| 1 | <?php |
| 2 | /* |
| 3 | * $Id: Query.php 3221 2007-11-25 15:57:08Z romanb $ |
| 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.org>. |
| 20 | */ |
| 21 | Doctrine::autoload('Doctrine_Query_Abstract'); |
| 22 | /** |
| 23 | * Doctrine_Query |
| 24 | * A Doctrine_Query object represents a DQL query. It is used to query databases for |
| 25 | * data in an object-oriented fashion. A DQL query understands relations and inheritance |
| 26 | * and is dbms independant. |
| 27 | * |
| 28 | * @package Doctrine |
| 29 | * @subpackage Query |
| 30 | * @license http://www.opensource.org/licenses/lgpl-license.php LGPL |
| 31 | * @link www.phpdoctrine.org |
| 32 | * @since 1.0 |
| 33 | * @version $Revision: 3221 $ |
| 34 | * @author Konsta Vesterinen <kvesteri@cc.hut.fi> |
| 35 | * @todo Proposal: This class does far too much. It should have only 1 task: Collecting |
| 36 | * the DQL query parts and the query parameters (the query state and caching options/methods |
| 37 | * can remain here, too). |
| 38 | * The actual SQL construction could be done by a separate object (Doctrine_Query_SqlBuilder?) |
| 39 | * whose task it is to convert DQL into SQL. |
| 40 | * Furthermore the SqlBuilder? can then use other objects (Doctrine_Query_Tokenizer?), |
| 41 | * (Doctrine_Query_Parser(s)?) to accomplish his work. Doctrine_Query does not need |
| 42 | * to know the tokenizer/parsers. There could be extending |
| 43 | * implementations of SqlBuilder? that cover the specific SQL dialects. |
| 44 | * This would release Doctrine_Connection and the Doctrine_Connection_xxx classes |
| 45 | * from this tedious task. |
| 46 | * This would also largely reduce the currently huge interface of Doctrine_Query(_Abstract) |
| 47 | * and better hide all these transformation internals from the public Query API. |
| 48 | * |
| 49 | * @internal The lifecycle of a Query object is the following: |
| 50 | * After construction the query object is empty. Through using the fluent |
| 51 | * query interface the user fills the query object with DQL parts and query parameters. |
| 52 | * These get collected in {@link $_dqlParts} and {@link $_params}, respectively. |
| 53 | * When the query is executed the first time, or when {@link getSqlQuery()} |
| 54 | * is called the first time, the collected DQL parts get parsed and the resulting |
| 55 | * connection-driver specific SQL is generated. The generated SQL parts are |
| 56 | * stored in {@link $_sqlParts} and the final resulting SQL query is stored in |
| 57 | * {@link $_sql}. |
| 58 | */ |
| 59 | class Doctrine_Query extends Doctrine_Query_Abstract implements Countable, Serializable |
| 60 | { |
| 61 | /** |
| 62 | * @var array The DQL keywords. |
| 63 | */ |
| 64 | protected static $_keywords = array('ALL', |
| 65 | 'AND', |
| 66 | 'ANY', |
| 67 | 'AS', |
| 68 | 'ASC', |
| 69 | 'AVG', |
| 70 | 'BETWEEN', |
| 71 | 'BIT_LENGTH', |
| 72 | 'BY', |
| 73 | 'CHARACTER_LENGTH', |
| 74 | 'CHAR_LENGTH', |
| 75 | 'CURRENT_DATE', |
| 76 | 'CURRENT_TIME', |
| 77 | 'CURRENT_TIMESTAMP', |
| 78 | 'DELETE', |
| 79 | 'DESC', |
| 80 | 'DISTINCT', |
| 81 | 'EMPTY', |
| 82 | 'EXISTS', |
| 83 | 'FALSE', |
| 84 | 'FETCH', |
| 85 | 'FROM', |
| 86 | 'GROUP', |
| 87 | 'HAVING', |
| 88 | 'IN', |
| 89 | 'INDEXBY', |
| 90 | 'INNER', |
| 91 | 'IS', |
| 92 | 'JOIN', |
| 93 | 'LEFT', |
| 94 | 'LIKE', |
| 95 | 'LOWER', |
| 96 | 'MEMBER', |
| 97 | 'MOD', |
| 98 | 'NEW', |
| 99 | 'NOT', |
| 100 | 'NULL', |
| 101 | 'OBJECT', |
| 102 | 'OF', |
| 103 | 'OR', |
| 104 | 'ORDER', |
| 105 | 'OUTER', |
| 106 | 'POSITION', |
| 107 | 'SELECT', |
| 108 | 'SOME', |
| 109 | 'TRIM', |
| 110 | 'TRUE', |
| 111 | 'UNKNOWN', |
| 112 | 'UPDATE', |
| 113 | 'WHERE'); |
| 114 | |
| 115 | /** |
| 116 | * @var array |
| 117 | */ |
| 118 | protected $_subqueryAliases = array(); |
| 119 | |
| 120 | /** |
| 121 | * @var array $_aggregateAliasMap an array containing all aggregate aliases, keys as dql aliases |
| 122 | * and values as sql aliases |
| 123 | */ |
| 124 | protected $_aggregateAliasMap = array(); |
| 125 | |
| 126 | /** |
| 127 | * @var array |
| 128 | */ |
| 129 | protected $_pendingAggregates = array(); |
| 130 | |
| 131 | /** |
| 132 | * @param boolean $needsSubquery |
| 133 | */ |
| 134 | protected $_needsSubquery = false; |
| 135 | |
| 136 | /** |
| 137 | * @param boolean $isSubquery whether or not this query object is a subquery of another |
| 138 | * query object |
| 139 | */ |
| 140 | protected $_isSubquery; |
| 141 | |
| 142 | /** |
| 143 | * @var array $_neededTables an array containing the needed table aliases |
| 144 | */ |
| 145 | protected $_neededTables = array(); |
| 146 | |
| 147 | /** |
| 148 | * @var array $pendingSubqueries SELECT part subqueries, these are called pending subqueries since |
| 149 | * they cannot be parsed directly (some queries might be correlated) |
| 150 | */ |
| 151 | protected $_pendingSubqueries = array(); |
| 152 | |
| 153 | /** |
| 154 | * @var array $_pendingFields an array of pending fields (fields waiting to be parsed) |
| 155 | */ |
| 156 | protected $_pendingFields = array(); |
| 157 | |
| 158 | /** |
| 159 | * @var array $_parsers an array of parser objects, each DQL query part has its own parser |
| 160 | */ |
| 161 | protected $_parsers = array(); |
| 162 | |
| 163 | /** |
| 164 | * @var array $_pendingJoinConditions an array containing pending joins |
| 165 | */ |
| 166 | protected $_pendingJoinConditions = array(); |
| 167 | |
| 168 | /** |
| 169 | * @var array |
| 170 | */ |
| 171 | protected $_expressionMap = array(); |
| 172 | |
| 173 | /** |
| 174 | * @var string $_sql cached SQL query |
| 175 | */ |
| 176 | protected $_sql; |
| 177 | |
| 178 | |
| 179 | /** |
| 180 | * create |
| 181 | * returns a new Doctrine_Query object |
| 182 | * |
| 183 | * @param Doctrine_Connection $conn optional connection parameter |
| 184 | * @return Doctrine_Query |
| 185 | */ |
| 186 | public static function create($conn = null) |
| 187 | { |
| 188 | return new Doctrine_Query($conn); |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * Resets the query to the state just after it has been instantiated. |
| 193 | */ |
| 194 | public function reset() |
| 195 | { |
| 196 | $this->_pendingJoinConditions = array(); |
| 197 | $this->_pendingSubqueries = array(); |
| 198 | $this->_pendingFields = array(); |
| 199 | $this->_neededTables = array(); |
| 200 | $this->_expressionMap = array(); |
| 201 | $this->_subqueryAliases = array(); |
| 202 | $this->_needsSubquery = false; |
| 203 | $this->_isLimitSubqueryUsed = false; |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * createSubquery |
| 208 | * creates a subquery |
| 209 | * |
| 210 | * @return Doctrine_Hydrate |
| 211 | */ |
| 212 | public function createSubquery() |
| 213 | { |
| 214 | $class = get_class($this); |
| 215 | $obj = new $class(); |
| 216 | |
| 217 | // copy the aliases to the subquery |
| 218 | $obj->copyAliases($this); |
| 219 | |
| 220 | // this prevents the 'id' being selected, re ticket #307 |
| 221 | $obj->isSubquery(true); |
| 222 | |
| 223 | return $obj; |
| 224 | } |
| 225 | |
| 226 | /** |
| 227 | * _addPendingJoinCondition |
| 228 | * |
| 229 | * @param string $componentAlias component alias |
| 230 | * @param string $joinCondition dql join condition |
| 231 | * @return Doctrine_Query this object |
| 232 | */ |
| 233 | protected function _addPendingJoinCondition($componentAlias, $joinCondition) |
| 234 | { |
| 235 | $this->_pendingJoins[$componentAlias] = $joinCondition; |
| 236 | } |
| 237 | |
| 238 | /** |
| 239 | * addEnumParam |
| 240 | * sets input parameter as an enumerated parameter |
| 241 | * |
| 242 | * @param string $key the key of the input parameter |
| 243 | * @return Doctrine_Query |
| 244 | */ |
| 245 | public function addEnumParam($key, $table = null, $column = null) |
| 246 | { |
| 247 | $array = (isset($table) || isset($column)) ? array($table, $column) : array(); |
| 248 | |
| 249 | if ($key === '?') { |
| 250 | $this->_enumParams[] = $array; |
| 251 | } else { |
| 252 | $this->_enumParams[$key] = $array; |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | /** |
| 257 | * getEnumParams |
| 258 | * get all enumerated parameters |
| 259 | * |
| 260 | * @return array all enumerated parameters |
| 261 | */ |
| 262 | public function getEnumParams() |
| 263 | { |
| 264 | return $this->_enumParams; |
| 265 | } |
| 266 | |
| 267 | /** |
| 268 | * getDql |
| 269 | * returns the DQL query that is represented by this query object. |
