EJB 3.0 Database Persistence with Oracle Fusion Middleware 11g

Deepak Vohra

• Publisher: Packt Publishing
• Year: 2010
• Edition: 1
• eBook ISBN:
  9781849681568
• Topic: Computer Science
• Subtopic: Programming Languages
• Index: Computer Science

In Detail

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.

A practical guide illustrated with examples for developing EJB 3.0 applications integrated with commonly used Java EE frameworks such as JSF, Web Services, Ajax, and ADF Faces

Approach

This is a practical, tutorial-style book that includes many examples that demonstrate how to develop EJB 3.0 database persistence applications with Oracle Fusion Middleware 11g. Every chapter starts with setting the environment for the chapter and includes an example application illustrated with figures at milestone stages.

Who this book is for

This book is aimed at EJB 3.0 application developers who want to learn about the practical use of EJB 3.0 database persistence with Oracle Fusion Middleware. Those who are already using EJB 3.0 database persistence will learn about using EJB 3.0 database persistence with Oracle Fusion Middleware 11g. The target audience is expected to have some prior knowledge about Java EE, EJBs, EJB 3.0, JSF, AJAX, web services, and XML. This book is ideal for those developers who have working knowledge of JDeveloper and WebLogic server, and wish to learn about the practical use of EJB 3.0 with Oracle Fusion Middleware.

EJB 3.0 Database Persistence with Oracle Fusion Middleware 11g

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Table of Contents

EJB 3.0 Database Persistence with Oracle Fusion Middleware 11g

Credits

About the Author

About the Reviewers

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Errata

Piracy

Questions

1. What's New in EJB 3.0

Metadata annotations

Configuration defaults

Environmental dependencies and JNDI Access

Simplified Session Beans

Simplified entity beans

Java Persistence API

Interceptors

Simplified checked exceptions

Callback Interfaces

Summary

2. Converting an EJB 2.0 Entity to an EJB 3.0 Entity

Setting the environment

Adding an Application

Creating an XML deployment descriptor

Creating stylesheets

Converting the entity class

The EJB 2.0 entity

The XSLT stylesheet

Generating the EJB 3.0 entity

Developing a session façade for an entity

The XSLT stylesheet

Generating the session Façade

Summary

3. EclipseLink JPA Persistence Provider

Specifying the EclipseLink persistence provider

The JPA framework

Advantages of JPA

What is required for JPA?

Types of entity managers

Container-managed entity manager

Application-managed entity manager

EclipseLink JPA

Metadata annotations

XML mapping metadata

Entity identity

Entity relationships

EclispeLink JPA Persistence unit properties

Summary

4. Building an EJB 3.0 Persistence Model with Oracle JDeveloper

Setting the environment

Creating a datasource in JDeveloper

Creating an EJB 3 application

Creating an EJB 3 entity bean

Mapping an Oracle database table to an entity bean

The entity bean class

Creating a session bean

The session bean class

Creating and testing a test client

Creating a client

Testing the client

Summary

5. EJB 3.0 Persistence with Oracle Enterprise Pack for Eclipse

Setting the environment

Installing required products

Creating a MySQL database table

Configuring WebLogic Server with MySQL database

Creating a data source

Deploying the data source

Testing the data source

Creating a JPA project in Eclipse

Creating an EJB 3.0 entity bean

The EJB 3.0 entity class

Creating a Persistence Configuration file

Creating a session bean

The session bean class

Creating a test client

Deploying the entity in WebLogic Server

Testing the EJB 3.0 entity client

Summary

6. EJB 3.0 with ADF Faces UI

Setting the environment

Creating a datasource in JDeveloper

Creating an EJB 3 application

Creating an EJB 3 entity bean from Oracle database

The Entity class

The persistence configuration file

Creating a session bean

The session bean class

Creating an Oracle ADF Faces client user interface

Creating a JSF page

Adding ADF Faces components

The index JSF page

The JSF page to create an Entity

The JSF page to find an Entity

The catalog entry JSF page

The managed bean

The JSF configuration file

The web application configuration file

Testing the Oracle ADF Faces user interface

Creating an Entity instance

Finding an Entity instance

Summary

7. Creating EJB 3.0 Entity Relationships

EJB 3.0 entity relationship annotations

Setting the environment

Creating database tables

Creating an EJB project

Creating the entity beans

The Entity classes

The Catalog entity class

The Edition entity class

The Section entity class

The Article entity class

Creating a session bean

The Session Bean class

Creating the client

Testing the client

Modifying the fetch strategy

Summary

8. EJB 3.0 Database Persistence with Ajax in the UI

The XMLHttpRequest Object

Setting the environment

Installing WebLogic Server

Creating an EJB 3.0 application in JDeveloper

Creating a database connection

Creating a data source in WebLogic Server

Creating an entity bean

The entity bean class

The Entity configuration file

Creating a session bean

The session bean class

Creating a servlet client

The Servlet class

Creating an Ajax user interface

Sending an Ajax request

Processing the server response

The Ajax user interface JSP

Creating an application deployment descriptor

Deploying the EJB 3 application to WebLogic Server

Creating a build file

Deploying the EJB 3.0 application

Testing the Ajax input form

Summary

9. Using JSF with Entity Relationships

Setting the environment

Creating database tables

Creating an EJB 3.0 application

Creating a database connection

Creating entity beans from tables

Edition entity

Section entity

Article entity

Entity Persistence Configuration file

Creating a session bean

Session bean class

Creating JSF user interfaces

Adding JSF components to the article JSF page

Managed bean for the article JSF page

Adding JSF components to the section JSF page

Managed bean for the section JSF page

Adding JSF components to the Edition JSF page

Managed bean for the Edition JSF page

Adding JSF page navigation

Web configuration file

Running the JSF user interfaces

Creating an Edition entity

Creating a Section entity

Creating an Article entity

The database persisted entities

Summary

10. Creating an EJB 3.0 Web Service

Setting the environment

Creating a JDeveloper application

Creating a database connection

Creating a data source in the WebLogic server

Creating an entity bean

The Entity class

The entity Persistence Configuration file

Creating a stateless session bean

The session bean class

Creating a Web Service class

Creating a web service client

Creating and packaging Web Service classes

Testing the web service

Building the client

Testing the client

Summary

Index

EJB 3.0 Database Persistence with Oracle Fusion Middleware 11g

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• EJB 3.0 Database Persistence with Oracle Fusion Middleware 11g