Book Image

Application Development for IBM WebSphere Process Server 7 and Enterprise Service Bus 7

Book Image

Application Development for IBM WebSphere Process Server 7 and Enterprise Service Bus 7

Overview of this book

By adopting an SOA approach in Business Process Management (BPM), you can make your application flexible, reusable, and adaptable to new developments. The SOA approach also gives you the potential to lower costs (from reuse), and increase revenue (from adaptability and flexibility). However, integrating basic SOA constructs (such as Process, Business Services, and Components) and core building blocks of BPM (such as Process Modeling and Enterprise Service Bus) in a real-world application can be challenging.This book introduces basic concepts of Business Integration, SOA Fundamentals, and SOA Programming Model and implements them in numerous examples. It guides you to building an Order Management application from scratch using the principles of Business Process Management and Service Oriented Architecture and using WebSphere Process Server (WPS) and WebSphere Enterprise Service Bus (WESB). The various detailed aspects, features, and capabilities of the product are conveyed through examplesWe begin with essential concepts on Business Integration, SOA Fundamentals and SOA Programming Model. Then we set up the development environment to build your first Hello Process and Hello Mediation applications.Gradually, we build an SOA-based Order Management Application. We cover important aspects and functions of WPS and WESB with numerous practical examples. We show how to analyze your application's business requirements and check if an SOA approach is appropriate for your project. Then you do a top-down decomposition of your application and identify its use cases, business processes, and services. Having built the SOA Application, we introduce you to various non-functional topics, including: Administration, Governance, Management, Monitoring, and Security. We also discuss deployment topologies for WPS and WESB, performance tuning, and recommended practices.
Table of Contents (20 chapters)
Application Development for IBM WebSphere Process Server 7 and Enterprise Service Bus 7
Credits
About the Authors
About the Reviewers
Preface
WID, WPS, and WESB Tips, Tricks, and Pointers
Index

SOA programming model


There is no single unique and easy way to define or explain SOA. Given a room full of executives, IT Managers, ITArchitects, and developers with each asked to give a one-sentence explanation of what SOA is, for sure each answer will be different. Its very important to understand the fundamental message behind SOA, what it is trying to achieve and what it provides the adopter. Here are some of most common facts you may have heard about SOA:

  • It's a style for building loosely coupled and distributed applications

  • It's all about service providers, providing services to service consumers that conforms to a common interface much like an agreement

  • It provides a programming model based on standards defined by various standards bodies including the Organization for the Advancement of Structured Information Standards (OASIS), WS-* and so on

Note

OASIS is a not-for-profit consortium that drives the development, convergence, and adoption of open standards including WS-BPEL, WS-*, and...