JPA Composite Key + Sequence

Question

Is it possible in plain JPA or JPA+Hibernate extensions to declare a composite key, where an element of the composite key is a sequence?

This is my composite class:

Answer 1

I notice that it appears your building a composite primary key like this example. While I was poking at a similar problem in my own database I wondered if maybe you could call the sql directly like:

select nextval ('hibernate_sequence')

I suppose that would be cheating though ;-)