Java™ Application Development on Linux - Dator

23.4 Maintaining a Distributed <strong>Application</strong>517Example 23.7 An Ant target for checking out source from CVSOur example (see the book’s Web site 3 for the full listing) only copiesprebuilt XML files (the deployment descriptors) into place to be included inthe JAR, WAR, and EAR files. For small examples like ours, building the deploymentdescriptors by hand is not a difficult task. But larger, more complexprojects will benefit from further automation. Most J2EE servers come withtools to help build such things. These tools tend to be specific to the particularsof their products. Since the J2EE specification allows for certain vendor variationsand configuration differences, they can be helpful in configuring thingsfor your specific vendor’s version. But being dependent on them for your deploymentis a subtle way to become locked into their product. Another goodchoice—one that avoids this vendor lock-in—is the Open Source tool XDoclet.23.4.2 XDocletXDoclet is an important tool to help with the automation of EJB-related tasks.Working in conjunction with Ant, it uses the Javadoc mechanism of Java to3. http://www.javalinuxbook.com/