| 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 | * Doctrine_Migration |
| 23 | * |
| 24 | * this class represents a database view |
| 25 | * |
| 26 | * @package Doctrine |
| 27 | * @subpackage Migration |
| 28 | * @license http://www.opensource.org/licenses/lgpl-license.php LGPL |
| 29 | * @link www.phpdoctrine.com |
| 30 | * @since 1.0 |
| 31 | * @version $Revision: 1080 $ |
| 32 | * @author Jonathan H. Wage <jwage@mac.com> |
| 33 | */ |
| 34 | class Doctrine_Migration |
| 35 | { |
| 36 | protected $changes = array('created_tables' => array(), |
| 37 | 'dropped_tables' => array(), |
| 38 | 'renamed_tables' => array(), |
| 39 | 'added_columns' => array(), |
| 40 | 'renamed_columns' => array(), |
| 41 | 'changed_columns' => array(), |
| 42 | 'removed_columns' => array(), |
| 43 | 'added_indexes' => array(), |
| 44 | 'removed_indexes' => array()), |
| 45 | $migrationTableName = 'migration_version', |
| 46 | $migrationClassesDirectory = array(), |
| 47 | $migrationClasses = array(); |
| 48 | |
| 49 | /** |
| 50 | * construct |
| 51 | * |
| 52 | * Specify the path to the directory with the migration classes. |
| 53 | * The classes will be loaded and the migration table will be created if it does not already exist |
| 54 | * |
| 55 | * @param string $directory |
| 56 | * @return void |
| 57 | */ |
| 58 | public function __construct($directory = null) |
| 59 | { |
| 60 | if ($directory != null) { |
| 61 | $this->migrationClassesDirectory = $directory; |
| 62 | |
| 63 | $this->loadMigrationClasses(); |
| 64 | |
| 65 | $this->createMigrationTable(); |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * createMigrationTable |
| 71 | * |
| 72 | * Creates the migration table used to store the current version |
| 73 | * |
| 74 | * @return void |
| 75 | */ |
| 76 | protected function createMigrationTable() |
| 77 | { |
| 78 | $conn = Doctrine_Manager::connection(); |
| 79 | |
| 80 | try { |
| 81 | $conn->export->createTable($this->migrationTableName, array('version' => array('type' => 'integer', 'size' => 11))); |
| 82 | |
| 83 | return true; |
| 84 | } catch(Exception $e) { |
| 85 | return false; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * loadMigrationClasses |
| 91 | * |
| 92 | * Loads the migration classes for the directory specified by the constructor |
| 93 | * |
| 94 | * @return void |
| 95 | */ |
| 96 | protected function loadMigrationClasses() |
| 97 | { |
| 98 | if ($this->migrationClasses) { |
| 99 | return $this->migrationClasses; |
| 100 | } |
| 101 | |
| 102 | $directory = $this->migrationClassesDirectory; |
| 103 | |
| 104 | $classes = get_declared_classes(); |
| 105 | $loadedClasses = array(); |
| 106 | |
| 107 | if ($directory !== null) { |
| 108 | foreach ((array) $directory as $dir) { |
| 109 | $it = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir), |
| 110 | RecursiveIteratorIterator::LEAVES_ONLY); |
| 111 | |
| 112 | foreach ($it as $file) { |
| 113 | $e = explode('.', $file->getFileName()); |
| 114 | if (end($e) === 'php' && strpos($file->getFileName(), '.inc') === false) { |
| 115 | require_once $file->getPathName(); |
| 116 | $requiredClass = array_diff(get_declared_classes(), $classes); |
| 117 | $requiredClass = end($requiredClass); |
| 118 | |
| 119 | $loadedClasses[$requiredClass] = $file->getFileName(); |
| 120 | |
| 121 | } |
| 122 | } |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | $classes = $loadedClasses; |
