Hi All,

Just curious with JBoss Stateless Session Bean. I currently have jboss-4.0.3SP1 running as my application server. Then I try to deploy a simple stateless session bean.

I have 2 interfaces (home and remote) and the bean class as follows

//PlayerHome.java

package jndi.bean;

import java.rmi.RemoteException;

import javax.ejb.CreateException;
import javax.ejb.EJBHome;

public interface PlayerHome extends EJBHome {
 public Player create() throws RemoteException, CreateException;
}

//Player.java
package jndi.bean;

import java.rmi.RemoteException;

import javax.ejb.EJBObject;

public interface Player extends EJBObject {
 public String getPlayerID() throws RemoteException;

 public void setPlayerID(String playerid) throws RemoteException;
}

//PlayerBean.java
package jndi.bean;

import java.rmi.RemoteException;
import java.util.*;

import javax.ejb.EJBException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;

public class PlayerBean implements SessionBean {
 private String playerID;
 private String position;
 private String playerName;
 private int salary;

 Collection objCollection;

 public String getPlayerID()
 {
 return playerID;
 }

 public void setPlayerID(String playeridvalue)
 {
 playerID = playeridvalue;
 }

 public String getPlayerName() {
 return playerName;
 }

 public void setPlayerName(String playerName) {
 this.playerName = playerName;
 }

 public String getPosition() {
 return position;
 }

 public void setPosition(String position) {
 this.position = position;
 }

 public int getSalary() {
 return salary;
 }

 public void setSalary(int salary) {
 this.salary = salary;
 }

 public void setSessionContext(SessionContext arg0) throws EJBException, RemoteException {
 // TODO Auto-generated method stub

 }

 public void ejbCreate() {

 }

 public void ejbRemove(){
 // TODO Auto-generated method stub

 }

 public void ejbActivate() throws EJBException, RemoteException {
 // TODO Auto-generated method stub

 }

 public void ejbPassivate() throws EJBException, RemoteException {
 // TODO Auto-generated method stub

 }
}

and the deployment descriptor

<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar id="ejb-jar_ID" version="2.1"
 xmlns="http://java.sun.com/xml/ns/j2ee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/ejb-jar_2_1.xsd">
 <description>jBoss test application</description>
 <display-name>Player Test</display-name>
 <enterprise-beans>
 <session>
 <ejb-name>PlayerBean</ejb-name>
 <home>jndi.bean.PlayerHome</home>
 <remote>jndi.bean.Player</remote>
 <ejb-class>jndi.bean.PlayerBean</ejb-class>
 <session-type>Stateless</session-type>
 <transaction-type>Bean</transaction-type>
 </session>
 </enterprise-beans>
</ejb-jar>

and all the code deployed successfully.... I try to access that from the client

//PlayerTest.java
import java.util.*;

import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;

import jndi.bean.*;

public class PlayerTest {

 public static void main(String[] args) {

 try
 {
 Properties prop = new Properties();
 prop.setProperty("java.naming.factory.initial",
 "org.jnp.interfaces.NamingContextFactory");
 prop.setProperty("java.naming.provider.url",
 "192.168.100.34:1099");

 InitialContext ctx = new InitialContext(prop);

 Object ref = ctx.lookup("PlayerBean");

 PlayerHome myHome = (PlayerHome) PortableRemoteObject.narrow(ref,PlayerHome.class);

 Player myplayer = (Player) myHome.create();

 myplayer.setPlayerID("J-001");

 System.out.println(myplayer.getPlayerID());
 }
 catch(Exception e)
 {
 e.printStackTrace();
 }

 }
}

it will print :

J-001

as the result.

Then.... I try to call it without set any value ... so I remove the following code from PlayerTest.java

 myplayer.setPlayerID("J-001");

What I expected is a null value. But it comes out "J-001" as the result. Then I try to access from another client.... still got "J-001".

How is it happen ? Is there something wrong about my code ? Why JBoss cache the Stateless while it should be removed after a client instance is remove ?

Regards,

Feris