Re: Unable to Execute Trigger..?

[dhandy@xxxxxxxxxxx (Douglas Handy)]

Scott/AB,

>If you want to make changes inside a trigger, make the changes to the
>"AFTER" record buffer.  This will cause it to be written to the file by
>the operating system.

Or better yet, starting with V3R2 and V3R7, you could use a *BEFORE
trigger and specify ALWREPCHG(*YES) to enable "allow repeating
changes".  This is precisely to handle the situation described, where
the trigger wishes to modify the record being added/inserted by the
underlying application.

But instead of having the trigger program perform any I/O (which
causes the recursive loop you described), with ALWREPCHG(*YES) the
trigger just modifies the trigger buffer.  The modified buffer is then
written to disk instead of the image from the application program.  No
additional disk I/O, and no recursive calls generated.

The default is ALWREPCHG(*NO) to you don't accidentally modify a
record, and to remain backward compatible with triggers prior to V3R2
and V3R7.  Also note it must be a *BEFORE trigger, not *AFTER.

Doug
+---
| 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
+---