Repository Method to get MAX + 1 of a number field within the entity

NameRepository.php

namespace Application\Repository;

use Application\Entity\Name;
use Doctrine\ORM\EntityRepository;

class NameRepository
    extends EntityRepository
{
    /**
     * @return int
     */
    public function getNextNumber()
    {
        return $this->getEntityManager()->createQuery('SELECT MAX(n.number) + 1 AS number FROM Application\Entity\Name n')->getSingleScalarResult();
    }
}