Enterprise JavaBeans, Fourth Edition

Chapter 24. Exercises for Chapter 6

Exercise 6.1: Basic Persistence in CMP 2.0

This exercise begins walking you through the intricacies of CMP 2.0. In this chapter, you will learn more detailed JBoss CMP 2.0 configuration mechanisms by creating the Customer EJB described in the EJB book.

Start Up JBoss

If you already have JBoss running, there is no reason to restart it. Otherwise, start it up as instructed in the JBoss Installation and Configuration chapter.

Initialize the Database

The database table for this exercise will automatically be created in JBoss’s default database, HypersonicSQL, when the EJB JAR is deployed.

Build and Deploy the Example Programs

Perform the following steps:

1. Open a command prompt or shell terminal and change to the ex06_1 directory created by the extraction process

2. Set the JAVA_HOME and JBOSS_HOME environment variables to point to where your JDK and JBoss 4.0 are installed. Examples:

   Windows: C:\workbook\ex06_1> set JAVA_HOME=C:\jdk1.4.2 C:\workbook\ex06_1> set JBOSS_HOME=C:\jboss-4.0

   Unix: $ export JAVA_HOME=/usr/local/jdk1.4.2 $ export JBOSS_HOME=/usr/local/jboss-4.0

3. Add ant to your execution path.

   Windows: C:\workbook\ex06_1> set PATH=..\ant\bin;%PATH%

   Unix: $ export PATH=../ant/bin:$PATH

4. Perform the build by typing ant.

As in the last exercise, you will see titan.jar rebuilt, copied to the JBoss deploy directory, and redeployed by the application server.

Examine the JBoss-Specific Files

In this section, we introduce a new JBoss CMP 2.0 deployment descriptor ...