File: adodb-pdo_pgsql.inc.php

package info (click to toggle)
libphp-adodb 5.21.4-1%2Bdeb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm-proposed-updates
  • size: 2,276 kB
  • sloc: php: 35,839; xml: 52; sql: 32; makefile: 5
file content (300 lines) | stat: -rw-r--r-- 10,108 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
<?php
/**
 * PDO PostgreSQL (pgsql) driver
 *
 * This file is part of ADOdb, a Database Abstraction Layer library for PHP.
 *
 * @package ADOdb
 * @link https://adodb.org Project's web site and documentation
 * @link https://github.com/ADOdb/ADOdb Source code and issue tracker
 *
 * The ADOdb Library is dual-licensed, released under both the BSD 3-Clause
 * and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option,
 * any later version. This means you can use it in proprietary products.
 * See the LICENSE.md file distributed with this source code for details.
 * @license BSD-3-Clause
 * @license LGPL-2.1-or-later
 *
 * @copyright 2000-2013 John Lim
 * @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community
 */

class ADODB_pdo_pgsql extends ADODB_pdo {
	var $metaDatabasesSQL = "select datname from pg_database where datname not in ('template0','template1') order by 1";
    var $metaTablesSQL = "select tablename,'T' from pg_tables where tablename not like 'pg\_%'
	and tablename not in ('sql_features', 'sql_implementation_info', 'sql_languages',
	 'sql_packages', 'sql_sizing', 'sql_sizing_profiles')
	union
        select viewname,'V' from pg_views where viewname not like 'pg\_%'";
	//"select tablename from pg_tables where tablename not like 'pg_%' order by 1";
	var $isoDates = true; // accepts dates in ISO format
	var $sysDate = "CURRENT_DATE";
	var $sysTimeStamp = "CURRENT_TIMESTAMP";
	var $blobEncodeType = 'C';
	var $metaColumnsSQL = "SELECT a.attname,t.typname,a.attlen,a.atttypmod,a.attnotnull,a.atthasdef,a.attnum
		FROM pg_class c, pg_attribute a,pg_type t
		WHERE relkind in ('r','v') AND (c.relname='%s' or c.relname = lower('%s')) and a.attname not like '....%%'
AND a.attnum > 0 AND a.atttypid = t.oid AND a.attrelid = c.oid ORDER BY a.attnum";

	// used when schema defined
	var $metaColumnsSQL1 = "SELECT a.attname, t.typname, a.attlen, a.atttypmod, a.attnotnull, a.atthasdef, a.attnum
FROM pg_class c, pg_attribute a, pg_type t, pg_namespace n
WHERE relkind in ('r','v') AND (c.relname='%s' or c.relname = lower('%s'))
 and c.relnamespace=n.oid and n.nspname='%s'
	and a.attname not like '....%%' AND a.attnum > 0
	AND a.atttypid = t.oid AND a.attrelid = c.oid ORDER BY a.attnum";

	// get primary key etc -- from Freek Dijkstra
	var $metaKeySQL = "SELECT ic.relname AS index_name, a.attname AS column_name,i.indisunique AS unique_key, i.indisprimary AS primary_key
	FROM pg_class bc, pg_class ic, pg_index i, pg_attribute a WHERE bc.oid = i.indrelid AND ic.oid = i.indexrelid AND (i.indkey[0] = a.attnum OR i.indkey[1] = a.attnum OR i.indkey[2] = a.attnum OR i.indkey[3] = a.attnum OR i.indkey[4] = a.attnum OR i.indkey[5] = a.attnum OR i.indkey[6] = a.attnum OR i.indkey[7] = a.attnum) AND a.attrelid = bc.oid AND bc.relname = '%s'";

