Server Component Patterns
Component technologies like Enterprise JavaBeans, COM+ and, in the near future, CORBA Components have become mainstream in many application domains. Many developers and architects use this technology in their everyday work. However, there is more to know about component infrastructures than the API's of the respective technology, and this book shows what.
The first part of the book introduces a pattern language that describes how server-side component infrastructures work internally. It does not only adress the basic building blocks and their interactions. It also provides details about the reasons and rationales for this kind of system architecture. For each pattern, the book provides short examples of how it is implemented in EJB, CCM and COM+. These examples thus also serve as a good comparison of those three mainstream component infrastructures.
The second part of the book uses the EJB technology to provide even more detailed examples for the patterns, including UML diagrams and extensive source code. The chapter also serves as a comprehensive overview of EJB, introducing the EJB from the architecture viewpoint, and not just on the API level.The focus is on highlighting the consequences of the EJB architecture for the developer.
Part three offers another approach to the material: a conversation between two people that describes how a concrete application has been built using component technology, focusing on the benefits of this approach.
After reading this book you will
- understand the principles and patterns of server-side component infrastructures
- be able to design your own proprietary component infrastructures for specific projects
- learn about the commonalities and differences between EJB, CCM and COM+
- gain a comprehensive overview over the EJB technology
- see how server-side component infrastructures can be used to great benefit in a real application
Wiley & Sons