I'm trying to create a many-to-many relation for JBoss where the keys
consist of multiple fields.
For example, consider the following code that has single-field keys:
public abstract class FooBean {
.
.
/**
* @ejb:relation name="foo-bar" role-name="foo-role"
* @jboss:relation
* fk-column="barId"
* related-pk-field="id"
*/
public abstract Collection getBars();
}
public abstract class BarBean {
.
.
/**
* @ejb:relation name="foo-bar" role-name="bar-role"
* @jboss:relation
* fk-column="fooKey1"
* related-pk-field="key1"
*/
public abstract Collection getFoos();
}
XDoclet will generate this in jbosscmp-jdbc.xml:
<ejb-relation>
<ejb-relation-name>foo-bar</ejb-relation-name>
<relation-table-mapping>
</relation-table-mapping>
<ejb-relationship-role>
<ejb-relationship-role-name>bar-role</ejb-relationship-role-name>
<key-fields>
<key-field>
<field-name>id</field-name>
<column-name>barId</column-name>
</key-field>
</key-fields>
</ejb-relationship-role>
<ejb-relationship-role>
<ejb-relationship-role-name>foo-role</ejb-relationship-role-name>
<key-fields>
<key-field>
<field-name>key1</field-name>
<column-name>fooKey1</column-name>
</key-field>
</key-fields>
</ejb-relationship-role>
</ejb-relation>
So far so good, but what if I want Foo to have a compound key, consisting of
key1 and key2, like this:
<ejb-relationship-role>
<ejb-relationship-role-name>foo-role</ejb-relationship-role-name>
<key-fields>
<key-field>
<field-name>key1</field-name>
<column-name>fooKey1</column-name>
</key-field>
<key-field>
<field-name>key2</field-name>
<column-name>fooKey2</column-name>
</key-field>
</key-fields>
</ejb-relationship-role>
How do I do this in XDoclet? The fk-column and related-pk-field attributes
in @jboss:relation only seem to support one field per key.
Thanks.
Martin
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