| 270 | * |
| 271 | * the query is built from $_dqlParts |
| 272 | * |
| 273 | * @return string the DQL query |
| 274 | */ |
| 275 | public function getDql() |
| 276 | { |
| 277 | $q = ''; |
| 278 | $q .= ( ! empty($this->_dqlParts['select']))? 'SELECT ' . implode(', ', $this->_dqlParts['select']) : ''; |
| 279 | $q .= ( ! empty($this->_dqlParts['from']))? ' FROM ' . implode(' ', $this->_dqlParts['from']) : ''; |
| 280 | $q .= ( ! empty($this->_dqlParts['where']))? ' WHERE ' . implode(' AND ', $this->_dqlParts['where']) : ''; |
| 281 | $q .= ( ! empty($this->_dqlParts['groupby']))? ' GROUP BY ' . implode(', ', $this->_dqlParts['groupby']) : ''; |
| 282 | $q .= ( ! empty($this->_dqlParts['having']))? ' HAVING ' . implode(' AND ', $this->_dqlParts['having']) : ''; |
| 283 | $q .= ( ! empty($this->_dqlParts['orderby']))? ' ORDER BY ' . implode(', ', $this->_dqlParts['orderby']) : ''; |
| 284 | $q .= ( ! empty($this->_dqlParts['limit']))? ' LIMIT ' . implode(' ', $this->_dqlParts['limit']) : ''; |
| 285 | $q .= ( ! empty($this->_dqlParts['offset']))? ' OFFSET ' . implode(' ', $this->_dqlParts['offset']) : ''; |
| 286 | |
| 287 | return $q; |
| 288 | } |
| 289 | |
| 290 | /** |
| 291 | * getParams |
| 292 | * |
| 293 | * @return array |
| 294 | */ |
| 295 | public function getParams() |
| 296 | { |
| 297 | return array_merge($this->_params['set'], $this->_params['where'], $this->_params['having']); |
| 298 | } |
| 299 | |
| 300 | /** |
| 301 | * setParams |
| 302 | * |
| 303 | * @param array $params |
| 304 | */ |
| 305 | public function setParams(array $params = array()) { |
| 306 | $this->_params = $params; |
| 307 | } |
| 308 | |
| 309 | /** |
| 310 | * fetchArray |
| 311 | * Convenience method to execute using array fetching as hydration mode. |
| 312 | * |
| 313 | * @param string $params |
| 314 | * @return array |
| 315 | */ |
| 316 | public function fetchArray($params = array()) { |
| 317 | return $this->execute($params, Doctrine::HYDRATE_ARRAY); |
| 318 | } |
| 319 | |
| 320 | /** |
| 321 | * fetchOne |
| 322 | * Convenience method to execute the query and return the first item |
| 323 | * of the collection. |
| 324 | * |
| 325 | * @param string $params Parameters |
| 326 | * @param int $hydrationMode Hydration mode |
| 327 | * @return mixed Array or Doctrine_Collection or false if no result. |
| 328 | */ |
| 329 | public function fetchOne($params = array(), $hydrationMode = null) |
| 330 | { |
| 331 | $collection = $this->execute($params, $hydrationMode); |
| 332 | |
| 333 | if (count($collection) === 0) { |
| 334 | return false; |
| 335 | } |
| 336 | |
| 337 | if ($collection instanceof Doctrine_Collection) { |
| 338 | return $collection->getFirst(); |
| 339 | } else if (is_array($collection)) { |
| 340 | return array_shift($collection); |
| 341 | } |
| 342 | |
| 343 | return false; |
| 344 | } |
| 345 | |
| 346 | /** |
| 347 | * isSubquery |
| 348 | * if $bool parameter is set this method sets the value of |
| 349 | * Doctrine_Query::$isSubquery. If this value is set to true |
| 350 | * the query object will not load the primary key fields of the selected |
| 351 | * components. |
| 352 | * |
| 353 | * If null is given as the first parameter this method retrieves the current |
| 354 | * value of Doctrine_Query::$isSubquery. |
| 355 | * |
| 356 | * @param boolean $bool whether or not this query acts as a subquery |
| 357 | * @return Doctrine_Query|bool |
| 358 | */ |
| 359 | public function isSubquery($bool = null) |
| 360 | { |
| 361 | if ($bool === null) { |
| 362 | return $this->_isSubquery; |
| 363 | } |
| 364 | |
| 365 | $this->_isSubquery = (bool) $bool; |
| 366 | return $this; |
| 367 | } |
| 368 | |
| 369 | /** |
| 370 | * getAggregateAlias |
| 371 | * |
| 372 | * @param string $dqlAlias the dql alias of an aggregate value |
| 373 | * @return string |
| 374 | * @deprecated |
| 375 | */ |
| 376 | public function getAggregateAlias($dqlAlias) |
| 377 | { |
| 378 | return $this->getSqlAggregateAlias($dqlAlias); |
| 379 | } |
| 380 | |
| 381 | /** |
| 382 | * getSqlAggregateAlias |
| 383 | * |
| 384 | * @param string $dqlAlias the dql alias of an aggregate value |
| 385 | * @return string |
| 386 | */ |
| 387 | public function getSqlAggregateAlias($dqlAlias) |
| 388 | { |
| 389 | if (isset($this->_aggregateAliasMap[$dqlAlias])) { |
| 390 | // mark the expression as used |
| 391 | $this->_expressionMap[$dqlAlias][1] = true; |
| 392 | |
| 393 | return $this->_aggregateAliasMap[$dqlAlias]; |
| 394 | } else if ( ! empty($this->_pendingAggregates)) { |
| 395 | $this->processPendingAggregates(); |
| 396 | |
| 397 | return $this->getSqlAggregateAlias($dqlAlias); |
| 398 | } else { |
| 399 | throw new Doctrine_Query_Exception('Unknown aggregate alias: ' . $dqlAlias); |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | /** |
| 404 | * parseQueryPart |
| 405 | * parses given DQL query part |
| 406 | * |
| 407 | * @param string $queryPartName the name of the query part |
| 408 | * @param string $queryPart query part to be parsed |
| 409 | * @param boolean $append whether or not to append the query part to its stack |
| 410 | * if false is given, this method will overwrite |
| 411 | * the given query part stack with $queryPart |
| 412 | * @return Doctrine_Query this object |
| 413 | */ |
| 414 | /*protected function parseQueryPart($queryPartName, $queryPart, $append = false) |
| 415 | { |
| 416 | if ($this->_state === self::STATE_LOCKED) { |
| 417 | throw new Doctrine_Query_Exception('This query object is locked. No query parts can be manipulated.'); |
| 418 | } |
| 419 | |
| 420 | // sanity check |
| 421 | if ($queryPart === '' || $queryPart === null) { |
| 422 | throw new Doctrine_Query_Exception('Empty ' . $queryPartName . ' part given.'); |
| 423 | } |
| 424 | |
| 425 | // add query part to the dql part array |
| 426 | if ($append) { |
| 427 | $this->_dqlParts[$queryPartName][] = $queryPart; |
| 428 | } else { |
| 429 | $this->_dqlParts[$queryPartName] = array($queryPart); |
| 430 | } |
| 431 | |
| 432 | if ($this->_state === self::STATE_DIRECT) { |
| 433 | $parser = $this->_getParser($queryPartName); |
| 434 | |
| 435 | $sql = $parser->parse($queryPart); |
| 436 | |
| 437 | if (isset($sql)) { |
| 438 | if ($append) { |
| 439 | $this->addSqlQueryPart($queryPartName, $sql); |
| 440 | } else { |
| 441 | $this->setSqlQueryPart($queryPartName, $sql); |
| 442 | } |
| 443 | } |
| 444 | } |
| 445 | |
| 446 | $this->_state = Doctrine_Query::STATE_DIRTY; |
| 447 | |
| 448 | return $this; |
| 449 | }*/ |
| 450 | |
| 451 | /** |
| 452 | * getDqlPart |
| 453 | * returns a specific DQL query part. |
| 454 | * |
| 455 | * @param string $queryPart the name of the query part |
| 456 | * @return string the DQL query part |
| 457 | * @todo Description: List which query parts exist or point to the method/property |
| 458 | * where they are listed. |
| 459 | */ |
| 460 | public function getDqlPart($queryPart) |
| 461 | { |
| 462 | if ( ! isset($this->_dqlParts[$queryPart])) { |
| 463 | throw new Doctrine_Query_Exception('Unknown query part ' . $queryPart); |
| 464 | } |
| 465 | |
| 466 | return $this->_dqlParts[$queryPart]; |
| 467 | } |
| 468 | |
| 469 | /** |
| 470 | * processPendingFields |
| 471 | * the fields in SELECT clause cannot be parsed until the components |
| 472 | * in FROM clause are parsed, hence this method is called everytime a |
| 473 | * specific component is being parsed. |
| 474 | * |
| 475 | * @throws Doctrine_Query_Exception if unknown component alias has been given |
| 476 | * @param string $componentAlias the alias of the component |
| 477 | * @return void |
| 478 | * @todo Description: What is a 'pending field' (and are there non-pending fields, too)? |
| 479 | * What is 'processed'? (Meaning: What information is gathered & stored away) |
| 480 | */ |
| 481 | public function processPendingFields($componentAlias) |
| 482 | { |
| 483 | $tableAlias = $this->getTableAlias($componentAlias); |
| 484 | $table = $this->_queryComponents[$componentAlias]['table']; |
| 485 | |
| 486 | if ( ! isset($this->_pendingFields[$componentAlias])) { |
| 487 | return; |
| 488 | } |
| 489 | |
| 490 | $fields = $this->_pendingFields[$componentAlias]; |
| 491 | |
| 492 | |
| 493 | // check for wildcards |
| 494 | if (in_array('*', $fields)) { |
| 495 | //echo "<br />";Doctrine::dump($table->getColumnNames()); echo "<br />"; |
| 496 | $fields = $table->getFieldNames(); |
| 497 | } else { |
