Hi! I already posted on the user list, but I looks like due to the massive posts it got lost. I took many time to think about this issue, and so I'll post it to your dev list as I'll eventually try to create a patch for it.
Hibernate version: 3.2.0 rc1 A serialized/deserialized DetachedCriteria do not work correctly with the query cache. The problem is the ResultTransformer in QueryKey. In CriteraImpl the resultTransformer will be set to Criteria.ROOT_ENTITY. This makes it down into the QueryKey. After serialize/deserialize the instance of resultTransformer in CriteriaImpl has changed (not that a surprise ;-) ) and thus - in the end - the QueryKey changed. Subsequent lookup in the query-cache will no longer work. The query will be executed again and put int the query-cache. The cache grows - every lookup failes. I think every ResultTransformer used as singleton should implement some custom deserialization code so that always the same instance will be returned - this is one solution. What solution do you prefer? Just in case I manage to send a patch. Thanks! Ciao, Mario ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ hibernate-devel mailing list hibernate-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/hibernate-devel
