| 1 | <?php |
| 2 | /* |
| 3 | * $Id: Query.php 2735 2007-10-05 21:18:40Z zYne $ |
| 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 | Doctrine::autoload('Doctrine_Query_Abstract'); |
| 22 | /** |
| 23 | * Doctrine_Query |
| 24 | * |
| 25 | * @package Doctrine |
| 26 | * @subpackage Query |
| 27 | * @license http://www.opensource.org/licenses/lgpl-license.php LGPL |
| 28 | * @link www.phpdoctrine.com |
| 29 | * @since 1.0 |
| 30 | * @version $Revision: 2735 $ |
| 31 | * @author Konsta Vesterinen <kvesteri@cc.hut.fi> |
| 32 | */ |
| 33 | class Doctrine_Query extends Doctrine_Query_Abstract implements Countable |
| 34 | { |
| 35 | const STATE_CLEAN = 1; |
| 36 | |
| 37 | const STATE_DIRTY = 2; |
| 38 | |
| 39 | const STATE_DIRECT = 3; |
| 40 | |
| 41 | const STATE_LOCKED = 4; |
| 42 | |
| 43 | |
| 44 | protected $subqueryAliases = array(); |
| 45 | /** |
| 46 | * @param boolean $needsSubquery |
| 47 | */ |
| 48 | protected $needsSubquery = false; |
| 49 | /** |
| 50 | * @param boolean $isSubquery whether or not this query object is a subquery of another |
| 51 | * query object |
| 52 | */ |
| 53 | protected $isSubquery; |
| 54 | |
| 55 | protected $isLimitSubqueryUsed = false; |
| 56 | /** |
| 57 | * @var array $_neededTables an array containing the needed table aliases |
| 58 | */ |
| 59 | protected $_neededTables = array(); |
| 60 | /** |
| 61 | * @var array $pendingSubqueries SELECT part subqueries, these are called pending subqueries since |
| 62 | * they cannot be parsed directly (some queries might be correlated) |
| 63 | */ |
| 64 | protected $pendingSubqueries = array(); |
| 65 | /** |
| 66 | * @var array $pendingFields |
| 67 | */ |
| 68 | protected $pendingFields = array(); |
| 69 | /** |
| 70 | * @var array $_parsers an array of parser objects, each DQL query part has its own parser |
| 71 | */ |
| 72 | protected $_parsers = array(); |
| 73 | /** |
| 74 | * @var array $_enumParams an array containing the keys of the parameters that should be enumerated |
| 75 | */ |
| 76 | protected $_enumParams = array(); |
| 77 | |
| 78 | /** |
| 79 | * @var array $_dqlParts an array containing all DQL query parts |
| 80 | */ |
| 81 | protected $_dqlParts = array( |
| 82 | 'from' => array(), |
| 83 | 'select' => array(), |
| 84 | 'forUpdate' => false, |
| 85 | 'set' => array(), |
| 86 | 'join' => array(), |
| 87 | 'where' => array(), |
| 88 | 'groupby' => array(), |
| 89 | 'having' => array(), |
| 90 | 'orderby' => array(), |
| 91 | 'limit' => array(), |
| 92 | 'offset' => array(), |
| 93 | ); |
| 94 | /** |
| 95 | * @var array $_pendingJoinConditions an array containing pending joins |
| 96 | */ |
| 97 | protected $_pendingJoinConditions = array(); |
| 98 | |
| 99 | protected $_expressionMap = array(); |
| 100 | |
| 101 | protected $_state = Doctrine_Query::STATE_CLEAN; |
| 102 | |
| 103 | /** |
| 104 | * create |
| 105 | * returns a new Doctrine_Query object |
| 106 | * |
| 107 | * @param Doctrine_Connection $conn optional connection parameter |
| 108 | * @return Doctrine_Query |
| 109 | */ |
| 110 | public static function create($conn = null) |
| 111 | { |
| 112 | return new Doctrine_Query($conn); |
| 113 | } |
| 114 | public function reset() |
| 115 | { |
| 116 | $this->_pendingJoinConditions = array(); |
| 117 | $this->pendingSubqueries = array(); |
| 118 | $this->pendingFields = array(); |
| 119 | $this->_neededTables = array(); |
| 120 | $this->_expressionMap = array(); |
| 121 | $this->subqueryAliases = array(); |
| 122 | $this->needsSubquery = false; |
| 123 | $this->isLimitSubqueryUsed = false; |
| 124 | } |
| 125 | /** |
| 126 | * setOption |
| 127 | * |
| 128 | * @param string $name option name |
| 129 | * @param string $value option value |
| 130 | * @return Doctrine_Query this object |
| 131 | */ |
| 132 | public function setOption($name, $value) |
| 133 | { |
| 134 | if ( ! isset($this->_options[$name])) { |
| 135 | throw new Doctrine_Query_Exception('Unknown option ' . $name); |
| 136 | } |
| 137 | $this->_options[$name] = $value; |
| 138 | } |
| 139 | /** |
| 140 | * addPendingJoinCondition |
| 141 | * |
| 142 | * @param string $componentAlias component alias |
| 143 | * @param string $joinCondition dql join condition |
| 144 | * @return Doctrine_Query this object |
| 145 | */ |
| 146 | public function addPendingJoinCondition($componentAlias, $joinCondition) |
| 147 | { |
| 148 | $this->_pendingJoins[$componentAlias] = $joinCondition; |
| 149 | } |
| 150 | /** |
| 151 | * addEnumParam |
| 152 | * sets input parameter as an enumerated parameter |
| 153 | * |
| 154 | * @param string $key the key of the input parameter |
| 155 | * @return Doctrine_Query |
| 156 | */ |
| 157 | public function addEnumParam($key, $table = null, $column = null) |
| 158 | { |
| 159 | $array = (isset($table) || isset($column)) ? array($table, $column) : array(); |
| 160 | |
| 161 | if ($key === '?') { |
| 162 | $this->_enumParams[] = $array; |
| 163 | } else { |
| 164 | $this->_enumParams[$key] = $array; |
| 165 | } |
| 166 | } |
| 167 | /** |
| 168 | * getEnumParams |
| 169 | * get all enumerated parameters |
| 170 | * |
| 171 | * @return array all enumerated parameters |
| 172 | */ |
| 173 | public function getEnumParams() |
| 174 | { |
| 175 | return $this->_enumParams; |
| 176 | } |
| 177 | /** |
| 178 | * limitSubqueryUsed |
| 179 | * |
| 180 | * @return boolean |
| 181 | */ |
| 182 | public function isLimitSubqueryUsed() |
| 183 | { |
| 184 | return $this->isLimitSubqueryUsed; |
| 185 | } |
| 186 | /** |
| 187 | * convertEnums |
| 188 | * convert enum parameters to their integer equivalents |
| 189 | * |
| 190 | * @return array converted parameter array |
| 191 | */ |
| 192 | public function convertEnums($params) |
| 193 | { |
| 194 | foreach ($this->_enumParams as $key => $values) { |
| 195 | if (isset($params[$key])) { |
| 196 | if ( ! empty($values)) { |
| 197 | $params[$key] = $values[0]->enumIndex($values[1], $params[$key]); |
| 198 | } |
| 199 | } |
| 200 | } |
| 201 | return $params; |
| 202 | } |
| 203 | /** |
| 204 | * isSubquery |
| 205 | * if $bool parameter is set this method sets the value of |
| 206 | * Doctrine_Query::$isSubquery. If this value is set to true |
| 207 | * the query object will not load the primary key fields of the selected |
| 208 | * components. |
| 209 | * |
| 210 | * If null is given as the first parameter this method retrieves the current |
| 211 | * value of Doctrine_Query::$isSubquery. |
| 212 | * |
| 213 | * @param boolean $bool whether or not this query acts as a subquery |
| 214 | * @return Doctrine_Query|bool |
| 215 | */ |
| 216 | public function isSubquery($bool = null) |
| 217 | { |
| 218 | if ($bool === null) { |
| 219 | return $this->isSubquery; |
| 220 | } |
| 221 | |
| 222 | $this->isSubquery = (bool) $bool; |
| 223 | return $this; |
| 224 | } |
| 225 | /** |
| 226 | * getAggregateAlias |
| 227 | * |
| 228 | * @param string $dqlAlias the dql alias of an aggregate value |
| 229 | * @return string |
| 230 | */ |
| 231 | public function getAggregateAlias($dqlAlias) |
| 232 | { |
| 233 | if (isset($this->aggregateMap[$dqlAlias])) { |
| 234 | // mark the expression as used |
| 235 | $this->_expressionMap[$dqlAlias][1] = true; |
| 236 | |
| 237 | return $this->aggregateMap[$dqlAlias]; |