| 498 | // only auto-add the primary key fields if this query object is not |
| 499 | // a subquery of another query object |
| 500 | if ( ! $this->_isSubquery) { |
| 501 | $fields = array_unique(array_merge((array) $table->getIdentifier(), $fields)); |
| 502 | } |
| 503 | } |
| 504 | |
| 505 | $sql = array(); |
| 506 | foreach ($fields as $fieldName) { |
| 507 | $columnName = $table->getColumnName($fieldName); |
| 508 | if (($owner = $table->getColumnOwner($columnName)) !== null && |
| 509 | $owner !== $table->getComponentName()) { |
| 510 | |
| 511 | $parent = $this->_conn->getTable($owner); |
| 512 | $columnName = $parent->getColumnName($fieldName); |
| 513 | $parentAlias = $this->getTableAlias($componentAlias . '.' . $parent->getComponentName()); |
| 514 | $sql[] = $this->_conn->quoteIdentifier($parentAlias . '.' . $columnName) |
| 515 | . ' AS ' |
| 516 | . $this->_conn->quoteIdentifier($tableAlias . '__' . $columnName); |
| 517 | } else { |
| 518 | $columnName = $table->getColumnName($fieldName); |
| 519 | $sql[] = $this->_conn->quoteIdentifier($tableAlias . '.' . $columnName) |
| 520 | . ' AS ' |
| 521 | . $this->_conn->quoteIdentifier($tableAlias . '__' . $columnName); |
| 522 | } |
| 523 | } |
| 524 | |
| 525 | $this->_neededTables[] = $tableAlias; |
| 526 | //Doctrine::dump(implode(', ', $sql)); |
| 527 | //echo "<br /><br />"; |
| 528 | return implode(', ', $sql); |
| 529 | } |
| 530 | |
| 531 | /** |
| 532 | * parseSelectField |
| 533 | * |
| 534 | * @throws Doctrine_Query_Exception if unknown component alias has been given |
| 535 | * @return void |
| 536 | * @todo Description: Explain what this method does. Is there a relation to parseSelect()? |
| 537 | * (It doesnt seem to get called from there...?). In what circumstances is this method |
| 538 | * used? |
| 539 | */ |
| 540 | public function parseSelectField($field) |
| 541 | { |
| 542 | $terms = explode('.', $field); |
| 543 | |
| 544 | if (isset($terms[1])) { |
| 545 | $componentAlias = $terms[0]; |
| 546 | $field = $terms[1]; |
| 547 | } else { |
| 548 | reset($this->_queryComponents); |
| 549 | $componentAlias = key($this->_queryComponents); |
| 550 | $fields = $terms[0]; |
| 551 | } |
| 552 | |
| 553 | $tableAlias = $this->getTableAlias($componentAlias); |
| 554 | $table = $this->_queryComponents[$componentAlias]['table']; |
| 555 | |
| 556 | |
| 557 | // check for wildcards |
| 558 | if ($field === '*') { |
| 559 | $sql = array(); |
| 560 | |
| 561 | foreach ($table->getColumnNames() as $field) { |
| 562 | $sql[] = $this->parseSelectField($componentAlias . '.' . $field); |
| 563 | } |
| 564 | |
| 565 | return implode(', ', $sql); |
| 566 | } else { |
| 567 | $name = $table->getColumnName($field); |
| 568 | |
| 569 | $this->_neededTables[] = $tableAlias; |
| 570 | |
| 571 | return $this->_conn->quoteIdentifier($tableAlias . '.' . $name) |
| 572 | . ' AS ' |
| 573 | . $this->_conn->quoteIdentifier($tableAlias . '__' . $name); |
| 574 | } |
| 575 | } |
| 576 | |
| 577 | /** |
| 578 | * getExpressionOwner |
| 579 | * returns the component alias for owner of given expression |
| 580 | * |
| 581 | * @param string $expr expression from which to get to owner from |
| 582 | * @return string the component alias |
| 583 | * @todo Description: What does it mean if a component is an 'owner' of an expression? |
| 584 | * What kind of 'expression' are we talking about here? |
| 585 | */ |
| 586 | public function getExpressionOwner($expr) |
| 587 | { |
| 588 | if (strtoupper(substr(trim($expr, '( '), 0, 6)) !== 'SELECT') { |
| 589 | preg_match_all("/[a-z0-9_]+\.[a-z0-9_]+[\.[a-z0-9]+]*/i", $expr, $matches); |
| 590 | |
| 591 | $match = current($matches); |
| 592 | |
| 593 | if (isset($match[0])) { |
| 594 | $terms = explode('.', $match[0]); |
| 595 | |
| 596 | return $terms[0]; |
| 597 | } |
| 598 | } |
| 599 | return $this->getRootAlias(); |
| 600 | |
| 601 | } |
| 602 | |
| 603 | /** |
| 604 | * parseSelect |
| 605 | * parses the query select part and |
| 606 | * adds selected fields to pendingFields array |
| 607 | * |
| 608 | * @param string $dql |
| 609 | * @todo Description: What information is extracted (and then stored)? |
| 610 | */ |
| 611 | public function parseSelect($dql) |
| 612 | { |
| 613 | $refs = $this->_tokenizer->sqlExplode($dql, ','); |
| 614 | |
| 615 | $pos = strpos(trim($refs[0]), ' '); |
| 616 | $first = substr($refs[0], 0, $pos); |
| 617 | |
| 618 | // check for DISTINCT keyword |
| 619 | if ($first === 'DISTINCT') { |
| 620 | $this->_sqlParts['distinct'] = true; |
| 621 | |
| 622 | $refs[0] = substr($refs[0], ++$pos); |
| 623 | } |
| 624 | |
| 625 | $parsedComponents = array(); |
| 626 | |
| 627 | foreach ($refs as $reference) { |
| 628 | $reference = trim($reference); |
| 629 | |
| 630 | if (empty($reference)) { |
| 631 | continue; |
| 632 | } |
| 633 | |
| 634 | $terms = $this->_tokenizer->sqlExplode($reference, ' '); |
| 635 | |
| 636 | $pos = strpos($terms[0], '('); |
| 637 | |
| 638 | if (count($terms) > 1 || $pos !== false) { |
| 639 | $expression = array_shift($terms); |
| 640 | $alias = array_pop($terms); |
| 641 | |
| 642 | if ( ! $alias) { |
| 643 | $alias = substr($expression, 0, $pos); |
| 644 | } |
| 645 | |
| 646 | $componentAlias = $this->getExpressionOwner($expression); |
| 647 | $expression = $this->parseClause($expression); |
| 648 | |
| 649 | $tableAlias = $this->getTableAlias($componentAlias); |
| 650 | |
| 651 | $index = count($this->_aggregateAliasMap); |
| 652 | |
| 653 | $sqlAlias = $this->_conn->quoteIdentifier($tableAlias . '__' . $index); |
| 654 | |
| 655 | $this->_sqlParts['select'][] = $expression . ' AS ' . $sqlAlias; |
| 656 | |
| 657 | $this->_aggregateAliasMap[$alias] = $sqlAlias; |
| 658 | $this->_expressionMap[$alias][0] = $expression; |
| 659 | |
| 660 | $this->_queryComponents[$componentAlias]['agg'][$index] = $alias; |
| 661 | |
| 662 | $this->_neededTables[] = $tableAlias; |
| 663 | } else { |
| 664 | $e = explode('.', $terms[0]); |
| 665 | |
| 666 | if (isset($e[1])) { |
| 667 | $componentAlias = $e[0]; |
| 668 | $field = $e[1]; |
| 669 | } else { |
| 670 | reset($this->_queryComponents); |
| 671 | $componentAlias = key($this->_queryComponents); |
| 672 | $field = $e[0]; |
| 673 | } |
| 674 | |
| 675 | $this->_pendingFields[$componentAlias][] = $field; |
| 676 | } |
| 677 | } |
| 678 | } |
| 679 | |
| 680 | /** |
| 681 | * parseClause |
| 682 | * parses given DQL clause |
| 683 | * |
| 684 | * this method handles five tasks: |
| 685 | * |
| 686 | * 1. Converts all DQL functions to their native SQL equivalents |
| 687 | * 2. Converts all component references to their table alias equivalents |
| 688 | * 3. Converts all field names to actual column names |
| 689 | * 4. Quotes all identifiers |
| 690 | * 5. Parses nested clauses and subqueries recursively |
| 691 | * |
| 692 | * @return string SQL string |
| 693 | * @todo Description: What is a 'dql clause' (and what not)? |
| 694 | * Refactor: Too long & nesting level |
| 695 | */ |
| 696 | public function parseClause($clause) |
| 697 | { |
| 698 | $clause = trim($clause); |
| 699 | |
| 700 | if (is_numeric($clause)) { |
| 701 | return $clause; |
| 702 | } |
| 703 | |
| 704 | $terms = $this->_tokenizer->clauseExplode($clause, array(' ', '+', '-', '*', '/')); |
| 705 | |
| 706 | $str = ''; |
| 707 | foreach ($terms as $term) { |
| 708 | $pos = strpos($term[0], '('); |
| 709 | |
| 710 | if ($pos !== false) { |
| 711 | $name = substr($term[0], 0, $pos); |
| 712 | if ($name !== '') { |
| 713 | $argStr = substr($term[0], ($pos + 1), -1); |
| 714 | |
| 715 | $args = array(); |
| 716 | // parse args |
| 717 | |
| 718 | foreach ($this->_tokenizer->sqlExplode($argStr, ',') as $expr) { |
| 719 | $args[] = $this->parseClause($expr); |
| 720 | } |
| 721 | |
| 722 | // convert DQL function to its RDBMS specific equivalent |
| 723 | try { |
| 724 | $expr = call_user_func_array(array($this->_conn->expression, $name), $args); |
| 725 | } catch (Doctrine_Expression_Exception $e) { |
| 726 | throw new Doctrine_Query_Exception('Unknown function ' . $expr . '.'); |
| 727 | } |
| 728 | $term[0] = $expr; |
| 729 | } else { |
| 730 | $trimmed = trim($this->_tokenizer->bracketTrim($term[0])); |
| 731 | |
| 732 | // check for possible subqueries |
| 733 | if (substr($trimmed, 0, 4) == 'FROM' || substr($trimmed, 0, 6) == 'SELECT') { |
| 734 | // parse subquery |
| 735 | $trimmed = $this->createSubquery()->parseDqlQuery($trimmed)->getQuery(); |
| 736 | } else { |
