| commit | author | age | ||
| c9462d | 1 | <?php |
| S | 2 | // +----------------------------------------------------------------------+ |
| 3 | // | PHP versions 4 and 5 | | |
| 4 | // +----------------------------------------------------------------------+ | |
| 5 | // | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, | | |
| 6 | // | Stig. S. Bakken, Lukas Smith, Frank M. Kromann | | |
| 7 | // | All rights reserved. | | |
| 8 | // +----------------------------------------------------------------------+ | |
| 9 | // | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB | | |
| 10 | // | API as well as database abstraction for PHP applications. | | |
| 11 | // | This LICENSE is in the BSD license style. | | |
| 12 | // | | | |
| 13 | // | Redistribution and use in source and binary forms, with or without | | |
| 14 | // | modification, are permitted provided that the following conditions | | |
| 15 | // | are met: | | |
| 16 | // | | | |
| 17 | // | Redistributions of source code must retain the above copyright | | |
| 18 | // | notice, this list of conditions and the following disclaimer. | | |
| 19 | // | | | |
| 20 | // | Redistributions in binary form must reproduce the above copyright | | |
| 21 | // | notice, this list of conditions and the following disclaimer in the | | |
| 22 | // | documentation and/or other materials provided with the distribution. | | |
| 23 | // | | | |
| 24 | // | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, | | |
| 25 | // | Lukas Smith nor the names of his contributors may be used to endorse | | |
| 26 | // | or promote products derived from this software without specific prior| | |
| 27 | // | written permission. | | |
| 28 | // | | | |
| 29 | // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | | |
| 30 | // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | | |
| 31 | // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | | |
| 32 | // | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | | |
| 33 | // | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | | |
| 34 | // | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | | |
| 35 | // | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS| | |
| 36 | // | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | | |
| 37 | // | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | | |
| 38 | // | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY| | |
| 39 | // | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | | |
| 40 | // | POSSIBILITY OF SUCH DAMAGE. | | |
| 41 | // +----------------------------------------------------------------------+ | |
| 42 | // | Author: Lukas Smith <smith@pooteeweet.org> | | |
| 43 | // +----------------------------------------------------------------------+ | |
| 44 | // | |
| 45 | // $Id$ | |
| 46 | // | |
| 47 | ||
| 48 | require_once 'MDB2/Driver/Manager/Common.php'; | |
| 49 | ||
| 50 | /** | |
| 51 | * MDB2 FrontBase driver for the management modules | |
| 52 | * | |
| 53 | * @package MDB2 | |
| 54 | * @category Database | |
| 55 | * @author Frank M. Kromann <frank@kromann.info> | |
| 56 | */ | |
| 57 | class MDB2_Driver_Manager_fbsql extends MDB2_Driver_Manager_Common | |
| 58 | { | |
| 59 | // {{{ createDatabase() | |
| 60 | ||
| 61 | /** | |
| 62 | * create a new database | |
| 63 | * | |
| 64 | * @param string $name name of the database that should be created | |
| 65 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 66 | * @access public | |
| 67 | */ | |
| 68 | function createDatabase($name) | |
| 69 | { | |
| 70 | $db =& $this->getDBInstance(); | |
| 71 | if (PEAR::isError($db)) { | |
| 72 | return $db; | |
| 73 | } | |
| 74 | ||
