In JavaServer Faces (JSF) 2.0, Facelets is the default view declaration language (VDL) instead of JavaServer Pages (JSP). With Facelets, you don’t need to configure a view handler as you used to do in JSF 1.2. Facelets is a JSF-centric view technology.
Facelets is based on compositions. A composition defines a JSF UIComponents structure in a Facelets page. A Facelets application may consist of compositions defined in different Facelets pages and run as an application.
Facelets is a templating framework similar to Tiles. The advantage of Facelets over Tiles is that JSF UIComponents are pre-integrated with Facelets, and Facelets does not require a Facelets configuration file, unlike Tiles, which requires a Tiles configuration file.
JSF Validators and Converters may be added to Facelets. Facelets provides a complete expression language (EL) and JavaServer Pages Standard Tag Library (JSTL) support. Templating, re-use, and ease of development are some of the advantages of using Facelets in a Web application.
In this article, we develop a Facelets Web application in Oracle Enterprise Pack for Eclipse 11g and deploy the application to Oracle WebLogic Server 11g. In the Facelets application, an input text UIComponent will be added to an input Facelets page. With JSF navigation, the input Facelets page is navigated to another Facelets page, which displays the JSF data table generated from the SQL query specified in the input Facelets page. We will use Oracle Database 11g Express Edition for the data source. Templating is demonstrated by including graphics for the header and the footer in the input and the output; the graphics have to be specified only once in the template.
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