| 737 | // parse normal clause |
| 738 | $trimmed = $this->parseClause($trimmed); |
| 739 | } |
| 740 | |
| 741 | $term[0] = '(' . $trimmed . ')'; |
| 742 | } |
| 743 | } else { |
| 744 | if (substr($term[0], 0, 1) !== "'" && substr($term[0], -1) !== "'") { |
| 745 | |
| 746 | if (strpos($term[0], '.') !== false) { |
| 747 | if ( ! is_numeric($term[0])) { |
| 748 | $e = explode('.', $term[0]); |
| 749 | |
| 750 | $field = array_pop($e); |
| 751 | |
| 752 | if ($this->getType() === Doctrine_Query::SELECT) { |
| 753 | $componentAlias = implode('.', $e); |
| 754 | |
| 755 | if (empty($componentAlias)) { |
| 756 | $componentAlias = $this->getRootAlias(); |
| 757 | } |
| 758 | |
| 759 | $this->load($componentAlias); |
| 760 | |
| 761 | // check the existence of the component alias |
| 762 | if ( ! isset($this->_queryComponents[$componentAlias])) { |
| 763 | throw new Doctrine_Query_Exception('Unknown component alias ' . $componentAlias); |
| 764 | } |
| 765 | |
| 766 | $table = $this->_queryComponents[$componentAlias]['table']; |
| 767 | |
| 768 | $def = $table->getDefinitionOf($field); |
| 769 | |
| 770 | // get the actual field name from alias |
| 771 | $field = $table->getColumnName($field); |
| 772 | |
| 773 | // check column existence |
| 774 | if ( ! $def) { |
| 775 | throw new Doctrine_Query_Exception('Unknown column ' . $field); |
| 776 | } |
| 777 | |
| 778 | if (isset($def['owner'])) { |
| 779 | $componentAlias = $componentAlias . '.' . $def['owner']; |
| 780 | } |
| 781 | |
| 782 | $tableAlias = $this->getTableAlias($componentAlias); |
| 783 | |
| 784 | // build sql expression |
| 785 | $term[0] = $this->_conn->quoteIdentifier($tableAlias) |
| 786 | . '.' |
| 787 | . $this->_conn->quoteIdentifier($field); |
| 788 | } else { |
| 789 | // build sql expression |
| 790 | $term[0] = $this->_conn->quoteIdentifier($field); |
| 791 | } |
| 792 | } |
| 793 | } else { |
| 794 | |
| 795 | if ( ! empty($term[0]) && |
| 796 | ! in_array(strtoupper($term[0]), self::$_keywords) && |
| 797 | ! is_numeric($term[0])) { |
| 798 | |
| 799 | $componentAlias = $this->getRootAlias(); |
| 800 | |
| 801 | $found = false; |
| 802 | |
| 803 | if ($componentAlias !== false && |
| 804 | $componentAlias !== null) { |
| 805 | $table = $this->_queryComponents[$componentAlias]['table']; |
| 806 | |
| 807 | // check column existence |
| 808 | if ($table->hasColumn($term[0])) { |
| 809 | $found = true; |
| 810 | |
| 811 | |
| 812 | $def = $table->getDefinitionOf($term[0]); |
| 813 | |
| 814 | // get the actual column name from alias |
| 815 | $term[0] = $table->getColumnName($term[0]); |
| 816 | |
| 817 | |
| 818 | if (isset($def['owner'])) { |
| 819 | $componentAlias = $componentAlias . '.' . $def['owner']; |
| 820 | } |
| 821 | |
| 822 | $tableAlias = $this->getTableAlias($componentAlias); |
| 823 | |
| 824 | $tableAlias = $this->getTableAlias($componentAlias); |
| 825 | |
| 826 | if ($this->getType() === Doctrine_Query::SELECT) { |
| 827 | // build sql expression |
| 828 | $term[0] = $this->_conn->quoteIdentifier($tableAlias) |
| 829 | . '.' |
| 830 | . $this->_conn->quoteIdentifier($term[0]); |
| 831 | } else { |
| 832 | // build sql expression |
| 833 | $term[0] = $this->_conn->quoteIdentifier($term[0]); |
| 834 | } |
| 835 | } else { |
| 836 | $found = false; |
| 837 | } |
| 838 | } |
| 839 | |
| 840 | if ( ! $found) { |
| 841 | $term[0] = $this->getSqlAggregateAlias($term[0]); |
| 842 | } |
| 843 | } |
| 844 | } |
| 845 | } |
| 846 | } |
| 847 | |
| 848 | $str .= $term[0] . $term[1]; |
| 849 | } |
| 850 | return $str; |
| 851 | } |
| 852 | |
| 853 | /** |
| 854 | * parseAggregateFunction |
| 855 | * parses an aggregate function and returns the parsed form |
| 856 | * |
| 857 | * @see Doctrine_Expression |
| 858 | * @param string $expr DQL aggregate function |
| 859 | * @throws Doctrine_Query_Exception if unknown aggregate function given |
| 860 | * @return array parsed form of given function |
| 861 | */ |
| 862 | public function parseAggregateFunction($expr, $nestedCall = false) |
| 863 | { |
| 864 | $e = $this->_tokenizer->bracketExplode($expr, ' '); |
| 865 | $func = $e[0]; |
| 866 | |
| 867 | $pos = strpos($func, '('); |
| 868 | if ($pos === false) { |
| 869 | return $expr; |
| 870 | } |
| 871 | |
| 872 | // get the name of the function |
| 873 | $name = substr($func, 0, $pos); |
| 874 | $argStr = substr($func, ($pos + 1), -1); |
| 875 | |
| 876 | $args = array(); |
| 877 | // parse args |
| 878 | foreach ($this->_tokenizer->bracketExplode($argStr, ',') as $expr) { |
| 879 | $args[] = $this->parseAggregateFunction($expr, true); |
| 880 | } |
| 881 | |
| 882 | // convert DQL function to its RDBMS specific equivalent |
| 883 | try { |
| 884 | $expr = call_user_func_array(array($this->_conn->expression, $name), $args); |
| 885 | } catch (Doctrine_Expression_Exception $e) { |
| 886 | throw new Doctrine_Query_Exception('Unknown function ' . $func . '.'); |
| 887 | } |
| 888 | |
| 889 | if ( ! $nestedCall) { |
| 890 | // try to find all component references |
| 891 | preg_match_all("/[a-z0-9_]+\.[a-z0-9_]+[\.[a-z0-9]+]*/i", $argStr, $m); |
| 892 | |
| 893 | if (isset($e[1])) { |
| 894 | if (strtoupper($e[1]) === 'AS') { |
| 895 | if ( ! isset($e[2])) { |
| 896 | throw new Doctrine_Query_Exception('Missing aggregate function alias.'); |
| 897 | } |
| 898 | $alias = $e[2]; |
| 899 | } else { |
| 900 | $alias = $e[1]; |
| 901 | } |
| 902 | } else { |
| 903 | $alias = substr($expr, 0, strpos($expr, '(')); |
| 904 | } |
| 905 | |
| 906 | $this->_pendingAggregates[] = array($expr, $m[0], $alias); |
| 907 | } |
| 908 | |
| 909 | return $expr; |
| 910 | } |
| 911 | |
| 912 | /** |
| 913 | * processPendingSubqueries |
| 914 | * processes pending subqueries |
| 915 | * |
| 916 | * subqueries can only be processed when the query is fully constructed |
| 917 | * since some subqueries may be correlated |
| 918 | * |
| 919 | * @return void |
| 920 | * @todo Better description. i.e. What is a 'pending subquery'? What does 'processed' mean? |
| 921 | * (parsed? sql is constructed? some information is gathered?) |
| 922 | */ |
| 923 | public function processPendingSubqueries() |
| 924 | { |
| 925 | foreach ($this->_pendingSubqueries as $value) { |
| 926 | list($dql, $alias) = $value; |
| 927 | |
| 928 | $subquery = $this->createSubquery(); |
| 929 | |
| 930 | $sql = $subquery->parseDqlQuery($dql, false)->getQuery(); |
| 931 | |
| 932 | reset($this->_queryComponents); |
| 933 | $componentAlias = key($this->_queryComponents); |
| 934 | $tableAlias = $this->getTableAlias($componentAlias); |
| 935 | |
| 936 | $sqlAlias = $tableAlias . '__' . count($this->_aggregateAliasMap); |
| 937 | |
| 938 | $this->_sqlParts['select'][] = '(' . $sql . ') AS ' . $this->_conn->quoteIdentifier($sqlAlias); |
| 939 | |
| 940 | $this->_aggregateAliasMap[$alias] = $sqlAlias; |
| 941 | $this->_queryComponents[$componentAlias]['agg'][] = $alias; |
| 942 | } |
| 943 | $this->_pendingSubqueries = array(); |
| 944 | } |
| 945 | |
| 946 | /** |
| 947 | * processPendingAggregates |
| 948 | * processes pending aggregate values for given component alias |
| 949 | * |
| 950 | * @return void |
| 951 | * @todo Better description. i.e. What is a 'pending aggregate'? What does 'processed' mean? |
| 952 | */ |
| 953 | public function processPendingAggregates() |
| 954 | { |
| 955 | // iterate trhough all aggregates |
| 956 | foreach ($this->_pendingAggregates as $aggregate) { |
| 957 | list ($expression, $components, $alias) = $aggregate; |
| 958 | |
| 959 | $tableAliases = array(); |
| 960 | |
| 961 | // iterate through the component references within the aggregate function |
| 962 | if ( ! empty ($components)) { |
| 963 | foreach ($components as $component) { |
| 964 | |
| 965 | if (is_numeric($component)) { |
| 966 | continue; |
| 967 | } |
| 968 | |
| 969 | $e = explode('.', $component); |
| 970 | |
| 971 | $field = array_pop($e); |
| 972 | $componentAlias = implode('.', $e); |
| 973 | |
| 974 | // check the existence of the component alias |
| 975 | if ( ! isset($this->_queryComponents[$componentAlias])) { |
| 976 | throw new Doctrine_Query_Exception('Unknown component alias ' . $componentAlias); |
| 977 | } |
| 978 | |
| 979 | $table = $this->_queryComponents[$componentAlias]['table']; |
| 980 | |
| 981 | $field = $table->getColumnName($field); |
| 982 | |
| 983 | // check column existence |
| 984 | if ( ! $table->hasColumn($field)) { |
| 985 | throw new Doctrine_Query_Exception('Unknown column ' . $field); |
