Re: Named activation groups vs *CALLER (was: H ActGrp('QILE') vs H ActGrp(*caller))

[Gary Guthrie <garyguthrie@xxxxxxxx>]

Close, Joep. In addition to the call-level or activation group ending
and explicit deletion of the override, an override that is in effect can
be replaced.

For a definitive look at overrides, take a peek at "So You Think You
Understand File Overrides" on page 55 of the July 2001 issue of
NEWS/400. Or if you're a professional member of the AS/400 network, the
following link will take you to the online version of the article.

http://www.as400network.com/resources/artarchive/index.cfm?fuseaction=viewarticle&CO_ContentID=10447

In this article, I lay out the details of overrides and how they
function, including information on call level, activation group level,
and job level overrides as well as the ILE and OPM environments.

By the way, Joep, did you ever read that article? I was looking forward
to your feedback as I recall.

Gary Guthrie
Senior Technical Editor, NEWS/400


Joep Beckeringh wrote:
>
> Jade,
>
> The confusing thing about OVRSCOPE(*ACTGRPDFN) is that it means different
> things in different situations:
> - In the default activation group (OPM environment) it acts as it used to
> act before ILE, or *CALLLVL.  That means it will be in effect until the
> issueing call level ends (or the override is explicitly deleted).
> - In any other activation group the override scopes to the activation group;
> it will be in effect until the activation group is deleted (or the override
> is explicitly deleted).
>
> Joep Beckeringh
>
> ----- Original Message -----
> From: "Jade Richtsmeier" <jade.richtsmeier@mcis.cog.mn.us>
> To: <rpg400-l@midrange.com>
> Sent: Tuesday, September 25, 2001 7:57 PM
> Subject: Re: Named activation groups vs *CALLER (was: H ActGrp('QILE') vs H
> ActGrp(*caller))
>
> > We've been following this thread with great interest.  We're faced with
> the
> > 'OPM calling ILE' situation, and we've been playing around with some small
> > programs to see how different scenerios act.  Here's what we've come up
> > with:
> >
> > First situation:  We have an OPM CL program that does an override to a
> > specific member of a database file, override scope is *actgrpdfn.  An ILE
> > program (compiled with an activation group *new) is called.  The ILE
> program
> > calls a *srvpgm to retrieve a record from the database file.  When we look
> > at the open files, we see the file opened to the specific member, in the
> > *new activation group.
> >
> > We were under the impression that the override would not be in effect in
> the
> > ILE program because the OPM program performed the override and the ILE
> > program was in a new  activation group (which would be a call boundry).
> >
> > Second situation:  OPM CL program does an override to a specific member of
> a
> > database file, override scope is *actgrpdfn, and calls another OPM program
> > that opens/reads the file.  An ILE program (compiled with an activation
> > group *new) is called from the second OPM program.  When we look at the
> open
> > files, we see the specific member opened in the default activation group
> and
> > the same member opened in the *new activation group.
> >
> > The big question is, why is the override still in effect?  .
> >
> > Thanks for any light you can shed on this!
>
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