[hibernate-issues] [Hibernate-JIRA] Commented: (EJB-204) ClassCastException when using <mapped-superclass> in orm.xml

ClassCastException when using <mapped-superclass> in orm.xml ------------------------------------------------------------ Key: EJB-204 URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-204 Project: Hibernate Entity Manager Issue Type: Bug Components: EntityManager Affects Versions: 3.2.0.cr1 Environment: Hibernate 3.2.0 cr2, EntityManager 3.2.0 cr1 and Annotations 3.2.0 cr1 Reporter: Levi Purvis Priority: Minor Fix For: 3.2.0.cr2 Using a <mapped-superclass> element in orm.xml will generate the following exception: javax.persistence.PersistenceException: java.lang.ClassCastException: $Proxy0 at org.hibernate.ejb.Ejb3Configuration.createEntityManagerFactory(Ejb3Configuration.java:217) at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:114) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:37) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:27) ...... Caused by: java.lang.ClassCastException: $Proxy0 at org.hibernate.reflection.java.EJB3OverridenAnnotationReader.getMappedSuperclass(EJB3OverridenAnnotationReader.java:1688) at org.hibernate.reflection.java.EJB3OverridenAnnotationReader.initAnnotations(EJB3OverridenAnnotationReader.java:285) at org.hibernate.reflection.java.EJB3OverridenAnnotationReader.isAnnotationPresent(EJB3OverridenAnnotationReader.java:257) at org.hibernate.reflection.java.JavaXAnnotatedElement.isAnnotationPresent(JavaXAnnotatedElement.java:40) at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:237) at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1034) at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:1015) at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:154) at org.hibernate.ejb.Ejb3Configuration.createEntityManagerFactory(Ejb3Configuration.java:751) at org.hibernate.ejb.Ejb3Configuration.createFactory(Ejb3Configuration.java:151) at org.hibernate.ejb.Ejb3Configuration.createEntityManagerFactory(Ejb3Configuration.java:205) ... 19 more Also see the following thread: http://forum.hibernate.org/viewtopic.php?t=960744