Uploaded image for project: 'JBoss Enterprise Application Platform 4 and 5'
  1. JBoss Enterprise Application Platform 4 and 5
  2. JBPAPP-4377

CLONE -HHH-5163 Bug when applying a ResultTransformer on a cacheable projection based criteria

    XMLWordPrintable

Details

    • Bug
    • Resolution: Won't Do
    • Major
    • TBD EAP 4
    • 4.2.0.GA_CP09, 4.3.0.GA_CP08, 4.3.0.GA_CP09
    • Hibernate
    • None
    • Release Notes
    • Hide
      When Hibernate executes a cacheable query using a <classname>ResultTransformer</classname>, it will attempt to cache the results after applying the <classname>ResultTransformer</classname>. However, the data may be modified so that Hibernate cannot read it. In this case, a <exceptionname>ClassCastException</exceptionname> will occur when attempting to cache the results.
      Show
      When Hibernate executes a cacheable query using a <classname>ResultTransformer</classname>, it will attempt to cache the results after applying the <classname>ResultTransformer</classname>. However, the data may be modified so that Hibernate cannot read it. In this case, a <exceptionname>ClassCastException</exceptionname> will occur when attempting to cache the results.
    • Documented as Known Issue

    Description

      Typically following code will raise a CCE
      Criteria crit = session.createCriteria(MyEntity.class);
      crit.setProjection( Projections.projectionList()
      .add( Projections.alias(Projections.property("description"), "description" ))
      .add( Projections.alias(Projections.property("id"), "id" ))
      );
      crit.setCacheable(true);
      crit.setResultTransformer(Transformers.aliasToBean(MyEntity.class));
      List results = crit.list();

      java.lang.ClassCastException: org.hibernate.test.case756453.MyEntity
      at org.hibernate.cache.StandardQueryCache.put(StandardQueryCache.java:106)
      at org.hibernate.loader.Loader.putResultInQueryCache(Loader.java:2208)
      at org.hibernate.loader.Loader.listUsingQueryCache(Loader.java:2159)
      at org.hibernate.loader.Loader.list(Loader.java:2117)
      at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:118)
      at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1596)
      at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:306)

      There is a problem between the real cached value and the expected cached value (maybe the transformer is applied too soon or query cache is not aware the cached value is already transformed,...).

      http://opensource.atlassian.com/projects/hibernate/browse/HHH-5163

      Attachments

        Activity

          People

            shaozliu Strong Liu(刘少壮) (Inactive)
            apatrici Anthony Patricio
            Votes:
            0 Vote for this issue
            Watchers:
            0 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved: