RE: Using a trigger to restrict access to costing bill

Someone may have already mentioned this, but if you issue an *escape message
in the trigger program, the record will NOT be updated. 

Eric DeLong

-----Original Message-----
From: Bazinet, Bill [mailto:bazinew@leanintree.com]
Sent: Friday, March 30, 2001 11:59 AM
To: 'rpg400-l@midrange.com'
Subject: RE: Using a trigger to restrict access to costing bill




The difficulty with this approach is that the trigger must be a *BEFORE
or*AFTER timing.  If it's before you can definitely determine that the
insert/update/delete shouldn't occur but I don't see how you can prevent it.
Remember the trigger gets copies of the output buffer from the program
causing the trigger to fire.  If you use a *BEFORE trigger, upon return to
the I/O processor the original action will occur.  If you use an *AFTER
trigger, the operative work is "AFTER".
Using an *AFTER trigger, you could go back and reset the orignal state of
the record because the trigger does contain the before picture of the
record.

Terri wrote 
>Hi,
>    I have a bill of material file that has several bills for each item =
>number. One for manufacturing and one for costing. I need to restrict =
>maintenance of the costing bill to accounting users only. I would like =
>to not modify the packaged maintenance program.  Would a trigger work =
>for this? I haven't used them before, I thought it might work based on =
>other e-mails to this list.

Terri Harteau
tshaw@felkerbrothers.com
Felker Brothers Corp.

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