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Nathan M. Andelin wrote:
From: "Hans Boldt" <boldt@xxxxxxxxxx>
"Webifying" a tradional green-screen app (using
whatever tool) may well give it a few more years
of life. But in my (perhaps  jaded and cynical)
opinion, it's only delaying the inevitable.


The flip side is that so many software rewrite efforts have failed!

I'm working with folks who are taking an incremental approach.  While
retaining the iSeries database, queries, reports, statements, and many batch
procedures, many of the 5250 programs will be replaced incrementally.

A menu system consisting of more than a thousand menu items will be
converted to a tree structured HTML interface that may activate and bring
forward either a character mode 5250 panel, a HTML panel, or possibly some
other UI option, depending on the circumstance.  The browser offers an
environment for integrating multiple types of user interfaces, while
enabling swapping between them.

The idea is to integrate old and new, while incrementally replacing parts
that would be better served by graphical point and click scrollable pages.


Incremental rewrite is a good approach. Certainly a heck of a lot better than sitting on your hands and hoping a more productive competitor doesn't enter the arena.


Also don't forget that in any rewriting or restructuring effort, there's one important company asset that doesn't have to change at all - the test suite.

Cheers! Hans



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