* * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Validator\Mapping\Loader; use Symfony\Component\Validator\Exception\MappingException; use Symfony\Component\Validator\Mapping\ClassMetadata; /** * Calls multiple LoaderInterface instances in a chain * * This class accepts multiple instances of LoaderInterface to be passed to the * constructor. When loadClassMetadata() is called, the same method is called * in all of these loaders, regardless of whether any of them was * successful or not. * * @author Bernhard Schussek */ class LoaderChain implements LoaderInterface { protected $loaders; /** * Accepts a list of LoaderInterface instances * * @param LoaderInterface[] $loaders An array of LoaderInterface instances * * @throws MappingException If any of the loaders does not implement LoaderInterface */ public function __construct(array $loaders) { foreach ($loaders as $loader) { if (!$loader instanceof LoaderInterface) { throw new MappingException(sprintf('Class %s is expected to implement LoaderInterface', get_class($loader))); } } $this->loaders = $loaders; } /** * {@inheritDoc} */ public function loadClassMetadata(ClassMetadata $metadata) { $success = false; foreach ($this->loaders as $loader) { $success = $loader->loadClassMetadata($metadata) || $success; } return $success; } }