| 127 | $parent = new ReflectionClass('Doctrine_Migration'); |
| 128 | $loadedClasses = array(); |
| 129 | |
| 130 | foreach ($classes as $name => $fileName) { |
| 131 | $class = new ReflectionClass($name); |
| 132 | |
| 133 | while ($class->isSubclassOf($parent)) { |
| 134 | |
| 135 | $class = $class->getParentClass(); |
| 136 | if ($class === false) { |
| 137 | break; |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | if ($class === false) { |
| 142 | continue; |
| 143 | } |
| 144 | |
| 145 | $e = explode('_', $fileName); |
| 146 | $classMigrationNum = (int) $e[0]; |
| 147 | |
| 148 | $loadedClasses[$classMigrationNum] = $fileName; |
| 149 | } |
| 150 | |
| 151 | $this->migrationClasses = $loadedClasses; |
| 152 | |
| 153 | return $this->migrationClasses; |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * getMigrationClasses |
| 158 | * |
| 159 | * @return void |
| 160 | * @author Jonathan H. Wage |
| 161 | */ |
| 162 | |
| 163 | public function getMigrationClasses() |
| 164 | { |
| 165 | return $this->migrationClasses; |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * setCurrentVersion |
| 170 | * |
| 171 | * Sets the current version in the migration table |
| 172 | * |
| 173 | * @param string $number |
| 174 | * @return void |
| 175 | */ |
| 176 | protected function setCurrentVersion($number) |
| 177 | { |
| 178 | $conn = Doctrine_Manager::connection(); |
| 179 | |
| 180 | if ($this->hasMigrated()) { |
| 181 | $conn->exec("UPDATE " . $this->migrationTableName . " SET version = $number"); |
| 182 | } else { |
| 183 | $conn->exec("INSERT INTO " . $this->migrationTableName . " (version) VALUES ($number)"); |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | /** |
| 188 | * getCurrentVersion |
| 189 | * |
| 190 | * Get the current version of the database |
| 191 | * |
| 192 | * @return void |
| 193 | */ |
| 194 | public function getCurrentVersion() |
| 195 | { |
| 196 | $conn = Doctrine_Manager::connection(); |
| 197 | |
| 198 | $result = $conn->fetchColumn("SELECT version FROM " . $this->migrationTableName); |
| 199 | |
| 200 | return isset($result[0]) ? $result[0]:0; |
| 201 | } |
| 202 | |
| 203 | /** |
| 204 | * hasMigrated |
| 205 | * |
| 206 | * Returns true/false for whether or not this database has been migrated in the past |
| 207 | * |
| 208 | * @return void |
| 209 | */ |
| 210 | public function hasMigrated() |
| 211 | { |
| 212 | $conn = Doctrine_Manager::connection(); |
| 213 | |
| 214 | $result = $conn->fetchColumn("SELECT version FROM " . $this->migrationTableName); |
| 215 | |
| 216 | return isset($result[0]) ? true:false; |
| 217 | } |
| 218 | |
| 219 | /** |
| 220 | * getLatestVersion |
| 221 | * |
| 222 | * Gets the latest possible version from the loaded migration classes |
| 223 | * |
| 224 | * @return void |
| 225 | */ |
| 226 | public function getLatestVersion() |
| 227 | { |
| 228 | $this->loadMigrationClasses(); |
| 229 | |
| 230 | $versions = array(); |
| 231 | foreach ($this->migrationClasses as $classMigrationNum => $fileName) { |
| 232 | $versions[$classMigrationNum] = $classMigrationNum; |
| 233 | } |
| 234 | |
| 235 | rsort($versions); |
| 236 | |
| 237 | return isset($versions[0]) ? $versions[0]:0; |
| 238 | } |
| 239 | |
| 240 | public function getNextVersion() |
| 241 | { |
| 242 | return $this->getLatestVersion() + 1; |
| 243 | } |
| 244 | |
| 245 | /** |
| 246 | * getMigrationClass |
| 247 | * |
| 248 | * Get instance of migration class for $num |
