EJB 3.0 application packaging
Session beans and MDBs can be packaged in a Java standard JAR file. This can be achieved by two strategies:
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| Using a Java project or Java Utility project |
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| Using an EJB project |
If you use the first approach, you have to add the Java Project to the EAR project, by editing the deployment descriptor (application.xml), and adding the lines:
<module>
<ejb>MyEJB3Module.jar</ejb>
</module>
When using the second approach, the IDE can automatically update the application.xml file, and set up an ejb-jar.xml inside the EJB project. However, in EJB 3.0, you are not required to define the EJBs and related resources in an ejb-jar.xml file, because they are usually defined through the use of annotations. The main usage of deployment descriptor files is to override or complete behavior specified by annotations.
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ibm.com/redbooks |