Borland® JBuilder™ Developer’s Guide

Chapter 24. Message-Driven Beans

IN THIS CHAPTER

• Point-to-Point Versus Publish/Subscribe

• Writing a Message-Driven Bean

• Testing the Message-Driven Bean

• Building a Message-Driven Bean with JBuilder

• Design Guidelines

Message-driven beans, introduced in the EJB 2.0 specification, reduced the complexity of building a message-based application. The beans simply implement an onMessage() that implements the appropriate response to the message received. The container then handles all the required plumbing to implement and wrap Java Message Server (JMS). In other words, message-driven beans simply wrap up JMS functionality into a simple bean component. A message may be initiated from a client application, Web page, or another bean, and the message may also ...