	var $hasAffectedRows = true;
	var $hasLimit = false;	// set to true for pgsql 7 only. support pgsql/mysql SELECT * FROM TABLE LIMIT 10
	// below suggested by Freek Dijkstra
	var $true = 't';		// string that represents TRUE for a database
	var $false = 'f';		// string that represents FALSE for a database
	var $fmtDate = "'Y-m-d'";	// used by DBDate() as the default date format used by the database
	var $fmtTimeStamp = "'Y-m-d G:i:s'"; // used by DBTimeStamp as the default timestamp fmt.
	var $hasMoveFirst = true;
	var $hasGenID = true;
	var $_genIDSQL = "SELECT NEXTVAL('%s')";
	var $_genSeqSQL = "CREATE SEQUENCE %s START %s";
	var $_dropSeqSQL = "DROP SEQUENCE %s";
	var $metaDefaultsSQL = "SELECT d.adnum as num, d.adsrc as def from pg_attrdef d, pg_class c where d.adrelid=c.oid and c.relname='%s' order by d.adnum";
	var $random = 'random()';		/// random function
	var $concat_operator='||';

	function _init($parentDriver)
	{

		$parentDriver->hasTransactions = false; ## <<< BUG IN PDO pgsql driver
		$parentDriver->hasInsertID = true;
		$parentDriver->_nestedSQL = true;
	}

	function ServerInfo()
	{
		$arr['description'] = ADOConnection::GetOne("select version()");
		$arr['version'] = ADOConnection::_findvers($arr['description']);
		return $arr;
	}

	function SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs2cache=0)
	{
		$nrows = (int) $nrows;
		$offset = (int) $offset;
		$offsetStr = ($offset >= 0) ? " OFFSET $offset" : '';
		$limitStr  = ($nrows >= 0)  ? " LIMIT $nrows" : '';
		if ($secs2cache)
			$rs = $this->CacheExecute($secs2cache,$sql."$limitStr$offsetStr",$inputarr);
		else
			$rs = $this->Execute($sql."$limitStr$offsetStr",$inputarr);

		return $rs;
	}

	function MetaTables($ttype=false,$showSchema=false,$mask=false)
	{
		$info = $this->ServerInfo();
		if ($info['version'] >= 7.3) {
	    	$this->metaTablesSQL = "select tablename,'T' from pg_tables where tablename not like 'pg\_%'
			  and schemaname  not in ( 'pg_catalog','information_schema')
	union
        select viewname,'V' from pg_views where viewname not like 'pg\_%'  and schemaname  not in ( 'pg_catalog','information_schema') ";
		}
		if ($mask) {
			$save = $this->metaTablesSQL;
			$mask = $this->qstr(strtolower($mask));
			if ($info['version']>=7.3)
				$this->metaTablesSQL = "
select tablename,'T' from pg_tables where tablename like $mask and schemaname not in ( 'pg_catalog','information_schema')
 union
select viewname,'V' from pg_views where viewname like $mask and schemaname  not in ( 'pg_catalog','information_schema')  ";
			else
				$this->metaTablesSQL = "
select tablename,'T' from pg_tables where tablename like $mask
 union
select viewname,'V' from pg_views where viewname like $mask";
		}
		$ret = ADOConnection::MetaTables($ttype,$showSchema);

		if ($mask) {
			$this->metaTablesSQL = $save;
		}
		return $ret;
	}

	function MetaColumns($table,$normalize=true)
	{
	global $ADODB_FETCH_MODE;

		$schema = false;
		$this->_findschema($table,$schema);

		if ($normalize) $table = strtolower($table);

		$save = $ADODB_FETCH_MODE;
		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
		if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);

		if ($schema) $rs = $this->Execute(sprintf($this->metaColumnsSQL1,$table,$table,$schema));
		else $rs = $this->Execute(sprintf($this->metaColumnsSQL,$table,$table));
		if (isset($savem)) $this->SetFetchMode($savem);
		$ADODB_FETCH_MODE = $save;

		if ($rs === false) {
			$false = false;
			return $false;
		}
		if (!empty($this->metaKeySQL)) {
			// If we want the primary keys, we have to issue a separate query
			// Of course, a modified version of the metaColumnsSQL query using a
			// LEFT JOIN would have been much more elegant, but postgres does
			// not support OUTER JOINS. So here is the clumsy way.

