J2EE Event Dispatcher Implementing

Introduction     Implementing    Background

• Implementing a J2EE Application

• Inherit from J2eeEventDispatcher

• Set Model Options

This document describes how to implement a J2EE application using Websydian.

Implementing a J2EE Application

A Websydian J2EE application is implemented like any other Websydian application using the EventHandler and PageGenerator patterns. The only difference is that the EventDispatcher must inherit from J2eeEventDispatcher instead of EventDispatcher.

The AllFusion Plex 5.1 is required in order to create J2EE applications, in general we recommend using AllFusion Plex 5.1 when creating Java programs.

Inherit from J2eeEventDispatcher

The EventDispatcher function in a Websydian J2EE application must inherit from the J2eeEventDispatcher function.

Specify the following triples to implement a J2eeEventDispatcher function

The file name of the MyDispatcher function is used when configuring the J2eeProxy servlet as it needs to know the name of the J2eeEventDispatcher that it should call.

In addition to this you must perform the steps as when implementing a standard EventDispatcher function.

Set Model Options

Before generating and building it is important to ensure that the Plex model options are configured correctly.

First open the Model Configuration panel and set the variant of the group models as shown in the table below.

Open the Generate and Build Options panel and set the build configuration as shown in the table below. Please refer to the Plex documentation for more details.

See the manuals of your J2EE server for general information about deploying applications. For information on the Plex EJBs and EJBProxy consult the Plex manual. Information about deployment issues of the Websydian J2eeProxy can be found here.