| 238 | } |
| 239 | if ( ! empty($this->pendingAggregates)) { |
| 240 | $this->processPendingAggregates(); |
| 241 | |
| 242 | return $this->getAggregateAlias($dqlAlias); |
| 243 | } |
| 244 | throw new Doctrine_Query_Exception('Unknown aggregate alias ' . $dqlAlias); |
| 245 | } |
| 246 | /** |
| 247 | * getParser |
| 248 | * parser lazy-loader |
| 249 | * |
| 250 | * @throws Doctrine_Query_Exception if unknown parser name given |
| 251 | * @return Doctrine_Query_Part |
| 252 | */ |
| 253 | public function getParser($name) |
| 254 | { |
| 255 | if ( ! isset($this->_parsers[$name])) { |
| 256 | $class = 'Doctrine_Query_' . ucwords(strtolower($name)); |
| 257 | |
| 258 | Doctrine::autoload($class); |
| 259 | |
| 260 | if ( ! class_exists($class)) { |
| 261 | throw new Doctrine_Query_Exception('Unknown parser ' . $name); |
| 262 | } |
| 263 | |
| 264 | $this->_parsers[$name] = new $class($this); |
| 265 | } |
| 266 | |
| 267 | return $this->_parsers[$name]; |
| 268 | } |
| 269 | /** |
| 270 | * parseQueryPart |
| 271 | * parses given DQL query part |
| 272 | * |
| 273 | * @param string $queryPartName the name of the query part |
| 274 | * @param string $queryPart query part to be parsed |
| 275 | * @param boolean $append whether or not to append the query part to its stack |
| 276 | * if false is given, this method will overwrite |
| 277 | * the given query part stack with $queryPart |
| 278 | * @return Doctrine_Query this object |
| 279 | */ |
| 280 | public function parseQueryPart($queryPartName, $queryPart, $append = false) |
| 281 | { |
| 282 | if ($this->_state === self::STATE_LOCKED) { |
| 283 | throw new Doctrine_Query_Exception('This query object is locked. No query parts can be manipulated.'); |
| 284 | } |
| 285 | |
| 286 | // sanity check |
| 287 | if ($queryPart === '' || $queryPart === null) { |
| 288 | throw new Doctrine_Query_Exception('Empty ' . $queryPartName . ' part given.'); |
| 289 | } |
| 290 | |
| 291 | // add query part to the dql part array |
| 292 | if ($append) { |
| 293 | $this->_dqlParts[$queryPartName][] = $queryPart; |
| 294 | } else { |
| 295 | $this->_dqlParts[$queryPartName] = array($queryPart); |
| 296 | } |
| 297 | |
| 298 | if ($this->_state === self::STATE_DIRECT) { |
| 299 | $parser = $this->getParser($queryPartName); |
| 300 | |
| 301 | $sql = $parser->parse($queryPart); |
| 302 | |
| 303 | if (isset($sql)) { |
| 304 | if ($append) { |
| 305 | $this->addQueryPart($queryPartName, $sql); |
| 306 | } else { |
| 307 | $this->setQueryPart($queryPartName, $sql); |
| 308 | } |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | $this->_state = Doctrine_Query::STATE_DIRTY; |
| 313 | |
| 314 | return $this; |
| 315 | } |
| 316 | /** |
| 317 | * getDqlPart |
| 318 | * returns the given DQL query part |
| 319 | * |
| 320 | * @param string $queryPart the name of the query part |
| 321 | * @return string the DQL query part |
| 322 | */ |
| 323 | public function getDqlPart($queryPart) |
| 324 | { |
| 325 | if ( ! isset($this->_dqlParts[$queryPart])) { |
| 326 | throw new Doctrine_Query_Exception('Unknown query part ' . $queryPart); |
| 327 | } |
| 328 | |
| 329 | return $this->_dqlParts[$queryPart]; |
| 330 | } |
| 331 | /** |
| 332 | * getDql |
| 333 | * returns the DQL query associated with this object |
| 334 | * |
| 335 | * the query is built from $_dqlParts |
| 336 | * |
| 337 | * @return string the DQL query |
| 338 | */ |
| 339 | public function getDql() |
| 340 | { |
| 341 | $q = ''; |
| 342 | $q .= ( ! empty($this->_dqlParts['select']))? 'SELECT ' . implode(', ', $this->_dqlParts['select']) : ''; |
| 343 | $q .= ( ! empty($this->_dqlParts['from']))? ' FROM ' . implode(' ', $this->_dqlParts['from']) : ''; |
| 344 | $q .= ( ! empty($this->_dqlParts['where']))? ' WHERE ' . implode(' AND ', $this->_dqlParts['where']) : ''; |
| 345 | $q .= ( ! empty($this->_dqlParts['groupby']))? ' GROUP BY ' . implode(', ', $this->_dqlParts['groupby']) : ''; |
| 346 | $q .= ( ! empty($this->_dqlParts['having']))? ' HAVING ' . implode(' AND ', $this->_dqlParts['having']) : ''; |
| 347 | $q .= ( ! empty($this->_dqlParts['orderby']))? ' ORDER BY ' . implode(', ', $this->_dqlParts['orderby']) : ''; |
| 348 | $q .= ( ! empty($this->_dqlParts['limit']))? ' LIMIT ' . implode(' ', $this->_dqlParts['limit']) : ''; |
| 349 | $q .= ( ! empty($this->_dqlParts['offset']))? ' OFFSET ' . implode(' ', $this->_dqlParts['offset']) : ''; |
| 350 | |
| 351 | return $q; |
| 352 | } |
| 353 | /** |
| 354 | * processPendingFields |
| 355 | * the fields in SELECT clause cannot be parsed until the components |
| 356 | * in FROM clause are parsed, hence this method is called everytime a |
| 357 | * specific component is being parsed. |
| 358 | * |
| 359 | * @throws Doctrine_Query_Exception if unknown component alias has been given |
| 360 | * @param string $componentAlias the alias of the component |
| 361 | * @return void |
| 362 | */ |
| 363 | public function processPendingFields($componentAlias) |
| 364 | { |
| 365 | $tableAlias = $this->getTableAlias($componentAlias); |
| 366 | $table = $this->_aliasMap[$componentAlias]['table']; |
| 367 | |
| 368 | if (isset($this->pendingFields[$componentAlias])) { |
| 369 | $fields = $this->pendingFields[$componentAlias]; |
| 370 | |
| 371 | // check for wildcards |
| 372 | if (in_array('*', $fields)) { |
| 373 | $fields = $table->getColumnNames(); |
| 374 | } else { |
| 375 | // only auto-add the primary key fields if this query object is not |
| 376 | // a subquery of another query object |
| 377 | if ( ! $this->isSubquery) { |
| 378 | $fields = array_unique(array_merge((array) $table->getIdentifier(), $fields)); |
| 379 | } |
| 380 | } |
| 381 | $sql = array(); |
| 382 | foreach ($fields as $name) { |
| 383 | $name = $table->getColumnName($name); |
| 384 | |
| 385 | $sql[] = $this->_conn->quoteIdentifier($tableAlias . '.' . $name) |
| 386 | . ' AS ' |
| 387 | . $this->_conn->quoteIdentifier($tableAlias . '__' . $name); |
| 388 | } |
| 389 | |
| 390 | $this->_neededTables[] = $tableAlias; |
| 391 | |
| 392 | return implode(', ', $sql); |
| 393 | } |
| 394 | } |
| 395 | /** |
| 396 | * parseSelectField |
| 397 | * |
| 398 | * @throws Doctrine_Query_Exception if unknown component alias has been given |
| 399 | * @return void |
| 400 | */ |
| 401 | public function parseSelectField($field) |
| 402 | { |
| 403 | $terms = explode('.', $field); |
| 404 | |
| 405 | if (isset($terms[1])) { |
| 406 | $componentAlias = $terms[0]; |
| 407 | $field = $terms[1]; |
| 408 | } else { |
| 409 | reset($this->_aliasMap); |
| 410 | $componentAlias = key($this->_aliasMap); |
| 411 | $fields = $terms[0]; |
| 412 | } |
| 413 | |
| 414 | $tableAlias = $this->getTableAlias($componentAlias); |
| 415 | $table = $this->_aliasMap[$componentAlias]['table']; |
| 416 | |
| 417 | |
| 418 | // check for wildcards |
| 419 | if ($field === '*') { |
| 420 | $sql = array(); |
| 421 | |
| 422 | foreach ($table->getColumnNames() as $field) { |
| 423 | $sql[] = $this->parseSelectField($componentAlias . '.' . $field); |
| 424 | } |
| 425 | |
| 426 | return implode(', ', $sql); |
| 427 | } else { |
| 428 | |
| 429 | } |
| 430 | |
| 431 | $name = $table->getColumnName($field); |
| 432 | |
| 433 | $this->_neededTables[] = $tableAlias; |
