$query = $this->getEntityManager()->createQuery("SELECT item
                                                         FROM LC\ShopBundle\Entity\Item item
                                                         WHERE item.id = :id
                                                         AND item.slug = :slug
                                                         AND item.isConfirmed = 1
                                                         AND item.isValid = 1
                                                         AND item.isDeleted = 0");
        $query->setParameter('id', $id);
        $query->setParameter('slug', $slug);
        $query->useQueryCache(true);
        $query->useResultCache(true);
        return $query;