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I've written and published a basic handler that uses a web service via Scott's HTTPAPI - a few years old now but the principals remain the same. http://www.ibmsystemsmag.com/ibmi/developer/general/oa_rpg/ It used my OA template as the foundation which can save you a lot of time and effort if you have not written fo OA before. Details here: http://ibmsystemsmag.com/ibmi/developer/rpg/open-access-templates/ <http://ibmsystemsmag.com/ibmi/developer/rpg/open-access-templates/>

Which reminds me - I really must update that to dcl-x data definitions.

Not sure how well you "cache" idea will work unless you can guarantee that there is never any direct access to the related file. Sound like a problem waiting to happen.


Jon Paris

www.partner400.com
www.SystemiDeveloper.com

On Jan 14, 2019, at 5:15 PM, Charles Wilt <charles.wilt@xxxxxxxxx> wrote:

So we've got a requirement to modify our existing RPG applications so that
for some users, instead of updating a local Db2 file, we need to make REST
call to post the data to an external server.

Reads will be from the local Db2 table; though we're planning to cache the
"update" that was posted to the web service. So that we don't have to wait
for the data to be replicated back to the i. (We considered a Db trigger,
but that idea was a no-go. Eventually the READs for some users will also
be pointed to the web service)

Anybody ever done or even considered such a handler?

Any tips/tricks/gotchas you can share?

Thanks,
Charles
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