| 1 | <?php |
| 2 | /* |
| 3 | * $Id: Migration.php 1080 2007-02-10 18:17:08Z jwage $ |
| 4 | * |
| 5 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 6 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 7 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 8 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 9 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 10 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 11 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 12 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 13 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 14 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 15 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 16 | * |
| 17 | * This software consists of voluntary contributions made by many individuals |
| 18 | * and is licensed under the LGPL. For more information, see |
| 19 | * <http://www.phpdoctrine.com>. |
| 20 | */ |
| 21 | |
| 22 | /** |
| 23 | * Doctrine_Migration |
| 24 | * |
| 25 | * this class represents a database view |
| 26 | * |
| 27 | * @package Doctrine |
| 28 | * @subpackage Migration |
| 29 | * @license http://www.opensource.org/licenses/lgpl-license.php LGPL |
| 30 | * @link www.phpdoctrine.com |
| 31 | * @since 1.0 |
| 32 | * @version $Revision: 1080 $ |
| 33 | * @author Jonathan H. Wage <jwage@mac.com> |
| 34 | */ |
| 35 | class Doctrine_Migration |
| 36 | { |
| 37 | protected $_changes = array('created_tables' => array(), |
| 38 | 'renamed_tables' => array(), |
| 39 | 'created_constraints' => array(), |
| 40 | 'dropped_fks' => array(), |
| 41 | 'created_fks' => array(), |
| 42 | 'dropped_constraints' => array(), |
| 43 | 'removed_indexes' => array(), |
| 44 | 'dropped_tables' => array(), |
| 45 | 'added_columns' => array(), |
| 46 | 'renamed_columns' => array(), |
| 47 | 'changed_columns' => array(), |
| 48 | 'removed_columns' => array(), |
| 49 | 'added_indexes' => array()), |
| 50 | $_migrationTableName = 'migration_version', |
| 51 | $_migrationClassesDirectory = array(), |
| 52 | $_migrationClasses = array(), |
| 53 | $_loadedMigrations = array(); |
| 54 | |
| 55 | /** |
| 56 | * construct |
| 57 | * |
| 58 | * Specify the path to the directory with the migration classes. |
| 59 | * The classes will be loaded and the migration table will be created if it does not already exist |
| 60 | * |
| 61 | * @param string $directory |
| 62 | * @return void |
| 63 | */ |
| 64 | public function __construct($directory = null) |
| 65 | { |
| 66 | if ($directory != null) { |
| 67 | $this->_migrationClassesDirectory = $directory; |
| 68 | |
| 69 | $this->loadMigrationClasses(); |
| 70 | |
| 71 | $this->createMigrationTable(); |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * createMigrationTable |
| 77 | * |
| 78 | * Creates the migration table used to store the current version |
| 79 | * |
| 80 | * @return void |
| 81 | */ |
| 82 | protected function createMigrationTable() |
| 83 | { |
| 84 | $conn = Doctrine_Manager::connection(); |
| 85 | |
| 86 | try { |
| 87 | $conn->export->createTable($this->_migrationTableName, array('version' => array('type' => 'integer', 'size' => 11))); |
| 88 | |
| 89 | return true; |
| 90 | } catch(Exception $e) { |
| 91 | return false; |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * loadMigrationClasses |
| 97 | * |
| 98 | * Loads the migration classes for the directory specified by the constructor |
| 99 | * |
| 100 | * @return void |
| 101 | */ |
| 102 | protected function loadMigrationClasses() |
| 103 | { |
| 104 | if ($this->_migrationClasses) { |
| 105 | return $this->_migrationClasses; |
| 106 | } |
| 107 | |
| 108 | $classes = get_declared_classes(); |
| 109 | |
| 110 | if ($this->_migrationClassesDirectory !== null) { |
| 111 | foreach ((array) $this->_migrationClassesDirectory as $dir) { |
| 112 | $it = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir), |
| 113 | RecursiveIteratorIterator::LEAVES_ONLY); |
| 114 | |
| 115 | foreach ($it as $file) { |
| 116 | $e = explode('.', $file->getFileName()); |
| 117 | if (end($e) === 'php' && strpos($file->getFileName(), '.inc') === false) { |
