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<?php
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// +----------------------------------------------------------------------+
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// | PHP versions 4 and 5                                                 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
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// | Stig. S. Bakken, Lukas Smith                                         |
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// | All rights reserved.                                                 |
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// +----------------------------------------------------------------------+
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// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
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// | API as well as database abstraction for PHP applications.            |
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// | This LICENSE is in the BSD license style.                            |
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// |                                                                      |
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// | Redistribution and use in source and binary forms, with or without   |
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// | modification, are permitted provided that the following conditions   |
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// | are met:                                                             |
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// |                                                                      |
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// | Redistributions of source code must retain the above copyright       |
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// | notice, this list of conditions and the following disclaimer.        |
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// |                                                                      |
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// | Redistributions in binary form must reproduce the above copyright    |
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// | notice, this list of conditions and the following disclaimer in the  |
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// | documentation and/or other materials provided with the distribution. |
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// |                                                                      |
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// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
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// | Lukas Smith nor the names of his contributors may be used to endorse |
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// | or promote products derived from this software without specific prior|
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// | written permission.                                                  |
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// |                                                                      |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
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// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
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// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
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// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
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// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
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// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
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// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
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// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
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// | POSSIBILITY OF SUCH DAMAGE.                                          |
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// +----------------------------------------------------------------------+
42
// | Author: Lukas Smith <smith@pooteeweet.org>                           |
43
// +----------------------------------------------------------------------+
44
//
45
// $Id: mysql.php,v 1.94 2007/03/04 22:50:16 quipo Exp $
46
//
47
 
48
require_once 'MDB2/Driver/Manager/Common.php';
49
 
50
/**
51
 * MDB2 MySQL driver for the management modules
52
 *
53
 * @package MDB2
54
 * @category Database
55
 * @author  Lukas Smith <smith@pooteeweet.org>
56
 */
57
class MDB2_Driver_Manager_mysql extends MDB2_Driver_Manager_Common
58
{
59
 
60
    // }}}
61
    // {{{ createDatabase()
62
 
63
    /**
64
     * create a new database
65
     *
66
     * @param string $name name of the database that should be created
67
     * @return mixed MDB2_OK on success, a MDB2 error on failure
68
     * @access public
69
     */
70
    function createDatabase($name)
71
    {
72
        $db =& $this->getDBInstance();
73
        if (PEAR::isError($db)) {
74
            return $db;
75
        }
76
 
77
        $name = $db->quoteIdentifier($name, true);
78
        $query = "CREATE DATABASE $name";
79
        $result = $db->exec($query);
80
        if (PEAR::isError($result)) {
81
            return $result;
82
        }
83
        return MDB2_OK;
84
    }
85
 
86
    // }}}
87
    // {{{ dropDatabase()
88
 
89
    /**
90
     * drop an existing database
91
     *
92
     * @param string $name name of the database that should be dropped
93
     * @return mixed MDB2_OK on success, a MDB2 error on failure
94
     * @access public
95
     */
96
    function dropDatabase($name)
97
    {
98
        $db =& $this->getDBInstance();
99
        if (PEAR::isError($db)) {
100
            return $db;
101
        }
102
 
103
        $name = $db->quoteIdentifier($name, true);
104
        $query = "DROP DATABASE $name";
105
        $result = $db->exec($query);
106
        if (PEAR::isError($result)) {
107
            return $result;
108
        }
109
        return MDB2_OK;
110
    }
111
 
