Re: 5250 to Web Interface / Application Modernization

" But you give up the ability to respond to any type of event that may occur at any time within web browsers."

No - you don't have to. Many of the limitations we perceive with 5250s are imposed by Workstation Data Management. But using OA WDM is not in play - so neither are the limitations.

I'm not saying that completely designing a new modern UI should be done with an OA handler approach - although I've seen it done very very well. But your perception of what it can and cannot do is slewed by 5250 thinking.

Jon Paris

www.partner400.com
www.SystemiDeveloper.com

On Apr 9, 2019, at 2:43 PM, Nathan Andelin <nandelin@xxxxxxxxx> wrote:

On Mon, Apr 8, 2019 at 3:46 PM Jon Paris <jon.paris@xxxxxxxxxxxxxx> wrote:

An OA solution is not limited to the 5250 paradigm and so does not really
belong in the same category as screen scrapers. Not to say it isn't used as
a sophisticated version of those but it is by no means limited to that
design scenario.

I feel that the workstation record-write, record-read paradigm is not
fitting for web interfaces. Yes, it appeals to legacy application
developers. Yes, you can force-fit it via OA. But you give up the ability
to respond to any type of event that may occur at any time within web
browsers. That's a constraint that I wouldn't be willing to accept.

I'm tempted to delineate Web UI designs that don't fit the workstation
record-write, record-read design pattern. But it seems that the point
should be intuitive, and sufficient.

Screen-scraper proponents argued for years that their interfaces weren't
constrained by the 5250 paradigm, saying that the screens could be
extended. But people ran into constraints, nevertheless.
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