[news.eclipse.rt.eclipselink] ManyToOne only have the IDs in a collectio

[Philipp Kursawe <phil.kursawe@xxxxxxxxx>]

Hello!

I wonder if its possible to fetch only the IDs of the associated 
collection objects instead of the full blown entity. Lets say I have a 
User object hat can have 0..n orders assigned to him. But I only want to 
have the order IDs in the collection in the User entity.
Collection<String> orders;
instead of
Collection<UserOrder> orders;

Any ideas?

Thanks
Phil