i created a Doctrine_Query and executes it but i wanna know what params i can pass to it.

$q = Doctrine_Query::create()
    ->select('cl.id, cl.name')
    ->from('ContactList cl');

$contactLists = $q->execute($params, $hydrationMode);

from the api documentation:

execute($params = array(), $hydrationMode = null)

where do they tell me about the params? and also hydration mode.

seems like i cannot find anything in the documentations. would be great if they had a reference for everything.

thanks