| 1 | <?php |
| 2 | /* |
| 3 | * $Id: Unique.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.org>. |
| 20 | */ |
| 21 | |
| 22 | /** |
| 23 | * Doctrine_Validator_Unique |
| 24 | * |
| 25 | * @package Doctrine |
| 26 | * @subpackage Validator |
| 27 | * @license http://www.opensource.org/licenses/lgpl-license.php LGPL |
| 28 | * @link www.phpdoctrine.org |
| 29 | * @since 1.0 |
| 30 | * @version $Revision: 2702 $ |
| 31 | * @author Konsta Vesterinen <kvesteri@cc.hut.fi> |
| 32 | */ |
| 33 | class Doctrine_Validator_Unique |
| 34 | { |
| 35 | /** |
| 36 | * checks if given value is unique |
| 37 | * |
| 38 | * @param mixed $value |
| 39 | * @return boolean |
| 40 | */ |
| 41 | public function validate($value) |
| 42 | { |
| 43 | $table = $this->invoker->getTable(); |
| 44 | $pks = $table->getIdentifier(); |
| 45 | |
| 46 | if ( is_array($pks) ) { |
| 47 | $pks = join(',', $pks); |
| 48 | } |
| 49 | |
| 50 | $sql = 'SELECT ' . $pks . ' FROM ' . $table->getTableName() . ' WHERE ' . $this->field . ' = ?'; |
| 51 | |
| 52 | $values = array(); |
| 53 | $values[] = $value; |
| 54 | |
| 55 | // If the record is not new we need to add primary key checks because its ok if the |
| 56 | // unique value already exists in the database IF the record in the database is the same |
| 57 | // as the one that is validated here. |
| 58 | $state = $this->invoker->state(); |
| 59 | if ( ! ($state == Doctrine_Record::STATE_TDIRTY || $state == Doctrine_Record::STATE_TCLEAN)) { |
| 60 | foreach ((array) $table->getIdentifier() as $pk) { |
| 61 | $sql .= " AND {$pk} != ?"; |
| 62 | $values[] = $this->invoker->$pk; |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | $stmt = $table->getConnection()->getDbh()->prepare($sql); |
| 67 | $stmt->execute($values); |
| 68 | |
| 69 | return ( ! is_array($stmt->fetch())); |
| 70 | } |
| 71 | } |