| 986 | } |
| 987 | |
| 988 | $sqlTableAlias = $this->getSqlTableAlias($componentAlias); |
| 989 | |
| 990 | $tableAliases[$sqlTableAlias] = true; |
| 991 | |
| 992 | // build sql expression |
| 993 | |
| 994 | $identifier = $this->_conn->quoteIdentifier($sqlTableAlias . '.' . $field); |
| 995 | $expression = str_replace($component, $identifier, $expression); |
| 996 | } |
| 997 | } |
| 998 | |
| 999 | if (count($tableAliases) !== 1) { |
| 1000 | $componentAlias = reset($this->_tableAliasMap); |
| 1001 | $tableAlias = key($this->_tableAliasMap); |
| 1002 | } |
| 1003 | |
| 1004 | $index = count($this->_aggregateAliasMap); |
| 1005 | $sqlAlias = $this->_conn->quoteIdentifier($tableAlias . '__' . $index); |
| 1006 | |
| 1007 | $this->_sqlParts['select'][] = $expression . ' AS ' . $sqlAlias; |
| 1008 | |
| 1009 | $this->_aggregateAliasMap[$alias] = $sqlAlias; |
| 1010 | $this->_expressionMap[$alias][0] = $expression; |
| 1011 | |
| 1012 | $this->_queryComponents[$componentAlias]['agg'][$index] = $alias; |
| 1013 | |
| 1014 | $this->_neededTables[] = $tableAlias; |
| 1015 | } |
| 1016 | // reset the state |
| 1017 | $this->_pendingAggregates = array(); |
| 1018 | } |
| 1019 | |
| 1020 | /** |
| 1021 | * _buildSqlQueryBase |
| 1022 | * returns the base of the generated sql query |
| 1023 | * On mysql driver special strategy has to be used for DELETE statements |
| 1024 | * (where is this special strategy??) |
| 1025 | * |
| 1026 | * @return string the base of the generated sql query |
| 1027 | */ |
| 1028 | protected function _buildSqlQueryBase() |
| 1029 | { |
| 1030 | switch ($this->_type) { |
| 1031 | case self::DELETE: |
| 1032 | $q = 'DELETE FROM '; |
| 1033 | break; |
| 1034 | case self::UPDATE: |
| 1035 | $q = 'UPDATE '; |
| 1036 | break; |
| 1037 | case self::SELECT: |
| 1038 | $distinct = ($this->_sqlParts['distinct']) ? 'DISTINCT ' : ''; |
| 1039 | $q = 'SELECT ' . $distinct . implode(', ', $this->_sqlParts['select']) . ' FROM '; |
| 1040 | break; |
| 1041 | } |
| 1042 | return $q; |
| 1043 | } |
| 1044 | |
| 1045 | /** |
| 1046 | * _buildSqlFromPart |
| 1047 | * builds the from part of the query and returns it |
| 1048 | * |
| 1049 | * @return string the query sql from part |
| 1050 | */ |
| 1051 | protected function _buildSqlFromPart() |
| 1052 | { |
| 1053 | $q = ''; |
| 1054 | foreach ($this->_sqlParts['from'] as $k => $part) { |
| 1055 | if ($k === 0) { |
| 1056 | $q .= $part; |
| 1057 | continue; |
| 1058 | } |
| 1059 | |
| 1060 | // preserve LEFT JOINs only if needed |
| 1061 | // Check if it's JOIN, if not add a comma separator instead of space |
| 1062 | if (!preg_match('/\bJOIN\b/i', $part) && !isset($this->_pendingJoinConditions[$k])) { |
| 1063 | $q .= ', ' . $part; |
| 1064 | } else { |
| 1065 | if (substr($part, 0, 9) === 'LEFT JOIN') { |
| 1066 | $e = explode(' ', $part); |
| 1067 | |
| 1068 | $aliases = array_merge($this->_subqueryAliases, |
| 1069 | array_keys($this->_neededTables)); |
| 1070 | |
| 1071 | if ( ! in_array($e[3], $aliases) && |
| 1072 | ! in_array($e[2], $aliases) && |
| 1073 | |
| 1074 | ! empty($this->_pendingFields)) { |
| 1075 | continue; |
| 1076 | } |
| 1077 | |
| 1078 | } |
| 1079 | |
| 1080 | if (isset($this->_pendingJoinConditions[$k])) { |
| 1081 | $parser = new Doctrine_Query_JoinCondition($this, $this->_tokenizer); |
| 1082 | |
| 1083 | if (strpos($part, ' ON ') !== false) { |
| 1084 | $part .= ' AND '; |
| 1085 | } else { |
| 1086 | $part .= ' ON '; |
| 1087 | } |
| 1088 | $part .= $parser->parse($this->_pendingJoinConditions[$k]); |
| 1089 | |
| 1090 | unset($this->_pendingJoinConditions[$k]); |
| 1091 | } |
| 1092 | |
| 1093 | $q .= ' ' . $part; |
| 1094 | } |
| 1095 | |
| 1096 | $this->_sqlParts['from'][$k] = $part; |
| 1097 | } |
| 1098 | return $q; |
| 1099 | } |
| 1100 | |
| 1101 | /** |
| 1102 | * preQuery |
| 1103 | * |
| 1104 | * Empty template method to provide Query subclasses with the possibility |
| 1105 | * to hook into the query building procedure, doing any custom / specialized |
| 1106 | * query building procedures that are neccessary. |
| 1107 | * |
| 1108 | * @return void |
| 1109 | */ |
| 1110 | public function preQuery() |
| 1111 | { |
| 1112 | |
| 1113 | } |
| 1114 | |
| 1115 | /** |
| 1116 | * postQuery |
| 1117 | * |
| 1118 | * Empty template method to provide Query subclasses with the possibility |
| 1119 | * to hook into the query building procedure, doing any custom / specialized |
| 1120 | * post query procedures (for example logging) that are neccessary. |
| 1121 | * |
| 1122 | * @return void |
| 1123 | */ |
| 1124 | public function postQuery() |
| 1125 | { |
| 1126 | |
| 1127 | } |
| 1128 | |
| 1129 | /** |
| 1130 | * builds the sql query from the given parameters and applies things such as |
| 1131 | * column aggregation inheritance and limit subqueries if needed |
| 1132 | * |
| 1133 | * @param array $params an array of prepared statement params (needed only in mysql driver |
| 1134 | * when limit subquery algorithm is used) |
| 1135 | * @return string the built sql query |
| 1136 | */ |
| 1137 | public function getSqlQuery($params = array()) |
| 1138 | { |
| 1139 | if ($this->_state !== self::STATE_DIRTY) { |
| 1140 | return $this->_sql; |
| 1141 | } |
| 1142 | |
| 1143 | // reset the state |
| 1144 | if ( ! $this->isSubquery()) { |
| 1145 | $this->_queryComponents = array(); |
| 1146 | $this->_pendingAggregates = array(); |
| 1147 | $this->_aggregateAliasMap = array(); |
| 1148 | } |
| 1149 | $this->reset(); |
| 1150 | |
| 1151 | // invoke the preQuery hook |
| 1152 | $this->preQuery(); |
| 1153 | |
| 1154 | // process the DQL parts => generate the SQL parts. |
| 1155 | // this will also populate the $_queryComponents. |
| 1156 | foreach ($this->_dqlParts as $queryPartName => $queryParts) { |
| 1157 | $this->_processDqlQueryPart($queryPartName, $queryParts); |
| 1158 | } |
| 1159 | $this->_state = self::STATE_CLEAN; |
| 1160 | |
| 1161 | $params = $this->convertEnums($params); |
| 1162 | |
| 1163 | |
| 1164 | // Proceed with the generated SQL |
| 1165 | |
| 1166 | if (empty($this->_sqlParts['from'])) { |
| 1167 | return false; |
| 1168 | } |
| 1169 | |
| 1170 | $needsSubQuery = false; |
| 1171 | $subquery = ''; |
| 1172 | $map = reset($this->_queryComponents); |
| 1173 | $table = $map['table']; |
| 1174 | $rootAlias = key($this->_queryComponents); |
| 1175 | |
| 1176 | if ( ! empty($this->_sqlParts['limit']) && $this->_needsSubquery && |
| 1177 | $table->getAttribute(Doctrine::ATTR_QUERY_LIMIT) == Doctrine::LIMIT_RECORDS) { |
| 1178 | $this->_isLimitSubqueryUsed = true; |
| 1179 | $needsSubQuery = true; |
| 1180 | } |
| 1181 | |
| 1182 | $sql = array(); |
| 1183 | foreach ($this->_queryComponents as $alias => $map) { |
| 1184 | $fieldSql = $this->processPendingFields($alias); |
| 1185 | if ( ! empty($fieldSql)) { |
| 1186 | $sql[] = $fieldSql; |
| 1187 | } |
| 1188 | } |
| 1189 | if ( ! empty($sql)) { |
| 1190 | array_unshift($this->_sqlParts['select'], implode(', ', $sql)); |
| 1191 | } |
| 1192 | |
| 1193 | $this->_pendingFields = array(); |
| 1194 | |
| 1195 | // build the basic query |
| 1196 | $q = $this->_buildSqlQueryBase(); |
| 1197 | $q .= $this->_buildSqlFromPart(); |
| 1198 | |
| 1199 | if ( ! empty($this->_sqlParts['set'])) { |
| 1200 | $q .= ' SET ' . implode(', ', $this->_sqlParts['set']); |
| 1201 | } |
| 1202 | |
| 1203 | |
| 1204 | $string = $this->applyInheritance(); |
| 1205 | |
| 1206 | // apply inheritance to WHERE part |
| 1207 | if ( ! empty($string)) { |
| 1208 | if (substr($string, 0, 1) === '(' && substr($string, -1) === ')') { |
| 1209 | $this->_sqlParts['where'][] = $string; |
| 1210 | } else { |
| 1211 | $this->_sqlParts['where'][] = '(' . $string . ')'; |
| 1212 | } |
| 1213 | } |
| 1214 | |
| 1215 | $modifyLimit = true; |
| 1216 | if ( ! empty($this->_sqlParts['limit']) || ! empty($this->_sqlParts['offset'])) { |
| 1217 | |
| 1218 | if ($needsSubQuery) { |
| 1219 | $subquery = $this->getLimitSubquery(); |
| 1220 | // what about composite keys? |
| 1221 | $idColumnName = $table->getColumnName($table->getIdentifier()); |
| 1222 | switch (strtolower($this->_conn->getName())) { |
| 1223 | case 'mysql': |
| 1224 | // mysql doesn't support LIMIT in subqueries |
| 1225 | $list = $this->_conn->execute($subquery, $params)->fetchAll(Doctrine::FETCH_COLUMN); |
| 1226 | $subquery = implode(', ', array_map(array($this->_conn, 'quote'), $list)); |
| 1227 | break; |
