Upgrading your Enterprise JavaBeans skills to EJB3

Prerequisites:

Existing EJB 2.x developers who want to quickly gain an insight into the new features available in EJB 3.

Delegates should have a good grounding in J2EE development using any existing application server.

Course Description:

The new EJB 3 specification is included as part of Java Enterprise Edition 5 (JEE 5) and is a major step forward, both in terms of facilities and ease of development.

This course provides you with the necessary skills and techniques to upgrade your existing EJB (1.x – 2.x) development skills to EJB 3, Sun's new enterprise framework for building scalable, robust and secure applications

You will gain knowledge of the new features in EJB 3, enabling you to realise the productivity gains over and above earlier versions of EJB.

Throughout the course you will be learning how to use these exciting new features to build enterprise applications. Options for upgrading and coexisting with your existing codebase will be examined.

The course is presented as a mixture of lectures and hands-on exercises with an emphasis towards the practical sessions.

Course Objectives

On completing this course, you will be able to:

- Use the new annotation features to augment JNDI
- Use the new EJB annotations as a replacement for deployment descriptors
- Use the new persistence model to create entity beans
- Understand the enterprise bean lifecycle
- Write applications that utilise sensible defaults
- Coexist with both EJB 2.X and 3

This course includes the following modules:

Annotations

• Standard JEE annotations
• Augmenting JNDI using resource injection
• Default behaviour
• Specifying defaults
• Deployment Descriptors
• Pros and Cons
• EJB specific annotations

Interfaces

• No need for EJBObject and EJBHome
• Dealing with multiple interfaces

Interceptors

• What they do
• How to annotate them
• Writing an interceptor
• Using interceptors for lifecycle management
• Using Interceptors for business

Using the Java Persistence API

• Entities
• Entity Operations
• The Entity Manager
• Mapping entiity relationships using annotations
• The query language
• Packaging the entities

Enterprise Bean

• New lifecycle annotations
• Writing session, entity and message driven beans

Compatibility

• Combining EJB 2.1 and EJB 3
• Calling EJB 3 components from existing clients
• Using EJB 2.1 CMP and EJB 3 persistence