Is it permitted for the foreign key to point not to the primary key of the one side but to a common CMP field?
No, the foreign key constraint must be with a primary key.
Moreover, I'd like to make this relationship unidirectional to the one side, using a Collection typed CMR field.
How this could be accomplished using XDoclet?
Here is it:
* @ejb.interface-method
* @ejb.relation
* name="BeanA in relation with BeanB"
* role-name="BeanA-has-many-BeanB"
* target-ejb="BeanB"
* target-role-name = "BeanB-has-one-BeanA"
*
* @jboss.target-relation
* fk-column = <The column name in the table for BeanB>
* related-pk-field = <The BeanA cmp field name (primary key)>
*/
public abstract java.util.Collection getBeanBs();
/**
* @ejb.interface-method
*/
public abstract void setBeanBs(java.util.Collection arg);