112
    // }}}
113
    // {{{ createTable()
114
 
115
    /**
116
     * create a new table
117
     *
118
     * @param string $name   Name of the database that should be created
119
     * @param array $fields  Associative array that contains the definition of each field of the new table
120
     *                       The indexes of the array entries are the names of the fields of the table an
121
     *                       the array entry values are associative arrays like those that are meant to be
122
     *                       passed with the field definitions to get[Type]Declaration() functions.
123
     *                          array(
124
     *                              'id' => array(
125
     *                                  'type' => 'integer',
126
     *                                  'unsigned' => 1
127
     *                                  'notnull' => 1
128
     *                                  'default' => 0
129
     *                              ),
130
     *                              'name' => array(
131
     *                                  'type' => 'text',
132
     *                                  'length' => 12
133
     *                              ),
134
     *                              'password' => array(
135
     *                                  'type' => 'text',
136
     *                                  'length' => 12
137
     *                              )
138
     *                          );
139
     * @param array $options  An associative array of table options:
140
     *                          array(
141
     *                              'comment' => 'Foo',
142
     *                              'charset' => 'utf8',
143
     *                              'collate' => 'utf8_unicode_ci',
144
     *                              'type'    => 'innodb',
145
     *                          );
146
     *
147
     * @return mixed MDB2_OK on success, a MDB2 error on failure
148
     * @access public
149
     */
150
    function createTable($name, $fields, $options = array())
151
    {
152
        $db =& $this->getDBInstance();
153
        if (PEAR::isError($db)) {
154
            return $db;
155
        }
156
 
157
        $query = $this->_getCreateTableQuery($name, $fields, $options);
158
        if (PEAR::isError($query)) {
159
            return $query;
160
        }
161
 
162
        $options_strings = array();
163
 
164
        if (!empty($options['comment'])) {
165
            $options_strings['comment'] = 'COMMENT = '.$db->quote($options['comment'], 'text');
166
        }
167
 
168
        if (!empty($options['charset'])) {
169
            $options_strings['charset'] = 'DEFAULT CHARACTER SET '.$options['charset'];
170
            if (!empty($options['collate'])) {
171
                $options_strings['charset'].= ' COLLATE '.$options['collate'];
172
            }
173
        }
174
 
175
        $type = false;
176
        if (!empty($options['type'])) {
177
            $type = $options['type'];
178
        } elseif ($db->options['default_table_type']) {
179
            $type = $db->options['default_table_type'];
180
        }
181
        if ($type) {
182
            $options_strings[] = "ENGINE = $type";
183
        }
184
 
185
        if (!empty($options_strings)) {
186
            $query .= ' '.implode(' ', $options_strings);
187
        }
188
        return $db->exec($query);
189
    }
190
 
191
    // }}}
192
    // {{{ alterTable()
193
 
194
    /**
195
     * alter an existing table
196
     *
197
     * @param string $name         name of the table that is intended to be changed.
198
     * @param array $changes     associative array that contains the details of each type
199
     *                             of change that is intended to be performed. The types of
200
     *                             changes that are currently supported are defined as follows:
201
     *
202
     *                             name
203
     *
204
     *                                New name for the table.
205
     *
206
     *                            add
207
     *
208
     *                                Associative array with the names of fields to be added as
209
     *                                 indexes of the array. The value of each entry of the array
210
     *                                 should be set to another associative array with the properties
211
     *                                 of the fields to be added. The properties of the fields should
212
     *                                 be the same as defined by the MDB2 parser.
213
     *
214
     *
215
     *                            remove
216
     *
217
     *                                Associative array with the names of fields to be removed as indexes
218
     *                                 of the array. Currently the values assigned to each entry are ignored.
219
     *                                 An empty array should be used for future compatibility.
220
     *
221
     *                            rename
222
     *
223
     *                                Associative array with the names of fields to be renamed as indexes
224
     *                                 of the array. The value of each entry of the array should be set to
225
     *                                 another associative array with the entry named name with the new
226
     *                                 field name and the entry named Declaration that is expected to contain
227
     *                                 the portion of the field declaration already in DBMS specific SQL code
228
     *                                 as it is used in the CREATE TABLE statement.
229
     *
230
     *                            change
231
     *
232
     *                                Associative array with the names of the fields to be changed as indexes
233
     *                                 of the array. Keep in mind that if it is intended to change either the
234
     *                                 name of a field and any other properties, the change array entries
235
     *                                 should have the new names of the fields as array indexes.
236
     *
237
     *                                The value of each entry of the array should be set to another associative
238
     *                                 array with the properties of the fields to that are meant to be changed as
239
     *                                 array entries. These entries should be assigned to the new values of the
240
     *                                 respective properties. The properties of the fields should be the same
241
     *                                 as defined by the MDB2 parser.
242
     *
243
     *                            Example
244
     *                                array(
245
     *                                    'name' => 'userlist',
246
     *                                    'add' => array(
247
     *                                        'quota' => array(
248
     *                                            'type' => 'integer',
249
     *                                            'unsigned' => 1
250
     *                                        )
251
     *                                    ),
252
     *                                    'remove' => array(
253
     *                                        'file_limit' => array(),
254
     *                                        'time_limit' => array()
255
     *                                    ),
256
     *                                    'change' => array(
257
     *                                        'name' => array(
258
     *                                            'length' => '20',
259
     *                                            'definition' => array(
260
     *                                                'type' => 'text',
261
     *                                                'length' => 20,
262
     *                                            ),
263
     *                                        )
264
     *                                    ),
265
     *                                    'rename' => array(
266
     *                                        'sex' => array(
267
     *                                            'name' => 'gender',
268
     *                                            'definition' => array(
269
     *                                                'type' => 'text',
270
     *                                                'length' => 1,
271
     *                                                'default' => 'M',
272
     *                                            ),
273
     *                                        )
274
     *                                    )
275
     *                                )
276
     *
277
     * @param boolean $check     indicates whether the function should just check if the DBMS driver
278
     *                             can perform the requested table alterations if the value is true or
279
     *                             actually perform them otherwise.
280
     * @access public
281
     *
282
      * @return mixed MDB2_OK on success, a MDB2 error on failure
283
     */
284
    function alterTable($name, $changes, $check)
285
    {
286
        $db =& $this->getDBInstance();
287
        if (PEAR::isError($db)) {
288
            return $db;
289
        }
290
 
