Book Image

EJB 3.0 Database Persistence with Oracle Fusion Middleware 11g

By : Deepak Vohra, Deepak Vohra
Book Image

EJB 3.0 Database Persistence with Oracle Fusion Middleware 11g

By: Deepak Vohra, Deepak Vohra

Overview of this book

EJB (Enterprise JavaBeans) 3.0 is a commonly used database persistence technology in Java EE applications. EJB 3.0 has simplified the development of EJBs with an annotations-based API that eliminates the use of remote/local interfaces, home/local home interfaces, and deployment descriptors. A number of other books are available on EJB 3.0, but none covers EJB 3.0 support in Oracle Fusion Middleware 11g, which is one of the leaders in the application server market.This is the first book that covers all aspects of EJB 3.0 database persistence development using Oracle Fusion Middleware technology. It covers all the best practices for database persistence ensuring that your applications are easily maintainable. Leaving theory behind, this book uses real-world examples to guide you in building your own EJB 3.0 applications that are well integrated with commonly used Java EE frameworks.The book gets going by discussing the new features in the EJB 3.0 specification. As some readers may still be using EJB 2.0, the book explains how to convert your EJB 2.0 entity beans to EJB 3.0. It then goes on to discuss using EJB 3.0 database persistence with JDeveloper, WebLogic Server, and Enterprise Pack for Eclipse, the main Java EE components of Oracle Fusion Middleware 11g. The book also covers EJB 3.0 relationships and integrating EJB 3.0 relationships with JSF user interfaces. EJB 3.0 database persistence with some of the commonly used frameworks such as ADF Faces, AJAX, and Web Services is also discussed in the book. It uses the integrated WebLogic Server 11g in some of the chapters and the standalone WebLogic Server in other chapters. While JDeveloper is the primary Java IDE used in the book, one of the chapters is based on the Oracle Enterprise Pack for Eclipse.By the time you reach the end of this book, you will be well-versed with developing EJB 3.0 applications using the different Java EE components of Oracle Fusion Middleware 11g.
Table of Contents (15 chapters)
EJB 3.0 Database Persistence with Oracle Fusion Middleware 11g
Credits
About the Author
About the Reviewers
Preface

Creating a session bean


As mentioned before, one of the best practices when developing entity beans is to wrap them in a session bean for a client. In this section we create a session bean, which will be a wrapper for the entity bean. Select the Model project and select File>New. In the New Gallery window, select Business Tier>EJB and select Session Bean. Click on OK. In the Create Session Bean window, specify an EJB Name. Select the default EJB 3.0 Options: Session Type as Stateless and Transaction Type as Container. The Mapped Name is used in the remote JNDI lookup of the session bean. Click on Next. In the Session Façade window, select the default JPA entity methods to expose. Click on Next. In Class Definitions, specify the Bean Class and click on Next. In EJB Home and Component Interfaces specify, which interfaces to implement and specify the interface names. Click on Next. The Summary page lists the session bean class and interfaces to be generated. Click on Finish. A session...