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Revision 18701, 20.5 KB checked in by nanasess, 14 years ago (diff)
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1	<?php
2	/*
3	v4.992 10 Nov 2009 (c) 2006 John Lim (jlim#natsoft.com). All rights reserved.
4
5	This is a version of the ADODB driver for DB2. It uses the 'ibm_db2' PECL extension
6	for PHP (http://pecl.php.net/package/ibm_db2), which in turn requires DB2 V8.2.2 or
7	higher.
8
9	Originally tested with PHP 5.1.1 and Apache 2.0.55 on Windows XP SP2.
10	More recently tested with PHP 5.1.2 and Apache 2.0.55 on Windows XP SP2.
11
12	This file was ported from "adodb-odbc.inc.php" by Larry Menard, "larry.menard#rogers.com".
13	I ripped out what I believed to be a lot of redundant or obsolete code, but there are
14	probably still some remnants of the ODBC support in this file; I'm relying on reviewers
15	of this code to point out any other things that can be removed.
16	*/
17
18	// security - hide paths
19	if (!defined('ADODB_DIR')) die();
20
21	define("_ADODB_DB2_LAYER", 2 );
22
23	/*--------------------------------------------------------------------------------------
24	--------------------------------------------------------------------------------------*/
25
26
27	class ADODB_db2 extends ADOConnection {
28	var $databaseType = "db2";
29	var $fmtDate = "'Y-m-d'";
30	var $concat_operator = '\|\|';
31
32	var $sysTime = 'CURRENT TIME';
33	var $sysDate = 'CURRENT DATE';
34	var $sysTimeStamp = 'CURRENT TIMESTAMP';
35
36	var $fmtTimeStamp = "'Y-m-d H:i:s'";
37	var $replaceQuote = "''"; // string to use to replace quotes
38	var $dataProvider = "db2";
39	var $hasAffectedRows = true;
40
41	var $binmode = DB2_BINARY;
42
43	var $useFetchArray = false; // setting this to true will make array elements in FETCH_ASSOC mode case-sensitive
44	// breaking backward-compat
45	var $_bindInputArray = false;
46	var $_genIDSQL = "VALUES NEXTVAL FOR %s";
47	var $_genSeqSQL = "CREATE SEQUENCE %s START WITH 1 NO MAXVALUE NO CYCLE";
48	var $_dropSeqSQL = "DROP SEQUENCE %s";
49	var $_autocommit = true;
50	var $_haserrorfunctions = true;
51	var $_lastAffectedRows = 0;
52	var $uCaseTables = true; // for meta* functions, uppercase table names
53	var $hasInsertID = true;
54
55	function _insertid()
56	{
57	return ADOConnection::GetOne('VALUES IDENTITY_VAL_LOCAL()');
58	}
59
60	function ADODB_db2()
61	{
62	$this->_haserrorfunctions = ADODB_PHPVER >= 0x4050;
63	}
64
65	// returns true or false
66	function _connect($argDSN, $argUsername, $argPassword, $argDatabasename)
67	{
68	global $php_errormsg;
69
70	if (!function_exists('db2_connect')) {
71	ADOConnection::outp("Warning: The old ODBC based DB2 driver has been renamed 'odbc_db2'. This ADOdb driver calls PHP's native db2 extension.");
72	return null;
73	}
74	// This needs to be set before the connect().
75	// Replaces the odbc_binmode() call that was in Execute()
76	ini_set('ibm_db2.binmode', $this->binmode);
77
78	if ($argDatabasename) {
79	$this->_connectionID = db2_connect($argDatabasename,$argUsername,$argPassword);
80	} else {
81	$this->_connectionID = db2_connect($argDSN,$argUsername,$argPassword);
82	}
83	if (isset($php_errormsg)) $php_errormsg = '';
84
85	// For db2_connect(), there is an optional 4th arg. If present, it must be
86	// an array of valid options. So far, we don't use them.