291
        foreach ($changes as $change_name => $change) {
292
            switch ($change_name) {
293
            case 'add':
294
            case 'remove':
295
            case 'change':
296
            case 'rename':
297
            case 'name':
298
                break;
299
            default:
300
                return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
301
                    'change type "'.$change_name.'" not yet supported', __FUNCTION__);
302
            }
303
        }
304
 
305
        if ($check) {
306
            return MDB2_OK;
307
        }
308
 
309
        $query = '';
310
        if (!empty($changes['name'])) {
311
            $change_name = $db->quoteIdentifier($changes['name'], true);
312
            $query .= 'RENAME TO ' . $change_name;
313
        }
314
 
315
        if (!empty($changes['add']) && is_array($changes['add'])) {
316
            foreach ($changes['add'] as $field_name => $field) {
317
                if ($query) {
318
                    $query.= ', ';
319
                }
320
                $query.= 'ADD ' . $db->getDeclaration($field['type'], $field_name, $field);
321
            }
322
        }
323
 
324
        if (!empty($changes['remove']) && is_array($changes['remove'])) {
325
            foreach ($changes['remove'] as $field_name => $field) {
326
                if ($query) {
327
                    $query.= ', ';
328
                }
329
                $field_name = $db->quoteIdentifier($field_name, true);
330
                $query.= 'DROP ' . $field_name;
331
            }
332
        }
333
 
334
        $rename = array();
335
        if (!empty($changes['rename']) && is_array($changes['rename'])) {
336
            foreach ($changes['rename'] as $field_name => $field) {
337
                $rename[$field['name']] = $field_name;
338
            }
339
        }
340
 
341
        if (!empty($changes['change']) && is_array($changes['change'])) {
342
            foreach ($changes['change'] as $field_name => $field) {
343
                if ($query) {
344
                    $query.= ', ';
345
                }
346
                if (isset($rename[$field_name])) {
347
                    $old_field_name = $rename[$field_name];
348
                    unset($rename[$field_name]);
349
                } else {
350
                    $old_field_name = $field_name;
351
                }
352
                $old_field_name = $db->quoteIdentifier($old_field_name, true);
353
                $query.= "CHANGE $old_field_name " . $db->getDeclaration($field['definition']['type'], $field_name, $field['definition']);
354
            }
355
        }
356
 
