Question regarding @StatefulTimeout annotation on stateful session beans

[Ajay Dhar]

I just started going through Ivan's notes. I'm on chapter 2, Create a Stateful Session Bean. I coded the first example from this chapter in Eclipse using Glassfish.

The code example works for the most part, however I do not see the @StatefulTimeout(value=10, unit=TimeUnit.SECONDS) taking effect. Whenever I call the EJB from the servlet client multiple times within 10 seconds it displays the greeting properly, as expected. However, if I wait more than 10 seconds between requests, the session bean should timeout and I should get a NoSuchEJBException upon a subsequent request. However, I am not getting any error, a greeting is be sent back to the client. I even tried reducing the timeout to 1 second but to no avail. Also, I added @PrePassivate and @PostActivate methods to see if the @StatefulTimeout was causing the bean to passivate, but those callback methods weren't being called.

I have provided the code snippets of the stateful session bean and servlet client below. Does someone know what is going on? The @StatefulTimeout annotation doesn't seem to be taking effect. I'm a little confused.

Any help is appreciated.

Stateful Session Bean:

package com.ivan.scbcd6;

import java.util.Date;
import java.util.concurrent.TimeUnit;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.ejb.LocalBean;
import javax.ejb.PostActivate;
import javax.ejb.PrePassivate;
import javax.ejb.Remove;
import javax.ejb.StatefulTimeout;
import javax.ejb.Stateless;
import javax.ejb.TransactionAttribute;
import javax.ejb.TransactionAttributeType;

/**
 * Session Bean implementation class StatefulSession1Bean
 */
@Stateless
@LocalBean
@StatefulTimeout(value=5, unit=TimeUnit.SECONDS)
@TransactionAttribute(TransactionAttributeType.NEVER)
public class StatefulSession1Bean {
	
	private static int sCurrentInstanceNumber = 1;
	private int mInstanceNumber;
	
	// default constructor
    public StatefulSession1Bean() { }

    @PostConstruct
    public void initialize() {
    	mInstanceNumber = sCurrentInstanceNumber++;
    	System.out.println("*** StatefulSession1Bean " + mInstanceNumber + " created.");
    }
    
    @PreDestroy
    public void destroy() {
    	System.out.println("*** StatefulSession1Bean " + mInstanceNumber + " destroyed.");
    }
    
    @PrePassivate
    public void prepassivate() {
    	System.out.println("*** StatefulSession1Bean " + mInstanceNumber + " passivated.");
    }
    
    @PostActivate
    public void postactivate() {
    	System.out.println("*** StatefulSession1Bean " + mInstanceNumber + " activated.");
    }
    
    @Remove
    public void remove() {
    	System.out.println("*** StatefulSession1Bean " + mInstanceNumber + " remove.");
    }
    
    /**
     * Creates a greeting to the person with the supplied name.
     * 
     * @param inName - Name of person to greet.
     * @return greeting.
     */
    public String greeting(final String inName) {
    	Date currentTime = new Date();
    	
    	String message = "Hello " + inName + ", I am stateful session bean " + mInstanceNumber + 
    			". The time is now: " + currentTime;
    	return message;
    }
}

Servlet client:

package com.ivan.scbcd6.client;

import java.io.IOException;
import java.io.PrintWriter;

import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.ivan.scbcd6.StatefulSession1Bean;

/**
 * Servlet implementation class StatefulSession1Servlet
 */
@WebServlet(name = "StatefulSession1Servlet", urlPatterns = "/test.do")
public class StatefulSession1Servlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
    
	@EJB
	private StatefulSession1Bean mStatefulSessionBean;
	
	// default constructor
    public StatefulSession1Servlet() {
        super();
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		PrintWriter out = response.getWriter();
		
		String name = request.getParameter("name");
		if (name == null) {
			name = "Anonymous Coward";
		}
		
		String greeting = mStatefulSessionBean.greeting(name);
		out.println("Response from EJB: " + greeting);
	}
}

[Ajay Dhar]

Jeez... 5 minutes after making this post I realized that my session bean is annotated as @Stateless instead of @Stateful... Lol. I'll try it again as a Stateful bean. I'll post again if I run into any issues.