Implementing Single Table Aggregation in OJB

[Lynn Monson]

Could anyone tell me how to implement the Single Table Aggregation pattern for a 1:1 
relation using OJB?  RowReaders seem to solve the problem for reading, but I'm stumped 
as to how to write to such a table.
 
The pattern is found here:
http://www.objectarchitects.de/ObjectArchitects/orpatterns/MappingObjects2Tables/SingleTableAggregation/
 
Any help is *greatly* appreciated.