hibernate LazyInitializationException. with OpenSessionInViewInterceptor.

[cablepuff]

Hi i am getting an L.I.E.

User.hbm.xml

<set name="userGroups" 
             inverse="true" 
             access="field"> 
          <key column="user_id"/> 
          <one-to-many class="UserGroup"/> 
        </set>

UserGroup.hbm.xml

<class name="UserGroup" table="user_group" mutable="false"> 
      <composite-id name="id" class="UserGroup$Id"> 
        <key-property name="userId"  column="user_id"/> 
        <key-property name="groupId" column="group_id"/> 
      </composite-id> 
     
       <many-to-one 
           name="user" 
           column="user_id" 
           not-null="true" 
           insert="false" 
           update="false" 
           access="field"/> 
       <many-to-one 
           name="group" 
           column="group_id" 
           not-null="true" 
           insert="false" 
           update="false" 
           access="field"/> 
  </class>

The error trace.

org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: myproject.util.security.domain.User.userGroups, no session or session was closed 
   org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358) 
   org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350) 
   org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:343) 
   org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86) 
   org.hibernate.collection.PersistentSet.iterator(PersistentSet.java:163) 
   myproject.util.security.domain.User.getAuthorities(User.java:160) 
   org.springframework.security.providers.dao.AbstractUserDetailsAuthenticationProvider.createSuccessAuthentication(AbstractUserDetailsAuthenticationProvider.java:183) 
   org.springframework.security.providers.dao.AbstractUserDetailsAuthenticationProvider.authenticate(AbstractUserDetailsAuthenticationProvider.java:162) 
   org.springframework.security.providers.ProviderManager.doAuthentication(ProviderManager.java:195) 
   org.springframework.security.AbstractAuthenticationManager.authenticate(AbstractAuthenticationManager.java:46) 
   org.springframework.security.ui.webapp.AuthenticationProcessingFilter.attemptAuthentication(AuthenticationProcessingFilter.java:81) 
   org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp(AbstractProcessingFilter.java:249) 
   org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) 
   org.springframework.security.config.OrderedFilterBeanDefinitionDecorator$OrderedFilterDecorator.doFilter(OrderedFilterBeanDefinitionDecorator.java:93) 
   org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:371) 
   org.springframework.security.ui.logout.LogoutFilter.doFilterHttp(LogoutFilter.java:87) 
   org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) 
   org.springframework.security.config.OrderedFilterBeanDefinitionDecorator$OrderedFilterDecorator.doFilter(OrderedFilterBeanDefinitionDecorator.java:93) 
   org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:371) 
   org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:229) 
   org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) 
   org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:371) 
   org.springframework.security.concurrent.ConcurrentSessionFilter.doFilterHttp(ConcurrentSessionFilter.java:97) 
   org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) 
   org.springframework.security.config.OrderedFilterBeanDefinitionDecorator$OrderedFilterDecorator.doFilter(OrderedFilterBeanDefinitionDecorator.java:93) 
   org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:371) 
   org.springframework.security.securechannel.ChannelProcessingFilter.doFilterHttp(ChannelProcessingFilter.java:116) 
   org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) 
   org.springframework.security.config.OrderedFilterBeanDefinitionDecorator$OrderedFilterDecorator.doFilter(OrderedFilterBeanDefinitionDecorator.java:93) 
   org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:371) 
   org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:174) 
   org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:183) 
   org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:138)

User.java

@Override 
    public GrantedAuthority[] getAuthorities() 
    { 
        Collection<Group> authorities = new HashSet<Group>(); 
        for (UserGroup userGroup : getUserGroups()) 
        { 
            authorities.add(userGroup.getGroup()); 
        } 
        return authorities.toArray(new GrantedAuthority[0]); 
    }

Here is my spring-servlet.xml file.

<bean id="securitySessionInViewInterceptor" 
        class="org.springframework.orm.hibernate3.support.OpenSessionInViewInterceptor"> 
        <property name="sessionFactory"> 
            <ref bean="exampleSessionFactory"/> 
        </property> 
        <property name="flushModeName" value="FLUSH_AUTO"/> 
    </bean> 


<!--  url mapping  --> 
    <bean id="simpleUrlMapping" 
        class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> 
        <property name="interceptors"> 
            <list> 
                <ref bean="securitySessionInViewInterceptor" /> 
            </list> 
        </property> 
        <property name="alwaysUseFullPath"> 
            <value>false</value> 
        </property> 
        <property name="mappings"> 
            <props> 
                <prop key="/index.htm">welcomeController</prop> 
                <prop key="/group.htm">groupController</prop> 
                <prop key="/application.htm">applicationController</prop> 
                <prop key="${loginFormUrl}">loginController</prop> 
                <prop key="${authenticationFailureUrl}">loginErrorController</prop> 
                <prop key="${logoutUrl}">logoutController</prop> 
                <prop key="${accessDeniedUrl}">accessdeniedController</prop> 
                <prop key="${sessionExpireUrl}">sessionExceededController</prop> 
                <prop key="${defaultUrl}">generalController</prop> 
            </props> 
        </property> 
    </bean>

Someone please help thanks.

[kiwi]

try to add a OpenSessionInView in inteceptor, and remember to reattach (call updateOrSave() )the object If open a new session for process you request.

the session will close after the request, (the thread it belong to will terminate), so it is important to reattach you object to persistent state.

hope this help.

kiwi
----
happay hacking