| 75 | if (PEAR::isError($result = $db->connect())) { | |
| 76 | return $result; | |
| 77 | } | |
| 78 | $query = "CREATE DATABASE $name"; | |
| 79 | if (PEAR::isError($result = $db->query($query))) { | |
| 80 | return $result; | |
| 81 | } | |
| 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 $db; | |
| 101 | } | |
| 102 | ||
| 103 | if (PEAR::isError($result = $db->connect())) { | |
| 104 | return $result; | |
| 105 | } | |
| 106 | $query = "DELETE DATABASE $name"; | |
| 107 | if (PEAR::isError($result = $db->query($query))) { | |
| 108 | return $result; | |
| 109 | } | |
| 110 | ||
| 111 | return MDB2_OK; | |
| 112 | } | |
| 113 | ||
| 114 | // }}} | |
| 115 | // {{{ dropTable() | |
| 116 | ||
| 117 | /** | |
| 118 | * drop an existing table | |
| 119 | * | |
| 120 | * @param object $dbs database object that is extended by this class | |
| 121 | * @param string $name name of the table that should be dropped | |
| 122 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 123 | * @access public | |
| 124 | */ | |
| 125 | function dropTable($name) | |
| 126 | { | |
| 127 | $db =& $this->getDBInstance(); | |
| 128 | if (PEAR::isError($db)) { | |
| 129 | return $db; | |
| 130 | } | |
| 131 | ||
| 132 | return $db->query("DROP TABLE $name CASCADE"); | |
| 133 | } | |
| 134 | ||
| 135 | // }}} | |
| 136 | // {{{ alterTable() | |
| 137 | ||
| 138 | /** | |
| 139 | * alter an existing table | |
| 140 | * | |
| 141 | * @param string $name name of the table that is intended to be changed. | |
| 142 | * @param array $changes associative array that contains the details of each type | |
| 143 | * of change that is intended to be performed. The types of | |
| 144 | * changes that are currently supported are defined as follows: | |
| 145 | * | |
| 146 | * name | |
| 147 | * | |
| 148 | * New name for the table. | |
| 149 | * | |
| 150 | * add | |
| 151 | * | |
| 152 | * Associative array with the names of fields to be added as | |
| 153 | * indexes of the array. The value of each entry of the array | |
| 154 | * should be set to another associative array with the properties | |
| 155 | * of the fields to be added. The properties of the fields should | |
| 156 | * be the same as defined by the Metabase parser. | |
| 157 | * | |
| 158 | * | |
| 159 | * remove | |
| 160 | * | |
| 161 | * Associative array with the names of fields to be removed as indexes | |
| 162 | * of the array. Currently the values assigned to each entry are ignored. | |
| 163 | * An empty array should be used for future compatibility. | |
| 164 | * | |
| 165 | * rename | |
| 166 | * | |
| 167 | * Associative array with the names of fields to be renamed as indexes | |
| 168 | * of the array. The value of each entry of the array should be set to | |
| 169 | * another associative array with the entry named name with the new | |
| 170 | * field name and the entry named Declaration that is expected to contain | |
| 171 | * the portion of the field declaration already in DBMS specific SQL code | |
| 172 | * as it is used in the CREATE TABLE statement. | |
| 173 | * | |
| 174 | * change | |
| 175 | * | |
| 176 | * Associative array with the names of the fields to be changed as indexes | |
| 177 | * of the array. Keep in mind that if it is intended to change either the | |
| 178 | * name of a field and any other properties, the change array entries | |
| 179 | * should have the new names of the fields as array indexes. | |
| 180 | * | |
| 181 | * The value of each entry of the array should be set to another associative | |
| 182 | * array with the properties of the fields to that are meant to be changed as | |