| 249 | * |
| 250 | * @param string $num |
| 251 | * @return void |
| 252 | */ |
| 253 | protected function getMigrationClass($num) |
| 254 | { |
| 255 | foreach ($this->migrationClasses as $classMigrationNum => $fileName) { |
| 256 | if ($classMigrationNum === $num) { |
| 257 | return new $className(); |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | throw new Doctrine_Migration_Exception('Could not find migration class for migration step: '.$num); |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * doMigrateStep |
| 266 | * |
| 267 | * Perform migration directory for the specified version. Loads migration classes and performs the migration then processes the changes |
| 268 | * |
| 269 | * @param string $direction |
| 270 | * @param string $num |
| 271 | * @return void |
| 272 | */ |
| 273 | protected function doMigrateStep($direction, $num) |
| 274 | { |
| 275 | $migrate = $this->getMigrationClass($num); |
| 276 | $migrate->doMigrate($direction); |
| 277 | } |
| 278 | |
| 279 | /** |
| 280 | * doMigrate |
| 281 | * |
| 282 | * Perform migration for a migration class. Executes the up or down method then processes the changes |
| 283 | * |
| 284 | * @param string $direction |
| 285 | * @return void |
| 286 | */ |
| 287 | protected function doMigrate($direction) |
| 288 | { |
| 289 | if (method_exists($this, $direction)) { |
| 290 | $this->$direction(); |
| 291 | |
| 292 | foreach ($this->changes as $type => $changes) { |
| 293 | $process = new Doctrine_Migration_Process(); |
| 294 | $funcName = 'process' . Doctrine::classify($type); |
| 295 | |
| 296 | if (!empty($changes)) { |
| 297 | $process->$funcName($changes); |
| 298 | } |
| 299 | } |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | /** |
| 304 | * migrate |
| 305 | * |
| 306 | * Perform a migration chain by specifying the $from and $to. |
| 307 | * If you do not specify a $from or $to then it will attempt to migrate from the current version to the latest version |
| 308 | * |
| 309 | * @param string $from |
| 310 | * @param string $to |
| 311 | * @return void |
| 312 | */ |
| 313 | public function migrate($to = null) |
| 314 | { |
| 315 | $from = $this->getCurrentVersion(); |
| 316 | |
| 317 | // If nothing specified then lets assume we are migrating from the current version to the latest version |
| 318 | if ($to === null) { |
| 319 | $to = $this->getLatestVersion(); |
| 320 | } |
| 321 | |
| 322 | if ($from === $to) { |
| 323 | throw new Doctrine_Migration_Exception('Already up-to-date'); |
| 324 | } |
| 325 | |
| 326 | $direction = $from > $to ? 'down':'up'; |
| 327 | |
| 328 | if ($direction === 'up') { |
| 329 | for ($i = $from + 1; $i <= $to; $i++) { |
| 330 | $this->doMigrateStep($direction, $i); |
| 331 | } |
| 332 | } else { |
| 333 | for ($i = $from; $i > $to; $i--) { |
| 334 | $this->doMigrateStep($direction, $i); |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | $this->setCurrentVersion($to); |
| 339 | } |
| 340 | |
| 341 | /** |
| 342 | * addChange |
| 343 | * |
| 344 | * @param string $type |
| 345 | * @param string $array |
| 346 | * @return void |
| 347 | */ |
| 348 | protected function addChange($type, array $change = array()) |
| 349 | { |
| 350 | $this->changes[$type][] = $change; |
| 351 | } |
| 352 | |
| 353 | /** |
| 354 | * createTable |
| 355 | * |
| 356 | * @param string $tableName |
| 357 | * @param string $array |
| 358 | * @param string $array |
| 359 | * @return void |
| 360 | */ |
