1 Reply Latest reply on Aug 22, 2002 2:22 PM by Mark Bennett

    Problems using container managed relation

    Mark Bennett Newbie

      Hi, I'm a long time reader first time poster. I have just started using jBoss for my first big project and am running into problems with the CMP and using container managed relationships.

      I have a session EJB which is meant to correspond with a principal EJB. Unfortunately right now when I try to express this I get the following exception:

      2002-08-22 09:13:04,501 ERROR [org.jboss.ejb.EjbModule] Initialization failed
      org.jboss.deployment.DeploymentException: Role: Session-applies-to-a-Principal with multiplicity
      many using foreign-key mapping is not allowed to have key-fields
      at org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCRelationshipRoleMetaData.loadKeyFields(JD
      BCRelationshipRoleMetaData.java:357)
      at org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCRelationshipRoleMetaData.init(JDBCRelatio
      nshipRoleMetaData.java:157)
      at org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCRelationMetaData.(JDBCRelationMetaD
      ata.java:309)
      at org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCApplicationMetaData.(JDBCApplicatio
      nMetaData.java:383)
      at org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCXmlFileLoader.load(JDBCXmlFileLoader.java
      :75)
      at org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.loadJDBCEntityMetaData(JDBCStoreManag
      er.java:601)
      at org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.create(JDBCStoreManager.java:321)
      at org.jboss.ejb.plugins.CMPPersistenceManager.create(CMPPersistenceManager.java:155)
      at org.jboss.ejb.EntityContainer.create(EntityContainer.java:337)
      at org.jboss.ejb.Container.invoke(Container.java:789)
      at org.jboss.ejb.EntityContainer.invoke(EntityContainer.java:1055)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:491)
      at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:894)
      at $Proxy6.create(Unknown Source)

      I am using xDoclet to express the relation between the two beans using the following markup:
      // ***********************
      // Relationship properties
      // ***********************
      /**
      * Get the principal that this session applies too.
      *
      * @ejb:relation name="Session-Principal"
      * role-name="Session-applies-to-a-Principal"
      * cascade-delete="yes"
      * @jboss:relation fk-constraint="false"
      * related-pk-field="id"
      * fk-column="principal_id"
      * @ejb:interface-method view-type="local"
      */
      public abstract PrincipalLocal getPrincipal();
      /**
      * Set the principal that this session applies too.
      *
      * @ejb:interface-method view-type="local"
      */
      public abstract void setPrincipal(PrincipalLocal principal);

      and,

      // ***********************
      // Relationship properties
      // ***********************
      /**
      * Get the principal that this session applies too.
      *
      * @ejb:relation name="Session-Principal"
      * role-name="Session-applies-to-a-Principal"
      * cascade-delete="yes"
      * @jboss:relation fk-constraint="false"
      * related-pk-field="id"
      * fk-column="principal_id"
      * @ejb:interface-method view-type="local"
      */
      public abstract PrincipalLocal getPrincipal();
      /**
      * Set the principal that this session applies too.
      *
      * @ejb:interface-method view-type="local"
      */
      public abstract void setPrincipal(PrincipalLocal principal);

      If anyone has any idea what's up I would really appreciate some advice. I haven't been able to find many references to this error, though I did find where it comes from in the source! :p

      Cheers!

      -Mark