Multiple entity level join fetch

[norad2]

Say I have three entities, Owner, Cat, Kitten

@Entity
public class Owner {
 private Integer ownerId;
 private Set<Cat> cats = new HashSet<Cat>(0);
 .
 .
 .
}

@Entity
public class Cat {
 private Integer catId;
 private Set<Kitten> kittens = new HashSet<Kitten>(0);
 .
 .
 .
}

@Entity
public class Kitten {
 private Integer kittenId;
 .
 .
 .
}

I want to be able to run one query that will join fetch all owners, cats and kittens

If I wanted to get all cats for all owners I could simply make the query

select o from Owner o join fetch o.cats

I was trying to get the kittens at the same time with a query like this:

select o from Owner o join fetch o.cats join fetch o.cats.kittens

but that doesn't work.

What would be the proper syntax to go multiple levels deep in a join fetch?

Thanks

[mars1412]

should be smth. like this (I didn't try it):

select o from Owner o
join fetch o.cats c
join fetch c.kittens