Hibernate version 2.1.7

I have two objects, and Application and a Queue

An Application can be on a Queue (i.e. an Application object has an instance of Queue on it), or not (the Queue is null on it).

I have a mapping files that link Queue to Application and vice versa

I want to do a hibernate query that counts how many Applications there are that are not on a Queue.

In SQL this is done by an EXCEPTION JOIN, e.g.

select count(*) from applicat ap exception join queue q on ap.appid = q.appid

How do I do this in Hibernate ?

(I'd post the mapping files but they are pretty big and it's more of a general question than one specific to my application), the relvant portiion of the Application one is here:

<one-to-one name="queueEntry" class="net.targetgroup.broker.queue.QueueEntry" outer-join="auto" cascade="all" />