1 <?php

     2 

     3 /*

     4  * This file is part of the Symfony package.

     5  *

     6  * (c) Fabien Potencier <fabien@symfony.com>

     7  *

     8  * For the full copyright and license information, please view the LICENSE

     9  * file that was distributed with this source code.

    10  */

    11 

    12 namespace Symfony\Component\Security\Acl\Domain;

    13 

    14 use Symfony\Component\Security\Acl\Exception\InvalidDomainObjectException;

    15 use Symfony\Component\Security\Acl\Model\ObjectIdentityRetrievalStrategyInterface;

    16 

    17 /**

    18  * Strategy to be used for retrieving object identities from domain objects

    19  *

    20  * @author Johannes M. Schmitt <schmittjoh@gmail.com>

    21  */

    22 class ObjectIdentityRetrievalStrategy implements ObjectIdentityRetrievalStrategyInterface

    23 {

    24     /**

    25      * {@inheritDoc}

    26      */

    27     public function getObjectIdentity($domainObject)

    28     {

    29         try {

    30             return ObjectIdentity::fromDomainObject($domainObject);

    31         } catch (InvalidDomainObjectException $failed) {

    32             return null;

    33         }

    34     }

    35 }