Entity Bean serialization fails in cluster

[marius.oancea]

I have a Pojo that is stored into SESSION context when user login (UserDetails).

This Pojo has:

public class UserDetails implements Serializable {

     private User user;
     private Set<Usergroup> groups;
...
}


User and Usergroup are Entity beans and are serializable.

The error i get is:
java.io.NotSerializableException: java.lang.reflect.Method


By using SerializationCheckServletFilter I found out the following:
21:54:13,254 ERROR [SerializationCheckServletFilter] There are problems to
serialize the value bound to the session key : 'currentUser' problem reports
follow:
  Cannot serialize : path : 'currentUser : user : groups : [0] : users : [0] :
groups : [0] : users : [0] : groups : [0] : users : [0] : groups : [0] : users
: [0] : groups : [0] : users : [0] : groups : [0] : users : [0] : groups : [0]
: attributes : [0] : attributetemplate : handler' type : 'interface
javassist.util.proxy.MethodHandler' definedIn : 'class
my.model.Attributetemplate_$$_javassist_133' value :
'org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer@8f2669'

Any Ideea what I can do?

[marius.oancea]

Problem was solved.

currentUser : user : groups[0] : users[0] : ... : attributes [0] : attributetemplate was lazy initialised and since the currentUser(of type UserDetails) was put on session, jboss was trying to serialise without having a hibernate session anymore.


Solution was:

Modify the class to make user and groups transient and serialize only their keys.
============================================================
public class UserDetails implements Serializable {
private Integer userId;
private Set<Integer> groupIds;

private User user;
private Set<Usergroup> groups;
...

public void getUser() {
  if (user == null) { // that means this is user details first accessed after deserialization.
    userService = Component.getInstance("userService");
    user = userService.findUser(userId)
  }

  return userId;
}
}

================================================================

method getUser was modified to search for the user based on userId when it is not already initialised.