RE: Notifying an open program(s) of a new record:

[Colin Williams <Williamsc@xxxxxxxxxxxxxxxxx>]

Try implementing it using data queues. 
Create a batch process to monitor changes on your file, via triggers, or
via DSPJRN to an output file(you would have to start journalling the
file). Then send some data to a data queue. 
Get your subfile program to refresh when an entry is placed on the data
queue. Use the QSNDDTAQ/QRCVDTAQ programs to send and recieve data
to/from the data queue.
More than one workstation. Put the list of dataqueues/workstations in a
file.

-----Original Message-----
From: boothm@ibm.net [mailto:boothm@ibm.net]
Sent: Thursday, May 06, 1999 1:56 PM
To: MIDRANGE-L@midrange.com
Subject: Notifying an open program(s) of a new record:


Either I am having a brain flat or there's more to this than meets the
eye.

I want to have a subfile program open on users' desks.  That subfile
will
show selected records from a file.  During the work day records will be
added and changed in that file.  In order for the file to be up to date
a
refresh has to occur.  One can of course manually refresh the subfile,
or
even put a timer cycle onto it.

However there must be a way to signal the program, or at least the
workstation(s) that a change has occurred?  That seems straight forward
but it isn't clear to me.  I have been thinking a trigger on the file
would serve the purpose, and it might if I could see how to notify the
subfile program.  A second part of that problem is that there would be
more than one workstation to notify.

Any ideas?

-- 
-----------------------------------------------------------
boothm@ibm.net
Booth Martin
-----------------------------------------------------------

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