Hello everyone!

The session expired problem really drives me mad, because it's been couple of 
months or so since it started bothering me. Please advice me on what to do, 
because I'm despaired. Wicket tries to serialize every single class in my 
opinion.

I enabled the DEBUG of Wicket and messages like the following one are flooding 
the log. Here it is:

08-03-2010 17:30:03,445 ERROR 
org.apache.wicket.util.lang.Objects.objectToByteArray:1134 - Error serializing 
object class com.mycompany.myapp.ui.users.Users [object=[Page class = 
com.mycompany.myapp.ui.users.Users, id = 21, version = 0]]
   
org.apache.wicket.util.io.SerializableChecker$WicketNotSerializableException: 
Unable to serialize class: 
org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$ManagedEntityManagerFactoryInvocationHandler
Field hierarchy is:
  21 [class=com.mycompany.myapp.ui.users.Users, path=21]
    private java.lang.Object org.apache.wicket.MarkupContainer.children 
[class=[Ljava.lang.Object;]
      protected java.lang.Object com.mycompany.myapp.ui.MyFormPanel.model[15] 
[class=org.apache.wicket.markup.html.WebMarkupContainer, path=21:holder]
        private java.lang.Object org.apache.wicket.MarkupContainer.children 
[class=[Ljava.lang.Object;]
          private java.lang.Object 
org.apache.wicket.MarkupContainer.children[0] 
[class=com.mycompany.myapp.ui.users.Users$2, path=21:holder:view]
            private java.lang.Object org.apache.wicket.MarkupContainer.children 
[class=[Ljava.lang.Object;]
              private java.lang.Object 
org.apache.wicket.MarkupContainer.children[0] 
[class=org.apache.wicket.markup.repeater.Item, path=21:holder:view:1]
                private java.lang.Object 
org.apache.wicket.MarkupContainer.children 
[class=org.apache.wicket.markup.repeater.RepeatingView, 
path=21:holder:view:1:cols]
                  private java.lang.Object 
org.apache.wicket.MarkupContainer.children 
[class=org.apache.wicket.markup.repeater.Item, path=21:holder:view:1:cols:2]
                    java.lang.Object org.apache.wicket.Component.data 
[class=com.mycompany.myapp.ui.users.SortedUsersProvider$1]
                      final com.mycompany.myapp.ui.users.SortedUsersProvider 
com.mycompany.myapp.ui.users.SortedUsersProvider$1.this$0 
[class=com.mycompany.myapp.ui.users.SortedUsersProvider]
                        private com.mycompany.myapp.session.UserContext 
com.mycompany.myapp.ui.users.SortedUsersProvider.context 
[class=com.mycompany.myapp.session.UserContext]
                          private com.mycompany.myapp.ui.util.Utilities 
com.mycompany.myapp.session.UserContext.utilities 
[class=com.mycompany.myapp.ui.util.Utilities]
                            private com.mycompany.myapp.admin.ManagementBean 
com.mycompany.myapp.ui.util.Utilities.domainAndUsersManagement 
[class=com.mycompany.myapp.admin.ManagementBean$$EnhancerByCGLIB$$b016b4a]
                              private net.sf.cglib.proxy.MethodInterceptor 
com.mycompany.myapp.admin.ManagementBean$$EnhancerByCGLIB$$b016b4a.CGLIB$CALLBACK_0
 
[class=org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor]
                                private 
org.springframework.aop.framework.AdvisedSupport 
org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.advised
 [class=org.springframework.aop.framework.ProxyFactory]
                                  private org.springframework.aop.Advisor[] 
org.springframework.aop.framework.AdvisedSupport.advisorArray 
[class=[Lorg.springframework.aop.Advisor;]
                                    private org.springframework.aop.Advisor[] 
org.springframework.aop.framework.AdvisedSupport.advisorArray[0] 
[class=org.springframework.transaction.interceptor.BeanFactoryTransactionAttributeSourceAdvisor]
                                      private org.aopalliance.aop.Advice 
org.springframework.aop.support.AbstractBeanFactoryPointcutAdvisor.advice 
[class=org.springframework.transaction.interceptor.TransactionInterceptor]
                                        private org.aopalliance.aop.Advice 
org.springframework.aop.support.AbstractBeanFactoryPointcutAdvisor.advice[write:1]
 [class=org.springframework.orm.jpa.JpaTransactionManager]
                                          private 
javax.persistence.EntityManagerFactory 
org.springframework.orm.jpa.JpaTransactionManager.entityManagerFactory 
[class=$Proxy29]
                                            protected 
java.lang.reflect.InvocationHandler java.lang.reflect.Proxy.h 
[class=org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$ManagedEntityManagerFactoryInvocationHandler]
 <----- field that is not serializable

Thank you in advance!

Regards,
Martin

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