| 118 | if ( ! in_array($file->getFileName(), $this->_loadedMigrations)) { |
| 119 | require_once($file->getPathName()); |
| 120 | |
| 121 | $requiredClass = array_diff(get_declared_classes(), $classes); |
| 122 | $requiredClass = end($requiredClass); |
| 123 | |
| 124 | if ($requiredClass) { |
| 125 | $this->_loadedMigrations[$requiredClass] = $file->getFileName(); |
| 126 | } |
| 127 | } |
| 128 | } |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | $parent = new ReflectionClass('Doctrine_Migration'); |
| 134 | |
| 135 | foreach ($this->_loadedMigrations as $name => $fileName) { |
| 136 | $class = new ReflectionClass($name); |
| 137 | |
| 138 | while ($class->isSubclassOf($parent)) { |
| 139 | |
| 140 | $class = $class->getParentClass(); |
| 141 | if ($class === false) { |
| 142 | break; |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | if ($class === false) { |
| 147 | continue; |
| 148 | } |
| 149 | |
| 150 | $e = explode('_', $fileName); |
| 151 | $classMigrationNum = (int) $e[0]; |
| 152 | |
| 153 | $this->_migrationClasses[$classMigrationNum] = array('className' => $name, 'fileName' => $fileName); |
| 154 | } |
| 155 | |
| 156 | return $this->_migrationClasses; |
| 157 | } |
| 158 | |
| 159 | /** |
| 160 | * getMigrationClasses |
| 161 | * |
| 162 | * @return void |
| 163 | */ |
| 164 | public function getMigrationClasses() |
| 165 | { |
| 166 | return $this->_migrationClasses; |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * setCurrentVersion |
| 171 | * |
| 172 | * Sets the current version in the migration table |
| 173 | * |
| 174 | * @param string $number |
| 175 | * @return void |
| 176 | */ |
| 177 | protected function setCurrentVersion($number) |
| 178 | { |
| 179 | $conn = Doctrine_Manager::connection(); |
| 180 | |
| 181 | if ($this->hasMigrated()) { |
| 182 | $conn->exec("UPDATE " . $this->_migrationTableName . " SET version = $number"); |
| 183 | } else { |
| 184 | $conn->exec("INSERT INTO " . $this->_migrationTableName . " (version) VALUES ($number)"); |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * getCurrentVersion |
| 190 | * |
| 191 | * Get the current version of the database |
| 192 | * |
| 193 | * @return void |
| 194 | */ |
| 195 | public function getCurrentVersion() |
| 196 | { |
| 197 | $conn = Doctrine_Manager::connection(); |
| 198 | |
| 199 | $result = $conn->fetchColumn("SELECT version FROM " . $this->_migrationTableName); |
| 200 | |
| 201 | return isset($result[0]) ? $result[0]:0; |
| 202 | } |
| 203 | |
| 204 | /** |
| 205 | * hasMigrated |
| 206 | * |
| 207 | * Returns true/false for whether or not this database has been migrated in the past |
| 208 | * |
| 209 | * @return void |
| 210 | */ |
| 211 | public function hasMigrated() |
| 212 | { |
| 213 | $conn = Doctrine_Manager::connection(); |
| 214 | |
| 215 | $result = $conn->fetchColumn("SELECT version FROM " . $this->_migrationTableName); |
| 216 | |
| 217 | return isset($result[0]) ? true:false; |
| 218 | } |
| 219 | |
| 220 | /** |
| 221 | * getLatestVersion |
| 222 | * |
| 223 | * Gets the latest possible version from the loaded migration classes |
| 224 | * |
| 225 | * @return void |
| 226 | */ |
| 227 | public function getLatestVersion() |
| 228 | { |
| 229 | $this->loadMigrationClasses(); |
| 230 | |
| 231 | $versions = array(); |
| 232 | foreach (array_keys($this->_migrationClasses) as $classMigrationNum) { |
| 233 | $versions[$classMigrationNum] = $classMigrationNum; |
| 234 | } |
| 235 | |
| 236 | rsort($versions); |
| 237 | |
| 238 | return isset($versions[0]) ? $versions[0]:0; |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * getNextVersion |
| 243 | * |
| 244 | * @return integer $nextVersion |
| 245 | */ |
| 246 | public function getNextVersion() |
| 247 | { |
| 248 | return $this->getLatestVersion() + 1; |
| 249 | } |
| 250 | |
| 251 | /** |
| 252 | * getMigrationClass |
| 253 | * |
| 254 | * Get instance of migration class for $num |
| 255 | * |
| 256 | * @param string $num |
| 257 | * @return void |
| 258 | */ |
| 259 | protected function getMigrationClass($num) |
| 260 | { |
| 261 | foreach ($this->_migrationClasses as $classMigrationNum => $info) { |
