Currently the SerialMarshaller/UnMarshaller is not maintaining the correct class subject information for Externalizer instances. This should be serialized out along with the Externalizer instance.

Current Issue:

public final class ExternalizedObject implements Externalizable, Creator {

...

/**

{@inheritDoc}

*/
public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException

{ externalizer = (Externalizer) in.readObject(); final Object o = externalizer.createExternal(getClass(), in, this); /* <--- This getClass doesn't work. This will always be ExternalizedObject and the subject should really be the object to create. The class should be written out and read in before the externalizer. */ externalizer.readExternal(o, in); obj = o; }

...

}