Chapter 20. Enterprise JavaBeans and WebLogic Server

By Saranathan Govindarajan

IN THIS CHAPTER

• EJB Architecture—Overview

• EJB Container

• EJB Implementation

• EJB Deployment Descriptors

• EJB Deployment

• Other EJB Features

Enterprise JavaBeans is considered to be the cornerstone of the entire J2EE framework. In this chapter, we focus on the basics of Enterprise JavaBeans and also look in detail at the EJB configuration options used in the next three chapters. We start with an architecture overview and move on to different types of available Enterprise JavaBeans. In the following section, we look at the runtime environment (EJB container) along with the basic services it provides—namely, security, persistence, transactions, and so on. In the next three chapters, we'll cover the different bean types in detail. We'll use some real-world examples, such as a classic shopping cart, and airline reservation system to explaining some of the concepts.