As Asynchronous JavaScript and XML (AJAX) take center stage in the race to develop user interfaces for rich Internet applications, some companies have had good results with pure Java.
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In March 2005, Farm Credit Canada (FCC) started to put together a Web front end prototype using Java Server Faces technology for a loan renewal application that would run in a portal. Development was cumbersome and taking a long time. "We were just finding all sorts of idiosyncrasies with JSF; I mean it is still relatively new technology," says Greg Hutchinson, FCC's principal developer.
From an end user standpoint, there were difficulties with the portal. "If they started entering some data in one portlet, hit a button in another portlet, they would lose the data from the other portlet," he recalls.
In July, while the JSF project was still underway, Hutchinson noticed that Canoo Engineering AG, a Swiss company that offers a server-side API to Java Swing components (text boxes, buttons, other widgets), inked a major agreement with the Union Bank of Switzerland. With Canoo's technology UltraLightClient, each client-side Swing component has a corresponding component on the server, so developers use a server-side programming model. The architecture features an application-independent Java 2, Standard Edition presentation engine, which displays the user interface on the client and forwards the user interactions to the server. Like an HTML browser, any number of ULC-based applications can use the same ULC presentation engine. The ULC presentation logic, business logic, business objects and persistence all reside on the Java 2 Enterprise Edition server.
Already familiar with Canoo's technology, Hutchinson brought consultants from the company to FCC, did a proof of concept and then switched technologies in October. "We re-did the whole user interface using their technology in the five months that were remaining on the project," says Hutchinson.
With ULC’s server-based solution, all the application code was running on the server side. Programmers didn't have to worry about what was running on the client, and things like browser interdependencies, because they were handled by Canoo's generic framework.
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