Re: Data Queues

[Jodi_Walker@xxxxxxxxxxxxxxxxxxx (Jodi Walker)]

     to send data to a data queue, use this API:
     QSNDDTAQ with 4 required parms of 1) the data queue name, 2) the data 
     q library, 3) a 5 digit decimal variable (or constant) containing the 
     number of characters to send to the dtaq (entry length) and 4) the 
     variable (or constant) containing the actual data to send to the 
     queue.  There are also two optional parms that support adding key 
     information to the dtaq entry.  If you didn't create the dtaq as 
     SEQ(*KEYED) you don't need these optional parms.
     
     to receive from a dtaq, use the following API:
QRCVDTAQ with 5 parms, where the 1st four are just like in the send API, except 
that the API will return entries to the variables for parms 3 & 4.  The 5th parm
is a 5 digit decimal variable that controls how long to wait for an entry to 
arrive on the dtaq.  If you specify a negative value, the API waits 
indefinitely.  Value of 0 means don't wait at all.  There are additional parms 
that can support key and sender id info.
        
for more info, an easy place to look is IBM's Control Language Programmers Guide
- I know you're looking for RPG, but what works in one generally applies to the 
other.

remember that with dtaqs, once an entry is received from the dtaq, it is gone if
the program that processes that entry fails for whatever reason, the entry can't
be retrieved. also, dtaqs grow, but even as entries are deleted, they never 
decrease in size; they always remain the size it was when it had the most 
entries.  you can always schedule deletes and recreates of the dtaq as part of 
maintenance.

HTH
jw

______________________________ Reply Separator _________________________________
Subject: Data Queues
Author:  Jim Langston <jlangston@conexfreight.com> at Internet
Date:    06/08/2000 3:37 PM


I have a project that must be completed before next Tuesday that involves DDM 
Data Queues.
That is, the data queue resides on another AS/400 connected via SNADS.  The Data
Queues
have been set up (not hard at all) and now I need to write an RPG program on my 
side to send
data to this data queue.
     
Unfortunately, I have never dealt with data queues before so have absolutely no 
idea where to
start.  I have worked with data areas a bit, and was hoping data queues were 
somewhat
similar, but could not display the data queue data like I can with data areas 
(DSPDTA).
     
Can anyone send me a URL to go to?  Or a boiler plate program?  I need to get up
and
running on this very quickly, and there are a number of aspects of this program 
I need to
write (add file trigger, data conversion and table lookup, write to data queue, 
find way to
receive acknoledgment, etc...).
     
Regards,
     
Jim Langston
     
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