Check out these threads, it's a bug in the RPC serializer, there's a workaround on the second link.
http://groups.google.com/group/google-web-toolkit/browse_thread/thread/cbf566637f03496a http://code.google.com/p/google-web-toolkit/issues/detail?id=4438 On Apr 13, 7:27 am, Jochen Schnaidt <[email protected]> wrote: > Hi, > I posted this already at the AppEngine forum but I think this is an > interface problem so I post here as well. > > I’m building an application with GWT and GAE and have a problem saving > data in the datastore. In my application I generate a list which > consists of lists of strings, looks this way: List<List<String>> > trackList; > > It compiles but gives me a warning: > > [WARN] Warnings in > generated://D271BF8A9063BFFBB6E2618C9E23EF15/eventManagement/shared/HandleEventService_TypeSerializer.java' > [WARN] Line 31: Referencing deprecated class > 'com.google.gwt.user.client.ui.ChangeListenerCollection' > And 3 other deprecated classes > > When I run the application and call the method for saving data I get > the following error: > > javax.jdo.JDOException: Error creating the MetaDataManager for API > "JDO" : > NestedThrowables: > java.lang.reflect.InvocationTargetException > > I think the problem is that the compiler uses old GWT classes for > serialization and not the classes of the GAE. Right? > > Any idea how I could fix this problem? > > Thanks a lot. Greetings -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
