@PersistenceCapable
public class MyEntity extends EntityBase
{
@PrimaryKey
@Persistent
private String mPrimaryKey;
}
com.google.web.bindery.requestfactory.server.UnexpectedException: The domain
type javax.jdo.identity.StringIdentity cannot be sent to the client
Is there a known workaround for this?
The problem is that JDO stores the identifier as a StringIdentity rather
than a String and when it comes time to transmit the object to the client
via GWT RequestFactory it's the JDO version of the object that is being
transmitted (so it appears) rather than the MyEntity that I defined.
This only occurs when I fetch the object from the datastore. If I
instantiate it on the server (new MyEntity() ...) it can be sent to the
client and if I instantiate it on the client it can be sent to the server.
When I look at the results in a debugger immediately after:
List<MyEntity> lMyEntities = (List<MyEntity>) lQuery.execute();
I get the following for:
StreamingQueryResult.lazyResult.entityTransformer.val$acmd.managedMembers
[<field name="mKey"
persistence-modifier="persistent"
primary-key="true"
null-value="none"
default-fetch-group="true"
embedded="false"
unique="false">
<column name="mKey"/>
</field>]
Which is all fine but when I look at:
StreamingQueryResult.lazyResult.entityTransformer.val$acmd.objectidClass
javax.jdo.identity.StringIdentity
Apparently when I return from the the server request and the collection of
objects is marshaled back to the client, that objectidClass gets marshaled
along with it and the exception is thrown.
So my question appears to be, how can I get my objects back out (rather than
the ones with the StringIdentity members in them)?
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