Are the List fields on your objects specified in terms of interfaces? GWT RPC needs to know as much about your objects at compile time, could you try using a concrete class instead - preferably ArrayList?
It sounds like you're trying to serialize ORM objects directly, is that right? I don't know much about Data Nucleus and whether or not it dynamically enhances entity objects under its control with proxies etc. My experience is with Hibernate which usually does add something to a class, so serializing entities directly is strongly discouraged - either the entity objects have to be filtered of the Hibernate "extras", or values copied into DTOs. On Sep 2, 10:35 am, "jvoro...@googlemail.com" <jvoro...@googlemail.com> wrote: > Hallo, > i have the same problem. > List (GWT) can not be used in DataNuceleus. > > Can every one help pleas! > THX > > On 5 Aug., 04:52, mike <m...@introspect.com> wrote: > > > > > I have a simple one-to-many betwen two entities. The parent entity > > uses List to contain the child entities. I am able to persist these > > entities in the datastore without problems. > > > However, when reading a root entity at the server, I get: > > > rpc.SerializationException: Type 'org.datanucleus.sco.backed.List' was > > not included in the set of types which can be serialized... > > > The entities are successfully read from the datastore, but something > > in Datanucleus doesn't build the List correctly. > > > Has anyone found a workaround for this serialization problem. > > > Thanks > > > GWT 1.7 GAE 1.2.2 --~--~---------~--~----~------------~-------~--~----~ 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 For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