| 1228 | case 'pgsql': |
| 1229 | // pgsql needs special nested LIMIT subquery |
| 1230 | $subquery = 'SELECT doctrine_subquery_alias.' . $idColumnName . ' FROM (' . $subquery . ') AS doctrine_subquery_alias'; |
| 1231 | break; |
| 1232 | } |
| 1233 | |
| 1234 | $field = $this->getSqlTableAlias($rootAlias) . '.' . $idColumnName; |
| 1235 | |
| 1236 | // only append the subquery if it actually contains something |
| 1237 | if ($subquery !== '') { |
| 1238 | array_unshift($this->_sqlParts['where'], $this->_conn->quoteIdentifier($field) . ' IN (' . $subquery . ')'); |
| 1239 | } |
| 1240 | |
| 1241 | $modifyLimit = false; |
| 1242 | } |
| 1243 | } |
| 1244 | |
| 1245 | $q .= ( ! empty($this->_sqlParts['where']))? ' WHERE ' . implode(' AND ', $this->_sqlParts['where']) : ''; |
| 1246 | $q .= ( ! empty($this->_sqlParts['groupby']))? ' GROUP BY ' . implode(', ', $this->_sqlParts['groupby']) : ''; |
| 1247 | $q .= ( ! empty($this->_sqlParts['having']))? ' HAVING ' . implode(' AND ', $this->_sqlParts['having']): ''; |
| 1248 | $q .= ( ! empty($this->_sqlParts['orderby']))? ' ORDER BY ' . implode(', ', $this->_sqlParts['orderby']) : ''; |
| 1249 | |
| 1250 | if ($modifyLimit) { |
| 1251 | $q = $this->_conn->modifyLimitQuery($q, $this->_sqlParts['limit'], $this->_sqlParts['offset']); |
| 1252 | } |
| 1253 | |
| 1254 | // return to the previous state |
| 1255 | if ( ! empty($string)) { |
| 1256 | array_pop($this->_sqlParts['where']); |
| 1257 | } |
| 1258 | if ($needsSubQuery) { |
| 1259 | array_shift($this->_sqlParts['where']); |
| 1260 | } |
| 1261 | $this->_sql = $q; |
| 1262 | |
| 1263 | return $q; |
| 1264 | } |
| 1265 | |
| 1266 | /** |
| 1267 | * getLimitSubquery |
| 1268 | * this is method is used by the record limit algorithm |
| 1269 | * |
| 1270 | * when fetching one-to-many, many-to-many associated data with LIMIT clause |
| 1271 | * an additional subquery is needed for limiting the number of returned records instead |
| 1272 | * of limiting the number of sql result set rows |
| 1273 | * |
| 1274 | * @return string the limit subquery |
| 1275 | * @todo A little refactor to make the method easier to understand & maybe shorter? |
| 1276 | */ |
| 1277 | public function getLimitSubquery() |
| 1278 | { |
| 1279 | $map = reset($this->_queryComponents); |
| 1280 | $table = $map['table']; |
| 1281 | $componentAlias = key($this->_queryComponents); |
| 1282 | |
| 1283 | // get short alias |
| 1284 | $alias = $this->getTableAlias($componentAlias); |
| 1285 | // what about composite keys? |
| 1286 | $primaryKey = $alias . '.' . $table->getColumnName($table->getIdentifier()); |
| 1287 | |
| 1288 | // initialize the base of the subquery |
| 1289 | $subquery = 'SELECT DISTINCT ' . $this->_conn->quoteIdentifier($primaryKey); |
| 1290 | |
| 1291 | $driverName = $this->_conn->getAttribute(Doctrine::ATTR_DRIVER_NAME); |
| 1292 | |
| 1293 | // pgsql needs the order by fields to be preserved in select clause |
| 1294 | if ($driverName == 'pgsql') { |
| 1295 | foreach ($this->_sqlParts['orderby'] as $part) { |
| 1296 | $part = trim($part); |
| 1297 | $e = $this->_tokenizer->bracketExplode($part, ' '); |
| 1298 | $part = trim($e[0]); |
| 1299 | |
| 1300 | if (strpos($part, '.') === false) { |
| 1301 | continue; |
| 1302 | } |
| 1303 | |
| 1304 | // don't add functions |
| 1305 | if (strpos($part, '(') !== false) { |
| 1306 | continue; |
| 1307 | } |
| 1308 | |
| 1309 | // don't add primarykey column (its already in the select clause) |
| 1310 | if ($part !== $primaryKey) { |
| 1311 | $subquery .= ', ' . $part; |
| 1312 | } |
| 1313 | } |
| 1314 | } |
| 1315 | |
| 1316 | if ($driverName == 'mysql' || $driverName == 'pgsql') { |
| 1317 | foreach ($this->_expressionMap as $dqlAlias => $expr) { |
| 1318 | if (isset($expr[1])) { |
| 1319 | $subquery .= ', ' . $expr[0] . ' AS ' . $this->_aggregateAliasMap[$dqlAlias]; |
| 1320 | } |
| 1321 | } |
| 1322 | } |
| 1323 | |
| 1324 | $subquery .= ' FROM'; |
| 1325 | |
| 1326 | foreach ($this->_sqlParts['from'] as $part) { |
| 1327 | // preserve LEFT JOINs only if needed |
| 1328 | if (substr($part, 0, 9) === 'LEFT JOIN') { |
| 1329 | $e = explode(' ', $part); |
| 1330 | |
| 1331 | if (empty($this->_sqlParts['orderby']) && empty($this->_sqlParts['where'])) { |
| 1332 | continue; |
| 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | $subquery .= ' ' . $part; |
| 1337 | } |
| 1338 | |
| 1339 | // all conditions must be preserved in subquery |
| 1340 | $subquery .= ( ! empty($this->_sqlParts['where']))? ' WHERE ' . implode(' AND ', $this->_sqlParts['where']) : ''; |
| 1341 | $subquery .= ( ! empty($this->_sqlParts['groupby']))? ' GROUP BY ' . implode(', ', $this->_sqlParts['groupby']) : ''; |
| 1342 | $subquery .= ( ! empty($this->_sqlParts['having']))? ' HAVING ' . implode(' AND ', $this->_sqlParts['having']) : ''; |
| 1343 | |
| 1344 | $subquery .= ( ! empty($this->_sqlParts['orderby']))? ' ORDER BY ' . implode(', ', $this->_sqlParts['orderby']) : ''; |
| 1345 | |
| 1346 | // add driver specific limit clause |
| 1347 | $subquery = $this->_conn->modifyLimitQuery($subquery, $this->_sqlParts['limit'], $this->_sqlParts['offset']); |
| 1348 | |
| 1349 | $parts = $this->_tokenizer->quoteExplode($subquery, ' ', "'", "'"); |
| 1350 | |
| 1351 | foreach ($parts as $k => $part) { |
| 1352 | if (strpos($part, ' ') !== false) { |
| 1353 | continue; |
| 1354 | } |
| 1355 | |
| 1356 | $part = trim($part, "\"'`"); |
| 1357 | |
| 1358 | if ($this->hasSqlTableAlias($part)) { |
| 1359 | $parts[$k] = $this->_conn->quoteIdentifier($this->generateNewSqlTableAlias($part)); |
| 1360 | continue; |
| 1361 | } |
| 1362 | |
| 1363 | if (strpos($part, '.') === false) { |
| 1364 | continue; |
| 1365 | } |
| 1366 | preg_match_all("/[a-zA-Z0-9_]+\.[a-z0-9_]+/i", $part, $m); |
| 1367 | |
| 1368 | foreach ($m[0] as $match) { |
| 1369 | $e = explode('.', $match); |
| 1370 | $e[0] = $this->generateNewSqlTableAlias($e[0]); |
| 1371 | |
| 1372 | $parts[$k] = str_replace($match, implode('.', $e), $parts[$k]); |
| 1373 | } |
| 1374 | } |
| 1375 | |
| 1376 | if ($driverName == 'mysql' || $driverName == 'pgsql') { |
| 1377 | foreach ($parts as $k => $part) { |
| 1378 | if (strpos($part, "'") !== false) { |
| 1379 | continue; |
| 1380 | } |
| 1381 | if (strpos($part, '__') == false) { |
| 1382 | continue; |
| 1383 | } |
| 1384 | |
| 1385 | preg_match_all("/[a-zA-Z0-9_]+\_\_[a-z0-9_]+/i", $part, $m); |
| 1386 | |
| 1387 | foreach ($m[0] as $match) { |
| 1388 | $e = explode('__', $match); |
| 1389 | $e[0] = $this->generateNewTableAlias($e[0]); |
| 1390 | |
| 1391 | $parts[$k] = str_replace($match, implode('__', $e), $parts[$k]); |
| 1392 | } |
| 1393 | } |
| 1394 | } |
| 1395 | |
| 1396 | $subquery = implode(' ', $parts); |
| 1397 | return $subquery; |
| 1398 | } |
| 1399 | |
| 1400 | /** |
| 1401 | * DQL PARSER |
| 1402 | * parses a DQL query |
| 1403 | * first splits the query in parts and then uses individual |
| 1404 | * parsers for each part |
| 1405 | * |
| 1406 | * @param string $query DQL query |
| 1407 | * @param boolean $clear whether or not to clear the aliases |
| 1408 | * @throws Doctrine_Query_Exception if some generic parsing error occurs |
| 1409 | * @return Doctrine_Query |
| 1410 | */ |
| 1411 | public function parseDqlQuery($query, $clear = true) |
| 1412 | { |
| 1413 | if ($clear) { |
| 1414 | $this->clear(); |
| 1415 | } |
| 1416 | |
| 1417 | $query = trim($query); |
| 1418 | $query = str_replace("\n", ' ', $query); |
| 1419 | $query = str_replace("\r", ' ', $query); |
| 1420 | |
| 1421 | $parts = $this->_tokenizer->tokenizeQuery($query); |
| 1422 | |
| 1423 | foreach ($parts as $partName => $subParts) { |
| 1424 | $subParts = trim($subParts); |
| 1425 | $partName = strtolower($partName); |
| 1426 | switch ($partName) { |
| 1427 | case 'create': |
| 1428 | $this->_type = self::CREATE; |
| 1429 | break; |
| 1430 | case 'insert': |
| 1431 | $this->_type = self::INSERT; |
| 1432 | break; |
| 1433 | case 'delete': |
| 1434 | $this->_type = self::DELETE; |
| 1435 | break; |
| 1436 | case 'select': |
| 1437 | $this->_type = self::SELECT; |
| 1438 | $this->_addDqlQueryPart($partName, $subParts); |
| 1439 | break; |
| 1440 | case 'update': |
| 1441 | $this->_type = self::UPDATE; |
| 1442 | $partName = 'from'; |
| 1443 | case 'from': |
| 1444 | $this->_addDqlQueryPart($partName, $subParts); |
| 1445 | break; |
| 1446 | case 'set': |
| 1447 | $this->_addDqlQueryPart($partName, $subParts, true); |
| 1448 | break; |
| 1449 | case 'group': |
