Written by IBM WebSphere experts, this book details how to develop, deploy, and manage enterprise applications for version 5.0 of IBM WebSphere Application Server. Over the course of the book, a large-scale e-commerce application is developed, demonstrating the use of WebSphere Application Developer Studio. The book also addresses other enterprise-level issues such as the functionality of the application server, deployment topology, and server administration. The following excerpt from Chapter 2 focuses on the WebSphere programming model.
We examine many aspects of the WebSphere programming model in this book. However, notwithstanding the breadth of coverage included in this book, the total WebSphere programming model is larger than we can hope to address between a single pair of covers. Fortunately, the majority of the WebSphere programming model is based on open standards, and so, a great deal of what we don't cover here can be learned from other readily available sources - the most important of which is the Java web site at: http://java.sun.com/. Other useful books on the general topic of J2EE programming include:
- Professional Java Server Programming J2EE 1.3 Edition, Wrox Press, ISBN: 1-86100-537-7
- J2EE Design Patterns Applied, Wrox Press, ISBN: 1-86100-528-8
- Expert One-on-One: J2EE Design and Development, Wrox Press, ISBN: 1-86100-784-1
- We begin with a discussion of the basic models of computing supported by the WebSphere programming model.
- We then proceed with a discussion of the classic J2EE roles and some thoughts about additional roles that can contribute to the development and deployment of applications in your enterprise. This will include a discussion on how these roles play into the overall programming model process.
- We follow with an overview and introduction to the additional programming facilities introduced by WebSphere that go beyond the J2EE standard, including the web services programming model.
We will, in this discussion, provide some insight on which APIs are considered strategic, which are supported across all of the WebSphere platforms and editions, and which are restricted. We will introduce the idea of privileged code to gain access to otherwise restricted elements of the programming model. By the time you've finished reading this chapter, you will have a base line on the WebSphere programming model, and be better prepared to understand the programming concepts and details presented through the rest of this book.
Models of E-Business Computing
WebSphere is a J2EE-compliant application server supporting the entire breadth of the J2EE specification. WebSphere version 5.0 is certified at the J2EE 1.3 level, and as such, J2EE is at the heart of the programming model. Given the platform portability premise of Java (and J2EE itself), there is a good chance that you will be able to port your conforming applications to WebSphere with little effort.
