Book Image

JSF 1.2 Components

Book Image

JSF 1.2 Components


Overview of this book

Today's web developers need powerful tools to deliver richer, faster, and smoother web experiences. JavaServer Faces includes powerful, feature-rich, Ajax-enabled UI components that provide all the functionality needed to build web applications in a Web 2.0 world. It's the perfect way to build rich, interactive, and "Web 2.0-style" Java web apps. This book provides a comprehensive introduction to the most popular JSF components available today and demonstrate step-by-step how to build increasingly sophisticated JSF user interfaces with standard JSF, Facelets, Apache Tomahawk/Trinidad, ICEfaces, JBoss Seam, JBoss RichFaces/Ajax4jsf, and JSF 2.0 components. JSF 1.2 Components is both an excellent starting point for new JSF developers, and a great reference and “how to” guide for experienced JSF professionals. This book progresses logically from an introduction to standard JSF HTML, and JSF Core components to advanced JSF UI development. As you move through the book, you will learn how to build composite views using Facelets tags, implement common web development tasks using Tomahawk components, and add Ajax capabilities to your JSF user interface with ICEfaces components. You will also learn how to solve the complex web application development challenges with the JBoss Seam framework. At the end of the book, you will be introduced to the new and up-coming JSF component libraries that will provide a road map of the future JSF technologies.
Table of Contents (14 chapters)
JSF 1.2 Components
About the Author
About the Reviewers

Displaying success messages in JSF

The JSF framework includes built-in support for rendering validation error messages when form validation fails. These messages are typically rendered using the<h:message> or<h:messages> tags. When a JSF form is posted to the server, the JSF framework's request processing lifecycle includes the following phases:

  1. 1. Restore the UI component tree for the view.

  2. 2. Apply the incoming form data to the UI components in the tree.

  3. 3. Attempt to convert and validate the data.

  4. 4. If the conversion/validation is successful, update the application's model.

  5. 5. Invoke the backing bean method associated with the component that submitted the form.

  6. 6. Send the response back to the client.

When a conversion or validation error causes the conversion and validation phase to fail, the JSF framework sends back a response containing request-scoped FacesMessage objects containing the validation messages for the invalid fields. As these message objects are request scoped...