public Container getContainer() 
{
      return container;
}

 public Object invoke(Invocation mi) throws Exception 
{
      if(!(mi instanceof CMRInvocation))
         return getNext().invoke(mi);
      CMRMessage relationshipMessage = ((CMRInvocation)mi).getCmrMessage();
      if(relationshipMessage == null)
      {
         // Not a relationship message. Invoke down the chain
         return getNext().invoke(mi);
      }
      // We are going to work with the context a lot
      EntityEnterpriseContext ctx = (EntityEnterpriseContext)mi.getEnterpriseContext();
      JDBCCMRFieldBridge cmrField = (JDBCCMRFieldBridge)mi.getArguments()[0];
      if(CMRMessage.GET_RELATED_ID == relationshipMessage)
      {
         // call getRelateId
         if(log.isTraceEnabled())
         {
            log.trace("Getting related id: field=" + cmrField.getFieldName() + " id=" + ctx.getId());
         }
         return cmrField.getRelatedId(ctx);
      }
      else if(CMRMessage.ADD_RELATION == relationshipMessage)
      {
         // call addRelation
         Object relatedId = mi.getArguments()[1];
         if(log.isTraceEnabled())
         {
            log.trace("Add relation: field=" + cmrField.getFieldName() +
               " id=" + ctx.getId() +
               " relatedId=" + relatedId);
         }
         cmrField.addRelation(ctx, relatedId);
         return null;
      }
      else if(CMRMessage.REMOVE_RELATION == relationshipMessage)
      {
         // call removeRelation
         Object relatedId = mi.getArguments()[1];
         if(log.isTraceEnabled())
         {
            log.trace("Remove relation: field=" + cmrField.getFieldName() +
               " id=" + ctx.getId() +
               " relatedId=" + relatedId);
         }
         cmrField.removeRelation(ctx, relatedId);
         return null;
      }
      else if(CMRMessage.SCHEDULE_FOR_CASCADE_DELETE == relationshipMessage)
      {
         JDBCEntityBridge entity = (JDBCEntityBridge)cmrField.getEntity();
         entity.scheduleForCascadeDelete(ctx);
         return null;
      }
      else if(CMRMessage.SCHEDULE_FOR_BATCH_CASCADE_DELETE == relationshipMessage)
      {
         JDBCEntityBridge entity = (JDBCEntityBridge)cmrField.getEntity();
         entity.scheduleForBatchCascadeDelete(ctx);
         return null;
      }
      else
      {
         // this should not be possible we are using a type safe enum
         throw new EJBException("Unknown cmp2.0-relationship-message=" +
            relationshipMessage);
      }
}

 public  void setContainer(Container container) 
{
      this.container = (EntityContainer)container;
      if(container != null)
      {
         log = Logger.getLogger(
            this.getClass().getName() +
            "." +
            container.getBeanMetaData().getEjbName());
      }
}