Henry Story thinks Echo2 is "Web 2.0 in Java", and they do have a killer demo. But it's yet another example of incredibly brilliant developers going to great lengths to bring the desktop app to the browser, and ignoring that the value of the web lies in hyperlinks.
So navigate that demo: Click the "Next" arrow. Your address bar doesn't change even though you have navigated to what most people would call a clearly identifiable different resource.
I can't give you the link to "page 2" because it isn't addressable on the web. Sorry. Go to page 1, then click to go to page 2.
Under the hood, it's the usual collection of RPCs masquerading as URLs -- some GET, some POST -- using port 80 since we know it's open, after all. Every single GET uses all the usual tricks to make sure that nothing -- not even JPEGs -- gets cached.
I love the look of that demo, and I think their technology is clever. With a little effort I am sure they can make the framework webby.
Hugh Winkler holding forth on computing and the Web
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