Serialize java.security.Principal

Question

The problem is:
I'am using IBM WebSphere Portal 5.1
I can get current user
request.getUser();So I get instance of such class:
package com.ibm.wps.puma;
public class User extends com.ibm.wps.puma.Principal
    implements Serializable, Principal, org.apache.jetspeed.portlet.User, com.ibm.portal.puma.User{
}As you can see, I can access this object through interface java.security.Principal
Also, this object can be serialized. That's great.
I have a web-service.
It needs java.security.Principal from User
So I've tried to add parameter com.ibm.wps.puma.User to the method of web-service interface.
I thought I can send class via SOAP to web-service and then access it through java.security.Principal on the server-side of web-service.
User is stored in bean:
public class WSPrincipalBean {
    private String userName;
    private String password;
    private User user;
public WSPrincipalBean(){
public Principal getPrincipal() {
        return (Principal)user;
     public void setUser(User user) {
          this.user = user;
}When I generate web-service I get several warnings: some fields of User user cna't be serialized. But I don't need actually this fields.
When I generate client based on my web-service wsdl I loose field User user.
Web-service and web-service clint use JAX-RPC 1.0 / 1.1 and WebSphere Application Server 5.1
Please, can you suggest me any solution?
Is there any way to make full serialization of java.security.Principal?

Answer 1

Rachman wrote:
What is serializable..?
How to use Serializable..?
I'm not understanding about this.. please help me...
Thanks for all...See simple example:
[http://www.idevelopment.info/data/Programming/java/serialization/SimpleSerialization.java|http://www.idevelopment.info/data/Programming/java/serialization/SimpleSerialization.java]
Read Sun FAQ
[http://java.sun.com/javase/technologies/core/basic/serializationFAQ.jsp|http://java.sun.com/javase/technologies/core/basic/serializationFAQ.jsp]
In common serialization allows you to store instances of classes (I mean any objects) in files.
Then you can restore them and use in your program.
You can specify fields which will be stored in file +(serialization)+ and which you don't want to store. So, after restoring +(deserialization)+ such fields will get default values.
You need serialization when you are developing some network application. I am developing interaction between portlet app and web-service.
I need serialize some objects to transfer them to web-service. I just transfer some kind of text +(xml data)+ to web-service. Web-service accepts xml-data, read it, deserialize it and get objects.
So you don't pay attention to network stuff. You have to pay attention to serialization of your objects. If object you want to send to web-service doesn'r have proper serialization it can be corrupted and you can loss data.
Of course there are plenty other situations when you need serialization.