87
88	$this->_errorMsg = @db2_conn_errormsg();
89
90	if (isset($this->connectStmt)) $this->Execute($this->connectStmt);
91
92	return $this->_connectionID != false;
93	}
94
95	// returns true or false
96	function _pconnect($argDSN, $argUsername, $argPassword, $argDatabasename)
97	{
98	global $php_errormsg;
99
100	if (!function_exists('db2_connect')) return null;
101
102	// This needs to be set before the connect().
103	// Replaces the odbc_binmode() call that was in Execute()
104	ini_set('ibm_db2.binmode', $this->binmode);
105
106	if (isset($php_errormsg)) $php_errormsg = '';
107	$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
108
109	if ($argDatabasename) {
110	$this->_connectionID = db2_pconnect($argDatabasename,$argUsername,$argPassword);
111	} else {
112	$this->_connectionID = db2_pconnect($argDSN,$argUsername,$argPassword);
113	}
114	if (isset($php_errormsg)) $php_errormsg = '';
115
116	$this->_errorMsg = @db2_conn_errormsg();
117	if ($this->_connectionID && $this->autoRollback) @db2_rollback($this->_connectionID);
118	if (isset($this->connectStmt)) $this->Execute($this->connectStmt);
119
120	return $this->_connectionID != false;
121	}
122
123	// format and return date string in database timestamp format
124	function DBTimeStamp($ts)
125	{
126	if (empty($ts) && $ts !== 0) return 'null';
127	if (is_string($ts)) $ts = ADORecordSet::UnixTimeStamp($ts);
128	return 'TO_DATE('.adodb_date($this->fmtTimeStamp,$ts).",'YYYY-MM-DD HH24:MI:SS')";
129	}
130
131	// Format date column in sql string given an input format that understands Y M D
132	function SQLDate($fmt, $col=false)
133	{
134	// use right() and replace() ?
135	if (!$col) $col = $this->sysDate;
136
137	/* use TO_CHAR() if $fmt is TO_CHAR() allowed fmt */
138	if ($fmt== 'Y-m-d H:i:s')
139	return 'TO_CHAR('.$col.", 'YYYY-MM-DD HH24:MI:SS')";
140
141	$s = '';
142
143	$len = strlen($fmt);
144	for ($i=0; $i < $len; $i++) {
145	if ($s) $s .= $this->concat_operator;
146	$ch = $fmt[$i];
147	switch($ch) {
148	case 'Y':
149	case 'y':
150	if ($len==1) return "year($col)";
151	$s .= "char(year($col))";
152	break;
153	case 'M':
154	if ($len==1) return "monthname($col)";
155	$s .= "substr(monthname($col),1,3)";
156	break;
157	case 'm':
158	if ($len==1) return "month($col)";
159	$s .= "right(digits(month($col)),2)";
160	break;
161	case 'D':
162	case 'd':
163	if ($len==1) return "day($col)";
164	$s .= "right(digits(day($col)),2)";
165	break;
166	case 'H':
167	case 'h':
168	if ($len==1) return "hour($col)";
169	if ($col != $this->sysDate) $s .= "right(digits(hour($col)),2)";
170	else $s .= "''";
171	break;
172	case 'i':
173	case 'I':
174	if ($len==1) return "minute($col)";
175	if ($col != $this->sysDate)
176	$s .= "right(digits(minute($col)),2)";
177	else $s .= "''";
178	break;
179	case 'S':
180	case 's':
181	if ($len==1) return "second($col)";
182	if ($col != $this->sysDate)
183	$s .= "right(digits(second($col)),2)";
184	else $s .= "''";
185	break;
186	default:
187	if ($ch == '\\') {
188	$i++;
189	$ch = substr($fmt,$i,1);
190	}
191	$s .= $this->qstr($ch);
192	}
193	}
194	return $s;
195	}
196
197
198	function ServerInfo()
199	{
200
201	if (!empty($this->host) && ADODB_PHPVER >= 0x4300) {
202	$dsn = strtoupper($this->host);
203	$first = true;
204	$found = false;
205
206	if (!function_exists('db2_data_source')) return false;
207
208	while(true) {
209
210	$rez = @db2_data_source($this->_connectionID,
211	$first ? SQL_FETCH_FIRST : SQL_FETCH_NEXT);
212	$first = false;
213	if (!is_array($rez)) break;
214	if (strtoupper($rez['server']) == $dsn) {
215	$found = true;
216	break;
217	}
218	}
219	if (!$found) return ADOConnection::ServerInfo();
220	if (!isset($rez['version'])) $rez['version'] = '';
221	return $rez;
222	} else {
223	return ADOConnection::ServerInfo();
224	}
225	}
226
227
228	function CreateSequence($seqname='adodbseq',$start=1)
229	{
230	if (empty($this->_genSeqSQL)) return false;
231	$ok = $this->Execute(sprintf($this->_genSeqSQL,$seqname));
232	if (!$ok) return false;
233	return true;
234	}
235
236	function DropSequence($seqname)
237	{
238	if (empty($this->_dropSeqSQL)) return false;
239	return $this->Execute(sprintf($this->_dropSeqSQL,$seqname));
240	}
241
242	/*
243	This algorithm is not very efficient, but works even if table locking
244	is not available.
