Document Information


Part I Introduction

1.  Overview

2.  Using the Tutorial Examples

Part II The Web Tier

3.  Getting Started with Web Applications

4.  JavaServer Faces Technology

5.  Introduction to Facelets

6.  Expression Language

7.  Using JavaServer Faces Technology in Web Pages

8.  Using Converters, Listeners, and Validators

9.  Developing with JavaServer Faces Technology

10.  JavaServer Faces Technology: Advanced Concepts

11.  Using Ajax with JavaServer Faces Technology

12.  Composite Components: Advanced Topics and Example

13.  Creating Custom UI Components and Other Custom Objects

14.  Configuring JavaServer Faces Applications

15.  Java Servlet Technology

16.  Uploading Files with Java Servlet Technology

17.  Internationalizing and Localizing Web Applications

Part III Web Services

18.  Introduction to Web Services

19.  Building Web Services with JAX-WS

20.  Building RESTful Web Services with JAX-RS

21.  JAX-RS: Advanced Topics and Example

Part IV Enterprise Beans

22.  Enterprise Beans

23.  Getting Started with Enterprise Beans

24.  Running the Enterprise Bean Examples

25.  A Message-Driven Bean Example

26.  Using the Embedded Enterprise Bean Container

27.  Using Asynchronous Method Invocation in Session Beans

Part V Contexts and Dependency Injection for the Java EE Platform

28.  Introduction to Contexts and Dependency Injection for the Java EE Platform

About Beans

About CDI Managed Beans

Beans as Injectable Objects

Using Qualifiers

Injecting Beans

Using Scopes

Overriding the Scope of a Bean at the Point of Injection

Giving Beans EL Names

Adding Setter and Getter Methods

Using a Managed Bean in a Facelets Page

Injecting Objects by Using Producer Methods

Configuring a CDI Application

Using the @PostConstruct and @PreDestroy Annotations With CDI Managed Bean Classes

To Initialize a Managed Bean Using the @PostConstruct Annotation

To Prepare for the Destruction of a Managed Bean Using the @PreDestroy Annotation

Further Information about CDI

29.  Running the Basic Contexts and Dependency Injection Examples

30.  Contexts and Dependency Injection for the Java EE Platform: Advanced Topics

31.  Running the Advanced Contexts and Dependency Injection Examples

Part VI Persistence

32.  Introduction to the Java Persistence API

33.  Running the Persistence Examples

34.  The Java Persistence Query Language

35.  Using the Criteria API to Create Queries

36.  Creating and Using String-Based Criteria Queries

37.  Controlling Concurrent Access to Entity Data with Locking

38.  Using a Second-Level Cache with Java Persistence API Applications

Part VII Security

39.  Introduction to Security in the Java EE Platform

40.  Getting Started Securing Web Applications

41.  Getting Started Securing Enterprise Applications

42.  Java EE Security: Advanced Topics

Part VIII Java EE Supporting Technologies

43.  Introduction to Java EE Supporting Technologies

44.  Transactions

45.  Resources and Resource Adapters

46.  The Resource Adapter Example

47.  Java Message Service Concepts

48.  Java Message Service Examples

49.  Bean Validation: Advanced Topics

50.  Using Java EE Interceptors

Part IX Case Studies

51.  Duke's Bookstore Case Study Example

52.  Duke's Tutoring Case Study Example

53.  Duke's Forest Case Study Example



Overview of CDI

The most fundamental services provided by CDI are as follows:

  • Contexts: The ability to bind the lifecycle and interactions of stateful components to well-defined but extensible lifecycle contexts

  • Dependency injection: The ability to inject components into an application in a typesafe way, including the ability to choose at deployment time which implementation of a particular interface to inject

In addition, CDI provides the following services:

  • Integration with the Expression Language (EL), which allows any component to be used directly within a JavaServer Faces page or a JavaServer Pages page

  • The ability to decorate injected components

  • The ability to associate interceptors with components using typesafe interceptor bindings

  • An event-notification model

  • A web conversation scope in addition to the three standard scopes (request, session, and application) defined by the Java Servlet specification

  • A complete Service Provider Interface (SPI) that allows third-party frameworks to integrate cleanly in the Java EE 6 environment

A major theme of CDI is loose coupling. CDI does the following:

  • Decouples the server and the client by means of well-defined types and qualifiers, so that the server implementation may vary

  • Decouples the lifecycles of collaborating components by doing the following:

    • Making components contextual, with automatic lifecycle management

    • Allowing stateful components to interact like services, purely by message passing

  • Completely decouples message producers from consumers, by means of events

  • Decouples orthogonal concerns by means of Java EE interceptors

Along with loose coupling, CDI provides strong typing by

  • Eliminating lookup using string-based names for wiring and correlations, so that the compiler will detect typing errors

  • Allowing the use of declarative Java annotations to specify everything, largely eliminating the need for XML deployment descriptors, and making it easy to provide tools that introspect the code and understand the dependency structure at development time