Hi,

I have recently upgraded a woking system from working with hibernate 2.1 to hibernate 3.0

I have an abstact class called EProduct and few subclasses. I am using Long as the identifyer.

I have a HQL query that is working with version 2.1. the query is:

select eproduct from com.exlibris.verde.eproduct.EProduct as eproduct where (eproduct.instanceCode = ? and eproduct.id = ?) and ROWNUM BETWEEN 1 and 1


but for version 3.0 it throws abstract instantiation:

org.hibernate.InstantiationException: Cannot instantiate abstract class or interface: com.exlibris.verde.eproduct.EProduct
at org.hibernate.tuple.PojoInstantiator.instantiate(PojoInstantiator.java:56)
at org.hibernate.tuple.PojoInstantiator.instantiate(PojoInstantiator.java:84)
at org.hibernate.tuple.AbstractTuplizer.instantiate(AbstractTuplizer.java:221)
at org.hibernate.persister.entity.BasicEntityPersister.instantiate(BasicEntityPersister.java:2959)
at org.hibernate.impl.SessionImpl.instantiate(SessionImpl.java:1049)
at org.hibernate.impl.SessionImpl.instantiate(SessionImpl.java:1041)
at org.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:933)
at org.hibernate.loader.Loader.getRow(Loader.java:855)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:305)
at org.hibernate.loader.Loader.doQuery(Loader.java:412)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:218)
at org.hibernate.loader.Loader.doList(Loader.java:1593)
at org.hibernate.loader.Loader.list(Loader.java:1577)
at org.hibernate.hql.classic.QueryTranslatorImpl.list(QueryTranslatorImpl.java:890)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:844)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:74)
at com.exlibris.verde.util.PersistenceManager.executeQuery(PersistenceManager.java:418)
at com.exlibris.verde.search.SearchEngine.getEntity(SearchEngine.java:115)
at com.exlibris.verde.eproduct.EProductMngmtDomain.getEProduct(EProductMngmtDomain.java:828)
at com.exlibris.verde.api.EProductMngmtServiceBean.getExtendedEProduct(EProductMngmtServiceBean.java:1011)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:683)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:185)
at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:72)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:84)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:315)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:148)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:120)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
at org.jboss.ejb.StatelessSessionContainer.internalInvoke(StatelessSessionContainer.java:331)
at org.jboss.ejb.Container.invoke(Container.java:723)
at sun.reflect.GeneratedMethodAccessor102.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.mx.server.ReflectedDispatcher.dispatch(ReflectedDispatcher.java:60)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:61)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:53)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:185)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:473)
at org.jboss.invocation.local.LocalInvoker.invoke(LocalInvoker.java:97)
at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:90)
at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:46)
at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:53)
at org.jboss.proxy.ejb.StatelessSessionInterceptor.invoke(StatelessSessionInterceptor.java:100)
at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:85)
at $Proxy197.getExtendedEProduct(Unknown Source)
at com.exlibris.verde.ckbweb.utilities.mediator.services.delegator.EProductDelegatorService.getExtendedEProduct(EProductDelegatorService.java:100)
at com.exlibris.verde.ckbweb.search.resource.eproduct.EStandaloneAction.doAfter(EStandaloneAction.java:101)
at com.exlibris.verde.ckbweb.BaseBasketAction.doAction(BaseBasketAction.java:82)
at com.exlibris.verde.ckbweb.BaseAction.execute(BaseAction.java:170)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.exlibris.verde.ckbweb.utilities.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:72)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.jboss.web.tomcat.security.JBossSecurityMgrRealm.invoke(JBossSecurityMgrRealm.java:275)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:535)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)
I also tried to set the query translation factory property to be the classis one but it didn't help

please advise

Hi,

I think you might have an inconsitent or corrupted record in the Database, which lead to this error!!!!!!

unfortunatly this isn't the case and like I have said the same records are OK when using version 2.1.

Was there any change in hierarchy with version 3.0?

Hi,

Here we go,

http://opensource2.atlassian.com/projec ... x?page=all


The problem can be resolved using Hibernate 3.1.1

Hi,

Thank you but I have found the answer.

In version 2.1 XDoclet is creating the class (for the superclass) and the subclass elements in the same ClassHierarchy.hbm.xml.

Because Hibernate v 3.0 requires XDoclet version 1.2.x I had to upgrade XDoclet as well and this one is creating hbm file for each subclass seperatly which means that I had to add configuration entries in hibernate.cfg.xml