I have a class that need to be serialized (for both persistentcy and client-server communication)

for simplicity's sake let's call the classes Business a BusinessData and I prefix for their Interfaces.

All the getter and setter are delegated from Business class to BusinessData class.

I thought about implementing IBusinessData interface that will contain all the getter and setters and IBusiness interface that will extend it.

I can either make Business extend BuisnessData so I will not need to implement all getter and setter delegates, or make some abstract class ForwardingBusinessData that will only delegate getter and setters.

Any of the above option I lose my hierarchy freedom, do any of you have any creative solutions for this problem...

I also reviewed DAO pattern: http://java.sun.com/blueprints/patterns/DAO.html