Re: How to use DataQues with RPG ?

["Scott Klement" <infosys@xxxxxxxxxxxx>]

Jocke,

I always think about a "Data Queue" as being a communications object,
perhaps more akin to a socket than to a file...

If you've got two programs that are running at the same time, and
they need to send & receive data from each other while their both
running, data queues work great.

If the programs run one after the other in the same job stream, I'd
suggest using either a PF, or if speed is more important than the
ease of the programming, use a User Space.

The Object API's gives the syntax of how you can call the various
data queue API's...  but those API books aren't the easiest place
to learn new things...

To get started with Data Queues, I'd actually suggest looking at
the "CL Programming" manual, which has a section on "Using Data
Queues."  Then, just adapt this knowledge to RPG...

the CL Programming Manual:
http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/QBKAUO00/CCONTENTS

The specific chapter:
http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/QBKAUO00/3.5

Hope that helps...


Jocke Berggren <jocke@fsys.se> wrote:
> How do I use DTAQ's between two RPG programs to exchange data ?
>
> Today we use a physical file with the write, read, delete method.
>
> Can't find anything about DTAQ's in the RPG IV manuals.....
>
> Whats the benefit of using DTAQ's anyway ?
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