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mr_aravinth
 Post subject: Found two representations of same collection.
PostPosted: Mon Dec 11, 2006 5:16 pm 
Newbie

Joined: Mon Dec 11, 2006 4:43 pm
Posts: 1
Hibernate version: 3.1.3 ]

Full stack trace of any exception that occurs:
Code:
org.mediaslate.og.web.admin.webapp.action.ActionExceptionHandler 2006-12-11 15:39:32,000-- ERROR -- org.springframework.orm.hibernate3.HibernateSystemException: Found two representations of same collection: org.mediaslate.og.web.admin.model.User.roles; nested exception is
org.hibernate.HibernateException: Found two representations of same collection: org.mediaslate.og.web.admin.model.User.roles
org.hibernate.HibernateException: Found two representations of same collection: org.mediaslate.og.web.admin.model.User.roles
        at org.hibernate.engine.Collections.processReachableCollection(Collections.java:153)
        at org.hibernate.event.def.FlushVisitor.processCollection(FlushVisitor.java:37)
        at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:101)
        at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:61)
        at org.hibernate.event.def.AbstractVisitor.processEntityPropertyValues(AbstractVisitor.java:55)
        at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:124)
        at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:195)
        at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:76)
        at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:26)
        at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:985)
        at org.springframework.orm.hibernate3.HibernateTemplate$29.doInHibernate(HibernateTemplate.java:815)
        at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:366)
        at org.springframework.orm.hibernate3.HibernateTemplate.flush(HibernateTemplate.java:813)
        at org.mediaslate.og.web.admin.dao.hibernate.UserDaoHibernate.saveUser(UserDaoHibernate.java:172)
        at org.mediaslate.og.web.admin.dao.hibernate.UserDaoHibernate$$FastClassByCGLIB$$c983a0a3.invoke(<generated>)
        at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
        at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:705)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:148)
        at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:51)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:170)
        at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:53)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:170)
        at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:643)
        at org.mediaslate.og.web.admin.dao.hibernate.UserDaoHibernate$$EnhancerByCGLIB$$593e8602.saveUser(<generated>)
        at org.mediaslate.og.web.admin.service.impl.UserManagerImpl.saveUser(UserManagerImpl.java:63)
        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:585)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:287)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:181)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:148)
        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:170)
        at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:51)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:170)
        at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:53)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:170)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:176)
        at $Proxy54.saveUser(Unknown Source)
        at org.mediaslate.og.web.admin.webapp.action.UserAction.delete(UserAction.java:242)
        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:585)
        at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:274)
        at org.mediaslate.og.web.admin.webapp.action.BaseAction.execute(BaseAction.java:258)
        at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
        at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
        at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118)
        at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:375)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.mediaslate.og.web.admin.webapp.filter.GZIPFilter.doFilterInternal(GZIPFilter.java:42)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.mediaslate.og.web.admin.webapp.filter.LocaleFilter.doFilterInternal(LocaleFilter.java:49)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:75)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at com.opensymphony.clickstream.ClickstreamFilter.doFilter(ClickstreamFilter.java:42)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.springframework.orm.hibernate3.support


Name and version of the database you are using: MySQL 1.1.20

Hi,

I'm getting the above exception when I try to update an object into the database through hibernate. The update is into a User table which has a many-many relationship with a Roles table and is mapped as a collection SET in the mapping file.

The code flow is:
1. Get the User object.
Code:
User user = (User)getHibernateTemplate().get(User.class, userId);
getHibernateTemplate().clear();

2. Perform the changes.
Code:
user.setDeletedOn(...);

3. Save the modified User object.
Code:
getHibernateTemplate().saveOrUpdate(user);
getHibernateTemplate().flush();


The exception is occuring when the flush() method is called. If I remove the clear() method when I get the User from the database, then it works fine. But for some other logical reason I should clear the session.

I have tried all the solution recommended in other similar posts but of no use. The exception keeps occuring. Any help would be appreciated.

Thanx in Advance,
- Aravinth.
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