/**
* @param EntityManager $em
*/
public function __construct(EntityManager $em)
{
$this->em = $em;
$this->db = $em->getConnection();
$this->platform = $this->db->getDatabasePlatform();
$this->quotes = $em->getConfiguration()->getQuoteStrategy();
$this->uow = $this->em->getUnitOfWork();
}