357
        if (!empty($rename) && is_array($rename)) {
358
            foreach ($rename as $rename_name => $renamed_field) {
359
                if ($query) {
360
                    $query.= ', ';
361
                }
362
                $field = $changes['rename'][$renamed_field];
363
                $renamed_field = $db->quoteIdentifier($renamed_field, true);
364
                $query.= 'CHANGE ' . $renamed_field . ' ' . $db->getDeclaration($field['definition']['type'], $field['name'], $field['definition']);
365
            }
366
        }
367
 
368
        if (!$query) {
369
            return MDB2_OK;
370
        }
371
 
372
        $name = $db->quoteIdentifier($name, true);
373
        return $db->exec("ALTER TABLE $name $query");
374
    }
375
 
376
    // }}}
377
    // {{{ listDatabases()
378
 
379
    /**
380
     * list all databases
381
     *
382
     * @return mixed array of database names on success, a MDB2 error on failure
383
     * @access public
384
     */
385
    function listDatabases()
386
    {
387
        $db =& $this->getDBInstance();
388
        if (PEAR::isError($db)) {
389
            return $db;
390
        }
391
 
392
        $result = $db->queryCol('SHOW DATABASES');
393
        if (PEAR::isError($result)) {
394
            return $result;
395
        }
396
        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
397
            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
398
        }
399
        return $result;
400
    }
401
 
402
    // }}}
403
    // {{{ listUsers()
404
 
405
    /**
406
     * list all users
407
     *
408
     * @return mixed array of user names on success, a MDB2 error on failure
409
     * @access public
410
     */
411
    function listUsers()
412
    {
413
        $db =& $this->getDBInstance();
414
        if (PEAR::isError($db)) {
415
            return $db;
416
        }
417
 
418
        return $db->queryCol('SELECT DISTINCT USER FROM mysql.USER');
419
    }
420
 
421
    // }}}
422
    // {{{ listFunctions()
423
 
424
    /**
425
     * list all functions in the current database
426
     *
427
     * @return mixed array of function names on success, a MDB2 error on failure
428
     * @access public
429
     */
430
    function listFunctions()
431
    {
432
        $db =& $this->getDBInstance();
433
        if (PEAR::isError($db)) {
434
            return $db;
435
        }
436
 
437
        $query = "SELECT name FROM mysql.proc";
438
        /*
439
        SELECT ROUTINE_NAME
440
          FROM INFORMATION_SCHEMA.ROUTINES
441
         WHERE ROUTINE_TYPE = 'FUNCTION'
442
        */
443
        $result = $db->queryCol($query);
444
        if (PEAR::isError($result)) {
445
            return $result;
446
        }
447
        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
448
            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
449
        }
450
        return $result;
451
    }
452
 
453
    // }}}
454
    // {{{ listTableTriggers()
455
 
456
    /**
457
     * list all triggers in the database that reference a given table
458
     *
459
     * @param string table for which all referenced triggers should be found
460
     * @return mixed array of trigger names on success, a MDB2 error on failure
461
     * @access public
462
     */
463
    function listTableTriggers($table = null)
464
    {
465
        $db =& $this->getDBInstance();
466
        if (PEAR::isError($db)) {
467
            return $db;
468
        }
469
 
470
        $query = 'SHOW TRIGGERS';
471
        if (!is_null($table)) {
472
            $table = $db->quote($table, 'text');
473
            $query .= " LIKE $table";
474
        }
475
        $result = $db->queryCol($query);
476
        if (PEAR::isError($result)) {
477
            return $result;
478
        }
479
        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
480
            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
481
        }
482
        return $result;
483
    }
484
 
485
    // }}}
486
    // {{{ listTables()
487
 
488
    /**
489
     * list all tables in the current database
490
     *
491
     * @param string database, the current is default
492
     * @return mixed array of table names on success, a MDB2 error on failure
493
     * @access public
494
     */
495
    function listTables($database = null)
496
    {
497
        $db =& $this->getDBInstance();
498
        if (PEAR::isError($db)) {
499
            return $db;
500
        }
501
 
