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GWT 1.5 Imminent


New version adds string interning and Java 1.5 support

By Alex Handy
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December 28, 2007 —  (Page 1 of 2)
SAN FRANCISCO — The rise of the Google Web Toolkit could lead to the demise of the Struts Java Web framework. David Geary, a member of the expert group for the JavaServer Faces 2.0 specification, also insinuated that JSF is in no danger of becoming obsolete, during a talk at the Voices that Matter Conference on Google Web Toolkit (GWT) conference here in early December.

Geary claimed that GWT's biggest draw for enterprise developers is its similarity to Java’s Abstract Window Toolkit, Swing and the Standard Widget Toolkit. Indeed, a show of hands from the audience showed that nearly 80 percent of those in attendance had worked with these frameworks in their environments. He highlighted the parallels by showing off the code behind Yahoo's Trips Planner site, which is built with GWT. In that site, users can drag and drop list items in an ordered list, in a manner similar to that seen in desktop applications.

“There's no amount of Struts code in the world that can do this,” he said, citing that framework's shortcomings.

When asked what made GWT so unique, Geary described a feature of GWT that he initially thought was a major shortcoming.

“GWT doesn't give you built-in database access,” said Geary. “It won't interfere with the framework on the server. You can use it with JSF or Ruby on Rails [RoR]. We can integrate with other frameworks that have a lot of horsepower on the server, like RoR, or PHP with Drupal.”

Despite his disdain for Struts, Geary discussed integrations with the framework. To illustrate the possibilities, he showed off a GWT-based mortgage calculator widget pasted on top of a Struts page.

“This is making an RPC call in the server with a table of market rates, and [it] sends back JSON [JavaScript Object Notation]. The JSON is parsed on the client. GWT provides extensive support for parsing the JSON. We've added AJAX goodness to the barren landscape of a sorry Struts application. What you might want to do is replace [the] HTML elements on top with GWT widgets. Then you need a deeper level of integration. That sounds like a fair amount of work, but there's already a Struts-GWT integration project out there,” said Geary.




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