[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-5163) ClassCastException when Hibernate tries to cache results using ResultTransformer

ClassCastException when Hibernate tries to cache results using ResultTransformer -------------------------------------------------------------------------------- Key: HHH-5163 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5163 Project: Hibernate Core Issue Type: Bug Components: core Affects Versions: 3.5.1 Reporter: Strong Liu Assignee: Gail Badner Fix For: 3.6.x When Hibernate executes a cacheable query using a ResultTransformer, it will attempt to cache the results AFTER applying the ResultTransformer. The problem is that the ResultTransformer may modify the data in a way that Hibernate won't understand it anymore, and in this case it will generate a ClassCastException when trying to cache it. --------------------------- this can be reproduced by CriteriaQueryTest with following change: papa-pc:testsuite stliu$ svn diff src/test/java/org/hibernate/test/criteria/CriteriaQueryTest.java Index: src/test/java/org/hibernate/test/criteria/CriteriaQueryTest.java =================================================================== --- src/test/java/org/hibernate/test/criteria/CriteriaQueryTest.java (revision 19246) +++ src/test/java/org/hibernate/test/criteria/CriteriaQueryTest.java (working copy) @@ -613,6 +613,7 @@ ) .addOrder( Order.desc("studentName") ) .setResultTransformer( Transformers.aliasToBean(StudentDTO.class) ) + .setCacheable( true ) .list(); assertEquals(2, resultWithAliasedBean.size());