Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\Validator;
Chris@0: 
Chris@0: use Symfony\Component\Validator\Constraints\ExpressionValidator;
Chris@0: 
Chris@0: /**
Chris@0:  * Default implementation of the ConstraintValidatorFactoryInterface.
Chris@0:  *
Chris@0:  * This enforces the convention that the validatedBy() method on any
Chris@0:  * Constraint will return the class name of the ConstraintValidator that
Chris@0:  * should validate the Constraint.
Chris@0:  *
Chris@0:  * @author Bernhard Schussek <bschussek@gmail.com>
Chris@0:  */
Chris@0: class ConstraintValidatorFactory implements ConstraintValidatorFactoryInterface
Chris@0: {
Chris@17:     protected $validators = [];
Chris@0: 
Chris@0:     public function __construct()
Chris@0:     {
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function getInstance(Constraint $constraint)
Chris@0:     {
Chris@0:         $className = $constraint->validatedBy();
Chris@0: 
Chris@0:         if (!isset($this->validators[$className])) {
Chris@0:             $this->validators[$className] = 'validator.expression' === $className
Chris@0:                 ? new ExpressionValidator()
Chris@0:                 : new $className();
Chris@0:         }
Chris@0: 
Chris@0:         return $this->validators[$className];
Chris@0:     }
Chris@0: }