You have to touch child field while the parent is still managed by PersistenceManager, before detaching (pm.close).
Something like: PersistenceManager pm = PMF.get().getPersistenceManager(); try { Employee e = pm.getObjectById(Employee.class, id); ContactInfo i = e.getContactInfo(); return e; } finally { pm.close(); } --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~----------~----~----~----~------~----~------~--~---