502
        $query = "SHOW /*!50002 FULL*/ TABLES";
503
        if (!is_null($database)) {
504
            $query .= " FROM $database";
505
        }
506
        $query.= "/*!50002  WHERE Table_type = 'BASE TABLE'*/";
507
 
508
        $table_names = $db->queryAll($query, null, MDB2_FETCHMODE_ORDERED);
509
        if (PEAR::isError($table_names)) {
510
            return $table_names;
511
        }
512
 
513
        $result = array();
514
        foreach ($table_names as $table) {
515
            if (!$this->_fixSequenceName($table[0], true)) {
516
                $result[] = $table[0];
517
            }
518
        }
519
        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
520
            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
521
        }
522
        return $result;
523
    }
524
 
525
    // }}}
526
    // {{{ listViews()
527
 
528
    /**
529
     * list all views in the current database
530
     *
531
     * @param string database, the current is default
532
     * @return mixed array of view names on success, a MDB2 error on failure
533
     * @access public
534
     */
535
    function listViews($database = null)
536
    {
537
        $db =& $this->getDBInstance();
538
        if (PEAR::isError($db)) {
539
            return $db;
540
        }
541
 
542
        $query = 'SHOW FULL TABLES';
543
        if (!is_null($database)) {
544
            $query.= " FROM $database";
545
        }
546
        $query.= " WHERE Table_type = 'VIEW'";
547
 
548
        $result = $db->queryCol($query);
549
        if (PEAR::isError($result)) {
550
            return $result;
551
        }
552
 
553
        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
554
            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
555
        }
556
        return $result;
557
    }
558
 
559
    // }}}
560
    // {{{ listTableFields()
561
 
562
    /**
563
     * list all fields in a table in the current database
564
     *
565
     * @param string $table name of table that should be used in method
566
     * @return mixed array of field names on success, a MDB2 error on failure
567
     * @access public
568
     */
569
    function listTableFields($table)
570
    {
571
        $db =& $this->getDBInstance();
572
        if (PEAR::isError($db)) {
573
            return $db;
574
        }
575
 
576
        $table = $db->quoteIdentifier($table, true);
577
        $result = $db->queryCol("SHOW COLUMNS FROM $table");
578
        if (PEAR::isError($result)) {
579
            return $result;
580
        }
581
        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
582
            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
583
        }
584
        return $result;
585
    }
586
 
587
    // }}}
588
    // {{{ createIndex()
589
 
590
    /**
591
     * Get the stucture of a field into an array
592
     *
593
     * @author Leoncx
594
     * @param string    $table         name of the table on which the index is to be created
595
     * @param string    $name         name of the index to be created
596
     * @param array     $definition        associative array that defines properties of the index to be created.
597
     *                                 Currently, only one property named FIELDS is supported. This property
598
     *                                 is also an associative with the names of the index fields as array
599
     *                                 indexes. Each entry of this array is set to another type of associative
600
     *                                 array that specifies properties of the index that are specific to
601
     *                                 each field.
602
     *
603
     *                                Currently, only the sorting property is supported. It should be used
604
     *                                 to define the sorting direction of the index. It may be set to either
605
     *                                 ascending or descending.
606
     *
607
     *                                Not all DBMS support index sorting direction configuration. The DBMS
608
     *                                 drivers of those that do not support it ignore this property. Use the
609
     *                                 function supports() to determine whether the DBMS driver can manage indexes.
610
     *
611
     *                                 Example
612
     *                                    array(
613
     *                                        'fields' => array(
614
     *                                            'user_name' => array(
615
     *                                                'sorting' => 'ascending'
616
     *                                                'length' => 10
617
     *                                            ),
618
     *                                            'last_login' => array()
619
     *                                        )
620
     *                                    )
621
     * @return mixed MDB2_OK on success, a MDB2 error on failure
622
     * @access public
623
     */
624
    function createIndex($table, $name, $definition)
625
    {
626
        $db =& $this->getDBInstance();
627
        if (PEAR::isError($db)) {
628
            return $db;
629
        }
630
 