| 434 | |
| 435 | return $this->_conn->quoteIdentifier($tableAlias . '.' . $name) |
| 436 | . ' AS ' |
| 437 | . $this->_conn->quoteIdentifier($tableAlias . '__' . $name); |
| 438 | } |
| 439 | /** |
| 440 | * getExpressionOwner |
| 441 | * returns the component alias for owner of given expression |
| 442 | * |
| 443 | * @param string $expr expression from which to get to owner from |
| 444 | * @return string the component alias |
| 445 | */ |
| 446 | public function getExpressionOwner($expr) |
| 447 | { |
| 448 | if (strtoupper(substr(trim($expr, '( '), 0, 6)) !== 'SELECT') { |
| 449 | preg_match_all("/[a-z0-9_]+\.[a-z0-9_]+[\.[a-z0-9]+]*/i", $expr, $matches); |
| 450 | |
| 451 | $match = current($matches); |
| 452 | |
| 453 | if (isset($match[0])) { |
| 454 | $terms = explode('.', $match[0]); |
| 455 | |
| 456 | return $terms[0]; |
| 457 | } |
| 458 | } |
| 459 | return $this->getRootAlias(); |
| 460 | |
| 461 | } |
| 462 | /** |
| 463 | * parseSelect |
| 464 | * parses the query select part and |
| 465 | * adds selected fields to pendingFields array |
| 466 | * |
| 467 | * @param string $dql |
| 468 | */ |
| 469 | public function parseSelect($dql) |
| 470 | { |
| 471 | $refs = Doctrine_Tokenizer::sqlExplode($dql, ','); |
| 472 | |
| 473 | $pos = strpos(trim($refs[0]), ' '); |
| 474 | $first = substr($refs[0], 0, $pos); |
| 475 | |
| 476 | // check for DISTINCT keyword |
| 477 | if ($first === 'DISTINCT') { |
| 478 | $this->parts['distinct'] = true; |
| 479 | |
| 480 | $refs[0] = substr($refs[0], ++$pos); |
| 481 | } |
| 482 | |
| 483 | $parsedComponents = array(); |
| 484 | |
| 485 | foreach ($refs as $reference) { |
| 486 | $reference = trim($reference); |
| 487 | |
| 488 | if (empty($reference)) { |
| 489 | continue; |
| 490 | } |
| 491 | |
| 492 | $terms = Doctrine_Tokenizer::sqlExplode($reference, ' '); |
| 493 | |
| 494 | $pos = strpos($terms[0], '('); |
| 495 | |
| 496 | if (count($terms) > 1 || $pos !== false) { |
| 497 | $expression = array_shift($terms); |
| 498 | $alias = array_pop($terms); |
| 499 | |
| 500 | if ( ! $alias) { |
| 501 | $alias = substr($expression, 0, $pos); |
| 502 | } |
| 503 | |
| 504 | $componentAlias = $this->getExpressionOwner($expression); |
| 505 | $expression = $this->parseClause($expression); |
| 506 | |
| 507 | $tableAlias = $this->getTableAlias($componentAlias); |
| 508 | |
| 509 | $index = count($this->aggregateMap); |
| 510 | |
| 511 | $sqlAlias = $this->_conn->quoteIdentifier($tableAlias . '__' . $index); |
| 512 | |
| 513 | $this->parts['select'][] = $expression . ' AS ' . $sqlAlias; |
| 514 | |
| 515 | $this->aggregateMap[$alias] = $sqlAlias; |
| 516 | $this->_expressionMap[$alias][0] = $expression; |
| 517 | |
| 518 | $this->_aliasMap[$componentAlias]['agg'][$index] = $alias; |
| 519 | |
| 520 | $this->_neededTables[] = $tableAlias; |
| 521 | } else { |
| 522 | $e = explode('.', $terms[0]); |
| 523 | |
| 524 | if (isset($e[1])) { |
| 525 | $componentAlias = $e[0]; |
| 526 | $field = $e[1]; |
| 527 | } else { |
| 528 | reset($this->_aliasMap); |
| 529 | $componentAlias = key($this->_aliasMap); |
| 530 | $field = $e[0]; |
| 531 | } |
| 532 | |
| 533 | $this->pendingFields[$componentAlias][] = $field; |
| 534 | } |
| 535 | } |
| 536 | } |
| 537 | /** |
| 538 | * parseClause |
| 539 | * parses given DQL clause |
| 540 | * |
| 541 | * this method handles five tasks: |
| 542 | * |
| 543 | * 1. Converts all DQL functions to their native SQL equivalents |
| 544 | * 2. Converts all component references to their table alias equivalents |
| 545 | * 3. Converts all column aliases to actual column names |
| 546 | * 4. Quotes all identifiers |
| 547 | * 5. Parses nested clauses and subqueries recursively |
| 548 | * |
| 549 | * @return string SQL string |
| 550 | */ |
| 551 | public function parseClause($clause) |
| 552 | { |
| 553 | $terms = Doctrine_Tokenizer::clauseExplode($clause, array(' ', '+', '-', '*', '/')); |
| 554 | |
| 555 | $str = ''; |
| 556 | foreach ($terms as $term) { |
| 557 | $pos = strpos($term[0], '('); |
| 558 | |
| 559 | if ($pos !== false) { |
| 560 | $name = substr($term[0], 0, $pos); |
| 561 | if ($name !== '') { |
| 562 | $argStr = substr($term[0], ($pos + 1), -1); |
| 563 | |
| 564 | $args = array(); |
| 565 | // parse args |
| 566 | |
| 567 | foreach (Doctrine_Tokenizer::sqlExplode($argStr, ',') as $expr) { |
| 568 | $args[] = $this->parseClause($expr); |
| 569 | } |
| 570 | |
| 571 | // convert DQL function to its RDBMS specific equivalent |
| 572 | try { |
| 573 | $expr = call_user_func_array(array($this->_conn->expression, $name), $args); |
| 574 | } catch(Doctrine_Expression_Exception $e) { |
| 575 | throw new Doctrine_Query_Exception('Unknown function ' . $expr . '.'); |
| 576 | } |
| 577 | $term[0] = $expr; |
| 578 | } else { |
| 579 | $trimmed = trim(Doctrine_Tokenizer::bracketTrim($term[0])); |
| 580 | |
| 581 | // check for possible subqueries |
| 582 | if (substr($trimmed, 0, 4) == 'FROM' || substr($trimmed, 0, 6) == 'SELECT') { |
| 583 | // parse subquery |
| 584 | $trimmed = $this->createSubquery()->parseQuery($trimmed)->getQuery(); |
| 585 | } else { |
| 586 | // parse normal clause |
| 587 | $trimmed = $this->parseClause($trimmed); |
| 588 | } |
| 589 | |
| 590 | $term[0] = '(' . $trimmed . ')'; |
| 591 | } |
| 592 | } else { |
| 593 | if (substr($term[0], 0, 1) !== "'" && substr($term[0], -1) !== "'") { |
| 594 | if (strpos($term[0], '.') !== false) { |
| 595 | if ( ! is_numeric($term[0])) { |
| 596 | $e = explode('.', $term[0]); |
| 597 | |
| 598 | $field = array_pop($e); |
| 599 | $componentAlias = implode('.', $e); |
| 600 | |
| 601 | // check the existence of the component alias |
| 602 | if ( ! isset($this->_aliasMap[$componentAlias])) { |
| 603 | throw new Doctrine_Query_Exception('Unknown component alias ' . $componentAlias); |
| 604 | } |
| 605 | |
| 606 | $table = $this->_aliasMap[$componentAlias]['table']; |
| 607 | |
| 608 | // get the actual field name from alias |
| 609 | $field = $table->getColumnName($field); |
| 610 | |
| 611 | // check column existence |
| 612 | if ( ! $table->hasColumn($field)) { |
| 613 | throw new Doctrine_Query_Exception('Unknown column ' . $field); |
| 614 | } |
| 615 | |
| 616 | $tableAlias = $this->getTableAlias($componentAlias); |
| 617 | |
| 618 | // build sql expression |
| 619 | $term[0] = $this->_conn->quoteIdentifier($tableAlias) |
| 620 | . '.' |
| 621 | . $this->_conn->quoteIdentifier($field); |
| 622 | } |
| 623 | } |
| 624 | } |
| 625 | } |
| 626 | |
| 627 | $str .= $term[0] . $term[1]; |
| 628 | } |
| 629 | return $str; |
| 630 | } |
| 631 | /** |
| 632 | * parseAggregateFunction |
| 633 | * parses an aggregate function and returns the parsed form |
| 634 | * |
| 635 | * @see Doctrine_Expression |
| 636 | * @param string $expr DQL aggregate function |
| 637 | * @throws Doctrine_Query_Exception if unknown aggregate function given |
| 638 | * @return array parsed form of given function |
| 639 | */ |
| 640 | public function parseAggregateFunction($expr, $nestedCall = false) |
| 641 | { |
| 642 | $e = Doctrine_Tokenizer::bracketExplode($expr, ' '); |
| 643 | $func = $e[0]; |
| 644 | |
| 645 | $pos = strpos($func, '('); |
| 646 | if ($pos === false) { |
| 647 | return $expr; |
