class LoaderChain in Zircon Profile 8

Calls multiple {@link LoaderInterface} instances in a chain.

This class accepts multiple instances of LoaderInterface to be passed to the constructor. When {@link loadClassMetadata()} is called, the same method is called in <em>all</em> of these loaders, regardless of whether any of them was successful or not.

@author Bernhard Schussek <[e-mail]> @author Kévin Dunglas <[e-mail]>

Hierarchy

• class \Symfony\Component\Serializer\Mapping\Loader\LoaderChain implements LoaderInterface

1 file declares its use of LoaderChain

ClassMetadataFactoryTest.php in vendor/symfony/serializer/Tests/Mapping/Factory/ClassMetadataFactoryTest.php

File

vendor/symfony/serializer/Mapping/Loader/LoaderChain.php, line 28

Namespace

Symfony\Component\Serializer\Mapping\Loader

class LoaderChain implements LoaderInterface {

  /**
   * @var LoaderInterface[]
   */
  private $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(ClassMetadataInterface $metadata) {
    $success = false;
    foreach ($this->loaders as $loader) {
      $success = $loader
        ->loadClassMetadata($metadata) || $success;
    }
    return $success;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
LoaderChain::$loaders	private	property
LoaderChain::loadClassMetadata	public	function	Load class metadata. Overrides LoaderInterface::loadClassMetadata
LoaderChain::__construct	public	function	Accepts a list of LoaderInterface instances.