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| <title>Creating EJB projects</title> |
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| <h1 class="topictitle1">Creating EJB projects</h1> |
| <div><p>An EJB project is used to organize the resources contained in an |
| EJB module.</p> |
| <div class="section"><p>An EJB module is used to assemble one or more enterprise beans |
| into a single deployable unit. It is deployed in a standard Java� archive |
| (JAR) file. An EJB module can be used as a standalone application, or it can |
| be combined with other modules to create a J2EE enterprise application. An |
| EJB module is installed and run in an enterprise bean container. An EJB project |
| must be referenced by an enterprise application project (defined as a module |
| in an EAR) in order to be deployed successfully and run on a server.</p> |
| <p>An |
| EJB module contains the following:</p> |
| <ul><li>One or more deployable enterprise beans.</li> |
| <li>A deployment descriptor, stored in an Extensible Markup Language (XML) |
| file. This file declares the contents of the module, defines the structure |
| and external dependencies of the beans in the module, and describes how the |
| enterprise beans are to be used at run time.</li> |
| </ul> |
| <p>To create a new EJB project:</p> |
| </div> |
| <ol><li class="stepexpand"><span>In the J2EE perspective, select <span class="menucascade"><span class="uicontrol">File</span> > <span class="uicontrol">New</span> > <span class="uicontrol">Other</span> > <span class="uicontrol">EJB</span> > <span class="uicontrol">EJB Project</span></span>. The New EJB Project wizard |
| opens.</span></li> |
| <li class="stepexpand"><span>In the <span class="uicontrol">Name</span> field, type a name for the EJB |
| project. To change the default <span class="uicontrol">Project location</span>, click |
| the <span class="uicontrol">Browse</span> button to select a new location.</span> <p>If |
| you specify a non-default project location that is already being used by another |
| project, the project creation will fail.</p> |
| </li> |
| <li class="stepexpand"><span>Click <span class="uicontrol">Show Advanced</span>.</span></li> |
| <li class="stepexpand"><span>In the <span class="uicontrol">Target runtime</span> drop-down list, select |
| the application server that you want to target for your development. This |
| selection affects the compilation and runtime settings by modifying the class |
| path entries for the project.</span></li> |
| <li class="stepexpand"><span>In the <span class="uicontrol">EJB version</span> drop-down list, select |
| the EJB specification version to which you want your EJB project to adhere.</span> <div class="note"><span class="notetitle">Note: </span>If you plan on using EJB 2.1 enterprise beans, you must specify |
| an EJB 2.1 project. You can add EJB 1.1 enterprise beans to EJB 2.x projects. |
| An EJB 2.1 project must exist in a J2EE 1.4 enterprise application project. |
| An EJB 2.0 project requires a minimum level of J2EE 1.3 for its enterprise |
| application project.</div> |
| </li> |
| <li class="stepexpand"><strong>Optional: </strong><span>Select the <span class="uicontrol">Add module to an EAR |
| application</span> check box to add the new module to an enterprise application |
| (EAR) project.</span> Type a new project name or select an existing enterprise |
| application project from the drop-down list in the <span class="uicontrol">EAR application</span> combination |
| box. Or, click the <span class="uicontrol">New</span> button to launch the New Enterprise |
| Application Project wizard.<div class="note"><span class="notetitle">Note:</span> If you type a new EAR project name, the EAR |
| project will be created in the default location with the lowest compatible |
| J2EE version based on the version of the project being created. If you want |
| to specify a different version or a different location for the enterprise |
| application, you must use the New Enterprise Application Project wizard.</div> |
| </li> |
| <li class="stepexpand"><strong>Optional: </strong><span>Select the <span class="uicontrol">Create an EJB Client |
| JAR Project to hold the client interfaces and classes</span> check box |
| if you want the client interface classes for your enterprise beans to be kept |
| in a separate EJB client JAR file. This EJB client JAR file will be added |
| to the enterprise application as a project utility JAR file. </span></li> |
| <li class="stepexpand"><strong>Optional: </strong><span>Select the <span class="uicontrol">Add support for annotated |
| Java classes</span> check box if you want the generated classes to use |
| XDoclet annotations.</span></li> |
| <li class="stepexpand"><strong>Optional: </strong><span>Select the <span class="uicontrol">Support Multiple Modules |
| per project</span> check box to enable the selected project to contain |
| multiple modules of the same type. Select the project which will |
| support multiple modules from the drop-down list.</span></li> |
| <li class="stepexpand"><strong>Optional: </strong><span>If you are creating an EJB Client JAR project, click <span class="uicontrol">Next</span> to |
| specify the client JAR project options. Otherwise, click <span class="uicontrol">Finish</span>.</span></li> |
| </ol> |
| </div> |
| <p> |
| (C) Copyright IBM Corporation 2000, 2005. All Rights Reserved. |
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