<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Security\Acl\Model; /** * Represents the identity of an individual domain object instance. * * @author Johannes M. Schmitt <schmittjoh@gmail.com> */ interface ObjectIdentityInterface { /** * We specifically require this method so we can check for object equality * explicitly, and do not have to rely on referencial equality instead. * * Though in most cases, both checks should result in the same outcome. * * Referential Equality: $object1 === $object2 * Example for Object Equality: $object1->getId() === $object2->getId() * * @param ObjectIdentityInterface $identity * @return Boolean */ public function equals(ObjectIdentityInterface $identity); /** * Obtains a unique identifier for this object. The identifier must not be * re-used for other objects with the same type. * * @return string cannot return null */ public function getIdentifier(); /** * Returns a type for the domain object. Typically, this is the PHP class name. * * @return string cannot return null */ public function getType(); }