| 1450 | case 'order': |
| 1451 | $partName .= 'by'; |
| 1452 | case 'where': |
| 1453 | case 'having': |
| 1454 | case 'limit': |
| 1455 | case 'offset': |
| 1456 | $this->_addDqlQueryPart($partName, $subParts); |
| 1457 | break; |
| 1458 | } |
| 1459 | } |
| 1460 | |
| 1461 | return $this; |
| 1462 | } |
| 1463 | |
| 1464 | /** |
| 1465 | * @todo Describe & refactor... too long and nested. |
| 1466 | */ |
| 1467 | public function load($path, $loadFields = true) |
| 1468 | { |
| 1469 | if (isset($this->_queryComponents[$path])) { |
| 1470 | return $this->_queryComponents[$path]; |
| 1471 | } |
| 1472 | $e = $this->_tokenizer->quoteExplode($path, ' INDEXBY '); |
| 1473 | |
| 1474 | $mapWith = null; |
| 1475 | if (count($e) > 1) { |
| 1476 | $mapWith = trim($e[1]); |
| 1477 | |
| 1478 | $path = $e[0]; |
| 1479 | } |
| 1480 | |
| 1481 | // parse custom join conditions |
| 1482 | $e = explode(' ON ', $path); |
| 1483 | |
| 1484 | $joinCondition = ''; |
| 1485 | |
| 1486 | if (count($e) > 1) { |
| 1487 | $joinCondition = $e[1]; |
| 1488 | $overrideJoin = true; |
| 1489 | $path = $e[0]; |
| 1490 | } else { |
| 1491 | $e = explode(' WITH ', $path); |
| 1492 | |
| 1493 | if (count($e) > 1) { |
| 1494 | $joinCondition = $e[1]; |
| 1495 | $path = $e[0]; |
| 1496 | } |
| 1497 | $overrideJoin = false; |
| 1498 | } |
| 1499 | |
| 1500 | $tmp = explode(' ', $path); |
| 1501 | $componentAlias = $originalAlias = (count($tmp) > 1) ? end($tmp) : null; |
| 1502 | |
| 1503 | $e = preg_split("/[.:]/", $tmp[0], -1); |
| 1504 | |
| 1505 | $fullPath = $tmp[0]; |
| 1506 | $prevPath = ''; |
| 1507 | $fullLength = strlen($fullPath); |
| 1508 | |
| 1509 | if (isset($this->_queryComponents[$e[0]])) { |
| 1510 | $table = $this->_queryComponents[$e[0]]['table']; |
| 1511 | $componentAlias = $e[0]; |
| 1512 | |
| 1513 | $prevPath = $parent = array_shift($e); |
| 1514 | } |
| 1515 | |
| 1516 | foreach ($e as $key => $name) { |
| 1517 | // get length of the previous path |
| 1518 | $length = strlen($prevPath); |
| 1519 | |
| 1520 | // build the current component path |
| 1521 | $prevPath = ($prevPath) ? $prevPath . '.' . $name : $name; |
| 1522 | |
| 1523 | $delimeter = substr($fullPath, $length, 1); |
| 1524 | |
| 1525 | // if an alias is not given use the current path as an alias identifier |
| 1526 | if (strlen($prevPath) === $fullLength && isset($originalAlias)) { |
| 1527 | $componentAlias = $originalAlias; |
| 1528 | } else { |
| 1529 | $componentAlias = $prevPath; |
| 1530 | } |
| 1531 | |
| 1532 | // if the current alias already exists, skip it |
| 1533 | if (isset($this->_queryComponents[$componentAlias])) { |
| 1534 | continue; |
| 1535 | } |
| 1536 | |
| 1537 | if ( ! isset($table)) { |
| 1538 | // process the root of the path |
| 1539 | |
| 1540 | $table = $this->loadRoot($name, $componentAlias); |
| 1541 | } else { |
| 1542 | $join = ($delimeter == ':') ? 'INNER JOIN ' : 'LEFT JOIN '; |
| 1543 | |
| 1544 | $relation = $table->getRelation($name); |
| 1545 | $localTable = $table; |
| 1546 | |
| 1547 | $table = $relation->getTable(); |
| 1548 | $this->_queryComponents[$componentAlias] = array('table' => $table, |
| 1549 | 'parent' => $parent, |
| 1550 | 'relation' => $relation, |
| 1551 | 'map' => null); |
| 1552 | if ( ! $relation->isOneToOne()) { |
| 1553 | $this->_needsSubquery = true; |
| 1554 | } |
| 1555 | |
| 1556 | $localAlias = $this->getTableAlias($parent, $table->getTableName()); |
| 1557 | $foreignAlias = $this->getTableAlias($componentAlias, $relation->getTable()->getTableName()); |
| 1558 | $localSql = $this->_conn->quoteIdentifier($table->getTableName()) |
| 1559 | . ' ' |
| 1560 | . $this->_conn->quoteIdentifier($localAlias); |
| 1561 | |
| 1562 | $foreignSql = $this->_conn->quoteIdentifier($relation->getTable()->getTableName()) |
| 1563 | . ' ' |
| 1564 | . $this->_conn->quoteIdentifier($foreignAlias); |
| 1565 | |
| 1566 | $map = $relation->getTable()->inheritanceMap; |
| 1567 | |
| 1568 | if ( ! $loadFields || ! empty($map) || $joinCondition) { |
| 1569 | $this->_subqueryAliases[] = $foreignAlias; |
| 1570 | } |
| 1571 | |
| 1572 | if ($relation instanceof Doctrine_Relation_Association) { |
| 1573 | $asf = $relation->getAssociationTable(); |
| 1574 | |
| 1575 | $assocTableName = $asf->getTableName(); |
| 1576 | |
| 1577 | if ( ! $loadFields || ! empty($map) || $joinCondition) { |
| 1578 | $this->_subqueryAliases[] = $assocTableName; |
| 1579 | } |
| 1580 | |
| 1581 | $assocPath = $prevPath . '.' . $asf->getComponentName(); |
| 1582 | |
| 1583 | $this->_queryComponents[$assocPath] = array('parent' => $prevPath, 'relation' => $relation, 'table' => $asf); |
| 1584 | |
| 1585 | $assocAlias = $this->getTableAlias($assocPath, $asf->getTableName()); |
| 1586 | |
| 1587 | $queryPart = $join . $assocTableName . ' ' . $assocAlias; |
| 1588 | |
| 1589 | $queryPart .= ' ON ' . $localAlias |
| 1590 | . '.' |
| 1591 | . $localTable->getIdentifier() // what about composite keys? |
| 1592 | . ' = ' |
| 1593 | . $assocAlias . '.' . $relation->getLocal(); |
| 1594 | |
| 1595 | if ($relation->isEqual()) { |
| 1596 | // equal nest relation needs additional condition |
| 1597 | $queryPart .= ' OR ' . $localAlias |
| 1598 | . '.' |
| 1599 | . $table->getColumnName($table->getIdentifier()) |
| 1600 | . ' = ' |
| 1601 | . $assocAlias . '.' . $relation->getForeign(); |
| 1602 | } |
| 1603 | |
| 1604 | $this->_sqlParts['from'][] = $queryPart; |
| 1605 | |
| 1606 | $queryPart = $join . $foreignSql; |
| 1607 | |
| 1608 | if ( ! $overrideJoin) { |
| 1609 | $queryPart .= ' ON '; |
| 1610 | |
| 1611 | if ($relation->isEqual()) { |
| 1612 | $queryPart .= '('; |
| 1613 | } |
| 1614 | |
| 1615 | $queryPart .= $this->_conn->quoteIdentifier($foreignAlias . '.' . $relation->getTable()->getIdentifier()) |
| 1616 | . ' = ' |
| 1617 | . $this->_conn->quoteIdentifier($assocAlias . '.' . $relation->getForeign()); |
| 1618 | |
| 1619 | if ($relation->isEqual()) { |
| 1620 | $queryPart .= ' OR ' |
| 1621 | . $this->_conn->quoteIdentifier($foreignAlias . '.' . $table->getColumnName($table->getIdentifier())) |
| 1622 | . ' = ' |
| 1623 | . $this->_conn->quoteIdentifier($assocAlias . '.' . $relation->getLocal()) |
| 1624 | . ') AND ' |
| 1625 | . $this->_conn->quoteIdentifier($foreignAlias . '.' . $table->getIdentifier()) |
| 1626 | . ' != ' |
| 1627 | . $this->_conn->quoteIdentifier($localAlias . '.' . $table->getIdentifier()); |
| 1628 | } |
| 1629 | } |
| 1630 | } else { |
| 1631 | |
| 1632 | $queryPart = $join . $foreignSql; |
| 1633 | |
| 1634 | if ( ! $overrideJoin) { |
| 1635 | $queryPart .= ' ON ' |
| 1636 | . $this->_conn->quoteIdentifier($localAlias . '.' . $relation->getLocal()) |
| 1637 | . ' = ' |
| 1638 | . $this->_conn->quoteIdentifier($foreignAlias . '.' . $relation->getForeign()); |
| 1639 | } |
| 1640 | } |
| 1641 | |
| 1642 | $queryPart .= $this->buildInheritanceJoinSql($table->getComponentName(), $componentAlias); |
| 1643 | |
| 1644 | $this->_sqlParts['from'][$componentAlias] = $queryPart; |
| 1645 | if ( ! empty($joinCondition)) { |
| 1646 | $this->_pendingJoinConditions[$componentAlias] = $joinCondition; |
| 1647 | } |
| 1648 | } |
| 1649 | if ($loadFields) { |
| 1650 | |
| 1651 | $restoreState = false; |
| 1652 | // load fields if necessary |
| 1653 | if ($loadFields && empty($this->_dqlParts['select'])) { |
| 1654 | $this->_pendingFields[$componentAlias] = array('*'); |
| 1655 | } |
| 1656 | } |
| 1657 | $parent = $prevPath; |
| 1658 | } |
| 1659 | |
| 1660 | $table = $this->_queryComponents[$componentAlias]['table']; |
| 1661 | |
| 1662 | $indexBy = null; |
| 1663 | |
| 1664 | if (isset($mapWith)) { |
| 1665 | $e = explode('.', $mapWith); |
| 1666 | |
| 1667 | if (isset($e[1])) { |
| 1668 | $indexBy = $e[1]; |
| 1669 | } |
| 1670 | } elseif ($table->getBoundQueryPart('indexBy') !== null) { |
| 1671 | $indexBy = $table->getBoundQueryPart('indexBy'); |
| 1672 | } |
| 1673 | |
| 1674 | if ($indexBy !== null) { |
| 1675 | if ( ! $table->hasColumn($indexBy)) { |
| 1676 | throw new Doctrine_Query_Exception("Couldn't use key mapping. Column " . $indexBy . " does not exist."); |
| 1677 | } |
| 1678 | |
| 1679 | $this->_queryComponents[$componentAlias]['map'] = $table->getColumnName($indexBy); |
| 1680 | } |
| 1681 | return $this->_queryComponents[$componentAlias]; |
| 1682 | } |
| 1683 | |
| 1684 | /** |
| 1685 | * loadRoot |
| 1686 | * |
| 1687 | * @param string $name |
| 1688 | * @param string $componentAlias |