631
        $table = $db->quoteIdentifier($table, true);
632
        $name = $db->quoteIdentifier($db->getIndexName($name), true);
633
        $query = "CREATE INDEX $name ON $table";
634
        $fields = array();
635
        foreach ($definition['fields'] as $field => $fieldinfo) {
636
            if (!empty($fieldinfo['length'])) {
637
                $fields[] = $db->quoteIdentifier($field, true) . '(' . $fieldinfo['length'] . ')';
638
            } else {
639
                $fields[] = $db->quoteIdentifier($field, true);
640
            }
641
        }
642
        $query .= ' ('. implode(', ', $fields) . ')';
643
        return $db->exec($query);
644
    }
645
 
646
    // }}}
647
    // {{{ dropIndex()
648
 
649
    /**
650
     * drop existing index
651
     *
652
     * @param string    $table         name of table that should be used in method
653
     * @param string    $name         name of the index to be dropped
654
     * @return mixed MDB2_OK on success, a MDB2 error on failure
655
     * @access public
656
     */
657
    function dropIndex($table, $name)
658
    {
659
        $db =& $this->getDBInstance();
660
        if (PEAR::isError($db)) {
661
            return $db;
662
        }
663
 
664
        $table = $db->quoteIdentifier($table, true);
665
        $name = $db->quoteIdentifier($db->getIndexName($name), true);
666
        return $db->exec("DROP INDEX $name ON $table");
667
    }
668
 
669
    // }}}
670
    // {{{ listTableIndexes()
671
 
672
    /**
673
     * list all indexes in a table
674
     *
675
     * @param string $table name of table that should be used in method
676
     * @return mixed array of index names on success, a MDB2 error on failure
677
     * @access public
678
     */
679
    function listTableIndexes($table)
680
    {
681
        $db =& $this->getDBInstance();
682
        if (PEAR::isError($db)) {
683
            return $db;
684
        }
685
 
686
        $key_name = 'Key_name';
687
        $non_unique = 'Non_unique';
688
        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
689
            if ($db->options['field_case'] == CASE_LOWER) {
690
                $key_name = strtolower($key_name);
691
                $non_unique = strtolower($non_unique);
692
            } else {
693
                $key_name = strtoupper($key_name);
694
                $non_unique = strtoupper($non_unique);
695
            }
696
        }
697
 
698
        $table = $db->quoteIdentifier($table, true);
699
        $query = "SHOW INDEX FROM $table";
700
        $indexes = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
701
        if (PEAR::isError($indexes)) {
702
            return $indexes;
703
        }
704
 
705
        $result = array();
706
        foreach ($indexes as $index_data) {
707
            if ($index_data[$non_unique] && ($index = $this->_fixIndexName($index_data[$key_name]))) {
708
                $result[$index] = true;
709
            }
710
        }
711
 
712
        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
713
            $result = array_change_key_case($result, $db->options['field_case']);
714
        }
715
        return array_keys($result);
716
    }
717
 
718
    // }}}
719
    // {{{ createConstraint()
720
 
721
    /**
722
     * create a constraint on a table
723
     *
724
     * @param string    $table        name of the table on which the constraint is to be created
725
     * @param string    $name         name of the constraint to be created
726
     * @param array     $definition   associative array that defines properties of the constraint to be created.
727
     *                                Currently, only one property named FIELDS is supported. This property
728
     *                                is also an associative with the names of the constraint fields as array
729
     *                                constraints. Each entry of this array is set to another type of associative
730
     *                                array that specifies properties of the constraint that are specific to
731
     *                                each field.
732
     *
733
     *                                Example
734
     *                                   array(
735
     *                                       'fields' => array(
736
     *                                           'user_name' => array(),
737
     *                                           'last_login' => array()
738
     *                                       )
739
     *                                   )
740
     * @return mixed MDB2_OK on success, a MDB2 error on failure
741
     * @access public
742
     */
743
    function createConstraint($table, $name, $definition)
744
    {
745
        $db =& $this->getDBInstance();
746
        if (PEAR::isError($db)) {
747
            return $db;
748
        }
749
 
