Re: Serialization Problem

Hi Ahmed,
does your Member class contain associations to other classes? If yes,
I guess to have to repackage the lists as well... (i.e. create a new
Hashtable and so on). Another question could be if you can have
annotated classes on the client or you have to copy those classes as
well, i.e. have a plain pojo and an annotated pojo... - you could just
try with a few samples...
Hope this helps
Sebastian

On Jun 14, 8:45 pm, Ahmed Shoeib <ahmedelsayed.sho...@gmail.com>
wrote:
> Exception while dispatching incoming RPC call
> com.google.gwt.user.client.rpc.SerializationException: Type
> 'org.datanucleus.store.appengine.query.StreamingQueryResult' was not
> included in the set of types which can be serialized by this
> SerializationPolicy or its Class object could not be loaded. For
> security purposes, this type will not be serialized.: instance = []
>
> Members Class ------------- on client
> ---------
> package com.Users.client;
> @PersistenceCapable
> public class Members implements Serializable{
> .
> .
> .
>
> }
>
> ----------------
> Entry Point ----------- Client Class
>
> the problem here
>
>  // Get Persisted Member
>                    memberService.getMembers(new AsyncCallback<List<Members>>() {
>
>                         @Override
>                         public void onFailure(Throwable caught) {
>                                 // TODO Auto-generated method stub
>
>                         }
>
>                         @Override
>                         public void onSuccess(List<Members> result) {
>                                 // TODO Auto-generated method stub
>                                 adminPanel.add(new Label("get Members "));
>                                 adminPanel.add(new Label("size " +result.size()));
>                                 for (Members m : result) {
>                                         adminPanel.add(new Label(m.getMember()));
>                                 }
>                         }
>                 });
>
> --------------------
>
> MembersServiceImpl  ------------ on Server
> --------
>
> package com.Users.server;
> @SuppressWarnings("serial")
> public class MembersServiceImpl extends RemoteServiceServlet
> implements
> MembersService {
>
> @SuppressWarnings("unchecked")
>         @Override
>         public List<Members> getMembers() throws NotLoggedInException {
>                 // TODO Auto-generated method stub
>
>                 List<Members>  returnList = new ArrayList<Members>();
>
>                 PersistenceManager pm = PMF.get().getPersistenceManager();
>             String query = "select from " + Members.class.getName();
>             List<Members> members = (List<Members>)
> pm.newQuery(query).execute();
>
>                  for(Members step: members)
>                  {
>                      returnList.add(step);
>                  }
>             return returnList;
>
>         }
>
> }
>
> how to Solve this problem

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