Chapter 6 of the EJB book walked you through some basic object-to-relational mappings for the persistent properties of your entity bean classes. The exercises in this chapter use a lot of the example code from Chapter 6 to illustrate basic mapping types. You will see examples of:
Autogenerated primary keys
@EmbeddedId primary key class mappings
@Temporal, @Transient, @Lob , and
An entity class that maps to multiple tables
An entity class that has an embedded class as a property
This exercise shows you an example of the
@Temporal, @Lob, and
@Enumerated mapping types discussed in Chapter 6, as well as an example of
an autogenerated primary key.
If you already have JBoss running, there is no reason to restart it. Otherwise, start it up as instructed in Workbook 1.
The database tables will be created when Exercise 6.1 is deployed to JBoss. If you have problems running this example, shut down JBoss and run the clean.db Ant task.
Perform the following steps:
Open a command prompt or shell terminal and change to the ex06_1 directory created by the extraction process.
variables to point to where your JDK and JBoss 4.0 are
C:\workbook\ex06_1> set JAVA_HOME=C:\jdk1.5.0 C:\workbook\ex06_1> set JBOSS_HOME=C:\jboss-4.0.x
$ export JAVA_HOME=/usr/local/jdk1.5.0 ...