RE: Is this the University of Midrange.com? (was Re: Comp in DDS)

Be very careful when using DDS to do validation. Each emulator has a
different way of interpreting data from and sending data back to the
iSeries. We have come across several instances where DDS validation has been
made inoperative by the Mocha emulator. And other instances where Rumba
gives weird results on this type of validation.

Bryan K. Merrell
bkmerrell@xxxxxxxxxxxxxxx


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of rick.baird@xxxxxxxxxxxxxxx
Sent: Thursday, March 18, 2004 3:02 PM
To: RPG programming on the AS400 / iSeries
Subject: Re: Is this the University of Midrange.com? (was Re: Comp in DDS)


I'm with you on this one.  Any field editing that directly or indirectly
controls what data is put in a file, I put in editing routines in my code -
and I dare say, you should probably encapsulate as much of it as prudent in
callable functions/subprocs, so they may be re-used as needed.

I do, on the otherhand, do some DDS field checking for subfile 'option'
codes and the like.

for instance:

S1OPT       VALUES('2' '3' '4' '9')

this seems very reasonable to me.  The only time I wouldn't do the above is
if the valid options could change based on outside factors.

rick

-------original message----------------
Are there any good reasons to validate in DDS?

I have come to accept as my "programming style" to
NEVER validate in DDS. And after this discussion, I
believe that may be the correct decision...