Re: CallP & CallB in SQLRPGLE ??

[Gary Guthrie <GaryGuthrie@xxxxxxxx>]

Hi Joep,

Optimistic, perhaps. However, for those that want to know how file
overrides really work, at least the information will be there. Regarding
your comments about complexity and "all the problems people are
reporting in mailing lists and news group"... That's why I put the
information together. It became painfully obvious that this was a topic
that just wasn't understood. In fact, though I know some very, very good
programmers, I cannot think of a single one that I would bet fully
understands how overrides work!

Regarding the simplicity in the pre-ILE world - to be perfectly honest,
I don't even think that most understand fully how file overrides work in
OPM only. I attribute the lack of understanding to the fact that for the
most part, folks have used file overrides in a very simple way rather
than exercise their limits. This, in my opinion, has lulled many into a
false notion as to how they work. The real difference is that ILE
illuminates the need to understand file overrides.

I think there is more mystery than complexity involved with overrides.
The bottom line is there is a handful of rules to remember. Remember
those rules and you can apply them to ALL scenarios. Though there are a
couple of rules induced by ILE, the set of rules isn't really any more
complicated than OPM-only. There's just a little bit more to memorize.
It's a manageable amount, though!

Anyhow, I'd appreciate your feedback as to whether the article makes
overrides any clearer if and when you get the opportunity to read it.

Gary Guthrie



Joep Beckeringh wrote:
> 
> I do think, however, that you are slightly optimistic when you hope to
> 'demystify file overrides for the masses'.  Apparently (according to all
> the problems people are reporting in mailing lists and news group) file
> overrides in ILE are a complex subject.
> It is just one of the things that used to be simple in the pre-ILE world.
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