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<?php
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/*
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* $Id: Unique.php 7490 2010-03-29 19:53:27Z jwage $
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.doctrine-project.org>.
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*/
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/**
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* Doctrine_Validator_Unique
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*
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* @package Doctrine
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* @subpackage Validator
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @link www.doctrine-project.org
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* @since 1.0
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* @version $Revision: 7490 $
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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*/
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class Doctrine_Validator_Unique extends Doctrine_Validator_Driver
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{
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/**
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* checks if given value is unique
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*
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* @param mixed $value
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* @return boolean
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*/
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public function validate($value)
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{
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if (is_null($value)) {
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return true;
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}
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$table = $this->invoker->getTable();
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$conn = $table->getConnection();
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$pks = $table->getIdentifierColumnNames();
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if (is_array($pks)) {
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for ($i = 0, $l = count($pks); $i < $l; $i++) {
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$pks[$i] = $conn->quoteIdentifier($pks[$i]);
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}
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$pks = implode(', ', $pks);
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}
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$sql = 'SELECT ' . $pks . ' FROM ' . $conn->quoteIdentifier($table->getTableName()) . ' WHERE ';
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if (is_array($this->field)) {
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foreach ($this->field as $k => $v) {
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$this->field[$k] = $conn->quoteIdentifier($table->getColumnName($v));
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}
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$sql .= implode(' = ? AND ', $this->field) . ' = ?';
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$values = $value;
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} else {
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$sql .= $conn->quoteIdentifier($table->getColumnName($this->field)) . ' = ?';
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$values = array();
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$values[] = $value;
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}
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// If the record is not new we need to add primary key checks because its ok if the
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// unique value already exists in the database IF the record in the database is the same
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// as the one that is validated here.
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$state = $this->invoker->state();
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if ( ! ($state == Doctrine_Record::STATE_TDIRTY || $state == Doctrine_Record::STATE_TCLEAN)) {
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foreach ((array) $table->getIdentifierColumnNames() as $pk) {
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$sql .= ' AND ' . $conn->quoteIdentifier($pk) . ' != ?';
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$pkFieldName = $table->getFieldName($pk);
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$values[] = $this->invoker->$pkFieldName;
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}
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}
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if (isset($this->args) && is_array($this->args) && isset($this->args['where'])) {
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$sql .= ' AND ' . $this->args['where'];
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}
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$stmt = $table->getConnection()->getDbh()->prepare($sql);
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$stmt->execute($values);
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return ( ! is_array($stmt->fetch()));
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}
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}
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