Does OJB have any support for a the NullObject pattern?  I have a member 
variable that is a Interface.  One implementation of that interface is 
an implementation that represents an uninitialized variable, but can 
still be used safely without every client checking it for null.  But, 
when I would like the oid referring to it stored in the database as 
null, AND to have the correct Null implementation used to initialize it 
when populating an object with null.

Thanks
David


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