Acl/Domain/ObjectIdentityRetrievalStrategy.php


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<?php

namespace Symfony\Component\Security\Acl\Domain;

use Symfony\Component\Security\Acl\Exception\InvalidDomainObjectException;
use Symfony\Component\Security\Acl\Model\ObjectIdentityRetrievalStrategyInterface;

/*
 * This file is part of the Symfony framework.
 *
 * (c) Fabien Potencier <fabien.potencier@symfony-project.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

/**
 * Strategy to be used for retrieving object identities from domain objects
 *
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
class ObjectIdentityRetrievalStrategy implements ObjectIdentityRetrievalStrategyInterface
{
    /**
     * {@inheritDoc}
     */
    public function getObjectIdentity($domainObject)
    {
        try {
            return ObjectIdentity::fromDomainObject($domainObject);
        } catch (InvalidDomainObjectException $failed) {
            return null;
        }
    }
}