245
246	Will return false if unable to generate an ID after $MAXLOOPS attempts.
247	*/
248	function GenID($seq='adodbseq',$start=1)
249	{
250	// if you have to modify the parameter below, your database is overloaded,
251	// or you need to implement generation of id's yourself!
252	$num = $this->GetOne("VALUES NEXTVAL FOR $seq");
253	return $num;
254	}
255
256
257	function ErrorMsg()
258	{
259	if ($this->_haserrorfunctions) {
260	if ($this->_errorMsg !== false) return $this->_errorMsg;
261	if (empty($this->_connectionID)) return @db2_conn_errormsg();
262	return @db2_conn_errormsg($this->_connectionID);
263	} else return ADOConnection::ErrorMsg();
264	}
265
266	function ErrorNo()
267	{
268
269	if ($this->_haserrorfunctions) {
270	if ($this->_errorCode !== false) {
271	// bug in 4.0.6, error number can be corrupted string (should be 6 digits)
272	return (strlen($this->_errorCode)<=2) ? 0 : $this->_errorCode;
273	}
274
275	if (empty($this->_connectionID)) $e = @db2_conn_error();
276	else $e = @db2_conn_error($this->_connectionID);
277
278	// bug in 4.0.6, error number can be corrupted string (should be 6 digits)
279	// so we check and patch
280	if (strlen($e)<=2) return 0;
281	return $e;
282	} else return ADOConnection::ErrorNo();
283	}
284
285
286
287	function BeginTrans()
288	{
289	if (!$this->hasTransactions) return false;
290	if ($this->transOff) return true;
291	$this->transCnt += 1;
292	$this->_autocommit = false;
293	return db2_autocommit($this->_connectionID,false);
294	}
295
296	function CommitTrans($ok=true)
297	{
298	if ($this->transOff) return true;
299	if (!$ok) return $this->RollbackTrans();
300	if ($this->transCnt) $this->transCnt -= 1;
301	$this->_autocommit = true;
302	$ret = db2_commit($this->_connectionID);
303	db2_autocommit($this->_connectionID,true);
304	return $ret;
305	}
306
307	function RollbackTrans()
308	{
309	if ($this->transOff) return true;
310	if ($this->transCnt) $this->transCnt -= 1;
311	$this->_autocommit = true;
312	$ret = db2_rollback($this->_connectionID);
313	db2_autocommit($this->_connectionID,true);
314	return $ret;
315	}
316
317	function MetaPrimaryKeys($table)
318	{
319	global $ADODB_FETCH_MODE;
320
321	if ($this->uCaseTables) $table = strtoupper($table);
322	$schema = '';
323	$this->_findschema($table,$schema);
324
325	$savem = $ADODB_FETCH_MODE;
326	$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
327	$qid = @db2_primarykeys($this->_connectionID,'',$schema,$table);
328
329	if (!$qid) {
330	$ADODB_FETCH_MODE = $savem;
331	return false;
332	}
333	$rs = new ADORecordSet_db2($qid);
334	$ADODB_FETCH_MODE = $savem;
335
336	if (!$rs) return false;
337
338	$arr =& $rs->GetArray();
339	$rs->Close();