			$ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;

			$rskey = $this->Execute(sprintf($this->metaKeySQL,($table)));
			// fetch all result in once for performance.
			$keys = $rskey->GetArray();
			if (isset($savem)) $this->SetFetchMode($savem);
			$ADODB_FETCH_MODE = $save;

			$rskey->Close();
			unset($rskey);
		}

		$rsdefa = array();
		if (!empty($this->metaDefaultsSQL)) {
			$ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;
			$sql = sprintf($this->metaDefaultsSQL, ($table));
			$rsdef = $this->Execute($sql);
			if (isset($savem)) $this->SetFetchMode($savem);
			$ADODB_FETCH_MODE = $save;

			if ($rsdef) {
				while (!$rsdef->EOF) {
					$num = $rsdef->fields['num'];
					$s = $rsdef->fields['def'];
					if (strpos($s,'::')===false && substr($s, 0, 1) == "'") { /* quoted strings hack... for now... fixme */
						$s = substr($s, 1);
						$s = substr($s, 0, strlen($s) - 1);
					}

					$rsdefa[$num] = $s;
					$rsdef->MoveNext();
				}
			} else {
				ADOConnection::outp( "==> SQL => " . $sql);
			}
			unset($rsdef);
		}

		$retarr = array();
		while (!$rs->EOF) {
			$fld = new ADOFieldObject();
			$fld->name = $rs->fields[0];
			$fld->type = $rs->fields[1];
			$fld->max_length = $rs->fields[2];
			if ($fld->max_length <= 0) $fld->max_length = $rs->fields[3]-4;
			if ($fld->max_length <= 0) $fld->max_length = -1;
			if ($fld->type == 'numeric') {
				$fld->scale = $fld->max_length & 0xFFFF;
				$fld->max_length >>= 16;
			}
			// dannym
			// 5 hasdefault; 6 num-of-column
			$fld->has_default = ($rs->fields[5] == 't');
			if ($fld->has_default) {
				$fld->default_value = $rsdefa[$rs->fields[6]];
			}

			//Freek
			if ($rs->fields[4] == $this->true) {
				$fld->not_null = true;
			}

			// Freek
			if (is_array($keys)) {
				foreach($keys as $key) {
					if ($fld->name == $key['column_name'] AND $key['primary_key'] == $this->true)
						$fld->primary_key = true;
					if ($fld->name == $key['column_name'] AND $key['unique_key'] == $this->true)
						$fld->unique = true; // What name is more compatible?
				}
			}

			if ($ADODB_FETCH_MODE == ADODB_FETCH_NUM) $retarr[] = $fld;
			else $retarr[($normalize) ? strtoupper($fld->name) : $fld->name] = $fld;

			$rs->MoveNext();
		}
		$rs->Close();
		if (empty($retarr)) {
			$false = false;
			return $false;
		} else return $retarr;

	}

	function BeginTrans()
	{
		if (!$this->hasTransactions) {
			return false;
		}
		if ($this->transOff) {
			return true;
		}
		$this->transCnt += 1;

		return $this->_connectionID->beginTransaction();
	}

	function CommitTrans($ok = true)
	{
		if (!$this->hasTransactions) {
			return false;
		}
		if ($this->transOff) {
			return true;
		}
		if (!$ok) {
			return $this->RollbackTrans();
		}
		if ($this->transCnt) {
			$this->transCnt -= 1;
		}
		$this->_autocommit = true;

		$ret = $this->_connectionID->commit();
		return $ret;
	}

	function RollbackTrans()
	{
		if (!$this->hasTransactions) {
			return false;
		}
		if ($this->transOff) {
			return true;
		}
		if ($this->transCnt) {
			$this->transCnt -= 1;
		}
		$this->_autocommit = true;

		$ret = $this->_connectionID->rollback();
		return $ret;
	}

	function SetTransactionMode( $transaction_mode )
	{
		$this->_transmode  = $transaction_mode;
		if (empty($transaction_mode)) {
			$this->_connectionID->query('SET TRANSACTION ISOLATION LEVEL READ COMMITTED');
			return;
		}
		if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode;
		$this->_connectionID->query("SET TRANSACTION ".$transaction_mode);
	}
}