| 262 | $className = $info['className']; |
| 263 | |
| 264 | if ($classMigrationNum == $num) { |
| 265 | return new $className(); |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | throw new Doctrine_Migration_Exception('Could not find migration class for migration step: '.$num); |
| 270 | } |
| 271 | |
| 272 | /** |
| 273 | * doMigrateStep |
| 274 | * |
| 275 | * Perform migration directory for the specified version. Loads migration classes and performs the migration then processes the changes |
| 276 | * |
| 277 | * @param string $direction |
| 278 | * @param string $num |
| 279 | * @return void |
| 280 | */ |
| 281 | protected function doMigrateStep($direction, $num) |
| 282 | { |
| 283 | $migrate = $this->getMigrationClass($num); |
| 284 | |
| 285 | $migrate->doMigrate($direction); |
| 286 | } |
| 287 | |
| 288 | /** |
| 289 | * doMigrate |
| 290 | * |
| 291 | * Perform migration for a migration class. Executes the up or down method then processes the changes |
| 292 | * |
| 293 | * @param string $direction |
| 294 | * @return void |
| 295 | */ |
| 296 | protected function doMigrate($direction) |
| 297 | { |
| 298 | if (method_exists($this, $direction)) { |
| 299 | $this->$direction(); |
| 300 | |
| 301 | foreach ($this->_changes as $type => $changes) { |
| 302 | $process = new Doctrine_Migration_Process(); |
| 303 | $funcName = 'process' . Doctrine::classify($type); |
| 304 | |
| 305 | if ( ! empty($changes)) { |
| 306 | $process->$funcName($changes); |
| 307 | } |
| 308 | } |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | /** |
| 313 | * migrate |
| 314 | * |
| 315 | * Perform a migration chain by specifying the $from and $to. |
| 316 | * If you do not specify a $from or $to then it will attempt to migrate from the current version to the latest version |
| 317 | * |
| 318 | * @param string $from |
| 319 | * @param string $to |
| 320 | * @return void |
| 321 | */ |
| 322 | public function migrate($to = null) |
| 323 | { |
| 324 | $from = $this->getCurrentVersion(); |
| 325 | |
| 326 | // If nothing specified then lets assume we are migrating from the current version to the latest version |
| 327 | if ($to === null) { |
| 328 | $to = $this->getLatestVersion(); |
| 329 | } |
| 330 | |
| 331 | if ($from == $to) { |
| 332 | throw new Doctrine_Migration_Exception('Already at version # ' . $to); |
| 333 | } |
| 334 | |
| 335 | $direction = $from > $to ? 'down':'up'; |
| 336 | |
| 337 | if ($direction === 'up') { |
| 338 | for ($i = $from + 1; $i <= $to; $i++) { |
| 339 | $this->doMigrateStep($direction, $i); |
| 340 | } |
| 341 | } else { |
| 342 | for ($i = $from; $i > $to; $i--) { |
| 343 | $this->doMigrateStep($direction, $i); |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | $this->setCurrentVersion($to); |
| 348 | |
| 349 | return $to; |
| 350 | } |
| 351 | |
| 352 | /** |
| 353 | * addChange |
| 354 | * |
| 355 | * @param string $type |
| 356 | * @param string $array |
| 357 | * @return void |
| 358 | */ |
| 359 | protected function addChange($type, array $change = array()) |
| 360 | { |
| 361 | $this->_changes[$type][] = $change; |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * createTable |
| 366 | * |
| 367 | * @param string $tableName |
| 368 | * @param string $array |
| 369 | * @param string $array |
| 370 | * @return void |
| 371 | */ |
| 372 | public function createTable($tableName, array $fields = array(), array $options = array()) |
| 373 | { |
| 374 | $options = get_defined_vars(); |
| 375 | |
| 376 | $this->addChange('created_tables', $options); |
| 377 | } |
| 378 | |
| 379 | /** |
| 380 | * dropTable |
| 381 | * |
| 382 | * @param string $tableName |
| 383 | * @return void |
| 384 | */ |
| 385 | public function dropTable($tableName) |
| 386 | { |
| 387 | $options = get_defined_vars(); |
| 388 | |
| 389 | $this->addChange('dropped_tables', $options); |
| 390 | } |
| 391 | |
| 392 | /** |
| 393 | * renameTable |
| 394 | * |
| 395 | * @param string $oldTableName |
| 396 | * @param string $newTableName |
| 397 | * @return void |
| 398 | */ |
| 399 | public function renameTable($oldTableName, $newTableName) |
| 400 | { |
| 401 | $options = get_defined_vars(); |
