2 Replies Latest reply on Dec 2, 2003 12:43 AM by jw

    Wrong Entity Bean reference after ejbActivate

    jw Newbie

      Hi

      An entity bean holds a refrence to another entity bean (due to speed up access to the parent bean).
      This works well as long as the bean is not passivated . After activating the bean,
      the reference points to a wrong parent bean. What's wrong or is this not allowed?
      Following a short code extraction:


      ==================================


      First version, which doesn't work:


      public class TaskStepBean extends ......AbstractEntityBean{

      private long jParentId;
      private ParentBeanLocal jParentBeanLocal;


      /**
      * @ejb.interface-method
      * In local interface only!
      *
      * @return
      */
      public ParentBeanLocal getParent() throws FinderException {
      if( this.jParentBeanLocal == null){
      final ParentBeanLocalHome home;

      home = (ParentBeanLocalHome)this.getServiceLocator().getLocalHome(ParentBeanLocalHome.class);
      this.jParentBeanLocal = home.findById( this.jParentId);
      }
      return this.jParentBeanLocal;
      }


      }

      ==================================



      Second version adds the ejbPassivate and ejbActivate methods(doesn't work). Even if ejbActivate() was called, the reference is not null ?!

      /**
      *
      */
      public void ejbPassivate(){
      this.jParentBeanLocal = null;
      super.ejbPassivate();
      }



      /**
      *
      */
      public void ejbActivate(){
      super.ejbActivate();
      this.jParentBeanLocal = null;
      }

      ==================================



      Third version with a modified getParent() method (works):

      /**
      * @ejb.interface-method
      * In local interface only!
      *
      * @return
      */
      public ParentBeanLocal getParent() throws FinderException {


      if( this.jParentBeanLocal != null && this.jParentBeanLocal.getId() != this.jParentId){
      this.jParentBeanLocal = null;
      }

      if( this.jParentBeanLocal == null){
      final ParentBeanLocalHome home;

      home = (ParentBeanLocalHome)this.getServiceLocator().getLocalHome(ParentBeanLocalHome.class);
      this.jParentBeanLocal = home.findById( this.jParentId);
      }

      return this.jParentBeanLocal;
      }