LoaderChain.php in Plug 7

Namespace

Symfony\Component\Validator\Mapping\Loader

File

lib/Symfony/validator/Symfony/Component/Validator/Mapping/Loader/LoaderChain.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <[e-mail]>
 *
 * 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;

/**
 * Loads validation metadata from multiple {@link LoaderInterface} instances.
 *
 * Pass the loaders when constructing the chain. Once
 * {@link loadClassMetadata()} is called, that method will be called on all
 * loaders in the chain.
 *
 * @author Bernhard Schussek <[e-mail]>
 */
class LoaderChain implements LoaderInterface {

  /**
   * @var LoaderInterface[]
   */
  protected $loaders;

  /**
   * @param LoaderInterface[] $loaders The metadata loaders to use
   *
   * @throws MappingException If any of the loaders has an invalid type
   */
  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;
  }

}

Classes

Name	Description
LoaderChain	Loads validation metadata from multiple {@link LoaderInterface} instances.