| 1 | <?php |
| 2 | /* |
| 3 | * $Id: From.php 2702 2007-10-03 21:43:22Z Jonathan.Wage $ |
| 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_Part"); |
| 22 | /** |
| 23 | * Doctrine_Query_From |
| 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: 2702 $ |
| 31 | * @author Konsta Vesterinen <kvesteri@cc.hut.fi> |
| 32 | */ |
| 33 | class Doctrine_Query_From extends Doctrine_Query_Part |
| 34 | { |
| 35 | /** |
| 36 | * DQL FROM PARSER |
| 37 | * parses the from part of the query string |
| 38 | |
| 39 | * @param string $str |
| 40 | * @return void |
| 41 | */ |
| 42 | public function parse($str) |
| 43 | { |
| 44 | $str = trim($str); |
| 45 | $parts = Doctrine_Tokenizer::bracketExplode($str, 'JOIN'); |
| 46 | |
| 47 | $operator = false; |
| 48 | |
| 49 | switch (trim($parts[0])) { |
| 50 | case 'INNER': |
| 51 | $operator = ':'; |
| 52 | case 'LEFT': |
| 53 | array_shift($parts); |
| 54 | break; |
| 55 | } |
| 56 | |
| 57 | |
| 58 | $last = ''; |
| 59 | |
| 60 | foreach ($parts as $k => $part) { |
| 61 | $part = trim($part); |
| 62 | |
| 63 | if (empty($part)) { |
| 64 | continue; |
| 65 | } |
| 66 | |
| 67 | $e = explode(' ', $part); |
| 68 | |
| 69 | if (end($e) == 'INNER' || end($e) == 'LEFT') { |
| 70 | $last = array_pop($e); |
| 71 | } |
| 72 | $part = implode(' ', $e); |
| 73 | |
| 74 | foreach (Doctrine_Tokenizer::bracketExplode($part, ',') as $reference) { |
| 75 | $reference = trim($reference); |
| 76 | $e = explode(' ', $reference); |
| 77 | $e2 = explode('.', $e[0]); |
| 78 | |
| 79 | if ($operator) { |
| 80 | $e[0] = array_shift($e2) . $operator . implode('.', $e2); |
| 81 | } |
| 82 | |
| 83 | $table = $this->query->load(implode(' ', $e)); |
| 84 | } |
| 85 | |
| 86 | $operator = ($last == 'INNER') ? ':' : '.'; |
| 87 | } |
| 88 | return null; |
| 89 | } |
| 90 | } |