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\Mapping\Loader;
Chris@0: 
Chris@0: use Symfony\Component\Validator\Exception\MappingException;
Chris@0: use Symfony\Component\Validator\Mapping\ClassMetadata;
Chris@0: 
Chris@0: /**
Chris@0:  * Loads validation metadata from multiple {@link LoaderInterface} instances.
Chris@0:  *
Chris@0:  * Pass the loaders when constructing the chain. Once
Chris@0:  * {@link loadClassMetadata()} is called, that method will be called on all
Chris@0:  * loaders in the chain.
Chris@0:  *
Chris@0:  * @author Bernhard Schussek <bschussek@gmail.com>
Chris@0:  */
Chris@0: class LoaderChain implements LoaderInterface
Chris@0: {
Chris@0:     protected $loaders;
Chris@0: 
Chris@0:     /**
Chris@0:      * @param LoaderInterface[] $loaders The metadata loaders to use
Chris@0:      *
Chris@0:      * @throws MappingException If any of the loaders has an invalid type
Chris@0:      */
Chris@0:     public function __construct(array $loaders)
Chris@0:     {
Chris@0:         foreach ($loaders as $loader) {
Chris@0:             if (!$loader instanceof LoaderInterface) {
Chris@17:                 throw new MappingException(sprintf('Class %s is expected to implement LoaderInterface', \get_class($loader)));
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         $this->loaders = $loaders;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function loadClassMetadata(ClassMetadata $metadata)
Chris@0:     {
Chris@0:         $success = false;
Chris@0: 
Chris@0:         foreach ($this->loaders as $loader) {
Chris@0:             $success = $loader->loadClassMetadata($metadata) || $success;
Chris@0:         }
Chris@0: 
Chris@0:         return $success;
Chris@0:     }
Chris@14: 
Chris@14:     /**
Chris@14:      * @return LoaderInterface[]
Chris@14:      */
Chris@14:     public function getLoaders()
Chris@14:     {
Chris@14:         return $this->loaders;
Chris@14:     }
Chris@0: }