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<?php
/*
* $Id: Unique.php 10831 2013-05-29 19:32:17Z btowles $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.doctrine-project.org>.
*/
/**
* Doctrine_Validator_Unique
*
* @package Doctrine
* @subpackage Validator
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.doctrine-project.org
* @since 1.0
* @version $Revision: 7490 $
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
*/
class Doctrine_Validator_Unique extends Doctrine_Validator_Driver
{
/**
* checks if given value is unique
*
* @param mixed $value
* @return boolean
*/
public function validate($value)
{
if (is_null($value)) {
return true;
}
$table = $this->invoker->getTable();
$conn = $table->getConnection();
$pks = $table->getIdentifierColumnNames();
if (is_array($pks)) {
for ($i = 0, $l = count($pks); $i < $l; $i++) {
$pks[$i] = $conn->quoteIdentifier($pks[$i]);
}
$pks = implode(', ', $pks);
}
$sql = 'SELECT ' . $pks . ' FROM ' . $conn->quoteIdentifier($table->getTableName()) . ' WHERE ';
if (is_array($this->field)) {
foreach ($this->field as $k => $v) {
$this->field[$k] = $conn->quoteIdentifier($table->getColumnName($v));
}
$sql .= implode(' = ? AND ', $this->field) . ' = ?';
$values = $value;
} else {
$sql .= $conn->quoteIdentifier($table->getColumnName($this->field)) . ' = ?';
$values = array();
$values[] = $value;
}
// If the record is not new we need to add primary key checks because its ok if the
// unique value already exists in the database IF the record in the database is the same
// as the one that is validated here.
$state = $this->invoker->state();
if ( ! ($state == Doctrine_Record::STATE_TDIRTY || $state == Doctrine_Record::STATE_TCLEAN)) {
foreach ((array) $table->getIdentifierColumnNames() as $pk) {
$sql .= ' AND ' . $conn->quoteIdentifier($pk) . ' != ?';
$pkFieldName = $table->getFieldName($pk);
$values[] = $this->invoker->$pkFieldName;
}
}
if (isset($this->args) && is_array($this->args) && isset($this->args['where'])) {
$sql .= ' AND ' . $this->args['where'];
}
$stmt = $table->getConnection()->getDbh()->prepare($sql);
$stmt->execute($values);
return ( ! is_array($stmt->fetch()));
}
}