I refer to your method "generateItems(Key containerKey)" where you do
Item item = new Item(); item.setContainer(container); item.setValue(Integer.toString(i)); em.persist(item); Where did you put the item in the List exactly? You set the owner of the item as this container, great, but it's not in the List. Any List has ordering and the above will at best have it in the List "somewhere", and at worst just not be present in the List ... since you didn't add it. i.e container.getItems().add(item) -- 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-j...@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.