340	$arr2 = array();
341	for ($i=0; $i < sizeof($arr); $i++) {
342	if ($arr[$i][3]) $arr2[] = $arr[$i][3];
343	}
344	return $arr2;
345	}
346
347	function MetaForeignKeys($table, $owner = FALSE, $upper = FALSE, $asociative = FALSE )
348	{
349	global $ADODB_FETCH_MODE;
350
351	if ($this->uCaseTables) $table = strtoupper($table);
352	$schema = '';
353	$this->_findschema($table,$schema);
354
355	$savem = $ADODB_FETCH_MODE;
356	$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
357	$qid = @db2_foreign_keys($this->_connectionID,'',$schema,$table);
358	if (!$qid) {
359	$ADODB_FETCH_MODE = $savem;
360	return false;
361	}
362	$rs = new ADORecordSet_db2($qid);
363
364	$ADODB_FETCH_MODE = $savem;
365	/*
366	$rs->fields indices
367	0 PKTABLE_CAT
368	1 PKTABLE_SCHEM
369	2 PKTABLE_NAME
370	3 PKCOLUMN_NAME
371	4 FKTABLE_CAT
372	5 FKTABLE_SCHEM
373	6 FKTABLE_NAME
374	7 FKCOLUMN_NAME
375	*/
376	if (!$rs) return false;
377
378	$foreign_keys = array();
379	while (!$rs->EOF) {
380	if (strtoupper(trim($rs->fields[2])) == $table && (!$schema \|\| strtoupper($rs->fields[1]) == $schema)) {
381	if (!is_array($foreign_keys[$rs->fields[5].'.'.$rs->fields[6]]))
382	$foreign_keys[$rs->fields[5].'.'.$rs->fields[6]] = array();
383	$foreign_keys[$rs->fields[5].'.'.$rs->fields[6]][$rs->fields[7]] = $rs->fields[3];
384	}
385	$rs->MoveNext();
386	}
387
388	$rs->Close();
389	return $foreign_key;
390	}
391
392
393	function &MetaTables($ttype=false,$schema=false)
394	{
395	global $ADODB_FETCH_MODE;
396
397	$savem = $ADODB_FETCH_MODE;
398	$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
399	$qid = db2_tables($this->_connectionID);
400
401	$rs = new ADORecordSet_db2($qid);
402
403	$ADODB_FETCH_MODE = $savem;
404	if (!$rs) {
405	$false = false;
406	return $false;
407	}
408
409	$arr =& $rs->GetArray();
410
411	$rs->Close();
412	$arr2 = array();
413
414	if ($ttype) {
415	$isview = strncmp($ttype,'V',1) === 0;
416	}
417	for ($i=0; $i < sizeof($arr); $i++) {
418	if (!$arr[$i][2]) continue;
419	$type = $arr[$i][3];
420	$schemaval = ($schema) ? $arr[$i][1].'.' : '';
421	if ($ttype) {
422	if ($isview) {
423	if (strncmp($type,'V',1) === 0) $arr2[] = $schemaval.$arr[$i][2];
424	} else if (strncmp($type,'SYS',3) !== 0) $arr2[] = $schemaval.$arr[$i][2];
425	} else if (strncmp($type,'SYS',3) !== 0) $arr2[] = $schemaval.$arr[$i][2];
426	}
427	return $arr2;
428	}
429
430	/*
431	See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/db2/htm/db2datetime_data_type_changes.asp
432	/ SQL data type codes /
433	#define SQL_UNKNOWN_TYPE 0
434	#define SQL_CHAR 1
435	#define SQL_NUMERIC 2
436	#define SQL_DECIMAL 3
437	#define SQL_INTEGER 4
438	#define SQL_SMALLINT 5
439	#define SQL_FLOAT 6
