public function findAllPublishedIndexableOrdered()
    {
        $builder = $this->createQueryBuilder('a')->orderBy('a.startedAt', 'DESC');
        $builder->where(
            $builder->expr()->andX(
                $builder->expr()->isNotNull('a.startedAt'),
                $builder->expr()->lte('a.startedAt', ':now'),
                $builder->expr()->orX(
                    $builder->expr()->isNull('a.endedAt'),
                    $builder->expr()->gte('a.endedAt', ':now')
                )
            )
        )->innerJoin('a.metas', 'm', Join::WITH, 'm.contents = :value');

        return $builder->setParameters(array(
                'now'   => new \DateTime(),
                'value' => 'index,follow',
            )
        )->getQuery()->getResult();
    }