| 648 | } |
| 649 | |
| 650 | // get the name of the function |
| 651 | $name = substr($func, 0, $pos); |
| 652 | $argStr = substr($func, ($pos + 1), -1); |
| 653 | |
| 654 | $args = array(); |
| 655 | // parse args |
| 656 | foreach (Doctrine_Tokenizer::bracketExplode($argStr, ',') as $expr) { |
| 657 | $args[] = $this->parseAggregateFunction($expr, true); |
| 658 | } |
| 659 | |
| 660 | // convert DQL function to its RDBMS specific equivalent |
| 661 | try { |
| 662 | $expr = call_user_func_array(array($this->_conn->expression, $name), $args); |
| 663 | } catch(Doctrine_Expression_Exception $e) { |
| 664 | throw new Doctrine_Query_Exception('Unknown function ' . $func . '.'); |
| 665 | } |
| 666 | |
| 667 | if ( ! $nestedCall) { |
| 668 | // try to find all component references |
| 669 | preg_match_all("/[a-z0-9_]+\.[a-z0-9_]+[\.[a-z0-9]+]*/i", $argStr, $m); |
| 670 | |
| 671 | if (isset($e[1])) { |
| 672 | if (strtoupper($e[1]) === 'AS') { |
| 673 | if ( ! isset($e[2])) { |
| 674 | throw new Doctrine_Query_Exception('Missing aggregate function alias.'); |
| 675 | } |
| 676 | $alias = $e[2]; |
| 677 | } else { |
| 678 | $alias = $e[1]; |
| 679 | } |
| 680 | } else { |
| 681 | $alias = substr($expr, 0, strpos($expr, '(')); |
| 682 | } |
| 683 | |
| 684 | $this->pendingAggregates[] = array($expr, $m[0], $alias); |
| 685 | } |
| 686 | |
| 687 | return $expr; |
| 688 | } |
| 689 | /** |
| 690 | * processPendingSubqueries |
| 691 | * processes pending subqueries |
| 692 | * |
| 693 | * subqueries can only be processed when the query is fully constructed |
| 694 | * since some subqueries may be correlated |
| 695 | * |
| 696 | * @return void |
| 697 | */ |
| 698 | public function processPendingSubqueries() |
| 699 | { |
| 700 | foreach ($this->pendingSubqueries as $value) { |
| 701 | list($dql, $alias) = $value; |
| 702 | |
| 703 | $subquery = $this->createSubquery(); |
| 704 | |
| 705 | $sql = $subquery->parseQuery($dql, false)->getQuery(); |
| 706 | |
| 707 | reset($this->_aliasMap); |
| 708 | $componentAlias = key($this->_aliasMap); |
| 709 | $tableAlias = $this->getTableAlias($componentAlias); |
| 710 | |
| 711 | $sqlAlias = $tableAlias . '__' . count($this->aggregateMap); |
| 712 | |
| 713 | $this->parts['select'][] = '(' . $sql . ') AS ' . $this->_conn->quoteIdentifier($sqlAlias); |
| 714 | |
| 715 | $this->aggregateMap[$alias] = $sqlAlias; |
| 716 | $this->_aliasMap[$componentAlias]['agg'][] = $alias; |
| 717 | } |
| 718 | $this->pendingSubqueries = array(); |
| 719 | } |
| 720 | /** |
| 721 | * processPendingAggregates |
| 722 | * processes pending aggregate values for given component alias |
| 723 | * |
| 724 | * @return void |
| 725 | */ |
| 726 | public function processPendingAggregates() |
| 727 | { |
| 728 | // iterate trhough all aggregates |
| 729 | foreach ($this->pendingAggregates as $aggregate) { |
| 730 | list ($expression, $components, $alias) = $aggregate; |
| 731 | |
| 732 | $tableAliases = array(); |
| 733 | |
| 734 | // iterate through the component references within the aggregate function |
| 735 | if ( ! empty ($components)) { |
| 736 | foreach ($components as $component) { |
| 737 | |
| 738 | if (is_numeric($component)) { |
| 739 | continue; |
| 740 | } |
| 741 | |
| 742 | $e = explode('.', $component); |
| 743 | |
| 744 | $field = array_pop($e); |
| 745 | $componentAlias = implode('.', $e); |
| 746 | |
| 747 | // check the existence of the component alias |
| 748 | if ( ! isset($this->_aliasMap[$componentAlias])) { |
| 749 | throw new Doctrine_Query_Exception('Unknown component alias ' . $componentAlias); |
| 750 | } |
| 751 | |
| 752 | $table = $this->_aliasMap[$componentAlias]['table']; |
| 753 | |
| 754 | $field = $table->getColumnName($field); |
| 755 | |
| 756 | // check column existence |
| 757 | if ( ! $table->hasColumn($field)) { |
| 758 | throw new Doctrine_Query_Exception('Unknown column ' . $field); |
| 759 | } |
| 760 | |
| 761 | $tableAlias = $this->getTableAlias($componentAlias); |
| 762 | |
| 763 | $tableAliases[$tableAlias] = true; |
| 764 | |
| 765 | // build sql expression |
| 766 | |
| 767 | $identifier = $this->_conn->quoteIdentifier($tableAlias . '.' . $field); |
| 768 | $expression = str_replace($component, $identifier, $expression); |
| 769 | } |
| 770 | } |
| 771 | |
| 772 | if (count($tableAliases) !== 1) { |
| 773 | $componentAlias = reset($this->tableAliases); |
| 774 | $tableAlias = key($this->tableAliases); |
| 775 | } |
| 776 | |
| 777 | $index = count($this->aggregateMap); |
| 778 | $sqlAlias = $this->_conn->quoteIdentifier($tableAlias . '__' . $index); |
| 779 | |
| 780 | $this->parts['select'][] = $expression . ' AS ' . $sqlAlias; |
| 781 | |
| 782 | $this->aggregateMap[$alias] = $sqlAlias; |
| 783 | $this->_expressionMap[$alias][0] = $expression; |
| 784 | |
| 785 | $this->_aliasMap[$componentAlias]['agg'][$index] = $alias; |
| 786 | |
| 787 | $this->_neededTables[] = $tableAlias; |
| 788 | } |
| 789 | // reset the state |
| 790 | $this->pendingAggregates = array(); |
| 791 | } |
| 792 | /** |
| 793 | * getQueryBase |
| 794 | * returns the base of the generated sql query |
| 795 | * On mysql driver special strategy has to be used for DELETE statements |
| 796 | * |
| 797 | * @return string the base of the generated sql query |
| 798 | */ |
| 799 | public function getQueryBase() |
| 800 | { |
| 801 | switch ($this->type) { |
| 802 | case self::DELETE: |
| 803 | $q = 'DELETE FROM '; |
| 804 | break; |
| 805 | case self::UPDATE: |
| 806 | $q = 'UPDATE '; |
| 807 | break; |
| 808 | case self::SELECT: |
| 809 | $distinct = ($this->parts['distinct']) ? 'DISTINCT ' : ''; |
| 810 | |
| 811 | $q = 'SELECT ' . $distinct . implode(', ', $this->parts['select']) . ' FROM '; |
| 812 | break; |
| 813 | } |
| 814 | return $q; |
| 815 | } |
| 816 | /** |
| 817 | * buildFromPart |
| 818 | * builds the from part of the query and returns it |
| 819 | * |
| 820 | * @return string the query sql from part |
| 821 | */ |
| 822 | public function buildFromPart() |
| 823 | { |
| 824 | $q = ''; |
| 825 | foreach ($this->parts['from'] as $k => $part) { |
| 826 | if ($k === 0) { |
| 827 | $q .= $part; |
| 828 | continue; |
| 829 | } |
| 830 | // preserve LEFT JOINs only if needed |
| 831 | |
| 832 | if (substr($part, 0, 9) === 'LEFT JOIN') { |
| 833 | $e = explode(' ', $part); |
| 834 | |
| 835 | $aliases = array_merge($this->subqueryAliases, |
| 836 | array_keys($this->_neededTables)); |
| 837 | |
| 838 | if ( ! in_array($e[3], $aliases) && |
| 839 | ! in_array($e[2], $aliases) && |
| 840 | |
| 841 | ! empty($this->pendingFields)) { |
| 842 | continue; |
| 843 | } |
| 844 | |
| 845 | } |
| 846 | |
| 847 | if (isset($this->_pendingJoinConditions[$k])) { |
| 848 | $parser = new Doctrine_Query_JoinCondition($this); |
| 849 | |
| 850 | if (strpos($part, ' ON ') !== false) { |
| 851 | $part .= ' AND '; |
| 852 | } else { |
| 853 | $part .= ' ON '; |
| 854 | } |
| 855 | $part .= $parser->parse($this->_pendingJoinConditions[$k]); |
| 856 | |
| 857 | unset($this->_pendingJoinConditions[$k]); |
| 858 | } |
| 859 | |
| 860 | $q .= ' ' . $part; |
| 861 | |
| 862 | $this->parts['from'][$k] = $part; |
| 863 | } |
| 864 | return $q; |
| 865 | } |
| 866 | /** |
| 867 | * preQuery |
| 868 | * |