750
        $type = '';
751
        $name = $db->quoteIdentifier($db->getIndexName($name), true);
752
        if (!empty($definition['primary'])) {
753
            $type = 'PRIMARY';
754
            $name = 'KEY';
755
        } elseif (!empty($definition['unique'])) {
756
            $type = 'UNIQUE';
757
        }
758
        if (empty($type)) {
759
            return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
760
                'invalid definition, could not create constraint', __FUNCTION__);
761
        }
762
 
763
        $table = $db->quoteIdentifier($table, true);
764
        $query = "ALTER TABLE $table ADD $type $name";
765
        $fields = array();
766
        foreach (array_keys($definition['fields']) as $field) {
767
            $fields[] = $db->quoteIdentifier($field, true);
768
        }
769
        $query .= ' ('. implode(', ', $fields) . ')';
770
        return $db->exec($query);
771
    }
772
 
773
    // }}}
774
    // {{{ dropConstraint()
775
 
776
    /**
777
     * drop existing constraint
778
     *
779
     * @param string    $table        name of table that should be used in method
780
     * @param string    $name         name of the constraint to be dropped
781
     * @param string    $primary      hint if the constraint is primary
782
     * @return mixed MDB2_OK on success, a MDB2 error on failure
783
     * @access public
784
     */
785
    function dropConstraint($table, $name, $primary = false)
786
    {
787
        $db =& $this->getDBInstance();
788
        if (PEAR::isError($db)) {
789
            return $db;
790
        }
791
 
792
        $table = $db->quoteIdentifier($table, true);
793
        if ($primary || strtolower($name) == 'primary') {
794
            $query = "ALTER TABLE $table DROP PRIMARY KEY";
795
        } else {
796
            $name = $db->quoteIdentifier($db->getIndexName($name), true);
797
            $query = "ALTER TABLE $table DROP INDEX $name";
798
        }
799
        return $db->exec($query);
800
    }
801
 
802
    // }}}
803
    // {{{ listTableConstraints()
804
 
805
    /**
806
     * list all constraints in a table
807
     *
808
     * @param string $table name of table that should be used in method
809
     * @return mixed array of constraint names on success, a MDB2 error on failure
810
     * @access public
811
     */
812
    function listTableConstraints($table)
813
    {
814
        $db =& $this->getDBInstance();
815
        if (PEAR::isError($db)) {
816
            return $db;
817
        }
818
 
819
        $key_name = 'Key_name';
820
        $non_unique = 'Non_unique';
821
        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
822
            if ($db->options['field_case'] == CASE_LOWER) {
823
                $key_name = strtolower($key_name);
824
                $non_unique = strtolower($non_unique);
825
            } else {
826
                $key_name = strtoupper($key_name);
827
                $non_unique = strtoupper($non_unique);
828
            }
829
        }
830
 
831
        $table = $db->quoteIdentifier($table, true);
832
        $query = "SHOW INDEX FROM $table";
833
        $indexes = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
834
        if (PEAR::isError($indexes)) {
835
            return $indexes;
836
        }
837
 
838
        $result = array();
839
        foreach ($indexes as $index_data) {
840
            if (!$index_data[$non_unique]) {
841
                if ($index_data[$key_name] !== 'PRIMARY') {
842
                    $index = $this->_fixIndexName($index_data[$key_name]);
843
                } else {
844
                    $index = 'PRIMARY';
845
                }
846
                if (!empty($index)) {
847
                    $result[$index] = true;
848
                }
849
            }
850
        }
851
 
852
        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
853
            $result = array_change_key_case($result, $db->options['field_case']);
854
        }
855
        return array_keys($result);
856
    }
857
 
858
    // }}}
859
    // {{{ createSequence()
860
 
861
    /**
862
     * create sequence
863
     *
864
     * @param string    $seq_name name of the sequence to be created
865
     * @param string    $start    start value of the sequence; default is 1
866
     * @param array     $options  An associative array of table options:
867
     *                          array(
868
     *                              'comment' => 'Foo',
869
     *                              'charset' => 'utf8',
870
     *                              'collate' => 'utf8_unicode_ci',
871
     *                              'type'    => 'innodb',
872
     *                          );
873
     * @return mixed MDB2_OK on success, a MDB2 error on failure
874
     * @access public
875
     */
876
    function createSequence($seq_name, $start = 1, $options = array())
877
    {
878
        $db =& $this->getDBInstance();
879
        if (PEAR::isError($db)) {
880
            return $db;
881
        }
882
 