440	#define SQL_REAL 7
441	#define SQL_DOUBLE 8
442	#if (DB2VER >= 0x0300)
443	#define SQL_DATETIME 9
444	#endif
445	#define SQL_VARCHAR 12
446
447
448	/ One-parameter shortcuts for date/time data types /
449	#if (DB2VER >= 0x0300)
450	#define SQL_TYPE_DATE 91
451	#define SQL_TYPE_TIME 92
452	#define SQL_TYPE_TIMESTAMP 93
453
454	#define SQL_UNICODE (-95)
455	#define SQL_UNICODE_VARCHAR (-96)
456	#define SQL_UNICODE_LONGVARCHAR (-97)
457	*/
458	function DB2Types($t)
459	{
460	switch ((integer)$t) {
461	case 1:
462	case 12:
463	case 0:
464	case -95:
465	case -96:
466	return 'C';
467	case -97:
468	case -1: //text
469	return 'X';
470	case -4: //image
471	return 'B';
472
473	case 9:
474	case 91:
475	return 'D';
476
477	case 10:
478	case 11:
479	case 92:
480	case 93:
481	return 'T';
482
483	case 4:
484	case 5:
485	case -6:
486	return 'I';
487
488	case -11: // uniqidentifier
489	return 'R';
490	case -7: //bit
491	return 'L';
492
493	default:
494	return 'N';
495	}
496	}
497
498	function &MetaColumns($table)
499	{
500	global $ADODB_FETCH_MODE;
501
502	$false = false;
503	if ($this->uCaseTables) $table = strtoupper($table);
504	$schema = '';
505	$this->_findschema($table,$schema);
506
507	$savem = $ADODB_FETCH_MODE;
508	$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
509
510	$colname = "%";
511	$qid = db2_columns($this->_connectionID, "", $schema, $table, $colname);
512	if (empty($qid)) return $false;
513
514	$rs =& new ADORecordSet_db2($qid);
515	$ADODB_FETCH_MODE = $savem;
516
517	if (!$rs) return $false;
518	$rs->_fetch();
519
520	$retarr = array();
521
522	/*
523	$rs->fields indices
524	0 TABLE_QUALIFIER
525	1 TABLE_SCHEM
526	2 TABLE_NAME
527	3 COLUMN_NAME
528	4 DATA_TYPE
529	5 TYPE_NAME
530	6 PRECISION
531	7 LENGTH
532	8 SCALE
533	9 RADIX
534	10 NULLABLE
535	11 REMARKS
536	*/
537	while (!$rs->EOF) {
538	if (strtoupper(trim($rs->fields[2])) == $table && (!$schema \|\| strtoupper($rs->fields[1]) == $schema)) {
539	$fld = new ADOFieldObject();
540	$fld->name = $rs->fields[3];
541	$fld->type = $this->DB2Types($rs->fields[4]);
542
543	// ref: http://msdn.microsoft.com/library/default.asp?url=/archive/en-us/dnaraccgen/html/msdn_odk.asp
544	// access uses precision to store length for char/varchar
545	if ($fld->type == 'C' or $fld->type == 'X') {
546	if ($rs->fields[4] <= -95) // UNICODE
547	$fld->max_length = $rs->fields[7]/2;
548	else
549	$fld->max_length = $rs->fields[7];
550	} else
551	$fld->max_length = $rs->fields[7];
552	$fld->not_null = !empty($rs->fields[10]);
553	$fld->scale = $rs->fields[8];
554	$fld->primary_key = false;
555	$retarr[strtoupper($fld->name)] = $fld;
556	} else if (sizeof($retarr)>0)
557	break;
558	$rs->MoveNext();
559	}
