RE: Iterate through the fields in an externally described datastructure

["Phil" <sublime78ska@xxxxxxxxx>]

In the trigger pgm you have both the before and after image - put them both
into separate data structures and start comparing.  The ones that are
different, and at least 1 will be different, write to the log file.

Phil

>
> >>> MWalter@hanoverwire.com 04/11/02 01:42PM >>>
> Hello all,
>
> Here's one to chew on. Is there a way, preferably in RPGLE, to iterate
> through the fields in an externally described data structure and display,
> print, compare the values. Here's my problem.
>
> I have a file with about 60 fields that needs  an audit when it's changed.
> A perfect application for a trigger program. The problem is that
> they don't
> want a copy of the entire record only the fields that have been changed.
> I'd like a way to not have to change the trigger program if the database
> changes so I want to systematically iterate through the fields in the
> before and after buffer and compare the contents. If they are different,
> write a record to an audit file. Sort of like the .fields
> collection in VB.
>
>  I thought of using the output from a QUSLFLD API and comparing
> values as a
> substring of the DS, but I think it would puke on Packed fields.
>
> Any input would be appreciated.
>
>
> Thanks,
>
> Mark
>
>
> Mark Walter
> Sr. Programmer/Analyst
> Hanover Wire Cloth a div of CCX, Inc.
> mwalter@hanoverwire.com
> http://www.hanoverwire.com
> 717.637.3795 Ext.3040
>
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