| 402 | |
| 403 | $this->addChange('renamed_tables', $options); |
| 404 | } |
| 405 | |
| 406 | /** |
| 407 | * createConstraint |
| 408 | * |
| 409 | * @param string $tableName |
| 410 | * @param string $constraintName |
| 411 | * @return void |
| 412 | */ |
| 413 | public function createConstraint($tableName, $constraintName, array $definition) |
| 414 | { |
| 415 | $options = get_defined_vars(); |
| 416 | |
| 417 | $this->addChange('created_constraints', $options); |
| 418 | } |
| 419 | |
| 420 | /** |
| 421 | * dropConstraint |
| 422 | * |
| 423 | * @param string $tableName |
| 424 | * @param string $constraintName |
| 425 | * @return void |
| 426 | */ |
| 427 | public function dropConstraint($tableName, $constraintName, $primary = false) |
| 428 | { |
| 429 | $options = get_defined_vars(); |
| 430 | |
| 431 | $this->addChange('dropped_constraints', $options); |
| 432 | } |
| 433 | |
| 434 | /** |
| 435 | * createForeignKey |
| 436 | * |
| 437 | * @param string $tableName |
| 438 | * @param string $constraintName |
| 439 | * @return void |
| 440 | */ |
| 441 | public function createForeignKey($tableName, array $definition) |
| 442 | { |
| 443 | $options = get_defined_vars(); |
| 444 | |
| 445 | $this->addChange('created_fks', $options); |
| 446 | } |
| 447 | |
| 448 | /** |
| 449 | * dropForeignKey |
| 450 | * |
| 451 | * @param string $tableName |
| 452 | * @param string $constraintName |
| 453 | * @return void |
| 454 | */ |
| 455 | public function dropForeignKey($tableName, $fkName) |
| 456 | { |
| 457 | $options = get_defined_vars(); |
| 458 | |
| 459 | $this->addChange('dropped_fks', $options); |
| 460 | } |
| 461 | |
| 462 | /** |
| 463 | * addColumn |
| 464 | * |
| 465 | * @param string $tableName |
| 466 | * @param string $columnName |
| 467 | * @param string $type |
| 468 | * @param string $array |
| 469 | * @return void |
| 470 | */ |
| 471 | public function addColumn($tableName, $columnName, $type, array $options = array()) |
| 472 | { |
| 473 | $options = get_defined_vars(); |
| 474 | |
| 475 | $this->addChange('added_columns', $options); |
| 476 | } |
| 477 | |
| 478 | /** |
| 479 | * renameColumn |
| 480 | * |
| 481 | * @param string $tableName |
| 482 | * @param string $oldColumnName |
| 483 | * @param string $newColumnName |
| 484 | * @return void |
| 485 | */ |
| 486 | public function renameColumn($tableName, $oldColumnName, $newColumnName) |
| 487 | { |
| 488 | $options = get_defined_vars(); |
| 489 | |
| 490 | $this->addChange('renamed_columns', $options); |
| 491 | } |
| 492 | |
| 493 | /** |
| 494 | * renameColumn |
| 495 | * |
| 496 | * @param string $tableName |
| 497 | * @param string $columnName |
| 498 | * @param string $type |
| 499 | * @param string $array |
| 500 | * @return void |
| 501 | */ |
| 502 | public function changeColumn($tableName, $columnName, $type, array $options = array()) |
| 503 | { |
| 504 | $options = get_defined_vars(); |
| 505 | |
| 506 | $this->addChange('changed_columns', $options); |
| 507 | } |
| 508 | |
| 509 | /** |
| 510 | * removeColumn |
| 511 | * |
| 512 | * @param string $tableName |
| 513 | * @param string $columnName |
| 514 | * @return void |
| 515 | */ |
| 516 | public function removeColumn($tableName, $columnName) |
| 517 | { |
| 518 | $options = get_defined_vars(); |
| 519 | |
| 520 | $this->addChange('removed_columns', $options); |
| 521 | } |
| 522 | |
| 523 | /** |
| 524 | * addIndex |
| 525 | * |
| 526 | * @param string $tableName |
| 527 | * @param string $indexName |
| 528 | * @param string $array |
| 529 | * @return void |
| 530 | */ |
| 531 | public function addIndex($tableName, $indexName, array $definition) |
| 532 | { |
| 533 | $options = get_defined_vars(); |
| 534 | |
| 535 | $this->addChange('added_indexes', $options); |
| 536 | } |
| 537 | |
| 538 | /** |
| 539 | * removeIndex |
| 540 | * |
| 541 | * @param string $tableName |
| 542 | * @param string $indexName |
| 543 | * @return void |
| 544 | */ |
| 545 | public function removeIndex($tableName, $indexName) |
| 546 | { |
| 547 | $options = get_defined_vars(); |
| 548 | |
| 549 | $this->addChange('removed_indexes', $options); |
| 550 | } |
| 551 | } |