| 869 | * Empty template method to provide Query subclasses with the possibility |
| 870 | * to hook into the query building procedure, doing any custom / specialized |
| 871 | * query building procedures that are neccessary. |
| 872 | * |
| 873 | * @return void |
| 874 | */ |
| 875 | public function preQuery() |
| 876 | { |
| 877 | |
| 878 | } |
| 879 | /** |
| 880 | * postQuery |
| 881 | * |
| 882 | * Empty template method to provide Query subclasses with the possibility |
| 883 | * to hook into the query building procedure, doing any custom / specialized |
| 884 | * post query procedures (for example logging) that are neccessary. |
| 885 | * |
| 886 | * @return void |
| 887 | */ |
| 888 | public function postQuery() |
| 889 | { |
| 890 | |
| 891 | } |
| 892 | /** |
| 893 | * processQueryPart |
| 894 | * parses given query part |
| 895 | * |
| 896 | * @param string $queryPartName the name of the query part |
| 897 | * @param array $queryParts an array containing the query part data |
| 898 | * @return Doctrine_Query this object |
| 899 | */ |
| 900 | public function processQueryPart($queryPartName, $queryParts) |
| 901 | { |
| 902 | $this->removeQueryPart($queryPartName); |
| 903 | |
| 904 | if (is_array($queryParts) && ! empty($queryParts)) { |
| 905 | |
| 906 | foreach ($queryParts as $queryPart) { |
| 907 | $parser = $this->getParser($queryPartName); |
| 908 | |
| 909 | $sql = $parser->parse($queryPart); |
| 910 | |
| 911 | if (isset($sql)) { |
| 912 | if ($queryPartName == 'limit' || |
| 913 | $queryPartName == 'offset') { |
| 914 | |
| 915 | $this->setQueryPart($queryPartName, $sql); |
| 916 | } else { |
| 917 | $this->addQueryPart($queryPartName, $sql); |
| 918 | } |
| 919 | } |
| 920 | } |
| 921 | } |
| 922 | } |
| 923 | /** |
| 924 | * builds the sql query from the given parameters and applies things such as |
| 925 | * column aggregation inheritance and limit subqueries if needed |
| 926 | * |
| 927 | * @param array $params an array of prepared statement params (needed only in mysql driver |
| 928 | * when limit subquery algorithm is used) |
| 929 | * @return string the built sql query |
| 930 | */ |
| 931 | public function getQuery($params = array()) |
| 932 | { |
| 933 | if ($this->_state !== self::STATE_DIRTY) { |
| 934 | return $this->_sql; |
| 935 | } |
| 936 | |
| 937 | $parts = $this->_dqlParts; |
| 938 | |
| 939 | // reset the state |
| 940 | if ( ! $this->isSubquery()) { |
| 941 | $this->_aliasMap = array(); |
| 942 | $this->pendingAggregates = array(); |
| 943 | $this->aggregateMap = array(); |
| 944 | } |
| 945 | $this->reset(); |
| 946 | |
| 947 | // parse the DQL parts |
| 948 | foreach ($this->_dqlParts as $queryPartName => $queryParts) { |
| 949 | $this->processQueryPart($queryPartName, $queryParts); |
| 950 | } |
| 951 | $params = $this->convertEnums($params); |
| 952 | |
| 953 | $this->_state = self::STATE_DIRECT; |
| 954 | |
| 955 | // invoke the preQuery hook |
| 956 | $this->preQuery(); |
| 957 | $this->_state = self::STATE_CLEAN; |
| 958 | |
| 959 | $this->_dqlParts = $parts; |
| 960 | |
| 961 | if (empty($this->parts['from'])) { |
| 962 | return false; |
| 963 | } |
| 964 | |
| 965 | $needsSubQuery = false; |
| 966 | $subquery = ''; |
| 967 | $map = reset($this->_aliasMap); |
| 968 | $table = $map['table']; |
| 969 | $rootAlias = key($this->_aliasMap); |
| 970 | |
| 971 | if ( ! empty($this->parts['limit']) && $this->needsSubquery && $table->getAttribute(Doctrine::ATTR_QUERY_LIMIT) == Doctrine::LIMIT_RECORDS) { |
| 972 | $this->isLimitSubqueryUsed = true; |
| 973 | $needsSubQuery = true; |
| 974 | } |
| 975 | |
| 976 | $sql = array(); |
| 977 | foreach ($this->_aliasMap as $alias => $map) { |
| 978 | $fieldSql = $this->processPendingFields($alias); |
| 979 | if ( ! empty($fieldSql)) { |
| 980 | $sql[] = $fieldSql; |
| 981 | } |
| 982 | } |
| 983 | if ( ! empty($sql)) { |
| 984 | array_unshift($this->parts['select'], implode(', ', $sql)); |
| 985 | } |
| 986 | |
| 987 | $this->pendingFields = array(); |
| 988 | |
| 989 | // build the basic query |
| 990 | $q = $this->getQueryBase(); |
| 991 | $q .= $this->buildFromPart(); |
| 992 | |
| 993 | if ( ! empty($this->parts['set'])) { |
| 994 | $q .= ' SET ' . implode(', ', $this->parts['set']); |
| 995 | } |
| 996 | |
| 997 | |
| 998 | $string = $this->applyInheritance(); |
| 999 | |
| 1000 | // apply inheritance to WHERE part |
| 1001 | if ( ! empty($string)) { |
| 1002 | if (substr($string, 0, 1) === '(' && substr($string, -1) === ')') { |
| 1003 | $this->parts['where'][] = $string; |
| 1004 | } else { |
| 1005 | $this->parts['where'][] = '(' . $string . ')'; |
| 1006 | } |
| 1007 | } |
| 1008 | |
| 1009 | |
| 1010 | $modifyLimit = true; |
| 1011 | if ( ! empty($this->parts['limit']) || ! empty($this->parts['offset'])) { |
| 1012 | |
| 1013 | if ($needsSubQuery) { |
| 1014 | $subquery = $this->getLimitSubquery(); |
| 1015 | |
| 1016 | |
| 1017 | switch (strtolower($this->_conn->getName())) { |
| 1018 | case 'mysql': |
| 1019 | // mysql doesn't support LIMIT in subqueries |
| 1020 | $list = $this->_conn->execute($subquery, $params)->fetchAll(Doctrine::FETCH_COLUMN); |
| 1021 | $subquery = implode(', ', array_map(array($this->_conn, 'quote'), $list)); |
| 1022 | break; |
| 1023 | case 'pgsql': |
| 1024 | // pgsql needs special nested LIMIT subquery |
| 1025 | $subquery = 'SELECT doctrine_subquery_alias.' . $table->getIdentifier(). ' FROM (' . $subquery . ') AS doctrine_subquery_alias'; |
| 1026 | break; |
| 1027 | } |
| 1028 | |
| 1029 | $field = $this->getTableAlias($rootAlias) . '.' . $table->getIdentifier(); |
| 1030 | |
| 1031 | // only append the subquery if it actually contains something |
| 1032 | if ($subquery !== '') { |
| 1033 | array_unshift($this->parts['where'], $this->_conn->quoteIdentifier($field) . ' IN (' . $subquery . ')'); |
| 1034 | } |
| 1035 | |
| 1036 | $modifyLimit = false; |
| 1037 | } |
| 1038 | } |
| 1039 | |
| 1040 | $q .= ( ! empty($this->parts['where']))? ' WHERE ' . implode(' AND ', $this->parts['where']) : ''; |
| 1041 | $q .= ( ! empty($this->parts['groupby']))? ' GROUP BY ' . implode(', ', $this->parts['groupby']) : ''; |
| 1042 | $q .= ( ! empty($this->parts['having']))? ' HAVING ' . implode(' AND ', $this->parts['having']): ''; |
| 1043 | $q .= ( ! empty($this->parts['orderby']))? ' ORDER BY ' . implode(', ', $this->parts['orderby']) : ''; |
| 1044 | |
| 1045 | if ($modifyLimit) { |
| 1046 | |
| 1047 | $q = $this->_conn->modifyLimitQuery($q, $this->parts['limit'], $this->parts['offset']); |
| 1048 | } |
| 1049 | |
| 1050 | // return to the previous state |
| 1051 | if ( ! empty($string)) { |
| 1052 | array_pop($this->parts['where']); |
| 1053 | } |
| 1054 | if ($needsSubQuery) { |
| 1055 | array_shift($this->parts['where']); |
| 1056 | } |
| 1057 | $this->_sql = $q; |
| 1058 | |
| 1059 | return $q; |
| 1060 | } |
| 1061 | /** |
| 1062 | * getLimitSubquery |
| 1063 | * this is method is used by the record limit algorithm |
| 1064 | * |
| 1065 | * when fetching one-to-many, many-to-many associated data with LIMIT clause |
| 1066 | * an additional subquery is needed for limiting the number of returned records instead |
| 1067 | * of limiting the number of sql result set rows |
| 1068 | * |
