/**
* Constructor.
*
* @param EntityManager $manager
* @param Metadata $metadata
* @param array $mapping
*/
public function __construct(EntityManager $manager, Metadata $metadata, array $mapping)
{
$this->manager = $manager;
$this->metadata = $metadata;
if (!($this->name = $mapping['name'])) {
throw new \InvalidArgumentException('The parameter "name" may not be omitted in relations.');
}
$this->targetEntity = $mapping['targetEntity'];
$this->targetRepository = $manager->getRepository($this->targetEntity);
$this->targetMetadata = $this->targetRepository->getMetadata();
}