Processing and Navigation
In the previous chapter, I showed you how to create web pages using different technologies (HTML, JSP, JSTL, etc.), knowing that JSF is the preferred Java EE specification for writing modern web applications. However, drawing pages with graphical components is not enough; these pages need to interact with a back-end system, navigate through pages, and validate and convert data. JSF is a rich specification: managed beans allow you to invoke the business tier and to navigate in your application, and a set of classes allow you to convert component values to and from a corresponding type or validate them to conform to business rules. With the use of annotations, it is now easy to develop custom converters and validators.
KeywordsBusiness Logic Application Scope Document Object Model Deployment Descriptor Business Tier
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