883
        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
884
        $seqcol_name = $db->quoteIdentifier($db->options['seqcol_name'], true);
885
 
886
        $options_strings = array();
887
 
888
        if (!empty($options['comment'])) {
889
            $options_strings['comment'] = 'COMMENT = '.$db->quote($options['comment'], 'text');
890
        }
891
 
892
        if (!empty($options['charset'])) {
893
            $options_strings['charset'] = 'DEFAULT CHARACTER SET '.$options['charset'];
894
            if (!empty($options['collate'])) {
895
                $options_strings['charset'].= ' COLLATE '.$options['collate'];
896
            }
897
        }
898
 
899
        $type = false;
900
        if (!empty($options['type'])) {
901
            $type = $options['type'];
902
        } elseif ($db->options['default_table_type']) {
903
            $type = $db->options['default_table_type'];
904
        }
905
        if ($type) {
906
            $options_strings[] = "ENGINE = $type";
907
        }
908
 
909
        $query = "CREATE TABLE $sequence_name ($seqcol_name INT NOT NULL AUTO_INCREMENT, PRIMARY KEY ($seqcol_name))";
910
        if (!empty($options_strings)) {
911
            $query .= ' '.implode(' ', $options_strings);
912
        }
913
        $res = $db->exec($query);
914
 
915
        if (PEAR::isError($res)) {
916
            return $res;
917
        }
918
 
919
        if ($start == 1) {
920
            return MDB2_OK;
921
        }
922
 
923
        $query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (".($start-1).')';
924
        $res = $db->exec($query);
925
        if (!PEAR::isError($res)) {
926
            return MDB2_OK;
927
        }
928
 
929
        // Handle error
930
        $result = $db->exec("DROP TABLE $sequence_name");
931
        if (PEAR::isError($result)) {
932
            return $db->raiseError($result, null, null,
933
                'could not drop inconsistent sequence table', __FUNCTION__);
934
        }
935
 
936
        return $db->raiseError($res, null, null,
937
            'could not create sequence table', __FUNCTION__);
938
    }
939
 
940
    // }}}
941
    // {{{ dropSequence()
942
 
943
    /**
944
     * drop existing sequence
945
     *
946
     * @param string    $seq_name     name of the sequence to be dropped
947
     * @return mixed MDB2_OK on success, a MDB2 error on failure
948
     * @access public
949
     */
950
    function dropSequence($seq_name)
951
    {
952
        $db =& $this->getDBInstance();
953
        if (PEAR::isError($db)) {
954
            return $db;
955
        }
956
 
957
        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
958
        return $db->exec("DROP TABLE $sequence_name");
959
    }
960
 
961
    // }}}
962
    // {{{ listSequences()
963
 
964
    /**
965
     * list all sequences in the current database
966
     *
967
     * @param string database, the current is default
968
     * @return mixed array of sequence names on success, a MDB2 error on failure
969
     * @access public
970
     */
971
    function listSequences($database = null)
972
    {
973
        $db =& $this->getDBInstance();
974
        if (PEAR::isError($db)) {
975
            return $db;
976
        }
977
 
978
        $query = "SHOW TABLES";
979
        if (!is_null($database)) {
980
            $query .= " FROM $database";
981
        }
982
        $table_names = $db->queryCol($query);
983
        if (PEAR::isError($table_names)) {
984
            return $table_names;
985
        }
986
 
987
        $result = array();
988
        foreach ($table_names as $table_name) {
989
            if ($sqn = $this->_fixSequenceName($table_name, true)) {
990
                $result[] = $sqn;
991
            }
992
        }
993
        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
994
            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
995
        }
996
        return $result;
997
    }
998
 
999
    // }}}
1000
}
1001
?>