RE: Pete's web5250 was->Re: Business Developers was ->Re: IBM Gives RPG Devotees Their Own Café

Maybe it's an idea to replace the bloated browser with a java client, JavaFX to be precise which is quite efficient and can provide a very aesthetic look. Its better suited for business apps (e.g. it can be made keyboard centric much easily as html/javascript) *and* you have the availability of the vast java platform libraries on the client, *and* you have far less security problems. For example it would be possible to access the local disk in a controlled way.

As others (well, at least one other person) already stated, the browser is a dead end for serious (business) apps, IMHO.

Date: Sat, 20 Dec 2008 16:18:29 -0600
From: joepluta@xxxxxxxxxxxxxxxxx
To: web400@xxxxxxxxxxxx
Subject: Re: [WEB400] Pete's web5250 was->Re: Business Developers was ->Re: IBM Gives RPG Devotees Their Own Café

Nathan Andelin wrote:

From: Niels Liisberg
One idea ... is to convert the 5250 stream on the fly to
JSON and create a super thin java-script client ...

Yes. Build a short data stream that a JavaScript client can parse & render as DOM input/output elements at runtime. R=5, C=10 could mean row 5, colum 10, for example. That would be much less verbose than complete HTML pages generated on the server and sent to the browser.

It's a great theory, but it falls a little short in practice. We did
this about five years ago with PSC. We created a "high performance"
version that sent only terse UI requests. We reached our goal (page
sizes under 3K) but the problem was the performance on the client.
Constantly creating dozens of widgets in the browser does not perform
well, especially on smaller PCs. If you do decide to pursue this sort
of architecture, be very sure that you test strenuously with the lowest
configuration you intend to support.

Joe
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