Thank for the reply.  I'm only marshalling/unmarshalling on the server-side 
- so does that mean I should move those classes into a "server" package? 
 That's even if the annotation is in the shared bean?  Yes, still using 
GWT-RPC. Is the workaround as simple as this?

My.gwt.xml (before)
<module>
        <source path="common"/></module> <module> <source path="common">
<exclude name="MyXmlAdapter1.java" />
<exclude name="MyXmlAdapter1.java" />
</source>

On Wednesday, June 20, 2012 6:16:03 PM UTC-4, Andrea Boscolo wrote:
>
> Such annotations are not GWT compatible (i.e., they are not known to the 
> GWT emulated JRE and definitely cannot be compiled in js, even providing 
> the relative sources - that I think they can be found in jaxb-api-src.jar 
> inside the jaxb distribution).
> To allow jaxb annotations (and annotations only) to be used in 
> client/shared side, you have to tell the gwt compiler to compile those 
> classes ignoring such annotations while still allow the server side to use 
> them.
> See http://code.google.com/p/google-web-toolkit/issues/detail?id=4020#c8for 
> the workaround.
>
> If you are using an XmlAdapter (the class) in client code, move it to 
> server side (i.e., keep your marshalling/unmmarshalling logic in the 
> server).
>
> I assumed you are using GWT-RPC of course. With RequestFactory you should 
> have no problem at all.
>
> On Wednesday, June 20, 2012 11:33:54 PM UTC+2, shawnjohnson wrote:
>>
>> I am having this issue as well.  The annotations are in models in our 
>> 'shared' package - shared between client and server.  Anyone know what I 
>> should change to resolve this?
>>
>> On Thursday, December 30, 2010 1:38:27 PM UTC-5, Andrea Boscolo wrote:
>>>
>>> I suppose you are trying to use that annotation on a client side 
>>> class; javax is not emulated by gwt compiler, so you couldn't use it 
>>> client side. 
>>>
>>> Why not moving the adapter to the server side? Does your client really 
>>> need it? 
>>> Annotated jaxb classes can be used by the client (with a couple of 
>>> tweaks and not for all annotations), but marshalling/unmarshalling to/ 
>>> from xml, still need to be handled server side. In this point of view, 
>>> the adapter can be known only to your server. 
>>>
>>> I can tell you the tweak, but first try to move it server side. 
>>>
>>

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