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Craig, you might be able to glean some info from this midrange-l
link/thread.

https://archive.midrange.com/midrange-l/201801/msg00984.html

I posted a slightly similar question to the group recently and there are
some great ideas in the thread.

We decided to go the journaling route for our purposes.

hth,

John


<snip>
Hi all,

I have a trigger program where updates to the table could come from:

1. The general application / support staff OR
2. An Application Server processing messages coming in from an external
system.


- If an update is caused by 1. then message needs to be sent out to the
external system.
- If an update is caused by 2. then the external system instigated the
update and therefore does not require a message.

A given trigger program can always determine the Application Server
program
relevant to the file it's on and therefore one way to determine if it is
case 2 would be to check if that program was in the call stack, by using
an
API ( quite expensive I think? ) or trying to send a message to a Program
Queue of that name ( will fail if it's not in the call stack )

These seemed like OK solutions if they could be done once at
initialisation
and remembered, but that's not a great idea in a trigger program...
And I fear that the call stack one is a bit expensive to do every time and
the program message one will fill up the joblog....

So I'm wondering about other non-expensive ways to determine in the
trigger
program if it needs to send out a message. Some simple but not foolproof
things that occur to me are:

- Job User or Name if this can be guaranteed to only be used in case 2.
- Jobs in case 2 will have their own subsystem but I can't see that
attribute on the QWCRTVCA API.
- Accounting Code seems to be linked to User Profile or JOBD and can't
be changed on the fly.

Anyone know of a very inexpensive way to tag a job that could be utilised
in a trigger program.

Thanks and regards,
Craig
</snip>



John Rusling
Senior Developer/Analyst
Quadion LLC
Minnesota Rubber & Plastics
952.927.1419

“In a world of ambiguous column names... why wouldn't you use PREFIX?”
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