| 183 | * array entries. These entries should be assigned to the new values of the | |
| 184 | * respective properties. The properties of the fields should be the same | |
| 185 | * as defined by the Metabase parser. | |
| 186 | * | |
| 187 | * Example | |
| 188 | * array( | |
| 189 | * 'name' => 'userlist', | |
| 190 | * 'add' => array( | |
| 191 | * 'quota' => array( | |
| 192 | * 'type' => 'integer', | |
| 193 | * 'unsigned' => 1 | |
| 194 | * ) | |
| 195 | * ), | |
| 196 | * 'remove' => array( | |
| 197 | * 'file_limit' => array(), | |
| 198 | * 'time_limit' => array() | |
| 199 | * ), | |
| 200 | * 'change' => array( | |
| 201 | * 'gender' => array( | |
| 202 | * 'default' => 'M', | |
| 203 | * ) | |
| 204 | * ), | |
| 205 | * 'rename' => array( | |
| 206 | * 'sex' => array( | |
| 207 | * 'name' => 'gender', | |
| 208 | * ) | |
| 209 | * ) | |
| 210 | * ) | |
| 211 | * | |
| 212 | * @param boolean $check indicates whether the function should just check if the DBMS driver | |
| 213 | * can perform the requested table alterations if the value is true or | |
| 214 | * actually perform them otherwise. | |
| 215 | * @access public | |
| 216 | * | |
| 217 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 218 | */ | |
| 219 | function alterTable($name, $changes, $check) | |
| 220 | { | |
| 221 | $db =& $this->getDBInstance(); | |
| 222 | if (PEAR::isError($db)) { | |
| 223 | return $db; | |
| 224 | } | |
| 225 | ||
| 226 | foreach ($changes as $change_name => $change){ | |
| 227 | switch ($change_name) { | |
| 228 | case 'add': | |
| 229 | case 'remove': | |
| 230 | case 'change': | |
| 231 | case 'rename': | |
| 232 | case 'name': | |
| 233 | break; | |
| 234 | default: | |
| 235 | return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null, | |
| 236 | 'alterTable: change type "'.$change_name.'" not yet supported'); | |
| 237 | } | |
| 238 | } | |
| 239 | ||
| 240 | if ($check) { | |
| 241 | return MDB2_OK; | |
| 242 | } | |
| 243 | ||
| 244 | $query = (array_key_exists('name', $changes) ? 'RENAME AS '.$changes['name'] : ''); | |
| 245 | ||
| 246 | if (array_key_exists('add', $changes)) { | |
| 247 | foreach ($changes['add'] as $field_name => $field) { | |
| 248 | $type_declaration = $db->getDeclaration($field['type'], $field_name, $field); | |
| 249 | if (PEAR::isError($type_declaration)) { | |
| 250 | return $err; | |
| 251 | } | |
| 252 | if ($query) { | |
| 253 | $query.= ', '; | |
| 254 | } | |
| 255 | $query.= 'ADD ' . $type_declaration; | |
| 256 | } | |
| 257 | } | |
| 258 | ||
| 259 | if (array_key_exists('remove', $changes)) { | |
| 260 | foreach ($changes['remove'] as $field_name => $field) { | |
| 261 | if ($query) { | |
| 262 | $query.= ', '; | |
| 263 | } | |
| 264 | $query.= 'DROP ' . $field_name; | |
| 265 | } | |
| 266 | } | |
| 267 | ||
| 268 | $rename = array(); | |
| 269 | if (array_key_exists('rename', $changes)) { | |
| 270 | foreach ($changes['rename'] as $field_name => $field) { | |
| 271 | $rename[$field['name']] = $field_name; | |
| 272 | } | |
| 273 | } | |
| 274 | ||
| 275 | if (array_key_exists('change', $changes)) { | |
| 276 | foreach ($changes['change'] as $field_name => $field) { | |
| 277 | if ($query) { | |
| 278 | $query.= ', '; | |
| 279 | } | |
| 280 | if (isset($rename[$field_name])) { | |
| 281 | $old_field_name = $rename[$field_name]; | |
| 282 | unset($rename[$field_name]); | |
| 283 | } else { | |
| 284 | $old_field_name = $field_name; | |
| 285 | } | |
| 286 | $query.= "CHANGE $old_field_name " . $db->getDeclaration($field['type'], $old_field_name, $field); | |
| 287 | } | |
| 288 | } | |
| 289 | ||
| 290 | if (!empty($rename)) { | |
| 291 | foreach ($rename as $renamed_field_name => $renamed_field) { | |
