CMR cascade-delete problem with 1:Many Unidirectional Relati
I have a simple 1:many relationship: a Person can have many Phone Numbers. When I delete a person, I want to have all phone numbers of this person to be deleted too (using cascade-delete).
I'm using Jboss3.0.4 and Firebird1.0.
[B]
My problem:
Deleting a person, who has NO phone numbers in the phone-Table works fine.
BUT I get an error when I try to delete a person that has one or more corresponding phone entries.
I use the method personHome.remove(new Integer(2)); and the person with primary key 2 exists.[/B]
The person is not been deleted and I get following message:
2003-02-24 23:09:13,813 ERROR [org.jboss.ejb.plugins.LogInterceptor] RuntimeException:
java.lang.NullPointerException
at org.jboss.ejb.plugins.local.BaseLocalContainerInvoker.getEntityEJBLocalObject(BaseLocalContainerInvoker.java:199)
at org.jboss.ejb.plugins.local.BaseLocalContainerInvoker.getEntityLocalCollection(BaseLocalContainerInvoker.java:210)
at org.jboss.ejb.plugins.cmp.jdbc.bridge.RelationSet.toArray(RelationSet.java:246)
at java.util.ArrayList.(ArrayList.java:132)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCRemoveEntityCommand.removeFromRelations(JDBCRemoveEntityCommand.java:136)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCRemoveEntityCommand.execute(JDBCRemoveEntityCommand.java:70)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.removeEntity(JDBCStoreManager.java:635)
at org.jboss.ejb.plugins.CMPPersistenceManager.removeEntity(CMPPersistenceManager.java:542)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.removeEntity(CachedConnectionInterceptor.java:431)
at org.jboss.ejb.EntityContainer.remove(EntityContainer.java:507)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
[...]
ejb-jar.xml
-----------
<ejb-relation>
<ejb-relation-name>Person-Phone</ejb-relation-name>
<ejb-relationship-role>
<ejb-relationship-role-name>Person-has-phone</ejb-relationship-role-name>
One
<relationship-role-source>
<ejb-name>PersonEJB</ejb-name>
</relationship-role-source>
</ejb-relationship-role>
<ejb-relationship-role>
<ejb-relationship-role-name>Phone-belongs-to-person</ejb-relationship-role-name>
Many
<cascade-delete/>
<relationship-role-source>
<ejb-name>PhoneEJB</ejb-name>
</relationship-role-source>
<cmr-field>
<cmr-field-name>tel_person</cmr-field-name>
</cmr-field>
</ejb-relationship-role>
</ejb-relation>
jboss-cmpjdbc.xml
------------------
<ejb-relation>
<ejb-relation-name>Person-Phone</ejb-relation-name>
<foreign-key-mapping/>
<ejb-relationship-role>
<ejb-relationship-role-name>Person-has-phone</ejb-relationship-role-name>
<key-fields>
<key-field>
<field-name>p_id</field-name>
<column-name>tel_person</column-name>
</key-field>
</key-fields>
</ejb-relationship-role>
<ejb-relationship-role>
<ejb-relationship-role-name>Phone-belongs-to-person</ejb-relationship-role-name>
<key-fields/>
</ejb-relationship-role>
</ejb-relation>