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Introducing EJB modules for building your EJB JAR. You can edit the content of an EJB module using the EJB DD editor or by hand. Once you have an EJB module and have edited it to your liking with the EJB Module DD editor, you can choose the Make or Build command to produce the JAR. JBuilder uses the deployment descriptor to help identify the class files to be packaged. You can have more than one EJB module in a project. All the EJB modules in a single project use the same project classpath and JDK, and they are configured for the same target application server. If you haven t done so already, follow the instructions in the chapter Configuring the target server settings in Developing Applications for J2EE Servers. Creating an EJB module with the EJB Module wizard To create an EJB module, you use JBuilder s EJB Module wizard. Besides creating a new empty EJB module, the EJB Module wizard also gives you the option to copy an existing EJB module to your project instead of creating a new one. You can also use the wizard to create a module node in the project pane that represents an existing module directory outside your project. Or you can use it to create a module node that represents an archive (.jar) outside your project; you can view the archive using the EJB Module DD editor and the EJB designer, but you won t be able to edit it. To begin creating an EJB module, 1 Choose File|New and click Enterprise|EJB to display the EJB page of the object gallery. 2 Double-click the EJB Module icon and the wizard appears: If you don t have an open project before you begin the EJB Module wizard, the Project wizard appears first. After you create a new project, the EJB Module wizard then appears. Also, if you haven t selected a server for your enterprise bean development as explained in the Configuring the target server settings chapter of the Developing Applications for J2EE Servers book, a Select Server Supporting EJB Service page also appears before the EJB Module wizard starts. For help using that page to select a server, click the Help button in the dialog box. 3 Decide whether you are creating an empty EJB module that you will fill in later, if you are copying an existing EJB module from a directory or archive, if you are creating a module node that represents an EJB module in a directory outside your project, or if you are creating a module node that represents an archive (.jar). Because your selection determines the behavior of the wizard, the next sections describe how to use the wizard depending on the task you want to accomplish. 18 Developing Applications with Enterprise JavaBeans
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This entry was posted on Wednesday, September 12th, 2007 at 5:33 am and is filed under JBuilder Blog. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.