| 1069 | * @return string the limit subquery |
| 1070 | */ |
| 1071 | public function getLimitSubquery() |
| 1072 | { |
| 1073 | $map = reset($this->_aliasMap); |
| 1074 | $table = $map['table']; |
| 1075 | $componentAlias = key($this->_aliasMap); |
| 1076 | |
| 1077 | // get short alias |
| 1078 | $alias = $this->getTableAlias($componentAlias); |
| 1079 | $primaryKey = $alias . '.' . $table->getIdentifier(); |
| 1080 | |
| 1081 | // initialize the base of the subquery |
| 1082 | $subquery = 'SELECT DISTINCT ' . $this->_conn->quoteIdentifier($primaryKey); |
| 1083 | |
| 1084 | $driverName = $this->_conn->getAttribute(Doctrine::ATTR_DRIVER_NAME); |
| 1085 | |
| 1086 | |
| 1087 | // pgsql needs the order by fields to be preserved in select clause |
| 1088 | if ($driverName == 'pgsql') { |
| 1089 | foreach ($this->parts['orderby'] as $part) { |
| 1090 | $part = trim($part); |
| 1091 | $e = Doctrine_Tokenizer::bracketExplode($part, ' '); |
| 1092 | $part = trim($e[0]); |
| 1093 | |
| 1094 | if (strpos($part, '.') === false) { |
| 1095 | continue; |
| 1096 | } |
| 1097 | |
| 1098 | // don't add functions |
| 1099 | if (strpos($part, '(') !== false) { |
| 1100 | continue; |
| 1101 | } |
| 1102 | |
| 1103 | // don't add primarykey column (its already in the select clause) |
| 1104 | if ($part !== $primaryKey) { |
| 1105 | $subquery .= ', ' . $part; |
| 1106 | } |
| 1107 | } |
| 1108 | } |
| 1109 | |
| 1110 | if ($driverName == 'mysql' || $driverName == 'pgsql') { |
| 1111 | foreach ($this->_expressionMap as $dqlAlias => $expr) { |
| 1112 | if (isset($expr[1])) { |
| 1113 | $subquery .= ', ' . $expr[0] . ' AS ' . $this->aggregateMap[$dqlAlias]; |
| 1114 | } |
| 1115 | } |
| 1116 | } |
| 1117 | |
| 1118 | |
| 1119 | $subquery .= ' FROM'; |
| 1120 | |
| 1121 | |
| 1122 | foreach ($this->parts['from'] as $part) { |
| 1123 | // preserve LEFT JOINs only if needed |
| 1124 | if (substr($part, 0, 9) === 'LEFT JOIN') { |
| 1125 | $e = explode(' ', $part); |
| 1126 | |
| 1127 | if (empty($this->parts['orderby']) && empty($this->parts['where'])) { |
| 1128 | continue; |
| 1129 | } |
| 1130 | } |
| 1131 | |
| 1132 | $subquery .= ' ' . $part; |
| 1133 | } |
| 1134 | |
| 1135 | // all conditions must be preserved in subquery |
| 1136 | $subquery .= ( ! empty($this->parts['where']))? ' WHERE ' . implode(' AND ', $this->parts['where']) : ''; |
| 1137 | $subquery .= ( ! empty($this->parts['groupby']))? ' GROUP BY ' . implode(', ', $this->parts['groupby']) : ''; |
| 1138 | $subquery .= ( ! empty($this->parts['having']))? ' HAVING ' . implode(' AND ', $this->parts['having']) : ''; |
| 1139 | |
| 1140 | $subquery .= ( ! empty($this->parts['orderby']))? ' ORDER BY ' . implode(', ', $this->parts['orderby']) : ''; |
| 1141 | |
| 1142 | // add driver specific limit clause |
| 1143 | $subquery = $this->_conn->modifyLimitQuery($subquery, $this->parts['limit'], $this->parts['offset']); |
| 1144 | |
| 1145 | $parts = Doctrine_Tokenizer::quoteExplode($subquery, ' ', "'", "'"); |
| 1146 | |
| 1147 | foreach ($parts as $k => $part) { |
| 1148 | if (strpos($part, ' ') !== false) { |
| 1149 | continue; |
| 1150 | } |
| 1151 | |
| 1152 | $part = trim($part, "\"'`"); |
| 1153 | |
| 1154 | if ($this->hasTableAlias($part)) { |
| 1155 | $parts[$k] = $this->_conn->quoteIdentifier($this->generateNewTableAlias($part)); |
| 1156 | continue; |
| 1157 | } |
| 1158 | |
| 1159 | if (strpos($part, '.') === false) { |
| 1160 | continue; |
| 1161 | } |
| 1162 | preg_match_all("/[a-zA-Z0-9_]+\.[a-z0-9_]+/i", $part, $m); |
| 1163 | |
| 1164 | foreach ($m[0] as $match) { |
| 1165 | $e = explode('.', $match); |
| 1166 | $e[0] = $this->generateNewTableAlias($e[0]); |
| 1167 | |
| 1168 | $parts[$k] = str_replace($match, implode('.', $e), $parts[$k]); |
| 1169 | } |
| 1170 | } |
| 1171 | |
| 1172 | if ($driverName == 'mysql' || $driverName == 'pgsql') { |
| 1173 | foreach ($parts as $k => $part) { |
| 1174 | if (strpos($part, "'") !== false) { |
| 1175 | continue; |
| 1176 | } |
| 1177 | if (strpos($part, '__') == false) { |
| 1178 | continue; |
| 1179 | } |
| 1180 | |
| 1181 | preg_match_all("/[a-zA-Z0-9_]+\_\_[a-z0-9_]+/i", $part, $m); |
| 1182 | |
| 1183 | foreach ($m[0] as $match) { |
| 1184 | $e = explode('__', $match); |
| 1185 | $e[0] = $this->generateNewTableAlias($e[0]); |
| 1186 | |
| 1187 | $parts[$k] = str_replace($match, implode('__', $e), $parts[$k]); |
| 1188 | } |
| 1189 | } |
| 1190 | } |
| 1191 | |
| 1192 | $subquery = implode(' ', $parts); |
| 1193 | return $subquery; |
| 1194 | } |
| 1195 | /** |
| 1196 | * tokenizeQuery |
| 1197 | * splits the given dql query into an array where keys |
| 1198 | * represent different query part names and values are |
| 1199 | * arrays splitted using sqlExplode method |
| 1200 | * |
| 1201 | * example: |
| 1202 | * |
| 1203 | * parameter: |
| 1204 | * $query = "SELECT u.* FROM User u WHERE u.name LIKE ?" |
| 1205 | * returns: |
| 1206 | * array('select' => array('u.*'), |
| 1207 | * 'from' => array('User', 'u'), |
| 1208 | * 'where' => array('u.name', 'LIKE', '?')) |
| 1209 | * |
| 1210 | * @param string $query DQL query |
| 1211 | * @throws Doctrine_Query_Exception if some generic parsing error occurs |
| 1212 | * @return array an array containing the query string parts |
| 1213 | */ |
| 1214 | public function tokenizeQuery($query) |
| 1215 | { |
| 1216 | $e = Doctrine_Tokenizer::sqlExplode($query, ' '); |
| 1217 | |
| 1218 | foreach ($e as $k=>$part) { |
| 1219 | $part = trim($part); |
| 1220 | switch (strtolower($part)) { |
| 1221 | case 'delete': |
| 1222 | case 'update': |
| 1223 | case 'select': |
| 1224 | case 'set': |
| 1225 | case 'from': |
| 1226 | case 'where': |
| 1227 | case 'limit': |
| 1228 | case 'offset': |
| 1229 | case 'having': |
| 1230 | $p = $part; |
| 1231 | $parts[$part] = array(); |
| 1232 | break; |
| 1233 | case 'order': |
| 1234 | case 'group': |
| 1235 | $i = ($k + 1); |
| 1236 | if (isset($e[$i]) && strtolower($e[$i]) === 'by') { |
| 1237 | $p = $part; |
| 1238 | $parts[$part] = array(); |
| 1239 | } else { |
| 1240 | $parts[$p][] = $part; |
| 1241 | } |
| 1242 | break; |
| 1243 | case 'by': |
| 1244 | continue; |
| 1245 | default: |
| 1246 | if ( ! isset($p)) { |
| 1247 | throw new Doctrine_Query_Exception("Couldn't parse query."); |
| 1248 | } |
| 1249 | |
| 1250 | $parts[$p][] = $part; |
| 1251 | } |
| 1252 | } |
| 1253 | return $parts; |
| 1254 | } |
| 1255 | /** |
| 1256 | * DQL PARSER |
| 1257 | * parses a DQL query |
| 1258 | * first splits the query in parts and then uses individual |
| 1259 | * parsers for each part |
| 1260 | * |
| 1261 | * @param string $query DQL query |
| 1262 | * @param boolean $clear whether or not to clear the aliases |
| 1263 | * @throws Doctrine_Query_Exception if some generic parsing error occurs |
| 1264 | * @return Doctrine_Query |
| 1265 | */ |
| 1266 | public function parseQuery($query, $clear = true) |
| 1267 | { |
| 1268 | if ($clear) { |
| 1269 | $this->clear(); |
| 1270 | } |
| 1271 | |
| 1272 | $query = trim($query); |
| 1273 | $query = str_replace("\n", ' ', $query); |
| 1274 | $query = str_replace("\r", ' ', $query); |
| 1275 | |
| 1276 | $parts = $this->tokenizeQuery($query); |
| 1277 | |
| 1278 | foreach($parts as $k => $part) { |
| 1279 | $part = implode(' ', $part); |
