doctrine filter so ***** simple test with sf2.1

gistfile1.php

<?php

namespace Acme\Bundle\Doctrine\Filter;

use Doctrine\ORM\Mapping\ClassMetaData,
    Doctrine\ORM\Query\Filter\SQLFilter,
    Doctrine\ORM\EntityManager,
    Doctrine\DBAL\Types\Type as DBALType;

/**
 * Description of TestFilter
 *
 * @author danielwaligora
 */
class TestFilter extends SQLFilter
{
    public function addFilterConstraint(ClassMetadata $targetEntity, $targetTableAlias)
    {
        if($targetEntity->name === 'Acme\Bundle\Entity\Clip') {
            return $targetTableAlias.'.duration > 1';
        }
        
        return ''; //this is MANDATORY!
    }
}

?>

gistfile2.yml

    orm:
        auto_generate_proxy_classes: %kernel.debug%
        default_entity_manager: default
        entity_managers:
            default:
                auto_mapping: true
                filters:
                    test:
                        class: Acme\Bundle\Doctrine\Filter\TestFilter
                        enabled: true