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mika101
 Post subject: NonUniqueObjectException: when updating an entity
PostPosted: Tue Oct 25, 2011 3:38 pm 
Newbie

Joined: Mon Oct 17, 2011 1:50 pm
Posts: 5
i have three entities

-Authority , Permission , PermissionCategory

-Desc: authority can contain many permissions, and permission can be in many authorities, and permissionCategory can contain many permissions.

1- Authority > Many To Many With Permission

Code:
class Authority{
       
        @ManyToMany(cascade = CascadeType.ALL)
           @JoinTable(name = "authority_permission", joinColumns = { @JoinColumn(name = "authority_id", nullable = false, updatable = false) }, inverseJoinColumns = { @JoinColumn(name = "permission_id", nullable = false, updatable = false) })
           private Set<Permission> permissions = new HashSet<Permission>(0);
       
        }


2- PermissionCategory > One To Many With Permission



Code:
class PermissionCategory{
   
        @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
           @JoinTable(name = "perm_cat_map", joinColumns = { @JoinColumn(name = "perm_cat_id") }, inverseJoinColumns = { @JoinColumn(name = "permission_id") })
           private Set<Permission> permissions = new HashSet<Permission>(0);
       
           }


3- Permission > Many To One With PermissionCategory

Code:
    class Permission{
   
    @ManyToOne(cascade = CascadeType.ALL)
    private PermissionCategory permissionCategory;
   
    }


Case 1: Adding a new role

- When adding a new role, user chooses already existing permissions, so i need to insert in authority and in join table (Authority_Permission)

so i make it as follows:
Code:
    Set<Permission> permissions=new HashSet<Permission>;
    Permission permission=permissionDao.getPermissionById(1);
    permissions.add(permission);   
    authority.setPermissions(permissions);
    sessionFactory.getCurrentSession().merge(authority); // it works only with merge


this case works fine.

Case 2: Updating a role

- User may change the role properties, and the associated permissions, so what's needed is to updated the authority object and update the associated permissions, if a permission was removed then remove it and if a permission was added to add it.

so i made it as follows:

Code:
   
        Set<Permission> permissions=new HashSet<Permission>;
        Permission permission=permissionDao.getPermissionById(1);
        permissions.add(permission);   
        authority.setPermissions(permissions);
        sessionFactory.getCurrentSession().update(authority);


problem is when trying to update a role as mentioned above, i am getting exception:


Code:
org.springframework.orm.hibernate3.HibernateSystemException: a different object with the same identifier value was already associated with the session: [com.myapp.domain.Permission#3]; nested exception is org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [com.myapp.domain.Permission#3]
    javax.faces.FacesException: #{authority.addOrUpdateAuthority}: org.springframework.orm.hibernate3.HibernateSystemException: a different object with the same identifier value was already associated with the session: [com.myapp.domain.Permission#3]; nested exception is org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [com.myapp.domain.Permission#3]
       at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
       at javax.faces.component.UICommand.broadcast(UICommand.java:315)
       at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
       at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
       at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
       at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
       at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
       at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
       at com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:118)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:368)
       at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:99)
       at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:119)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:177)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:57)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:169)
       at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
       at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
       at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
       at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471)
       at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402)
       at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)
       at com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:110)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:368)
       at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
       at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:119)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:177)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79)
       at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
       at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:169)
       at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
       at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
       at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
       at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
       at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:964)
       at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
       at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
       at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
       at java.lang.Thread.run(Thread.java:619)
    Caused by: javax.faces.el.EvaluationException: org.springframework.orm.hibernate3.HibernateSystemException: a different object with the same identifier value was already associated with the session: [com.myapp.domain.Permission#3]; nested exception is org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [com.myapp.domain.Permission#3]
       at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
       at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
       ... 87 more
    Caused by: org.springframework.orm.hibernate3.HibernateSystemException: a different object with the same identifier value was already associated with the session: [com.myapp.domain.Permission#3]; nested exception is org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [com.myapp.domain.Permission#3]
       at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:679)
       at org.springframework.orm.hibernate3.HibernateTransactionManager.convertHibernateAccessException(HibernateTransactionManager.java:793)
       at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:664)
       at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754)
       at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
       at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:393)
       at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120)
       at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
       at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
       at $Proxy30.updateAuthority(Unknown Source)
       at com.myapp.beans.AuthorityBean.addOrUpdateAuthority(AuthorityBean.java:110)
       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:597)
       at org.apache.el.parser.AstValue.invoke(AstValue.java:262)
       at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278)
       at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
       at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
       ... 88 more
    Caused by: org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [com.myapp.domain.Permission#3]
       at org.hibernate.engine.StatefulPersistenceContext.checkUniqueness(StatefulPersistenceContext.java:637)
       at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:305)
       at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:246)
       at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:112)
       at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
       at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:677)
       at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:669)
       at org.hibernate.engine.CascadingAction$5.cascade(CascadingAction.java:252)
       at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:392)
       at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:335)
       at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:204)
       at org.hibernate.engine.Cascade.cascadeCollectionElements(Cascade.java:425)
       at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java:362)
       at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:338)
       at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:204)
       at org.hibernate.engine.Cascade.cascade(Cascade.java:161)
       at org.hibernate.event.def.AbstractFlushingEventListener.cascadeOnFlush(AbstractFlushingEventListener.java:154)
       at org.hibernate.event.def.AbstractFlushingEventListener.prepareEntityFlushes(AbstractFlushingEventListener.java:145)
       at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:88)
       at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50)
       at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1206)
       at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:375)
       at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:137)
       at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:656)
       ... 104 more


please advise.
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mika101
 Post subject: Re: NonUniqueObjectException: when updating an entity
PostPosted: Wed Oct 26, 2011 5:54 am 
Newbie

Joined: Mon Oct 17, 2011 1:50 pm
Posts: 5
well it works fine after i make merging then save or update, as follows:

1- Save:

Code:
authority = (Authority) getCurrentSession().merge(authority);
    sessionFactory.getCurrentSession().save(authority);



2- Update:

Code:
authority = (Authority) getCurrentSession().merge(authority);
    sessionFactory.getCurrentSession().update(authority);


but i need some experienced explanation here from anyone, why i need merging then save or update, and if that solution is the best, just found it in a blog.
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