Hi All,
Am I misunderstanding the meaning of Unidirectional? I have declared a
One to One Unidirectional relation from a RepositoryEntry to a
Signature. When JBoss creates the tables, RepositoryEntry is given a
signature field, as expected, but it also creates a RepositoryEntry
field in the Signature table. I don't care about being able to get
from a Signature back to its RepositoryEntry, in fact I want to be
able to add Signatures to other objects in my schema besides
RepositoryEntry.
What's going on? Here's the relations section from the ejb-jar.xml:
<relationships >
<ejb-relation >
<ejb-relation-name>entry-signature</ejb-relation-name>
<!-- unidirectional -->
<ejb-relationship-role >
<ejb-relationship-role-name>has-signature</ejb-relationship-role-name>
<multiplicity>One</multiplicity>
<relationship-role-source >
<ejb-name>RepositoryEntry</ejb-name>
</relationship-role-source>
<cmr-field >
<cmr-field-name>signature</cmr-field-name>
</cmr-field>
</ejb-relationship-role>
<ejb-relationship-role >
<ejb-relationship-role-name>signature-has-entry</ejb-relationship-role-name>
<multiplicity>One</multiplicity>
<cascade-delete/>
<relationship-role-source >
<ejb-name>Signature</ejb-name>
</relationship-role-source>
</ejb-relationship-role>
</ejb-relation>
</relationships>
And in my jbosscmp-jdbc.xml I've done the following:
<relationships>
<ejb-relation>
<ejb-relation-name>entry-signature</ejb-relation-name>
<foreign-key-mapping/>
<ejb-relationship-role>
<ejb-relationship-role-name>has-signature</ejb-relationship-role-name>
<fk-constraint>true</fk-constraint>
</ejb-relationship-role>
<ejb-relationship-role>
<ejb-relationship-role-name>signature-has-entry</ejb-relationship-role-name>
<fk-constraint>false</fk-constraint>
</ejb-relationship-role>
</ejb-relation>
</relationships>
The <fk-constraint> elements I added recently to see if they had an
effect on the Signature table, but they don't.
Next I tried making the multiplicity Many on the RepositoryEntry side
of the relation, and regeneration of the tables shows that the field
in the Signature table is not there anymore. Why is it present in a 1
to 1 unidirectional relation, and not in a Many to One?
Thanks for enlightenment. :)
-Neal
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