Sound like AddressGroup is a collection of addresses. Through the 'collection-class'
attribute on collection descriptors you can specify your own implementation of the
collection class to use for a particular relationship. I think it needs to implement
Collection, but other than that it seems pretty straightforward.
<class-descriptor class="com.foo.Person">
...
<collection-descriptor
name="addresses"
element-class-ref="com.foo.Address"
collection-class="com.foo.AddressGroup
>
<inverse-foreignkey .../>
</collection-descriptor>
</class-descriptor>
-----Original Message-----
From: Robert J Celestino [mailto:[EMAIL PROTECTED]
Sent: Thursday, October 30, 2003 8:14 PM
To: OJB Users List
Subject: o/r mapping question
Hello all,
I am stumped by what is posibly a very simple mapping problem.
Consider something like this
Person is stored in the person table
Person has-a AddressGroup. AddressGroup is not stored in the DB
AddressGroup has a list of Addresses
Address is stored in the address table. Has a column
called PersonId that indicates the person it belongs to
This is a little contrived but bear with me.
Clearly Person could have a list of addresses, but for various reasons it has the
intermediate class AddressGroup instead.
I know how to solve this if AddressGroup was stored in the DB, but it is not. It is
purely a domain class.
How can I get ojb to create and write this class without actually writing it to the
db?
Thanks very much
Bob c
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Bob Celestino
SAS Research and Development
919 - 531 - 9425
[EMAIL PROTECTED]
SAS - The Power to Know
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