| 1689 | * @todo DESCRIBE ME! |
| 1690 | */ |
| 1691 | public function loadRoot($name, $componentAlias) |
| 1692 | { |
| 1693 | // get the connection for the component |
| 1694 | $this->_conn = Doctrine_Manager::getInstance() |
| 1695 | ->getConnectionForComponent($name); |
| 1696 | |
| 1697 | $table = $this->_conn->getTable($name); |
| 1698 | $tableName = $table->getTableName(); |
| 1699 | |
| 1700 | // get the short alias for this table |
| 1701 | $tableAlias = $this->getTableAlias($componentAlias, $tableName); |
| 1702 | // quote table name |
| 1703 | $queryPart = $this->_conn->quoteIdentifier($tableName); |
| 1704 | |
| 1705 | if ($this->_type === self::SELECT) { |
| 1706 | $queryPart .= ' ' . $this->_conn->quoteIdentifier($tableAlias); |
| 1707 | } |
| 1708 | |
| 1709 | $this->_tableAliasMap[$tableAlias] = $componentAlias; |
| 1710 | |
| 1711 | $queryPart .= $this->buildInheritanceJoinSql($name, $componentAlias); |
| 1712 | |
| 1713 | $this->_sqlParts['from'][] = $queryPart; |
| 1714 | |
| 1715 | $this->_queryComponents[$componentAlias] = array('table' => $table, 'map' => null); |
| 1716 | |
| 1717 | return $table; |
| 1718 | } |
| 1719 | |
| 1720 | /** |
| 1721 | * @todo DESCRIBE ME! |
| 1722 | */ |
| 1723 | public function buildInheritanceJoinSql($name, $componentAlias) |
| 1724 | { |
| 1725 | // get the connection for the component |
| 1726 | $this->_conn = Doctrine_Manager::getInstance()->getConnectionForComponent($name); |
| 1727 | |
| 1728 | $table = $this->_conn->getTable($name); |
| 1729 | $tableName = $table->getTableName(); |
| 1730 | |
| 1731 | // get the short alias for this table |
| 1732 | $tableAlias = $this->getTableAlias($componentAlias, $tableName); |
| 1733 | |
| 1734 | $queryPart = ''; |
| 1735 | |
| 1736 | foreach ($table->getOption('joinedParents') as $parent) { |
| 1737 | $parentTable = $this->_conn->getTable($parent); |
| 1738 | |
| 1739 | $parentAlias = $componentAlias . '.' . $parent; |
| 1740 | |
| 1741 | // get the short alias for the parent table |
| 1742 | $parentTableAlias = $this->getTableAlias($parentAlias, $parentTable->getTableName()); |
| 1743 | |
| 1744 | $queryPart .= ' LEFT JOIN ' . $this->_conn->quoteIdentifier($parentTable->getTableName()) |
| 1745 | . ' ' . $this->_conn->quoteIdentifier($parentTableAlias) . ' ON '; |
| 1746 | |
| 1747 | //Doctrine::dump($table->getIdentifier()); |
| 1748 | foreach ((array) $table->getIdentifier() as $identifier) { |
| 1749 | $column = $table->getColumnName($identifier); |
| 1750 | |
| 1751 | $queryPart .= $this->_conn->quoteIdentifier($tableAlias) |
| 1752 | . '.' . $this->_conn->quoteIdentifier($column) |
| 1753 | . ' = ' . $this->_conn->quoteIdentifier($parentTableAlias) |
| 1754 | . '.' . $this->_conn->quoteIdentifier($column); |
| 1755 | } |
| 1756 | } |
| 1757 | |
| 1758 | return $queryPart; |
| 1759 | } |
| 1760 | |
| 1761 | /** |
| 1762 | * count |
| 1763 | * fetches the count of the query |
| 1764 | * |
| 1765 | * This method executes the main query without all the |
| 1766 | * selected fields, ORDER BY part, LIMIT part and OFFSET part. |
| 1767 | * |
| 1768 | * Example: |
| 1769 | * Main query: |
| 1770 | * SELECT u.*, p.phonenumber FROM User u |
| 1771 | * LEFT JOIN u.Phonenumber p |
| 1772 | * WHERE p.phonenumber = '123 123' LIMIT 10 |
| 1773 | * |
| 1774 | * The modified DQL query: |
| 1775 | * SELECT COUNT(DISTINCT u.id) FROM User u |
| 1776 | * LEFT JOIN u.Phonenumber p |
| 1777 | * WHERE p.phonenumber = '123 123' |
| 1778 | * |
| 1779 | * @param array $params an array of prepared statement parameters |
| 1780 | * @return integer the count of this query |
| 1781 | */ |
| 1782 | public function count($params = array()) |
| 1783 | { |
| 1784 | // triggers dql parsing/processing |
| 1785 | $this->getQuery(); // this is ugly |
| 1786 | |
| 1787 | // initialize temporary variables |
| 1788 | $where = $this->_sqlParts['where']; |
| 1789 | $having = $this->_sqlParts['having']; |
| 1790 | $groupby = $this->_sqlParts['groupby']; |
| 1791 | $map = reset($this->_queryComponents); |
| 1792 | $componentAlias = key($this->_queryComponents); |
| 1793 | $table = $map['table']; |
| 1794 | |
| 1795 | // build the query base |
| 1796 | $q = 'SELECT COUNT(DISTINCT ' . $this->getTableAlias($componentAlias) |
| 1797 | . '.' . implode(',', (array) $table->getIdentifier()) |
| 1798 | . ') AS num_results'; |
| 1799 | |
| 1800 | foreach ($this->_sqlParts['select'] as $field) { |
| 1801 | if (strpos($field, '(') !== false) { |
| 1802 | $q .= ', ' . $field; |
| 1803 | } |
| 1804 | } |
| 1805 | |
| 1806 | $q .= ' FROM ' . $this->_buildSqlFromPart(); |
| 1807 | |
| 1808 | // append column aggregation inheritance (if needed) |
| 1809 | $string = $this->applyInheritance(); |
| 1810 | |
| 1811 | if ( ! empty($string)) { |
| 1812 | $where[] = $string; |
| 1813 | } |
| 1814 | // append conditions |
| 1815 | $q .= ( ! empty($where)) ? ' WHERE ' . implode(' AND ', $where) : ''; |
| 1816 | $q .= ( ! empty($groupby)) ? ' GROUP BY ' . implode(', ', $groupby) : ''; |
| 1817 | $q .= ( ! empty($having)) ? ' HAVING ' . implode(' AND ', $having): ''; |
| 1818 | |
| 1819 | if ( ! is_array($params)) { |
| 1820 | $params = array($params); |
| 1821 | } |
| 1822 | // append parameters |
| 1823 | $params = array_merge($this->_params['where'], $this->_params['having'], $params); |
| 1824 | |
| 1825 | $params = $this->convertEnums($params); |
| 1826 | |
| 1827 | $results = $this->getConnection()->fetchAll($q, $params); |
| 1828 | |
| 1829 | if (count($results) > 1) { |
| 1830 | $count = 0; |
| 1831 | foreach ($results as $result) { |
| 1832 | $count += $result['num_results']; |
| 1833 | } |
| 1834 | } else { |
| 1835 | $count = isset($results[0]) ? $results[0]['num_results']:0; |
| 1836 | } |
| 1837 | |
| 1838 | return (int) $count; |
| 1839 | } |
| 1840 | |
| 1841 | /** |
| 1842 | * query |
| 1843 | * query the database with DQL (Doctrine Query Language) |
| 1844 | * |
| 1845 | * @param string $query DQL query |
| 1846 | * @param array $params prepared statement parameters |
| 1847 | * @param int $hydrationMode Doctrine::FETCH_ARRAY or Doctrine::FETCH_RECORD |
| 1848 | * @see Doctrine::FETCH_* constants |
| 1849 | * @return mixed |
| 1850 | */ |
| 1851 | public function query($query, $params = array(), $hydrationMode = null) |
| 1852 | { |
| 1853 | $this->parseDqlQuery($query); |
| 1854 | return $this->execute($params, $hydrationMode); |
| 1855 | } |
| 1856 | |
| 1857 | /** |
| 1858 | * Copies a Doctrine_Query object. |
| 1859 | * |
| 1860 | * @param Doctrine_Query Doctrine query instance. |
| 1861 | * If ommited the instance itself will be used as source. |
| 1862 | * @return Doctrine_Query Copy of the Doctrine_Query instance. |
| 1863 | */ |
| 1864 | public function copy(Doctrine_Query $query = null) |
| 1865 | { |
| 1866 | if ( ! $query) { |
| 1867 | $query = $this; |
| 1868 | } |
| 1869 | |
| 1870 | $new = new Doctrine_Query(); |
| 1871 | $new->_dqlParts = $query->_dqlParts; |
| 1872 | $new->_params = $query->_params; |
| 1873 | $new->_hydrator = $query->_hydrator; |
| 1874 | |
| 1875 | return $new; |
| 1876 | } |
| 1877 | |
| 1878 | /** |
| 1879 | * Frees the resources used by the query object. It especially breaks a |
| 1880 | * cyclic reference between the query object and it's parsers. This enables |
| 1881 | * PHP's current GC to reclaim the memory. |
| 1882 | * This method can therefore be used to reduce memory usage when creating a lot |
| 1883 | * of query objects during a request. |
| 1884 | * |
| 1885 | * @return Doctrine_Query this object |
| 1886 | */ |
| 1887 | public function free() |
| 1888 | { |
| 1889 | $this->reset(); |
| 1890 | $this->_parsers = array(); |
| 1891 | $this->_dqlParts = array(); |
| 1892 | $this->_enumParams = array(); |
| 1893 | } |
| 1894 | |
| 1895 | /** |
| 1896 | * serialize |
| 1897 | * this method is automatically called when this Doctrine_Hydrate is serialized |
| 1898 | * |
| 1899 | * @return array an array of serialized properties |
| 1900 | */ |
| 1901 | public function serialize() |
| 1902 | { |
| 1903 | $vars = get_object_vars($this); |
| 1904 | } |
| 1905 | |
| 1906 | /** |
| 1907 | * unseralize |
| 1908 | * this method is automatically called everytime a Doctrine_Hydrate object is unserialized |
| 1909 | * |
| 1910 | * @param string $serialized Doctrine_Record as serialized string |
| 1911 | * @return void |
| 1912 | */ |
| 1913 | public function unserialize($serialized) |
| 1914 | { |
| 1915 | |
| 1916 | } |
| 1917 | } |