--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Validator\Constraints;
+
+use Symfony\Component\Validator\Constraint;
+
+/**
+ * @Annotation
+ * @Target({"CLASS", "PROPERTY", "METHOD", "ANNOTATION"})
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class Expression extends Constraint
+{
+ const EXPRESSION_FAILED_ERROR = '6b3befbc-2f01-4ddf-be21-b57898905284';
+
+ protected static $errorNames = array(
+ self::EXPRESSION_FAILED_ERROR => 'EXPRESSION_FAILED_ERROR',
+ );
+
+ public $message = 'This value is not valid.';
+ public $expression;
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getDefaultOption()
+ {
+ return 'expression';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getRequiredOptions()
+ {
+ return array('expression');
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getTargets()
+ {
+ return array(self::CLASS_CONSTRAINT, self::PROPERTY_CONSTRAINT);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function validatedBy()
+ {
+ return 'validator.expression';
+ }
+}