Re: Data base triggers

[Gary Guthrie <GaryGuthrie@xxxxxxxx>]

Jim,

If you have archives of NEWS/400, the Summer 1997 bonus issue has an
article I wrote entitled "Triggering the Y2K Conversion". The article
described how to use trigger programs to modify the record.

To answer, definitively, the basic questions you have, you need
AlwRepChg(*YES) and you need to modify the buffer at "before update"
time.

Also, if you're a subscriber, the article is on-line at the NEWS/400 web
site.

Gary Guthrie
Technical Editor, NEWS/400



Jim Langston wrote:
> 
> Okay, now I'm confused.  Here are a number of replies:
> 
> "Martin, Booth" <BoothM@goddard.edu> Wrote:
> Yes you can update the record with the trigger program itself.
> When you ADDPFTRG use:
> Allow Repeated Change  . . . . .   *NO
> and make the change to the buffer *BEFORE the *INSERT or *UPDATE.
> 
> Scott Mildenberger <Smildenber@Washcorp.com> Wrote:
> This is possible, we have a lot of triggers that do at this.  You just
> change the field in the after buffer in your trigger program.  When you add
> the trigger to the file, the trigger time must be *before and the ALWREPCHG
> must be *yes.
> 
> Hartman Richard <richard.hartman@brctsg.com> Wrote:
> We have triggers that default fields if they were not entered, which does
> not cause the trigger to fire again because the trigger is already editing
> the fields.
> The trigger only fires once per record when executed, so on the record that
> was changed, anything the trigger does will only occur once after it is
> triggered.
> 
> Which of these is "right"?  Or are they all?
> 
> Regards,
> 
> Jim Langston
> 
> +---
> | This is the RPG/400 Mailing List!
> | To submit a new message, send your mail to RPG400-L@midrange.com.
> | To subscribe to this list send email to RPG400-L-SUB@midrange.com.
> | To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
> | Questions should be directed to the list owner/operator: david@midrange.com
> +---
+---
| This is the RPG/400 Mailing List!
| To submit a new message, send your mail to RPG400-L@midrange.com.
| To subscribe to this list send email to RPG400-L-SUB@midrange.com.
| To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---