I must admit that I've not personally researched it. I think that it has
been discussed on the appengine user group however. You may also want to
search this group.
The problem, as I understand it, is that enhancement adds fields to the
runtime type. But, GWT-RPC works off of the static (pre-enhancement) view
of the type which is why you get the errors. I'm not sure what the best
work around is. I do know Ray Cromwell has done some looking into it.
On Tue, May 12, 2009 at 1:34 PM, Pavel Byles <pavelby...@gmail.com> wrote:
> Miguel,
> YES!
> that's it. As soon as I comment out the @PersistenceCapable it works!
>
> Now I know there are issues w/ GWT and enhanced classes, but exactly how am
> I supposed to persist data w/o having that annotation?
>
> 2009/5/12 Miguel Méndez <mmen...@google.com>
>
>> What if you try to have it not be persistable (comment out the persistence
>> annotations, rebuild, and return a dummy one that was not instantiated by
>> the ORM code)? I wonder if this is the ORM and GWT-RPC incompatibility.
>>
>>
>> On Tue, May 12, 2009 at 1:00 PM, Pavel Byles <pavelby...@gmail.com>wrote:
>>
>>> I suspect it has something to do with the object I am returning.
>>>
>>> When I use the same service to return a String or a simple class that
>>> contains a String everything works fine.
>>>
>>> But when I try to return instances of Country then I get the error.
>>>
>>> Any ideas why this happens?
>>> Here is the Country class:
>>>
>>> import java.io.Serializable;
>>>
>>> import javax.jdo.annotations.IdentityType;
>>> import javax.jdo.annotations.PersistenceCapable;
>>> import javax.jdo.annotations.Persistent;
>>> import javax.jdo.annotations.PrimaryKey;
>>>
>>> @PersistenceCapable(identityType = IdentityType.APPLICATION, detachable =
>>> "true")
>>> public class Country implements Serializable {
>>> private static final long serialVersionUID = -1L;
>>>
>>> @PrimaryKey
>>> @Persistent
>>> private String name;
>>>
>>> @Persistent
>>> private float latitude;
>>>
>>> @Persistent
>>> private float longitude;
>>>
>>> public Country () {
>>>
>>> }
>>>
>>> public Country (String name, float latitude, float longitude) {
>>> this.name = name;
>>> this.latitude = latitude;
>>> this.longitude = longitude;
>>> }
>>>
>>> public String getName() {
>>> return name;
>>> }
>>>
>>> public void setName(String name) {
>>> this.name = name;
>>> }
>>>
>>> public float getLatitude() {
>>> return latitude;
>>> }
>>>
>>> public float getLongitude() {
>>> return longitude;
>>> }
>>>
>>> public void setLatitude(float latitude) {
>>> this.latitude = latitude;
>>> }
>>>
>>> public void setLongtiude(float longitude) {
>>> this.longitude = longitude;
>>> }
>>> }
>>>
>>>
>>>
>>>
>>>
>>
>>
>> --
>> Miguel
>>
>>
>>
>>
>
>
> --
> -Pav
>
>
> >
>
--
Miguel
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