I've looked through the "EJB3 and Hibernate3 mapping metadata with JDK 5.0 Annotations" document that came with the annotations package (version 3.0 alpha1, 06. January 2005).

I am converting an existing 2.x object model over to the 3.0 + Annotations but I don't see any way to define UUID generators.

Can someone point me in the right direction or supply a workaround? Or, will UUID generators not be supported in EJB3 and that's why it's missing?

The EJB3 spec does not support UUID geenrators, but hibernate-annotations will as a specific annotation.

PS put that to JIRA in the HibernateExt/annotations projet as a feature request.