Collecitons in Associated Objects should never be null per EJB 3.0 Specification 2.1.7 Entity Relationships ----------------------------------------------------------------------------------------------------------- Key: EJB-399 URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-399 Project: Hibernate Entity Manager Issue Type: Bug Components: EntityManager Affects Versions: 3.3.1.GA Environment: Windows XP, JRE 1.6.0_07 Reporter: Jon Kofal "EJB 3.0 Specification 2.1.7 Entity Relationships" says (last paragraph): "If there are no associated entities for a multi-valued relationship of an entity fetched from the database, the persistence provider is responsible for returning an empty collection as the value of the relationship." This code below throws a NullPointerException, because the Collection returned from "p.getReports()" is null. I'd expect that p.getReports() wold return an empty Collection per the EJB 3.0 Specification. public void testProjectReport() throws Exception { EntityManager em = null; try { em = emf.createEntityManager(); em.getTransaction().begin(); Projekt p = new Projekt(); p.setName(PROJEKT[0]); em.persist(p); p = (Projekt) em.createQuery("from Projekt").getSingleResult(); for (Iterator<Report> i = p.getReports().iterator(); i.hasNext();) { logger.info(i.next().toString()); } em.getTransaction().commit(); } catch (Exception e) { logger.log(Level.SEVERE, e.getMessage(), e); throw e; } finally { if (em != null) { em.close(); } } } -- 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