June 2014
Intermediate to advanced
578 pages
12h 2m
English
Content preview from Mastering JavaServer Faces 2.2Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 1. Dynamic Access to JSF Application Data through Expression Language (EL 3.0)
Java Expression Language (EL) is a compact and powerful mechanism that enables dynamic communication in JSP and JSF-based applications (including development frameworks based on JSF such as PrimeFaces, ICEfaces, and RichFaces); we embed expressions in the presentation layer to communicate with the application logic layer. EL provides bidirectional communication, which means that we can expose application logic data to the user, but we also can submit user data to be processes. Generically speaking, EL can be used to populate HTTP requests with user data, to extract and expose data from HTTP responses, to update HTML DOM, to conditionally process data, and much ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.