq(ArrayType *array, char *value)
|
|
{
|
|
return array_iterator((Oid) 20, /* bpchar */
|
|
(Oid) 1048, /* bpchareq */
|
|
0, /* logical or */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_all_bpchareq(ArrayType *array, char *value)
|
|
{
|
|
return array_iterator((Oid) 20, /* bpchar */
|
|
(Oid) 1048, /* bpchareq */
|
|
1, /* logical and */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_bpcharregexeq(ArrayType *array, char *value)
|
|
{
|
|
return array_iterator((Oid) 20, /* bpchar */
|
|
(Oid) 1254, /* textregexeq */
|
|
0, /* logical or */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_all_bpcharregexeq(ArrayType *array, char *value)
|
|
{
|
|
return array_iterator((Oid) 20, /* bpchar */
|
|
(Oid) 1254, /* textregexeq */
|
|
1, /* logical and */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
/*
|
|
* Iterator functions for type _int4
|
|
*/
|
|
|
|
int32
|
|
array_int4eq(ArrayType *array, int4 value)
|
|
{
|
|
return array_iterator((Oid) 23, /* int4 */
|
|
(Oid) 65, /* int4eq */
|
|
0, /* logical or */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_all_int4eq(ArrayType *array, int4 value)
|
|
{
|
|
return array_iterator((Oid) 23, /* int4 */
|
|
(Oid) 65, /* int4eq */
|
|
1, /* logical and */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_int4ne(ArrayType *array, int4 value)
|
|
{
|
|
return array_iterator((Oid) 23, /* int4 */
|
|
(Oid) 144, /* int4ne */
|
|
0, /* logical or */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_all_int4ne(ArrayType *array, int4 value)
|
|
{
|
|
return array_iterator((Oid) 23, /* int4 */
|
|
(Oid) 144, /* int4ne */
|
|
1, /* logical and */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_int4gt(ArrayType *array, int4 value)
|
|
{
|
|
return array_iterator((Oid) 23, /* int4 */
|
|
(Oid) 147, /* int4gt */
|
|
0, /* logical or */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_all_int4gt(ArrayType *array, int4 value)
|
|
{
|
|
return array_iterator((Oid) 23, /* int4 */
|
|
(Oid) 147, /* int4gt */
|
|
1, /* logical and */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_int4ge(ArrayType *array, int4 value)
|
|
{
|
|
return array_iterator((Oid) 23, /* int4 */
|
|
(Oid) 150, /* int4ge */
|
|
0, /* logical or */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_all_int4ge(ArrayType *array, int4 value)
|
|
{
|
|
return array_iterator((Oid) 23, /* int4 */
|
|
(Oid) 150, /* int4ge */
|
|
1, /* logical and */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_int4lt(ArrayType *array, int4 value)
|
|
{
|
|
return array_iterator((Oid) 23, /* int4 */
|
|
(Oid) 66, /* int4lt */
|
|
0, /* logical or */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_all_int4lt(ArrayType *array, int4 value)
|
|
{
|
|
return array_iterator((Oid) 23, /* int4 */
|
|
(Oid) 66, /* int4lt */
|
|
1, /* logical and */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_int4le(ArrayType *array, int4 value)
|
|
{
|
|
return array_iterator((Oid) 23, /* int4 */
|
|
(Oid) 149, /* int4le */
|
|
0, /* logical or */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_all_int4le(ArrayType *array, int4 value)
|
|
{
|
|
return array_iterator((Oid) 23, /* int4 */
|
|
(Oid) 149, /* int4le */
|
|
1, /* logical and */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
/* new tobias gabele 1999 */
|
|
|
|
int32
|
|
array_oideq(ArrayType *array, Oid value)
|
|
{
|
|
return array_iterator((Oid) 26, /* oid */
|
|
(Oid) 184, /* oideq */
|
|
0, /* logical or */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
int32
|
|
array_all_oidne(ArrayType *array, Oid value)
|
|
{
|
|
return array_iterator((Oid) 26, /* int4 */
|
|
(Oid) 185, /* oidne */
|
|
1, /* logical and */
|
|
array, (Datum) value);
|
|
}
|
|
|
|
/* end of file */
|
|
|
|
/*
|
|
* Local Variables:
|
|
* tab-width: 4
|
|
* c-indent-level: 4
|
|
* c-basic-offset: 4
|
|
* End:
|
|
*/
|