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Creating Stateful Session Beans

Alvin Reyes

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Agenda

Install Pre-requisite Softwares and DB

Connection

Develop a simple Stateful Session Bean Call

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Pre-requisites

Eclipse IDE (Bundled with JBoss 6)

Jboss Server

(http://sourceforge.net/projects/jboss/files/JBoss/JBoss-6.0.0.Final/)

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Eclipse IDE

http://www.eclipse.org/

http://www.jboss.org/tools/download/

Eclipse IDE Download

Jboss Eclipse Plugin

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JBoss Server

Download the Application Server:

http://sourceforge.net/projects/jboss/files/JBo

s/JBoss-6.0.0.Final/

Default Username: admin

Default Password: admin

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JBoss Server Installation

Install Jboss Server on your Eclipse IDE.

Step 1: Go to New > Server > Server

Step 2: Choose Jboss AS 6.0

Step 3: Define the Location of the Jboss AS

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JBoss Server

Define the Home directory

of JBoss AS and click Finish.

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Project Overview

For this session:

Well create a simple Stateful Session Bean.

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Create Enterprise Java Bean Project

Note: You can skip the Project creation if you already have an existing EJB

project.

1. Go to > New > EJB > EJB Project2. Name: ejbsampleproject_

3. Target: JBoss 6.

4. Create EAR Project

5. Create Client Project

6. Click Next to Finish

We will now create the EJB that will serve as the consumer of the requests

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EJB Project Stateless Session Bean

Generated:

EJB Project

Client Project

EAR

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Create new Session BeanJava Package: com.gradu.ejb.samplebeans

Class name: SampleStatefulBean

State Type: Stateful

Create Remote and Local Interfaces

EJB Project: Develop the Bean

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Create new Session Bean

Click Finish

EJB Project: Develop the Bean

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Create new Session Bean

The Wizard Generated the following:

1. Session Bean named SampleStatefulBean

2. Remote Interface named SampleStatefulBeanRemote

3. Local Interface name SampleStatefulBeanLocal

EJB Project: Develop the Bean

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Create new Session Bean

Generated Session Bean:

EJB Project: Develop the Bean

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Create new Session Bean

Add a mappedName attribute to the bean. This will serve as the JNDI name of the Bean.

EJB Project: Develop the Bean

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Modify Local and Remote Interface

Edit the Local and Remote Interface to implement the method.

EJB Project: Develop the Bean

Note: Remote and Local Interface served as the clients reference of the bean.

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Implement Interface MethodsWe need to implement the methods we just added and try returning a String value

and add a new Setter to test that our Bean.

EJB Project: Develop the Bean

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Create a new Client Class

Create a new class on the client project. This

client will be the one calling our Session Bean

from the Application Server.

EJB Project: Develop the Client

Java Package: com.gradu.ejb.client

Class name: SampleClient

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Modify the Client Class to Call our Bean

Create a new class on the client project. This client will be the one calling our

Session Bean from the Application Server.

EJB Project: Develop the Client

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Deploy the Session Bean

We need to deploy the session bean first before executing the Sample Client.

EJB Project: Develop the Client

Run the EAR file on the server to deploy the EJB Components.

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Verify Deployment from Console

After running the EAR file (deployment), we need to verify if the Application Server

Indeed deployed our beans.

EJB Project: Develop the Client

If the above lines are shown on the Console, then the Session Bean was successfully

deployed.

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Test the Session Bean using the Client ClassRun the Client Class.

EJB Project: Testing the Bean

If you were able to see the value thrown from the Session Bean, that means you

have successfully called the Bean from the Application Server.