Book Image

JBoss AS 5 Development

Book Image

JBoss AS 5 Development

Overview of this book

JBoss AS is the most used Java application server on the market meeting high standards of reliability, efficiency, and robustness and is used to build powerful and secure Java EE applications. It supports the most important areas of Java Enterprise programming including EJB 3.0, dependency injection, web services, the security framework, and more. Getting started with JBoss application server development can be challenging; however, with the right approach and guidance, you can easily master it and this book promises that. Written in an easy-to-read style, this book will take you from the basics of JBoss ASósuch as installing core components and plug-insóto the skills that will make you a JBoss developer to be reckoned with, covering advanced topics such as developing applications with JBoss Messaging service, JBoss web services, clustered applications, and more. You will learn the necessary steps to install a suitable environment for developing enterprise applications on JBoss AS. Then, your journey will continue through the heart of the application server, explaining how to customize each service for optimal usage. You will learn how to design Enterprise applications using Eclipse and JBoss plug-ins. You will then learn how to enable distributed communication using JMS. Storing and retrieving objects will be made easier using Hibernate. The core section of the book will take you into the programming arena with tested, real-world examples. The example programs have been carefully crafted to be easy to understand and useful as starting points for your applications. This book will kick-start your productivity and help you to master JBoss AS development. The author's experience with JBoss enables him to share insights on JBoss AS development, in a clear and friendly way. By the end of the book, you will have the confidence to apply all the newest programming techniques to your JBoss applications.
Table of Contents (20 chapters)
JBoss AS 5 Development
Credits
About the Author
About the Reviewers
Preface
8
Developing Applications with JBoss and Hibernate
Index

Data persistence meets a standard


The arrival of an Enterprise Java Persistence standard, based on a "POJO" development model, fills a substantial gap in the Java EE platform. The previous attempt of EJB 2.x specification missed the mark and created the stereotype of EJB entity beans as awkward to develop and too heavy for many applications. Therefore, it never reached the level of widespread adoption or general approval in many sectors of the industry.

Software developers knew what they wanted, but many could not find it in the existing standards, so they decided to look elsewhere. What they found was proprietary persistence frameworks, both in the commercial and open source domains.

In contrast to EJB 2.x entity beans, the EJB 3.0 Java Persistence API is a metadata-driven POJO technology. That is, to save data held in Java objects into a database, our objects are not required to implement an interface, extend a class, or fit into a framework pattern.

Another key feature of JPA is the query...