| 292 | if ($query) { | |
| 293 | $query.= ', '; | |
| 294 | } | |
| 295 | $old_field_name = $rename[$renamed_field_name]; | |
| 296 | $field = $changes['rename'][$old_field_name]; | |
| 297 | $query.= 'CHANGE ' . $db->getDeclaration($field['type'], $old_field_name, $field); | |
| 298 | } | |
| 299 | } | |
| 300 | ||
| 301 | if (!$query) { | |
| 302 | return MDB2_OK; | |
| 303 | } | |
| 304 | ||
| 305 | return $db->query("ALTER TABLE $name $query"); | |
| 306 | } | |
| 307 | ||
| 308 | // }}} | |
| 309 | // {{{ listDatabases() | |
| 310 | ||
| 311 | /** | |
| 312 | * list all databases | |
| 313 | * | |
| 314 | * @return mixed data array on success, a MDB2 error on failure | |
| 315 | * @access public | |
| 316 | */ | |
| 317 | function listDatabases() | |
| 318 | { | |
| 319 | $db =& $this->getDBInstance(); | |
| 320 | if (PEAR::isError($db)) { | |
| 321 | return $db; | |
| 322 | } | |
| 323 | ||
| 324 | return $db->raiseError(MDB2_ERROR_NOT_CAPABLE); | |
| 325 | } | |
| 326 | ||
| 327 | // }}} | |
| 328 | // {{{ listUsers() | |
| 329 | ||
| 330 | /** | |
| 331 | * list all users | |
| 332 | * | |
| 333 | * @return mixed data array on success, a MDB2 error on failure | |
| 334 | * @access public | |
| 335 | */ | |
| 336 | function listUsers() | |
| 337 | { | |
| 338 | $db =& $this->getDBInstance(); | |
| 339 | if (PEAR::isError($db)) { | |
| 340 | return $db; | |
| 341 | } | |
| 342 | ||
| 343 | return $db->queryCol('SELECT "user_name" FROM information_schema.users'); | |
| 344 | } | |
| 345 | ||
| 346 | // }}} | |
| 347 | // {{{ listTables() | |
| 348 | ||
| 349 | /** | |
| 350 | * list all tables in the current database | |
| 351 | * | |
| 352 | * @return mixed data array on success, a MDB2 error on failure | |
| 353 | * @access public | |
| 354 | */ | |
| 355 | function listTables() | |
| 356 | { | |
| 357 | $db =& $this->getDBInstance(); | |
| 358 | if (PEAR::isError($db)) { | |
| 359 | return $db; | |
| 360 | } | |
| 361 | ||
| 362 | $table_names = $db->queryCol('SELECT "table_name"' | |
| 363 | . ' FROM information_schema.tables' | |
| 364 | . ' t0, information_schema.schemata t1' | |
| 365 | . ' WHERE t0.schema_pk=t1.schema_pk AND' | |
| 366 | . ' "table_type" = \'BASE TABLE\'' | |
| 367 | . ' AND "schema_name" = current_schema'); | |
| 368 | if (PEAR::isError($table_names)) { | |
| 369 | return $table_names; | |
| 370 | } | |
| 371 | for ($i = 0, $j = count($table_names), $tables = array(); $i < $j; ++$i) { | |
| 372 | if (!$this->_isSequenceName($table_names[$i])) | |
| 373 | $tables[] = $table_names[$i]; | |
| 374 | } | |
| 375 | return $tables; | |
| 376 | } | |
| 377 | ||
| 378 | // }}} | |
| 379 | // {{{ listTableFields() | |
| 380 | ||
| 381 | /** | |
| 382 | * list all fields in a tables in the current database | |
| 383 | * | |
| 384 | * @param string $table name of table that should be used in method | |
| 385 | * @return mixed data array on success, a MDB2 error on failure | |
| 386 | * @access public | |
| 387 | */ | |
| 388 | function listTableFields($table) | |
| 389 | { | |
| 390 | $db =& $this->getDBInstance(); | |
| 391 | if (PEAR::isError($db)) { | |
| 392 | return $db; | |
| 393 | } | |
| 394 | ||
| 395 | $fields = $db->queryCol("SHOW COLUMNS FROM $table"); | |
| 396 | if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { | |
| 397 | $fields = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $fields); | |
| 398 | } | |
| 399 | return $fields; | |
| 400 | } | |
| 401 | ||
| 402 | // }}} | |
| 403 | // {{{ createIndex() | |
| 404 | ||
| 405 | /** | |
| 406 | * get the stucture of a field into an array | |
| 407 | * | |