560	$rs->Close();
561	if (empty($retarr)) $retarr = false;
562
563	$qid = db2_primary_keys($this->_connectionID, "", $schema, $table);
564	if (empty($qid)) return $false;
565
566	$rs =& new ADORecordSet_db2($qid);
567	$ADODB_FETCH_MODE = $savem;
568
569	if (!$rs) return $retarr;
570	$rs->_fetch();
571
572	/*
573	$rs->fields indices
574	0 TABLE_CAT
575	1 TABLE_SCHEM
576	2 TABLE_NAME
577	3 COLUMN_NAME
578	4 KEY_SEQ
579	5 PK_NAME
580	*/
581	while (!$rs->EOF) {
582	if (strtoupper(trim($rs->fields[2])) == $table && (!$schema \|\| strtoupper($rs->fields[1]) == $schema)) {
583	$retarr[strtoupper($rs->fields[3])]->primary_key = true;
584	} else if (sizeof($retarr)>0)
585	break;
586	$rs->MoveNext();
587	}
588	$rs->Close();
589
590	if (empty($retarr)) $retarr = false;
591	return $retarr;
592	}
593
594	function Prepare($sql)
595	{
596	if (! $this->_bindInputArray) return $sql; // no binding
597	$stmt = db2_prepare($this->_connectionID,$sql);
598	if (!$stmt) {
599	// we don't know whether db2 driver is parsing prepared stmts, so just return sql
600	return $sql;
601	}
602	return array($sql,$stmt,false);
603	}
604
605	/* returns queryID or false */
606	function _query($sql,$inputarr=false)
607	{
608	GLOBAL $php_errormsg;
609	if (isset($php_errormsg)) $php_errormsg = '';
610	$this->_error = '';
611
612	if ($inputarr) {
613	if (is_array($sql)) {
614	$stmtid = $sql[1];
615	} else {
616	$stmtid = db2_prepare($this->_connectionID,$sql);
617
618	if ($stmtid == false) {
619	$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
620	return false;
621	}
622	}
623
624	if (! db2_execute($stmtid,$inputarr)) {
625	if ($this->_haserrorfunctions) {
626	$this->_errorMsg = db2_stmt_errormsg();
627	$this->_errorCode = db2_stmt_error();
628	}
629	return false;
630	}
631
632	} else if (is_array($sql)) {
633	$stmtid = $sql[1];
634	if (!db2_execute($stmtid)) {
635	if ($this->_haserrorfunctions) {
636	$this->_errorMsg = db2_stmt_errormsg();
637	$this->_errorCode = db2_stmt_error();
638	}
639	return false;
640	}
641	} else
642	$stmtid = @db2_exec($this->_connectionID,$sql);
643
644	$this->_lastAffectedRows = 0;
645	if ($stmtid) {
646	if (@db2_num_fields($stmtid) == 0) {
647	$this->_lastAffectedRows = db2_num_rows($stmtid);
648	$stmtid = true;
649	} else {
650	$this->_lastAffectedRows = 0;
651	}
652
653	if ($this->_haserrorfunctions) {
654	$this->_errorMsg = '';
655	$this->_errorCode = 0;
656	} else
657	$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
658	} else {
659	if ($this->_haserrorfunctions) {
660	$this->_errorMsg = db2_stmt_errormsg();
661	$this->_errorCode = db2_stmt_error();
662	} else
663	$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
664
665	}
666	return $stmtid;
