I'm sorry to insist (I don't like to beg for help), but I really can't
figure out how Orchestra persistence context works with Hibernate, I'm
just getting LazyInitializationException with the message "could not
initialize proxy - no Session".
Since my first e-mail I've implemented my DAO classes extending
HibernateDaoSupport, but that didn't solve the issue.
I think that there is something wrong with the way the application is
layered (because the service/dao layer beans don't belong to any
conversation):
[conversation scope beans] -> [service layer] -> [dao layer] -> [hibernate]
Or the persistence context feature from Orchestra isn't working.
The (hibernate proxied) objects are correctly retrieved in the
dao/service layers, but LazyInitializationException is thrown when
they are accessed from a conversation scope beans.
Well, hope someone can give me a hand.
PS: Again, I'm sorry to insist.
This is the kind of stack trace that I get:
org.hibernate.LazyInitializationException: could not initialize proxy
- no Session
org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:86)
org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:140)
org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:190)
com.test.db.dto.AddressDto_$$_javassist_18.toString(AddressDto_$$_javassist_18.java)
com.sun.facelets.util.DevTools.writeVariables(DevTools.java:168)
com.sun.facelets.util.DevTools.writeVariables(DevTools.java:145)
com.sun.facelets.util.DevTools.debugHtml(DevTools.java:109)
com.sun.facelets.FaceletViewHandler.handleRenderException(FaceletViewHandler.java:671)
com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:639)
org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100)
org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176)
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.ui.SessionFixationProtectionFilter.doFilterHttp(SessionFixationProtectionFilter.java:67)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.ui.ExceptionTranslationFilter.doFilterHttp(ExceptionTranslationFilter.java:101)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.providers.anonymous.AnonymousProcessingFilter.doFilterHttp(AnonymousProcessingFilter.java:105)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.ui.rememberme.RememberMeProcessingFilter.doFilterHttp(RememberMeProcessingFilter.java:116)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.wrapper.SecurityContextHolderAwareRequestFilter.doFilterHttp(SecurityContextHolderAwareRequestFilter.java:91)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.ui.basicauth.BasicProcessingFilter.doFilterHttp(BasicProcessingFilter.java:174)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp(AbstractProcessingFilter.java:277)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.ui.logout.LogoutFilter.doFilterHttp(LogoutFilter.java:89)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:175)
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236)
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
On Sat, Jun 6, 2009 at 12:46 PM, Alejandro
Valdez<[email protected]> wrote:
> Hello list, I'm trying to integrate MyFaces Orchestra with Hibernate
> (and Spring 2.5.6), I have already downloaded the example application
> from http://code.google.com/p/myfaces-orchestra-goodies/ where an
> HibernatePersistentContextFactory is provided, there is also an
> example of a DAO that extends the Spring's HibernateDaoSupport class.
>
> I don't like the idea of implement my DAOs extending a Spring class,
> so instead I wrote them as the example shown below.
>
> It seems that I'm doing something wrong, because I'm having two kind
> of HibernateExceptions at different points of my application, in one
> case it's telling that a collection is used in another session, in the
> other case that a session is closed.
>
> The application is layered in this way: [conversation score beans] ->
> [service layer] -> [dao layer] -> [hibernate]
>
> I can't figure out how HibernatePersistentContextFactory is assigning
> the same session to the different DAOs in the dao layer, I think it
> isn't happening and that is the cause of the exceptions.
>
> Hope someone can point me in the right direction.
>
> Examples:
>
> @Repository("userDAO")
> public class HibernateUserDAO implements UserDAO {
>
> �...@autowired(required=true)
> private SessionFactory sessionFactory;
>
> public HibernateUserDAO() {}
>
> public Session getSession() {
> return sessionFactory.getCurrentSession();
> }
>
> public List<UserDto> getAll() {
> Session session = getSession();
> Query query = session.createQuery("FROM UserDto AS user ORDER
> BY
> user.username ASC");
> return (List<UserDto>) query.list();
> }
>
> // other methods...
> }
>
>
> @Service("userService")
> public class UserServiceImpl implements UserService {
>
> �...@autowired(required=true)
> private UserDAO userDAO;
>
> �...@transactional(readOnly = true)
> public List<UserDto> getAll(){
> return userDAO.getAll();
> }
> // other methods...
> }
>
>
> @Component("userAdministrationBean")
> @Scope("conversation.access")
> @ConversationName("userAdministrationBean")
> public class userAdministrationBean {
>
> UserDto currentUser;
> �...@autowired(required=true)
> private UserService userSvc;
>
> public List<UserDto> getAllUsers() {
> return this.userSvc.getAll();
> }
> // other methods...
> }
>
>
> If you are still reading this, this is the interesting part of the
> Spring application-context.xml:
>
> <tx:annotation-driven/>
>
> <!-- 3. the "entity manager" manager -->
> <bean id="persistentContextConversationInterceptor"
>
> class="org.apache.myfaces.orchestra.conversation.spring.PersistenceContextConversationInterceptor">
> <property name="persistenceContextFactory"
> ref="persistentContextFactory"/>
> </bean>
>
> <!-- 4. conversation - persistence adapter -->
> <bean id="persistentContextFactory"
> class="my.application.db.HibernatePersistenceContextFactory">
> <property name="entityManagerFactory" ref="entityManagerFactory"/>
> </bean>
>
> <bean id="transactionManager"
> class="org.springframework.orm.hibernate3.HibernateTransactionManager">
> <property name="sessionFactory" ref="entityManagerFactory"/>
> </bean>
>
> <bean id="entityManagerFactory"
>
> class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
> <property name="configLocation">
> <value>classpath:hibernate.cfg.xml</value>
> </property>
> </bean>
>
