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Hibernate version: 3

Name and version of the database you are using: DB2

How can I produce typed one-to-one associations without using a composite key?

I've looked at this example:

http://www.hibernate.org/hib_docs/v3/re ... ed-onetone

However, for argument sake imagine my Address table does not have a composite-id but has a generated surrogate key. It also has a type column which is what I want to "type" it by. Can I achieve this mapping without having to turn the table's id into a composite?