Symfony2 Doctrine2 query with array parameter
===

I need to make query like this:

    SELECT p.pid, p.url FROM products as p WHERE url_crc IN (FNV_64("http://url1.com/"),FNV_64("http://url2.com/"))

I need to use FNV_64 hash function for every array variable. **I CAN'T make hashes before passing variables to query builder. This hash functions is only avaliable as MySQL extension.**

How can i make this using Symfony2 ? 
For example, using:

    $qb = $em->createQueryBuilder();
    $query = $qb->select('p.pid')
                ->from('SRC\MainBundle\Entity\Product', 'p')
                ->where('p.url_crc IN (FNV_64(:urls))') // error HERE
                ->setParameter('urls', $hashes_array)
                ->getQuery();

Wouldn't work. The only way i can this of is:

    $query = $em->createNativeQuery('SELECT p.pid, p.url FROM products as p
                                    WHERE url_crc IN (' . join(',', $tmp_array) . ')', $rsm);

Where tmp_array looks like this:

    Array
    (
        [0] => FNV_64("http://url1.com/")
        [1] => FNV_64("http://url2.com/")
    )

Is there better way ?