667	}
668
669	/*
670	Insert a null into the blob field of the table first.
671	Then use UpdateBlob to store the blob.
672
673	Usage:
674
675	$conn->Execute('INSERT INTO blobtable (id, blobcol) VALUES (1, null)');
676	$conn->UpdateBlob('blobtable','blobcol',$blob,'id=1');
677	*/
678	function UpdateBlob($table,$column,$val,$where,$blobtype='BLOB')
679	{
680	return $this->Execute("UPDATE $table SET $column=? WHERE $where",array($val)) != false;
681	}
682
683	// returns true or false
684	function _close()
685	{
686	$ret = @db2_close($this->_connectionID);
687	$this->_connectionID = false;
688	return $ret;
689	}
690
691	function _affectedrows()
692	{
693	return $this->_lastAffectedRows;
694	}
695
696	}
697
698	/*--------------------------------------------------------------------------------------
699	Class Name: Recordset
700	--------------------------------------------------------------------------------------*/
701
702	class ADORecordSet_db2 extends ADORecordSet {
703
704	var $bind = false;
705	var $databaseType = "db2";
706	var $dataProvider = "db2";
707	var $useFetchArray;
708
709	function ADORecordSet_db2($id,$mode=false)
710	{
711	if ($mode === false) {
712	global $ADODB_FETCH_MODE;
713	$mode = $ADODB_FETCH_MODE;
714	}
715	$this->fetchMode = $mode;
716
717	$this->_queryID = $id;
718	}
719
720
721	// returns the field object
722	function &FetchField($offset = -1)
723	{
724	$o= new ADOFieldObject();
725	$o->name = @db2_field_name($this->_queryID,$offset);
726	$o->type = @db2_field_type($this->_queryID,$offset);
727	$o->max_length = db2_field_width($this->_queryID,$offset);
728	if (ADODB_ASSOC_CASE == 0) $o->name = strtolower($o->name);
729	else if (ADODB_ASSOC_CASE == 1) $o->name = strtoupper($o->name);
730	return $o;
731	}
732
733	/* Use associative array to get fields array */
734	function Fields($colname)
735	{
736	if ($this->fetchMode & ADODB_FETCH_ASSOC) return $this->fields[$colname];
737	if (!$this->bind) {
738	$this->bind = array();
739	for ($i=0; $i < $this->_numOfFields; $i++) {
740	$o = $this->FetchField($i);
741	$this->bind[strtoupper($o->name)] = $i;
742	}
743	}
744
745	return $this->fields[$this->bind[strtoupper($colname)]];
746	}
747
748
749	function _initrs()
750	{
751	global $ADODB_COUNTRECS;
752	$this->_numOfRows = ($ADODB_COUNTRECS) ? @db2_num_rows($this->_queryID) : -1;
753	$this->_numOfFields = @db2_num_fields($this->_queryID);
754	// some silly drivers such as db2 as/400 and intersystems cache return _numOfRows = 0
755	if ($this->_numOfRows == 0) $this->_numOfRows = -1;
756	}
757
758	function _seek($row)
759	{
760	return false;
761	}
762
763	// speed up SelectLimit() by switching to ADODB_FETCH_NUM as ADODB_FETCH_ASSOC is emulated
764	function &GetArrayLimit($nrows,$offset=-1)
765	{
766	if ($offset <= 0) {
767	$rs =& $this->GetArray($nrows);
768	return $rs;
769	}
770	$savem = $this->fetchMode;
771	$this->fetchMode = ADODB_FETCH_NUM;
772	$this->Move($offset);
773	$this->fetchMode = $savem;
774
775	if ($this->fetchMode & ADODB_FETCH_ASSOC) {
776	$this->fields =& $this->GetRowAssoc(ADODB_ASSOC_CASE);
777	}
778
779	$results = array();
780	$cnt = 0;
781	while (!$this->EOF && $nrows != $cnt) {
782	$results[$cnt++] = $this->fields;
783	$this->MoveNext();
784	}
785
786	return $results;
787	}
788
789
790	function MoveNext()
791	{
792	if ($this->_numOfRows != 0 && !$this->EOF) {
793	$this->_currentRow++;
794
795	$this->fields = @db2_fetch_array($this->_queryID);
796	if ($this->fields) {
797	if ($this->fetchMode & ADODB_FETCH_ASSOC) {
798	$this->fields =& $this->GetRowAssoc(ADODB_ASSOC_CASE);
799	}
800	return true;
801	}
802	}
803	$this->fields = false;
804	$this->EOF = true;
805	return false;
806	}
807
808	function _fetch()
809	{
810
811	$this->fields = db2_fetch_array($this->_queryID);
812	if ($this->fields) {
813	if ($this->fetchMode & ADODB_FETCH_ASSOC) {
814	$this->fields =& $this->GetRowAssoc(ADODB_ASSOC_CASE);
815	}
816	return true;
817	}
818	$this->fields = false;
819	return false;
820	}
821
822	function _close()
823	{
824	return @db2_free_result($this->_queryID);
825	}
826
827	}
828	?>

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source: branches/comu-ver2/data/module/adodb/drivers/adodb-db2.inc.php @ 18701

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