| 408 | * @param string $table name of the table on which the index is to be created | |
| 409 | * @param string $name name of the index to be created | |
| 410 | * @param array $definition associative array that defines properties of the index to be created. | |
| 411 | * Currently, only one property named FIELDS is supported. This property | |
| 412 | * is also an associative with the names of the index fields as array | |
| 413 | * indexes. Each entry of this array is set to another type of associative | |
| 414 | * array that specifies properties of the index that are specific to | |
| 415 | * each field. | |
| 416 | * | |
| 417 | * Currently, only the sorting property is supported. It should be used | |
| 418 | * to define the sorting direction of the index. It may be set to either | |
| 419 | * ascending or descending. | |
| 420 | * | |
| 421 | * Not all DBMS support index sorting direction configuration. The DBMS | |
| 422 | * drivers of those that do not support it ignore this property. Use the | |
| 423 | * function support() to determine whether the DBMS driver can manage indexes. | |
| 424 | ||
| 425 | * Example | |
| 426 | * array( | |
| 427 | * 'fields' => array( | |
| 428 | * 'user_name' => array( | |
| 429 | * 'sorting' => 'ascending' | |
| 430 | * ), | |
| 431 | * 'last_login' => array() | |
| 432 | * ) | |
| 433 | * ) | |
| 434 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 435 | * @access public | |
| 436 | */ | |
| 437 | function createIndex($table, $name, $definition) | |
| 438 | { | |
| 439 | $db =& $this->getDBInstance(); | |
| 440 | if (PEAR::isError($db)) { | |
| 441 | return $db; | |
| 442 | } | |
| 443 | ||
| 444 | $query = "CREATE ".(array_key_exists('unique', $definition) ? 'UNIQUE INDEX' : 'INDEX')." $name on $table ("; | |
| 445 | $query.= implode(', ', array_keys($definition['fields'])); | |
| 446 | $query.= ')'; | |
| 447 | return $db->query($query); | |
| 448 | } | |
| 449 | ||
| 450 | // }}} | |
| 451 | // {{{ dropIndex() | |
| 452 | ||
| 453 | /** | |
| 454 | * drop existing index | |
| 455 | * | |
| 456 | * @param string $table name of table that should be used in method | |
| 457 | * @param string $name name of the index to be dropped | |
| 458 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 459 | * @access public | |
| 460 | */ | |
| 461 | function dropIndex($table, $name) | |
| 462 | { | |
| 463 | $db =& $this->getDBInstance(); | |
| 464 | if (PEAR::isError($db)) { | |
| 465 | return $db; | |
| 466 | } | |
| 467 | ||
| 468 | return $db->query("ALTER TABLE $table DROP INDEX $name"); | |
| 469 | } | |
| 470 | ||
| 471 | // }}} | |
| 472 | // {{{ listTableIndexes() | |
| 473 | ||
| 474 | /** | |
| 475 | * list all indexes in a table | |
| 476 | * | |
| 477 | * @param string $table name of table that should be used in method | |
| 478 | * @return mixed data array on success, a MDB2 error on failure | |
| 479 | * @access public | |
| 480 | */ | |
| 481 | function listTableIndexes($table) | |
| 482 | { | |
| 483 | $db =& $this->getDBInstance(); | |
| 484 | if (PEAR::isError($db)) { | |
| 485 | return $db; | |
| 486 | } | |
| 487 | ||
| 488 | $key_name = 'Key_name'; | |
| 489 | if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { | |
| 490 | if ($db->options['field_case'] == CASE_LOWER) { | |
| 491 | $key_name = strtolower($key_name); | |
| 492 | } else { | |
| 493 | $key_name = strtoupper($key_name); | |
| 494 | } | |
| 495 | } | |
| 496 | ||
| 497 | $query = "SHOW INDEX FROM $table"; | |
| 498 | $indexes_all = $db->queryCol($query, 'text', $key_name); | |
| 499 | if (PEAR::isError($indexes_all)) { | |
| 500 | return $indexes_all; | |
| 501 | } | |
| 502 | ||
| 503 | $indexes = array_unique($indexes_all); | |
