XForms adopts the familiar XPath expression language for two purposes. First, it uses it as a query language for addressing and identifying fields within the form and the user-submitted data. In particular, it uses XPath expressions to bind input controls to particular parts of the form's data model. Second, it uses XPath as its basic calculation language for output, bind, and setvalue elements. The focus of this article is mostly on the second usage, though some of these functions are useful for binding as well.
The Java Platform has evolved into a solid and mature enterprise application platform. One of the signs of a mature application platform is that there are a lot of spin-off techniques and options to integrate with other techniques. This article will go into detail about how to write JEE applications with Grails, a spin-off of traditional JEE application development, and Flex, a different technique that can be used with Java. Both frameworks can be highly productive. Combining the two frameworks holds the promise of building rich internet frontends to J2EE applications while retaining the high productivity.
The jQuery UI package aims to create a well-defined and reliable set of user interface widgets that you can reuse within your own Web applications. The goal is to provide well-tested widgets that go beyond those available in HTML Input elements, and ease the work of all user interface developers.
This second article in the jQuery series looks at how to add more interaction to any Web site to create a dynamic Rich Internet Application. Learn how jQuery utilizes a combination of events produced by user interaction, information gathered from the Web site itself, and the ability to change the look and feel of the application without reloading to create these RIAs quickly and easily.
This article looks at web programming via Haskell. Web programming is supported in various ways, from low-level libraries for the basic operations like communicating over http and creation of html documents, up to sophisticated frameworks for building apps and performant web servers for running the apps. January’s article will look at the frameworks, primarily Yesod. This article will look at Fay, which is a Haskell alternative to CoffeeScript.
The increasing reliance on data-driven Web sites has caused an incline in the number of attacks launched against them. As a developer, understanding how a site can be attacked is paramount to making it secure. Discover some of the more common attacks, and learn about the tools you can use to spot them.
Imagine that you are tasked to create a new application that will live in the Web 2.0 world. Some of your users are perfectly happy with HTML-based user interfaces while others expect every application they use to behave like Excel. Your business sponsor expects a productivity-enhancing user experience, but your CIO won't allow you to develop anything that a user needs to manually deploy. You know HTML won't cut it, but what else is out there? This article explores a series of Web 2.0 user interface technologies that enable you to build applications with better-than-browser user experiences. As a result, you can centrally deploy and manage them just like any other Java™ 2 Enterprise Edition (Java EE) application.