| 1 | <?php |
| 2 | /* |
| 3 | * $Id: Complex.php 3212 2007-11-24 18:58:33Z 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_Hook_Parser'); |
| 22 | /** |
| 23 | * Doctrine_Hook_Parser_Complex |
| 24 | * |
| 25 | * @package Doctrine |
| 26 | * @subpackage Hook |
| 27 | * @license http://www.opensource.org/licenses/lgpl-license.php LGPL |
| 28 | * @link www.phpdoctrine.org |
| 29 | * @since 1.0 |
| 30 | * @version $Revision: 3212 $ |
| 31 | * @author Konsta Vesterinen <kvesteri@cc.hut.fi> |
| 32 | */ |
| 33 | abstract class Doctrine_Hook_Parser_Complex extends Doctrine_Hook_Parser |
| 34 | { |
| 35 | protected $_tokenizer; |
| 36 | |
| 37 | /** |
| 38 | * Constructor. |
| 39 | */ |
| 40 | public function __construct() |
| 41 | { |
| 42 | $this->_tokenizer = new Doctrine_Query_Tokenizer(); |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * parse |
| 47 | * Parses given field and field value to DQL condition |
| 48 | * and parameters. This method should always return |
| 49 | * prepared statement conditions (conditions that use |
| 50 | * placeholders instead of literal values). |
| 51 | * |
| 52 | * @param string $alias component alias |
| 53 | * @param string $field the field name |
| 54 | * @param mixed $value the value of the field |
| 55 | * @return void |
| 56 | */ |
| 57 | public function parse($alias, $field, $value) |
| 58 | { |
| 59 | $this->condition = $this->parseClause($alias, $field, $value); |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * parseClause |
| 64 | * |
| 65 | * @param string $alias component alias |
| 66 | * @param string $field the field name |
| 67 | * @param mixed $value the value of the field |
| 68 | * @return void |
| 69 | */ |
| 70 | public function parseClause($alias, $field, $value) |
| 71 | { |
| 72 | $parts = $this->_tokenizer->quoteExplode($value, ' AND '); |
| 73 | |
| 74 | if (count($parts) > 1) { |
| 75 | $ret = array(); |
| 76 | foreach ($parts as $part) { |
| 77 | $ret[] = $this->parseSingle($alias, $field, $part); |
| 78 | } |
| 79 | |
| 80 | $r = implode(' AND ', $ret); |
| 81 | } else { |
| 82 | $parts = $this->_tokenizer->quoteExplode($value, ' OR '); |
| 83 | if (count($parts) > 1) { |
| 84 | $ret = array(); |
| 85 | foreach ($parts as $part) { |
| 86 | $ret[] = $this->parseClause($alias, $field, $part); |
| 87 | } |
| 88 | |
| 89 | $r = implode(' OR ', $ret); |
| 90 | } else { |
| 91 | $ret = $this->parseSingle($alias, $field, $parts[0]); |
| 92 | return $ret; |
| 93 | } |
| 94 | } |
| 95 | return '(' . $r . ')'; |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * parseSingle |
| 100 | * |
| 101 | * @param string $alias component alias |
| 102 | * @param string $field the field name |
| 103 | * @param mixed $value the value of the field |
| 104 | * @return void |
| 105 | */ |
| 106 | abstract public function parseSingle($alias, $field, $value); |
| 107 | } |