| 1280 | $k = strtolower($k); |
| 1281 | switch ($k) { |
| 1282 | case 'create': |
| 1283 | $this->type = self::CREATE; |
| 1284 | break; |
| 1285 | case 'insert': |
| 1286 | $this->type = self::INSERT; |
| 1287 | break; |
| 1288 | case 'delete': |
| 1289 | $this->type = self::DELETE; |
| 1290 | break; |
| 1291 | case 'select': |
| 1292 | $this->type = self::SELECT; |
| 1293 | $this->parseQueryPart($k, $part); |
| 1294 | break; |
| 1295 | case 'update': |
| 1296 | $this->type = self::UPDATE; |
| 1297 | $k = 'from'; |
| 1298 | case 'from': |
| 1299 | $this->parseQueryPart($k, $part); |
| 1300 | break; |
| 1301 | case 'set': |
| 1302 | $this->parseQueryPart($k, $part, true); |
| 1303 | break; |
| 1304 | case 'group': |
| 1305 | case 'order': |
| 1306 | $k .= 'by'; |
| 1307 | case 'where': |
| 1308 | case 'having': |
| 1309 | case 'limit': |
| 1310 | case 'offset': |
| 1311 | $this->parseQueryPart($k, $part); |
| 1312 | break; |
| 1313 | } |
| 1314 | } |
| 1315 | |
| 1316 | return $this; |
| 1317 | } |
| 1318 | |
| 1319 | public function load($path, $loadFields = true) |
| 1320 | { |
| 1321 | $e = Doctrine_Tokenizer::quoteExplode($path, ' INDEXBY '); |
| 1322 | |
| 1323 | $mapWith = null; |
| 1324 | if (count($e) > 1) { |
| 1325 | $mapWith = trim($e[1]); |
| 1326 | |
| 1327 | $path = $e[0]; |
| 1328 | } |
| 1329 | |
| 1330 | // parse custom join conditions |
| 1331 | $e = explode(' ON ', $path); |
| 1332 | |
| 1333 | $joinCondition = ''; |
| 1334 | |
| 1335 | if (count($e) > 1) { |
| 1336 | $joinCondition = $e[1]; |
| 1337 | $overrideJoin = true; |
| 1338 | $path = $e[0]; |
| 1339 | } else { |
| 1340 | $e = explode(' WITH ', $path); |
| 1341 | |
| 1342 | if (count($e) > 1) { |
| 1343 | $joinCondition = $e[1]; |
| 1344 | $path = $e[0]; |
| 1345 | } |
| 1346 | $overrideJoin = false; |
| 1347 | } |
| 1348 | |
| 1349 | $tmp = explode(' ', $path); |
| 1350 | $componentAlias = $originalAlias = (count($tmp) > 1) ? end($tmp) : null; |
| 1351 | |
| 1352 | $e = preg_split("/[.:]/", $tmp[0], -1); |
| 1353 | |
| 1354 | $fullPath = $tmp[0]; |
| 1355 | $prevPath = ''; |
| 1356 | $fullLength = strlen($fullPath); |
| 1357 | |
| 1358 | if (isset($this->_aliasMap[$e[0]])) { |
| 1359 | $table = $this->_aliasMap[$e[0]]['table']; |
| 1360 | $componentAlias = $e[0]; |
| 1361 | |
| 1362 | $prevPath = $parent = array_shift($e); |
| 1363 | } |
| 1364 | |
| 1365 | foreach ($e as $key => $name) { |
| 1366 | // get length of the previous path |
| 1367 | $length = strlen($prevPath); |
| 1368 | |
| 1369 | // build the current component path |
| 1370 | $prevPath = ($prevPath) ? $prevPath . '.' . $name : $name; |
| 1371 | |
| 1372 | $delimeter = substr($fullPath, $length, 1); |
| 1373 | |
| 1374 | // if an alias is not given use the current path as an alias identifier |
| 1375 | if (strlen($prevPath) === $fullLength && isset($originalAlias)) { |
| 1376 | $componentAlias = $originalAlias; |
| 1377 | } else { |
| 1378 | $componentAlias = $prevPath; |
| 1379 | } |
| 1380 | |
| 1381 | // if the current alias already exists, skip it |
| 1382 | if (isset($this->_aliasMap[$componentAlias])) { |
| 1383 | continue; |
| 1384 | } |
| 1385 | |
| 1386 | if ( ! isset($table)) { |
| 1387 | // process the root of the path |
| 1388 | |
| 1389 | $table = $this->loadRoot($name, $componentAlias); |
| 1390 | } else { |
| 1391 | $join = ($delimeter == ':') ? 'INNER JOIN ' : 'LEFT JOIN '; |
| 1392 | |
| 1393 | $relation = $table->getRelation($name); |
| 1394 | $localTable = $table; |
| 1395 | |
| 1396 | $table = $relation->getTable(); |
| 1397 | $this->_aliasMap[$componentAlias] = array('table' => $table, |
| 1398 | 'parent' => $parent, |
| 1399 | 'relation' => $relation, |
| 1400 | 'map' => null); |
| 1401 | if ( ! $relation->isOneToOne()) { |
| 1402 | $this->needsSubquery = true; |
| 1403 | } |
| 1404 | |
| 1405 | $localAlias = $this->getTableAlias($parent, $table->getTableName()); |
| 1406 | $foreignAlias = $this->getTableAlias($componentAlias, $relation->getTable()->getTableName()); |
| 1407 | $localSql = $this->_conn->quoteIdentifier($table->getTableName()) |
| 1408 | . ' ' |
| 1409 | . $this->_conn->quoteIdentifier($localAlias); |
| 1410 | |
| 1411 | $foreignSql = $this->_conn->quoteIdentifier($relation->getTable()->getTableName()) |
| 1412 | . ' ' |
| 1413 | . $this->_conn->quoteIdentifier($foreignAlias); |
| 1414 | |
| 1415 | $map = $relation->getTable()->inheritanceMap; |
| 1416 | |
| 1417 | if ( ! $loadFields || ! empty($map) || $joinCondition) { |
| 1418 | $this->subqueryAliases[] = $foreignAlias; |
| 1419 | } |
| 1420 | |
| 1421 | if ($relation instanceof Doctrine_Relation_Association) { |
| 1422 | $asf = $relation->getAssociationTable(); |
| 1423 | |
| 1424 | $assocTableName = $asf->getTableName(); |
| 1425 | |
| 1426 | if ( ! $loadFields || ! empty($map) || $joinCondition) { |
| 1427 | $this->subqueryAliases[] = $assocTableName; |
| 1428 | } |
| 1429 | |
| 1430 | $assocPath = $prevPath . '.' . $asf->getComponentName(); |
| 1431 | |
| 1432 | $this->_aliasMap[$assocPath] = array('parent' => $prevPath, 'relation' => $relation, 'table' => $asf); |
| 1433 | |
| 1434 | $assocAlias = $this->getTableAlias($assocPath, $asf->getTableName()); |
| 1435 | |
| 1436 | $queryPart = $join . $assocTableName . ' ' . $assocAlias; |
| 1437 | |
| 1438 | $queryPart .= ' ON ' . $localAlias |
| 1439 | . '.' |
| 1440 | . $localTable->getIdentifier() |
| 1441 | . ' = ' |
| 1442 | . $assocAlias . '.' . $relation->getLocal(); |
| 1443 | |
| 1444 | if ($relation->isEqual()) { |
| 1445 | // equal nest relation needs additional condition |
| 1446 | $queryPart .= ' OR ' . $localAlias |
| 1447 | . '.' |
| 1448 | . $table->getColumnName($table->getIdentifier()) |
| 1449 | . ' = ' |
| 1450 | . $assocAlias . '.' . $relation->getForeign(); |
| 1451 | } |
| 1452 | |
| 1453 | $this->parts['from'][] = $queryPart; |
| 1454 | |
| 1455 | $queryPart = $join . $foreignSql; |
| 1456 | |
| 1457 | if ( ! $overrideJoin) { |
| 1458 | $queryPart .= ' ON '; |
| 1459 | |
| 1460 | if ($relation->isEqual()) { |
| 1461 | $queryPart .= '('; |
| 1462 | } |
| 1463 | |
| 1464 | $queryPart .= $this->_conn->quoteIdentifier($foreignAlias . '.' . $relation->getTable()->getIdentifier()) |
| 1465 | . ' = ' |
| 1466 | . $this->_conn->quoteIdentifier($assocAlias . '.' . $relation->getForeign()); |
| 1467 | |
| 1468 | if ($relation->isEqual()) { |
| 1469 | $queryPart .= ' OR ' |
| 1470 | . $this->_conn->quoteIdentifier($foreignAlias . '.' . $table->getColumnName($table->getIdentifier())) |
| 1471 | . ' = ' |
| 1472 | . $this->_conn->quoteIdentifier($assocAlias . '.' . $relation->getLocal()) |
| 1473 | . ') AND ' |
| 1474 | . $this->_conn->quoteIdentifier($foreignAlias . '.' . $table->getIdentifier()) |
| 1475 | . ' != ' |
| 1476 | . $this->_conn->quoteIdentifier($localAlias . '.' . $table->getIdentifier()); |
| 1477 | } |
| 1478 | } |
| 1479 | } else { |
| 1480 | |
| 1481 | $queryPart = $join . $foreignSql; |
| 1482 | |
| 1483 | if ( ! $overrideJoin) { |
| 1484 | $queryPart .= ' ON ' |
| 1485 | . $this->_conn->quoteIdentifier($localAlias . '.' . $relation->getLocal()) |
| 1486 | . ' = ' |
| 1487 | . $this->_conn->quoteIdentifier($foreignAlias . '.' . $relation->getForeign()); |
| 1488 | } |
| 1489 | |
| 1490 | } |
