ValueProxy can help with @Embedded, please take a look at Thomas' post
here:

http://groups.google.com/group/google-web-toolkit/browse_thread/thread/743631b8460d931b/4242f0ef5de751e7?lnk=gst&q=ValueProxy#4242f0ef5de751e7


On Jan 4, 3:43 pm, Aldo Neto <tumo...@gmail.com> wrote:
> Hi,
>
> I've been struggling with RequestFactory lately and I just found that it
> doesn't support what I need, i.e. Embedded objects.
>
> "Note that RequestFactory does not currently support embedded objects
> (@Embedded in various ORM frameworks) because it expects every entity to
> exist independently with its own ID" 
> (fromhttp://code.google.com/intl/pt-BR/webtoolkit/doc/latest/DevGuideReque...
> ).
>
> I'd like to know how I can achieve the same result as using @Embedded /
> @EmbeddedId. Any clue?
>
> One last information: What I need is to map a N:M relationship and add some
> extra data to it, so I followed these 
> instructions:http://sieze.wordpress.com/2009/09/04/mapping-a-many-to-many-join-tab...
>
> Thanks,
> Aldo

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