| 504 | ||
| 505 | if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { | |
| 506 | $indexes = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $indexes); | |
| 507 | } | |
| 508 | ||
| 509 | return $indexes; | |
| 510 | } | |
| 511 | ||
| 512 | // }}} | |
| 513 | // {{{ createSequence() | |
| 514 | ||
| 515 | /** | |
| 516 | * create sequence | |
| 517 | * | |
| 518 | * @param string $seq_name name of the sequence to be created | |
| 519 | * @param string $start start value of the sequence; default is 1 | |
| 520 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 521 | * @access public | |
| 522 | */ | |
| 523 | function createSequence($seq_name, $start = 1) | |
| 524 | { | |
| 525 | $db =& $this->getDBInstance(); | |
| 526 | if (PEAR::isError($db)) { | |
| 527 | return $db; | |
| 528 | } | |
| 529 | ||
| 530 | $sequence_name = $db->getSequenceName($seq_name); | |
| 531 | $seqcol_name = $db->options['seqcol_name']; | |
| 532 | $query = "CREATE TABLE $sequence_name ($seqcol_name INTEGER DEFAULT UNIQUE, PRIMARY KEY($seqcol_name))"; | |
| 533 | $res = $db->query($query); | |
| 534 | $res = $db->query("SET UNIQUE = 1 FOR $sequence_name"); | |
| 535 | if (PEAR::isError($res)) { | |
| 536 | return $res; | |
| 537 | } | |
| 538 | if ($start == 1) { | |
| 539 | return MDB2_OK; | |
| 540 | } | |
| 541 | $res = $db->query("INSERT INTO $sequence_name ($seqcol_name) VALUES (".($start-1).')'); | |
| 542 | if (!PEAR::isError($res)) { | |
| 543 | return MDB2_OK; | |
| 544 | } | |
| 545 | // Handle error | |
| 546 | $result = $db->query("DROP TABLE $sequence_name"); | |
| 547 | if (PEAR::isError($result)) { | |
| 548 | return $db->raiseError(MDB2_ERROR, null, null, | |
| 549 | 'createSequence: could not drop inconsistent sequence table ('. | |
| 550 | $result->getMessage().' ('.$result->getUserinfo().'))'); | |
| 551 | } | |
| 552 | return $db->raiseError(MDB2_ERROR, null, null, | |
| 553 | 'createSequence: could not create sequence table ('. | |
| 554 | $res->getMessage().' ('.$res->getUserinfo().'))'); | |
| 555 | } | |
| 556 | ||
| 557 | // }}} | |
| 558 | // {{{ dropSequence() | |
| 559 | ||
| 560 | /** | |
| 561 | * drop existing sequence | |
| 562 | * | |
| 563 | * @param string $seq_name name of the sequence to be dropped | |
| 564 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 565 | * @access public | |
| 566 | */ | |
| 567 | function dropSequence($seq_name) | |
| 568 | { | |
| 569 | $db =& $this->getDBInstance(); | |
| 570 | if (PEAR::isError($db)) { | |
| 571 | return $db; | |
| 572 | } | |
| 573 | ||
| 574 | $sequence_name = $db->getSequenceName($seq_name); | |
| 575 | return $db->query("DROP TABLE $sequence_name CASCADE"); | |
| 576 | } | |
| 577 | ||
| 578 | // }}} | |
| 579 | // {{{ listSequences() | |
| 580 | ||
| 581 | /** | |
| 582 | * list all sequences in the current database | |
| 583 | * | |
| 584 | * @return mixed data array on success, a MDB2 error on failure | |
| 585 | * @access public | |
| 586 | */ | |
| 587 | function listSequences() | |
| 588 | { | |
| 589 | $db =& $this->getDBInstance(); | |
| 590 | if (PEAR::isError($db)) { | |
| 591 | return $db; | |
| 592 | } | |
| 593 | ||
| 594 | $table_names = $db->queryCol('SHOW TABLES', 'text'); | |
| 595 | if (PEAR::isError($table_names)) { | |
| 596 | return $table_names; | |
| 597 | } | |
| 598 | $sequences = array(); | |
| 599 | for ($i = 0, $j = count($table_names); $i < $j; ++$i) { | |
| 600 | if ($sqn = $this->_isSequenceName($table_names[$i])) | |
| 601 | $sequences[] = $sqn; | |
| 602 | } | |
| 603 | return $sequences; | |
| 604 | } | |
| 605 | // }}} | |
| 606 | } | |
| 607 | ||
| 608 | ?> | |
