I believe this may be similar to: http://code.google.com/p/google-web-toolkit/issues/detail?id=7827 but I can't be certain as I'm using slightly different components.
I have a WineProxy EntityProxy with a list of VarietalComponentProxy EntityProxies. The id of the VCP is a VarietalComponentIdProxy (which proxies a JPA @EmbeddedId instance), but that id's ValueProxy has no setters or getters (I set and get to the VCP itself client-side, and on the server-side set up the VCId accordingly). When creating a new VCP foro the currently edited WineProxy, I call a service to query for a list VarietalProxy objects, select one and hold it, then before persisting the WineProxy, I 'set' the held VarietalProxy into a newly created VCP which I then add to the WineProxy's VCP list editor before calling a InstanceRequest.persist().using(WineProxy). Several problems arise when I go to edit a WineProxy. 1. First, if I have multiple VCs, the RF find() returns the same VC for the # of items it's supposed to be returning. This is odd. 2. Second, if I save as-is, the VCP list is fine. But if I add or remove a VCP to/from the list, any existing VCPs get sent to the server as nulls, and if I filter them out to avoid NPEs, they're simply removed from that Wine relation. I don't have a problem calling query services to give me EntityProxy objects to add to another object's ListEditor for any non-composite id based lists. This one is the only one that's giving me a bunch of issues, so in light of the issue I linked to above, I think I may be doing something fundamentally wrong. I'm using Guice with Guice-Persist, GP's PersistFilter on every http request to enable Open-Session-In-View for the app, and JPA + Hibernate for data access. I don't know if this is relevant, but since I'm querying for VarietalProxy's via a "service" Request and I'm editing and persisting my proxies via InstanceRequest "services" - each of which are backed by different servlets: All of my InstanceRequest "services" are defined in one RequestFactory, backed by a subclass of RequestFactoryServlet (at "/instanceRequest") that uses a ServiceLayerDecorator that I've overridden invoke() with Guice-Persist's @Transactional so that all of my InstanceRequests are within a txn. All of my Request "services" are defined in another RequestFactory backed by a separate RequestFactoryServlet (at "/gwtRequest") that uses my own ServiceLocator to find the Guice bound services, which may or may not have their service methods demarcated with @Transactional. -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
