RE: Changing triggers -- RPG400-L

Title: RE: Changing triggers

Jim,

We use several methods for handling triggers. One method uses a trigger on FILEA (not it's real name, HA HA). The trigger program (RPGLE) receives the trigger buffer and sends the data to a data queue. PGMA (RPGLE, not it's real name) is a never ending program waiting for an entry to arrive on the data queue. One advantage to this method is you can start multiple PGMA's waiting on the same data queue.

Another method sends the trigger buffer data to a data queue being monitored by a never ending CLLE program. The CLLE program receives the entry, looks in the trigger buffer information area, and calls the appropriate program to process the buffer based on the file name.

Still another method places the trigger buffer data from multiple files files into a single, keyed data queue. Many different programs are waiting to receive data from this data queue. The key to the data queue entry is the program name to process the entry.

-----Original Message-----
From:   Scott Mildenberger [SMTP:Smildenber@Washcorp.com]
Sent:   Monday, March 27, 2000 11:23 AM
To:     'RPG400-L@midrange.com'
Subject:        RE: Changing triggers

Jim,

To accomplish this we made the trigger programs do nothing but call another
program passing the parms to it. This additional layer allows us to change
the programs that are actually doing the work whenever we want.

Scott Mildenberger

> -----Original Message-----
> From: Nelson, Jim   (RCIS) [SMTP:Jim.Nelson@RCIS-NET.COM]
> Sent: Monday, March 27, 2000 8:20 AM
> To:   'MIDRANGE-L@midrange.com'
> Subject:      Changing triggers
>
> In our development environment, we are changing SOME trigger on SOME file
> almost daily. To make such a change, the file that trigger is based on
> must
> not have any locks. This has become unworkable with the number of
> developers and functional test people involved.
>
> We are talking about creating completely generic triggers to call a stored
> procedure which will either run the activity intended or call one or more
> other stored procedures. When a change was needed it would be made to
> that
> front-end stored procedure.
>
> Before we get too deep into this, it would be nice to know if there are
> any
> 'gotchas'.
>
> Has anybody else gone down this road? Has it worked? Anything we should
> keep in mind?
>
> Thanks,
> JN
>
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