| 1491 | $this->parts['from'][$componentAlias] = $queryPart; |
| 1492 | if ( ! empty($joinCondition)) { |
| 1493 | $this->_pendingJoinConditions[$componentAlias] = $joinCondition; |
| 1494 | } |
| 1495 | } |
| 1496 | if ($loadFields) { |
| 1497 | |
| 1498 | $restoreState = false; |
| 1499 | // load fields if necessary |
| 1500 | if ($loadFields && empty($this->_dqlParts['select'])) { |
| 1501 | $this->pendingFields[$componentAlias] = array('*'); |
| 1502 | } |
| 1503 | } |
| 1504 | $parent = $prevPath; |
| 1505 | } |
| 1506 | |
| 1507 | $table = $this->_aliasMap[$componentAlias]['table']; |
| 1508 | |
| 1509 | $indexBy = null; |
| 1510 | |
| 1511 | if (isset($mapWith)) { |
| 1512 | $e = explode('.', $mapWith); |
| 1513 | |
| 1514 | if (isset($e[1])) { |
| 1515 | $indexBy = $e[1]; |
| 1516 | } |
| 1517 | } elseif ($table->getBoundQueryPart('indexBy') !== null) { |
| 1518 | $indexBy = $table->getBoundQueryPart('indexBy'); |
| 1519 | } |
| 1520 | |
| 1521 | if ($indexBy !== null) { |
| 1522 | if ( ! $table->hasColumn($indexBy)) { |
| 1523 | throw new Doctrine_Query_Exception("Couldn't use key mapping. Column " . $indexBy . " does not exist."); |
| 1524 | } |
| 1525 | |
| 1526 | $this->_aliasMap[$componentAlias]['map'] = $table->getColumnName($indexBy); |
| 1527 | } |
| 1528 | return $this->_aliasMap[$componentAlias]; |
| 1529 | } |
| 1530 | |
| 1531 | /** |
| 1532 | * loadRoot |
| 1533 | * |
| 1534 | * @param string $name |
| 1535 | * @param string $componentAlias |
| 1536 | */ |
| 1537 | public function loadRoot($name, $componentAlias) |
| 1538 | { |
| 1539 | // get the connection for the component |
| 1540 | $this->_conn = Doctrine_Manager::getInstance() |
| 1541 | ->getConnectionForComponent($name); |
| 1542 | |
| 1543 | $table = $this->_conn->getTable($name); |
| 1544 | $tableName = $table->getTableName(); |
| 1545 | |
| 1546 | // get the short alias for this table |
| 1547 | $tableAlias = $this->getTableAlias($componentAlias, $tableName); |
| 1548 | // quote table name |
| 1549 | $queryPart = $this->_conn->quoteIdentifier($tableName); |
| 1550 | |
| 1551 | if ($this->type === self::SELECT) { |
| 1552 | $queryPart .= ' ' . $this->_conn->quoteIdentifier($tableAlias); |
| 1553 | } |
| 1554 | |
| 1555 | $this->parts['from'][] = $queryPart; |
| 1556 | $this->tableAliases[$tableAlias] = $componentAlias; |
| 1557 | $this->_aliasMap[$componentAlias] = array('table' => $table, 'map' => null); |
| 1558 | |
| 1559 | return $table; |
| 1560 | } |
| 1561 | /** |
| 1562 | * count |
| 1563 | * fetches the count of the query |
| 1564 | * |
| 1565 | * This method executes the main query without all the |
| 1566 | * selected fields, ORDER BY part, LIMIT part and OFFSET part. |
| 1567 | * |
| 1568 | * Example: |
| 1569 | * Main query: |
| 1570 | * SELECT u.*, p.phonenumber FROM User u |
| 1571 | * LEFT JOIN u.Phonenumber p |
| 1572 | * WHERE p.phonenumber = '123 123' LIMIT 10 |
| 1573 | * |
| 1574 | * The modified DQL query: |
| 1575 | * SELECT COUNT(DISTINCT u.id) FROM User u |
| 1576 | * LEFT JOIN u.Phonenumber p |
| 1577 | * WHERE p.phonenumber = '123 123' |
| 1578 | * |
| 1579 | * @param array $params an array of prepared statement parameters |
| 1580 | * @return integer the count of this query |
| 1581 | */ |
| 1582 | public function count($params = array()) |
| 1583 | { |
| 1584 | $this->getQuery(); |
| 1585 | |
| 1586 | // initialize temporary variables |
| 1587 | $where = $this->parts['where']; |
| 1588 | $having = $this->parts['having']; |
| 1589 | $groupby = $this->parts['groupby']; |
| 1590 | $map = reset($this->_aliasMap); |
| 1591 | $componentAlias = key($this->_aliasMap); |
| 1592 | $table = $map['table']; |
| 1593 | |
| 1594 | // build the query base |
| 1595 | $q = 'SELECT COUNT(DISTINCT ' . $this->getTableAlias($componentAlias) |
| 1596 | . '.' . implode(',', (array) $table->getIdentifier()) |
| 1597 | . ') AS num_results'; |
| 1598 | |
| 1599 | foreach ($this->parts['select'] as $field) { |
| 1600 | if (strpos($field, '(') !== false) { |
| 1601 | $q .= ', ' . $field; |
| 1602 | } |
| 1603 | } |
| 1604 | |
| 1605 | $q .= ' FROM ' . $this->buildFromPart(); |
| 1606 | |
| 1607 | // append column aggregation inheritance (if needed) |
| 1608 | $string = $this->applyInheritance(); |
| 1609 | |
| 1610 | if ( ! empty($string)) { |
| 1611 | $where[] = $string; |
| 1612 | } |
| 1613 | // append conditions |
| 1614 | $q .= ( ! empty($where)) ? ' WHERE ' . implode(' AND ', $where) : ''; |
| 1615 | $q .= ( ! empty($groupby)) ? ' GROUP BY ' . implode(', ', $groupby) : ''; |
| 1616 | $q .= ( ! empty($having)) ? ' HAVING ' . implode(' AND ', $having): ''; |
| 1617 | |
| 1618 | if ( ! is_array($params)) { |
| 1619 | $params = array($params); |
| 1620 | } |
| 1621 | // append parameters |
| 1622 | $params = array_merge($this->_params['where'], $this->_params['having'], $params); |
| 1623 | |
| 1624 | $results = $this->getConnection()->fetchAll($q, $params); |
| 1625 | |
| 1626 | if (count($results) > 1) { |
| 1627 | $count = 0; |
| 1628 | foreach ($results as $result) { |
| 1629 | $count += $result['num_results']; |
| 1630 | } |
| 1631 | } else { |
| 1632 | $count = isset($results[0]) ? $results[0]['num_results']:0; |
| 1633 | } |
| 1634 | |
| 1635 | return (int) $count; |
| 1636 | } |
| 1637 | |
| 1638 | /** |
| 1639 | * query |
| 1640 | * query the database with DQL (Doctrine Query Language) |
| 1641 | * |
| 1642 | * @param string $query DQL query |
| 1643 | * @param array $params prepared statement parameters |
| 1644 | * @param int $hydrationMode Doctrine::FETCH_ARRAY or Doctrine::FETCH_RECORD |
| 1645 | * @see Doctrine::FETCH_* constants |
| 1646 | * @return mixed |
| 1647 | */ |
| 1648 | public function query($query, $params = array(), $hydrationMode = null) |
| 1649 | { |
| 1650 | $this->parseQuery($query); |
| 1651 | |
| 1652 | return $this->execute($params, $hydrationMode); |
| 1653 | } |
| 1654 | |
| 1655 | /** |
| 1656 | * Copies a Doctrine_Query object. |
| 1657 | * |
| 1658 | * @param Doctrine_Query Doctrine query instance. |
| 1659 | * If ommited the instance itself will be used as source. |
| 1660 | * @return Doctrine_Query Copy of the Doctrine_Query instance. |
| 1661 | */ |
| 1662 | public function copy(Doctrine_Query $query = null) |
| 1663 | { |
| 1664 | if ( ! $query) { |
| 1665 | $query = $this; |
| 1666 | } |
| 1667 | |
| 1668 | $new = new Doctrine_Query(); |
| 1669 | $new->_dqlParts = $query->_dqlParts; |
| 1670 | $new->_params = $query->_params; |
| 1671 | $new->_hydrationMode = $query->_hydrationMode; |
| 1672 | |
| 1673 | return $new; |
| 1674 | } |
| 1675 | |
| 1676 | /** |
| 1677 | * Frees the resources used by the query object. It especially breaks a |
| 1678 | * cyclic reference between the query object and it's parsers. This enables |
| 1679 | * PHP's current GC to reclaim the memory. |
| 1680 | * This method can therefore be used to reduce memory usage when creating a lot |
| 1681 | * of query objects during a request. |
| 1682 | * |
| 1683 | * @return Doctrine_Query this object |
| 1684 | */ |
| 1685 | public function free() |
| 1686 | { |
| 1687 | $this->reset(); |
| 1688 | $this->_parsers = array(); |
| 1689 | $this->_dqlParts = array(); |
| 1690 | $this->_enumParams = array(); |
| 1691 | } |
| 1692 | } |