Enterprise JavaBeans, Fourth Edition

Chapter 25. Exercises for Chapter 7

Exercise 7.1: Entity Relationships in CMP 2.0, Part 1

This exercise walks you through implementing a complex set of interrelated entity beans defined in Chapter 7 of the EJB book.

Start Up JBoss

If JBoss is not running, start it up. If it’s already running, there’s no reason to restart it.

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 ex07_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\ex07_1> set JAVA_HOME=C:\jdk1.4.2 C:\workbook\ex07_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\ex07_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

This chapter introduces no new features in JBoss-specific files. Please review Exercise 6.1 to understand the JBoss-specific files in this example. Also, this chapter implements nonperformance-tuned entity beans and ...