| 361 | public function createTable($tableName, array $fields = array(), array $options = array()) |
| 362 | { |
| 363 | $options = get_defined_vars(); |
| 364 | |
| 365 | $this->addChange('created_tables', $options); |
| 366 | } |
| 367 | |
| 368 | /** |
| 369 | * dropTable |
| 370 | * |
| 371 | * @param string $tableName |
| 372 | * @return void |
| 373 | */ |
| 374 | public function dropTable($tableName) |
| 375 | { |
| 376 | $options = get_defined_vars(); |
| 377 | |
| 378 | $this->addChange('dropped_tables', $options); |
| 379 | } |
| 380 | |
| 381 | /** |
| 382 | * renameTable |
| 383 | * |
| 384 | * @param string $oldTableName |
| 385 | * @param string $newTableName |
| 386 | * @return void |
| 387 | */ |
| 388 | public function renameTable($oldTableName, $newTableName) |
| 389 | { |
| 390 | $options = get_defined_vars(); |
| 391 | |
| 392 | $this->addChange('renamed_tables', $options); |
| 393 | } |
| 394 | |
| 395 | /** |
| 396 | * addColumn |
| 397 | * |
| 398 | * @param string $tableName |
| 399 | * @param string $columnName |
| 400 | * @param string $type |
| 401 | * @param string $array |
| 402 | * @return void |
| 403 | */ |
| 404 | public function addColumn($tableName, $columnName, $type, array $options = array()) |
| 405 | { |
| 406 | $options = get_defined_vars(); |
| 407 | |
| 408 | $this->addChange('added_columns', $options); |
| 409 | } |
| 410 | |
| 411 | /** |
| 412 | * renameColumn |
| 413 | * |
| 414 | * @param string $tableName |
| 415 | * @param string $oldColumnName |
| 416 | * @param string $newColumnName |
| 417 | * @return void |
| 418 | */ |
| 419 | public function renameColumn($tableName, $oldColumnName, $newColumnName) |
| 420 | { |
| 421 | $options = get_defined_vars(); |
| 422 | |
| 423 | $this->addChange('renamed_columns', $options); |
| 424 | } |
| 425 | |
| 426 | /** |
| 427 | * renameColumn |
| 428 | * |
| 429 | * @param string $tableName |
| 430 | * @param string $columnName |
| 431 | * @param string $type |
| 432 | * @param string $array |
| 433 | * @return void |
| 434 | */ |
| 435 | public function changeColumn($tableName, $columnName, $type, array $options = array()) |
| 436 | { |
| 437 | $options = get_defined_vars(); |
| 438 | |
| 439 | $this->addChange('changed_columns', $options); |
| 440 | } |
| 441 | |
| 442 | /** |
| 443 | * removeColumn |
| 444 | * |
| 445 | * @param string $tableName |
| 446 | * @param string $columnName |
| 447 | * @return void |
| 448 | */ |
| 449 | public function removeColumn($tableName, $columnName) |
| 450 | { |
| 451 | $options = get_defined_vars(); |
| 452 | |
| 453 | $this->addChange('removed_columns', $options); |
| 454 | } |
| 455 | |
| 456 | /** |
| 457 | * addIndex |
| 458 | * |
| 459 | * @param string $tableName |
| 460 | * @param string $indexName |
| 461 | * @param string $array |
| 462 | * @return void |
| 463 | */ |
| 464 | public function addIndex($tableName, $indexName, array $options = array()) |
| 465 | { |
| 466 | $options = get_defined_vars(); |
| 467 | |
| 468 | $this->addChange('added_indexes', $options); |
| 469 | } |
| 470 | |
| 471 | /** |
| 472 | * removeIndex |
| 473 | * |
| 474 | * @param string $tableName |
| 475 | * @param string $indexName |
| 476 | * @return void |
| 477 | */ |
| 478 | public function removeIndex($tableName, $indexName) |
| 479 | { |
| 480 | $options = get_defined_vars(); |
| 481 | |
| 482 | $this->addChange('removed_indexes', $options); |
| 483 | } |
| 484 | } |