[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-4559) Envers AuditMetadata Generator causes java.lang.ClassCastException: org.hibernate.mapping.Formula cannot be cast to org.hibernate.mapping.Column

Envers AuditMetadata Generator causes java.lang.ClassCastException: org.hibernate.mapping.Formula cannot be cast to org.hibernate.mapping.Column ------------------------------------------------------------------------------------------------------------------------------------------------ Key: HHH-4559 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4559 Project: Hibernate Core Issue Type: Bug Components: envers Affects Versions: 3.5.0-Beta-2 Environment: Hibernate 3.5.0-Beta-2 RDBMS: Microsoft SQL Server, version: 09.00.4230 JDBC driver: jTDS Type 4 JDBC Driver for MS SQL Server and Sybase, version: 1.2.4 Reporter: Kevin Schmidt Assignee: Adam Warski Priority: Blocker Attachments: envers_formula.patch, ExampleTestClass.java, HHH4559TestCase.java, HHH4559TestCase.java, HibernateEnversIssue-HHH-4559.zip, logForHHH4559TestCase.txt Dear Hibernate Team, I attempted to enable Envers for a Legacy Hibernate Application which uses hbm.xml based mapping files. The building of the SessionFactory fails due to a class cast exception in the Envers code base. It appears that while generating mapping data in the AuditMetadataGenerator it is assumed that a discriminator is a Column, but it can also be a Formula. This causes a class cast exception to be thrown as is shown below (see the last cause in the exception stack trace). I know the response is going to be attach a test case, but I am not even sure how to create a good test case. Are there instructions on the wiki some where? Some starting project I could use to create the test case? In order to reproduce this issue I think it is as simple as enabling auditing for an entity which has a discriminator based on a formula instead of a column. [2009.11.10 09:33:32.302 XYZ] Failed to initialize due to exception. org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scopedTarget.sessionFactory' defined in class path resource [com/xyz/data/spring-config-data.xml]: Invocation of init method failed; nested exception is org.hibernate.HibernateException: could not init listeners at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1338) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409) at java.security.AccessController.doPrivileged(Native Method) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380) at org.springframework.beans.factory.support.AbstractBeanFactory$2.getObject(AbstractBeanFactory.java:302) at com.XYZ.services.springscope.AbstractXYZSpringScopeStrategy.get(AbstractXYZSpringScopeStrategy.java:87) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164) at org.springframework.aop.target.SimpleBeanTargetSource.getTarget(SimpleBeanTargetSource.java:33) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:184) at $Proxy6.openSession(Unknown Source) at com.XYZ.data.hibernate.conversation.Conversation.<init>(Conversation.java:59) at com.XYZ.data.hibernate.conversation.ConversationManagerImpl.startConversation(ConversationManagerImpl.java:128) at com.XYZ.data.hibernate.conversation.ConversationManagerImpl.beginConversation(ConversationManagerImpl.java:110) at com.XYZ.core.initialization.AbstractInitializationThread.run(AbstractInitializationThread.java:145) at com.XYZ.services.thread.ThreadsManager$ThreadWrapper.run(ThreadsManager.java:147) at java.lang.Thread.run(Unknown Source) Caused by: org.hibernate.HibernateException: could not init listeners at org.hibernate.event.EventListeners.initializeListeners(EventListeners.java:205) at org.hibernate.cfg.Configuration.getInitializedEventListeners(Configuration.java:1378) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1367) at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:858) at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:814) at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:732) at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:211) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335) ... 18 more Caused by: java.lang.ClassCastException: org.hibernate.mapping.Formula cannot be cast to org.hibernate.mapping.Column at org.hibernate.envers.configuration.metadata.MetadataTools.addColumns(MetadataTools.java:154) at org.hibernate.envers.configuration.metadata.AuditMetadataGenerator.generateMappingData(AuditMetadataGenerator.java:252) at org.hibernate.envers.configuration.metadata.AuditMetadataGenerator.generateFirstPass(AuditMetadataGenerator.java:327) at org.hibernate.envers.configuration.EntitiesConfigurator.configure(EntitiesConfigurator.java:87) at org.hibernate.envers.configuration.AuditConfiguration.<init>(AuditConfiguration.java:86) at org.hibernate.envers.configuration.AuditConfiguration.getFor(AuditConfiguration.java:99) at org.hibernate.envers.event.AuditEventListener.initialize(AuditEventListener.java:259) at org.hibernate.event.EventListeners$1.processListener(EventListeners.java:198) at org.hibernate.event.EventListeners.processListeners(EventListeners.java:181) at org.hibernate.event.EventListeners.initializeListeners(EventListeners.java:194) ... 26 more