4 * This file is part of the Symfony package.
6 * (c) Fabien Potencier <fabien@symfony.com>
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
12 namespace Symfony\Component\Validator\Constraints;
14 use Symfony\Component\Validator\Constraint;
18 * @Target({"PROPERTY", "METHOD", "ANNOTATION"})
20 * @author Bernhard Schussek <bschussek@gmail.com>
22 class IsNull extends Constraint
24 const NOT_NULL_ERROR = '60d2f30b-8cfa-4372-b155-9656634de120';
26 protected static $errorNames = array(
27 self::NOT_NULL_ERROR => 'NOT_NULL_ERROR',
30 public $message = 'This value should be null.';