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Now that you have some best practices in place, what do you do when that s still not enough We ll let you in on a few secrets from the trenches that will make solving those packaging problems easier.

9.4 Creating a stateless session bean unit test 9.5 Creating a stateful session bean unit test 9.6 Creating an entity bean unit test 9.8 Executing test cases using a UI

In order to minimize the XML configuration code, Spring provides some auto-wiring capabilities. Auto-wiring consists of enabling the container (factory) to resolve the dependencies automatically by using some pragmatic strategies. Even though this is not encouraged (welldefined dependencies are preferred), this feature is worth mentioning since it illustrates the real benefits and possibilities of factories and, consequently, of the IoC concept advocated by Spring. The auto-wiring mode of a bean can be configured by using the autowire attribute of the bean element. It can take the following values: no: No auto-wiring at all. byname: The references are automatically added by matching the names of the properties and the names of the beans. byType: The references are automatically added by matching the types of the properties and the types of the beans. constructor: The references are automatically added by matching the types of the properties and the types of the bean constructor arguments. autodetect: Chooses constructor or byType through introspection of the bean class.

This section examines some common deployment problems that you may run into. Most can be addressed by properly assembling your application.

a missing library at the correct loader level; you know, the JAR file containing the class that can t be found. If you re loading a resource or property file in your application, make sure that you use Thread.currentThread().getContextClassLoader().getResourceAsStream().

After creating a multitude of Cactus tests, and setting up Ant to execute your tests, you may find yourself wanting a few other methods of executing your tests. For instance, you may have set up Ant to run all your tests, or a few specific tests, but you also want the ability to execute only a single test when needed. Basically, your Ant build.xml file is a static resource that describes which test cases to run, and you want the ability to run single tests at a moment s notice.

Table 2.1 Major metadata annotations introduced in Java EE. Although primarily geared toward EJB, these annotations apply to Java EE components such as servlets and JSF managed beans as well as application clients. Annotations defined in the javax.annotation.* package are defined by the Common Metadata Annotations API (JSR-250). Annotations javax.annotation.Resource Usage Dependency injection of resources such as DataSource, JMS objects, etc. Dependency injection of session beans Dependency injection of web services Dependency injection of container-managed EntityManager Dependency injection of EntityManagerFactory Lifecycle method Lifecycle method Security Security Components That Can Use Them EJB, web, application client

Spring provides many other configuration features, such as object life-cycle management, which specifies some bean destruction methods, as well as other features designed for beans to be aware of the container. The reader interested in further details on this subject should refer to literature that is specific to Spring, since it is not the goal of this book to enter into the nonAOP details of Spring.

javax.annotation.PostConstruct javax.annotation.PreDestroy javax.annotation.security.RunAs javax.annotation.security. RolesAllowed javax.annotation.security.PermitAll javax.annotation.security.DenyAll javax.annotation.security. DeclareRoles

Your Cactus tests can be run from a web browser, from Apache Ant, or by Cactus UI classes included in the Cactus distribution. This recipe illustrates executing test cases from a web browser and the Cactus UI classes. Executing unit tests from a web browser To execute a unit test from a web browser, contact the Cactus servlet (the test redirector) with a specific URL. Create the URL directly to the Cactus servlet, and pass the test name as a parameter. For example, to execute a test case encapsulated by the class examples.cactus.Test1, use the following URL (your URL might differ by hostname, port, and servlet location):