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  1. JBoss Enterprise Application Platform 4 and 5
  2. JBPAPP-5965

HHH-2763: Unable to use bidiretional lazy relationship together with hibernate callback-listeners

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Details

    • Bug
    • Resolution: Won't Do
    • Major
    • TBD EAP 5
    • EAP_EWP 5.1.0
    • Hibernate
    • None

    • Fedora 12, jdk1.6, MySQL 5.1 InnoDB

    • Hide
      You are not allowed to initialize lazy collections or proxies during a flush. The workaround is for the listener to use a different session to initialize the collection. The following is an example of the workaround:

      <programlisting language="Java" role="JAVA">
      SessionImplementor si = (SessionImplementor)(event.getSession());
      Session anotherSession = si.getFactory().openSession(si.getJDBCContext().connection());
      Object obj = anotherSession.get( event.getEntity().getClass(),event.getId());
      if(o instanceof Parent){
      Parent parent = (Parent)obj;
      Iterator it = parent.getChildren().iterator();
      while(it.hasNext()){
      Child child = (Child)it.next();
      }
      }
      anotherSession.close()
      </programlisting>
      Show
      You are not allowed to initialize lazy collections or proxies during a flush. The workaround is for the listener to use a different session to initialize the collection. The following is an example of the workaround: <programlisting language="Java" role="JAVA"> SessionImplementor si = (SessionImplementor)(event.getSession()); Session anotherSession = si.getFactory().openSession(si.getJDBCContext().connection()); Object obj = anotherSession.get( event.getEntity().getClass(),event.getId()); if(o instanceof Parent){ Parent parent = (Parent)obj; Iterator it = parent.getChildren().iterator(); while(it.hasNext()){ Child child = (Child)it.next(); } } anotherSession.close() </programlisting>
    • Documented as Known Issue

    Description

      When you use a hibernate event, if you try accessing a lazy collection, then the CollectionEntry corresponding to the lazily loaded collection get added to the PersistenceContext and hibernate crashes when it finds those entries because they are neither processed, neither ignored.

      The exception below is fired:
      Caused by: org.hibernate.AssertionFailure: collection [com.qualitype.testcase.server.ejb.entity.EntityB.entitiesOfA] was not processed by flush()
      at org.hibernate.engine.CollectionEntry.postFlush(CollectionEntry.java:205)
      at org.hibernate.event.def.AbstractFlushingEventListener.postFlush(AbstractFlushingEventListener.java:333)
      at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:28)
      at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
      at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
      at org.hibernate.ejb.AbstractEntityManagerImpl$1.beforeCompletion(AbstractEntityManagerImpl.java:515)
      ... 29 more

      Please look for detailed comments about it at:
      http://opensource.atlassian.com/projects/hibernate/browse/HHH-2763

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          clones

          Bug - A problem that impairs or prevents the functions of the product. JBPAPP-5966 CLONE - HHH-2763: Unable to use bidiretional lazy relationship together with hibernate callback-listeners

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Resolved

          Bug - A problem that impairs or prevents the functions of the product. JBPAPP-5995 DOCUMENT - HHH-2763: Unable to use bidiretional lazy relationship together with hibernate callback-listeners

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed

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            People

              shaozliu Strong Liu(刘少壮) (Inactive)
              rhn-support-alazarot Alessandro Lazarotti
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              Dates

                Created:
                Updated:
                Resolved: