Integrating EJB 3.0 into Web Dynpro Using the EJB Model Importer 

This tutorial covers all the steps necessary for using existing business functions from within a Web Dynpro application. The business functions are provided in the form of an Enterprise JavaBean (EJB) application where the business logic is implemented through a stateless session bean. In order to use the existing functions in the Web Dynpro application, we will import a model that facilitates its usage.

In this sample application we implement a simple business logic in an EJB 3.0 session bean, while the user interface is developed using Web Dynpro for Java. The goal of this tutorial is to provide a simple Web Dynpro application which allows you to get a student’s details (such as age, address) upon entering the student’s name.

Objectives

By the end of this tutorial, you will be able to:

• Set up Development Component (DC) based projects in the Developer Studio.
• Prepare Java EE 5 DC projects for use by other components (such as in Web Dynpro).
• Generate a model to be used for linking up the business logic of the EJB DC from within the Web Dynpro DC.
• Create the context in the controllers in such a way so that a connection to the model is defined.
• Define the data binding for the UI elements.
• Add the Java code required when accessing the model in Web Dynpro.

Prerequisites

Systems, installed applications, and authorizations

• You have installed the SAP NetWeaver Developer Studio on your desktop.
• To be able to deploy and run the sample application, the application server must be up and running.

Knowledge

• You are experienced in working with the SAP NetWeaver Developer Studio.
• You have acquired some basic experience with Web Dynpro applications.
• You have basic knowledge of the EJB 3.0 programming model.