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  1. JBoss Enterprise Application Platform 4 and 5
  2. JBPAPP-4175

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

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Details

    • Bug
    • Resolution: Done
    • Major
    • EAP_EWP 5.1.1
    • EAP 5.0.0.CR5, EAP 5.0.1.CR2, EAP 5.0.1, EAP_EWP 5.1.0
    • Hibernate
    • None
    • Release Notes
    • Hide
      When Hibernate executed a cacheable query using a <classname>ResultTransformer</classname>, it attempted to cache the results after applying the <classname>ResultTransformer</classname>. However, the data might be modified so that Hibernate could not read it. In this case, a <exceptionname>ClassCastException</exceptionname> would occur when attempting to cache the results.

      This issue is fixed by introducing three new classes to the API:
      org.hibernate.transform.AliasedTupleSubsetResultTransformer
      org.hibernate.transform.CacheableResultTransformer
      org.hibernate.transform.TupleSubsetResultTransformer

      Review the Javadoc for Hibernate for more details.
      Show
      When Hibernate executed a cacheable query using a <classname>ResultTransformer</classname>, it attempted to cache the results after applying the <classname>ResultTransformer</classname>. However, the data might be modified so that Hibernate could not read it. In this case, a <exceptionname>ClassCastException</exceptionname> would occur when attempting to cache the results. This issue is fixed by introducing three new classes to the API: org.hibernate.transform.AliasedTupleSubsetResultTransformer org.hibernate.transform.CacheableResultTransformer org.hibernate.transform.TupleSubsetResultTransformer Review the Javadoc for Hibernate for more details.
    • Documented as Resolved 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

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          Task - Represents a small unit of work that is not end-user facing. JBPAPP-4320 upgrade hibernate components for EPA 5.1

          • 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)
              apatrici Anthony Patricio
              Misty Stanley-Jones Misty Stanley-Jones (Inactive)
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                Created:
                Updated:
                Resolved: