Hi all.
I'm trying to tranfer an association between 2 interfaces on my object
model to my database
I can use extents and polymorphism successfully and I know how to map
M:N associations, but I dunno how to proceed in this case.
I have 2 main abstractions ( InformationUnit & Qualifier ) .
----------------- ---------------
|<< interface >>| |<<interface>>|
|InformationUnit|-------| Qualifier |<-------|
----------------- --------------- |
^ |
| |
--------------------- ------------
| <<abstract>> | | |
|BaseInformationUnit| -------- ---------
--------------------- | A | | B |
^ -------- ---------
|
-------------------------
| |
--------- ---------
| Simpl | | Compl |
--------- ---------
Any InformationUnit can have any number of Qualifiers associated with it
but I don't know how to map this relationship on repository.xml.
I think I can't put <field-descriport>'s on InformationUnit or
Qualifier, may I use <attribute>'s ?
Can I have only one indirection table to relate InformationUnit and
Qualifier, or I must have one indirection table per cuples of concrete
classes ?
--
Leandro Rodrigo Saad Cruz
IT - Inter Business Tecnologia e Servicos (IB)
http://www.ibnetwork.com.br
http://jakarta.apache.org/ojb
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