JPA 2 Criteria Query with Object as Parameter not Working --------------------------------------------------------- Key: HHH-5051 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5051 Project: Hibernate Core Issue Type: Bug Components: entity-manager Affects Versions: 3.5.0-CR-2 Reporter: Guido Müller Priority: Blocker The problem is with this scenario: 2 Entity classes A and B We have a 1:N relation between A (N) and B (1) This test fails: I get one instance of B with the entity manager find method. I query the database with JPA 2 query to get a list of all instances of A that have the many-to-one property equals the instance got from the 1st step. Code: EntityManager em = ... B b = em.find(B.class, 1L); CriteriaBuilder cb = em.getCriteriaBuilder(); CriteriaQuery<A> q = cb.createQuery(A.class); Root<A> p = q.from(A.class); q.select(p).where(cb.equal(p.get(A_.b), b)); List<A> l = em.createQuery(q).getResultList(); em.close(); This does not work but it should. It works properly with EclipseLink. In Hibernate I get this to work when I provide b.getId() as Parameter. But this is not correct! -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira