I have a clustered stateful session bean... I have a field in this bean bean which is of a non-serialzable type (say, NonSer)... I also have another class (a DTO / VO) which is a serialzable representation of NonSer (say NonSerDTO)... When the bean passivates, I have the opportunity to convert the NonSer field to its NonSerDTO and rehydrate the same in ejbActivate... However, in case of state replication across cluster nodes, I am not aware of any callback methods which give me the opportunity to do that...

I'll appreciate your thoughts on how I could achieve state replication in this case.

Below is the gist of the code to clarify my problem:

@Stateful
@Clustered
public class MySFSB implements MyInterface {

 transient NonSer nonSer; //non-serializable field

 NonSerDTO ser; //serializable representation of nonSer
 //The ser field is null except between passivate and activate
 ...
 public void ejbPassivate {
 ser = converttoDTO(nonSer);
 nonSer = null;
 }

 public void ejbActivate {
 nonSer = convertFromDTO(ser);
 ser = null;
 }
 ...
}