Summarize the complete J2EE Applications

What this episode covers

1- Web Services Based Application (Web Services-Struts-JSP) You can create a business service data model from existing Web Service in a public UDDI by creating a pointer to the WSDL. Using the Generate Web Service Stub/Skeleton option, classes are automatically generated based on the WSDL. Next, you can create a Struts page flow diagram that gets the parameter, then an action to invoke the Web Service and another JSP page to show the results. You can edit the code with the Property Inspector or in the Source view. Lastly, run the completed application on the embedded J2EE container. 2- EJB Based Application (EJB-Struts-JSP) The steps in EJB based applications development are modeling the Entity EJB, creating session fasade, generate DTO, and build JSP application. Start with creating the EJB diagram by drag-and-dropping of tables from the database. Then, create a Session Bean that will act as a session façade to the Entity Beans. Next, generate Data Transfer Objects the Entity Beans. Create a JSP page to access the EJB. In the JSP visual editor, you can drag-and-drop the session EJB from the Data Control Palette to build a UI on top of it. Last action, run the EJB and JSP on the embedded J2EE container. 3- Oracle ADF Business Components Based Application - View Layer (UIX) The steps in developing UIX interfaces are drag-and-drop binding, adding Rich HTML components, and Plug-and-Play look and feel. You can add a master detail relationship to a UIX page using the built-in many to many display object. There is range paging and order by functionality by clicking on the column header. You can change the look and feel from blaf to minimal on the xml page. 4- Oracle ADF Business Components Based Application - View/Controller Layer (Struts-JSP) The developer can build a JSP application to access a data model. Create a Struts Page Flow of the application. You can create a browse page in which you have read-only forms and navigation buttons. You can create an edit page that allows the user to change information; operations are commit, rollback, and release. 5- Oracle ADF Business Components Based Application - Business Services Layer The Business Services Layer: Modeling Business Components, adding validation rules, adding formatting rules, and testing with a Swing Based Tester. UML modeler defines the Business Service layer and can used with existing tables to complete the Business Components. You can edit the Entity attributes which includes rule validation and generate a Data Control for the Model layer. Test using a simple Swing based tester. 6- A Struts/JSP Application Create a Struts Page Flow adding Data Action, Pages and Forward actions from the Component Palette. Add Struts and HTML components to the page. Edit properties using the Property Inspector. Next, create Struts Form Bean to pass parameters to the Struts action. Connect the Struts Action to the Struts Form Bean and write code to implement the Struts Action. Run the application with the embedded J2EE container.

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