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<target name="ejb-descriptor" depends="setup"> Copies deployment <copy todir="${bld.ejb.dir}/META-INF"> descriptors <fileset dir="${etc.dir}" includes="ejb-jar.xml, persistence.xml"/> </copy> </target> <target name="package-ejb" depends="compile-ejb-classes,ejb-descriptor"> <echo message="-----> Create EJB JAR file"/> <jar jarfile="${bld.ear.dir}/${ejb.name}.jar"> <fileset dir="${bld.ejb.dir}" includes="**"/> </jar> </target> ...

Instantiating or obtaining the object to test Invoking methods upon the test object Using the JUnit assert() methods to determine the test results

The EJB -JAR file must include the interfaces and bean classes. It may also include any helper classes. Optionally the helper classes may be packaged in a separate JAR file in the EAR file. You have two options:

The JAR containing helper classes may be packaged in the lib directory of the EAR file. Using this approach, the packaged classes will be automatically visible to all modules in the EAR module. If you want to limit the visibility to only a specific EJB -JAR or WAR module, you can create an entry in the Manifest.mf file of the module that contains a Class-Path attribute to the JAR file.

The sample test case class in listing 9.6 instantiates TestStateless EJBs and creates two test methods testPositiveResponse() and testNegativeResponse() that test return values from sample business methods on the bean.

Now that you know the structure of EJB -JAR and how to package it, let s look at the elements of ejb-jar.xml.

Within an aspect class, you define interception methods. Two additional actions must be performed. First, you must define pointcuts. Second, you must associate a pointcut to each defined interception method. With JBoss AOP, pointcuts are defined as public static fields of type Pointcut and are annotated with @PointcutDef, and interception methods are annotated with @Bind. The @PointcutDef pointcut takes a string that contains the pointcut expression as a parameter. The @Bind pointcut takes a string that references the field defining the pointcut as a parameter. The aspect class that is shown in Listing 5-10 sums up these notions. Listing 5-10. The JBoss AOP Annotation Style for Defining Pointcuts package aop.jboss; import org.jboss.aop.Aspect; import org.jboss.aop.PointcutDef; import org.jboss.aop.pointcut.Pointcut; @Aspect public class MyJBossAOPAspect { @PointcutDef( "call(* Foo->Bar(..))" ) public static Pointcut pcd; @Bind( pointcut="aop.jboss.MyJBossAOPAspect.pcd" ) public Object myInterceptor( Invocation invocation ) { // ... Before code Object ret = invocation.invokeNext(); // ... After code return ret; } The pcd field defines a pointcut that includes the calls to the Bar method defined in the Foo class. The myInterceptor method is an interception method that is bound to the pcd pointcut.

An EJB deployment descriptor (ejb-jar.xml) describes the contents of an EJB module, any resources used by it, and security transaction settings. The deployment descriptor is written in XML, and because it is external to the Java byte code, it allows you to separate concerns for development and deployment. The deployment descriptor is optional and you could use annotations instead, but we don t advise using annotations in all cases for several reasons. Annotations are great for development, but may not be well suited for deployments where settings may change frequently. During deployment it is common in large companies for different people to be involved for each environment (development, test, production, etc.). For instance, your application requires such resources as DataSource or JMS objects, and the JNDI names for these resources change between these environments. It does not make sense to hard-code these names in the code using annotations. The deployment descriptor allows the deployers to understand the contents and take appropriate action. Keep in mind that even if the deployment descriptor is optional, certain settings such as default interceptors for an EJB -JAR module require a deployment descriptor. An EJB -JAR module may contain

import org.apache.org.*; import junit.framework.*; public class TestStateless extends ServletTestCase{ public TestStateless (String theName){ super( theName ); Initializes the test } class with a name public static Test suite(){ return new TestSuite(TestServlet.class); } public void testPositiveResponse(){ try{ TestStatelessHome home = lookupHome(); TestStateless session = createSession(home);

A deployment descriptor (ejb-jar.xml) A vendor-specific deployment descriptor, which is required to perform certain configuration settings in a particular EJB container