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  3. February 2012

RE: Can a Command Validity Check program be an RPG ILE program

Thanks everyone for the help, I believe I "Got it"

John

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Vern Hamberg
Sent: Thursday, February 09, 2012 2:13 PM
To: Midrange Systems Technical Discussion
Subject: Re: Can a Command Validity Check program be an RPG ILE program

This is correct - a VCP is always called first, so you can send back an
optional diagnostic (model of the message ID is CPD0006) and the specific
escape message (CPF0002) for this use.

John, you are right, when you prompt a command and then press enter after
setting parameters, it will call the VCP and stay in the prompt - with the
CPF0002 showing at the bottom of the prompt. It may be you didn't sent the
right messages - has to be done just right - see chapter
9 of CL Programming for details.

To Phil - if you check stuff in the VCP, you would normally not put the same
checks in the CPP.

One thing I just learned - you don't want the VCP called when you are
programming in SEU or whatever - the way to prevent it is to use variables,
not literals, in the parameters. If you use literals, the VCP will test
those values and may fail - one case I ran into long ago was checking
existence of an object - guess what, it wasn't there - and the compile and
everything broke. Now I know how to prevent that.

HTH
Vern

On 2/9/2012 12:29 PM, Gary Thompson wrote:
I think a>valid< validity checking program will find errors when the
user presses Enter after parameter entry and prior to the command
processing program being called....

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
phil.seay@xxxxxxx
Sent: Thursday, February 09, 2012 11:27 AM
To: midrange-l@xxxxxxxxxxxx
Subject: RE: Can a Command Validity Check program be an RPG ILE
program

Hi John,

I think a validity checking program will find the error at compile time.
A command processing program will find the error at run time.

--
Regards,
Phil

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of John Allen
Sent: Thursday, February 09, 2012 10:04 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: Can a Command Validity Check program be an RPG ILE
program

OK, I put the QMHSNDPM API in and now the command stops.

But I may have made in invalid assumption

I thought that if I had pressed F4 on the command and the validity program
found an error that the command would stay prompted and display the error
msg.
Mine returns back to a command line and displays the error message.

I wanted a way to reverse image the field where the error was found and
keep the command up on the screen.
Sort of like when Restricted values are defined in the Command and they
enter an invalid value.

Was I expecting too much?
The way it works now, I am just moving my validity checking from the
Command Processing program to a Validity checking program.
What do I gain by using the validity checking program??


Thanks

John




-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Mark Walter
Sent: Thursday, February 09, 2012 10:55 AM
To: Midrange Systems Technical Discussion
Subject: RE: Can a Command Validity Check program be an RPG ILE
program

Use the QMHSNDPM API.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of John Allen
Sent: Thursday, February 09, 2012 10:26 AM
To: MIDRANGE-L@xxxxxxxxxxxx
Subject: Can a Command Validity Check program be an RPG ILE program



Can a Command Validity Check program be an RPG ILE program



If yes, how is the SNDPGMMSG supposed to be handled in the RPG?



In my test I use QCMDEXEC to execute a SNDPGMMSG *ESCAPE parms and it
runs right through and continues on processing the command



I am just now trying to learn this process so bear with me if this is a
stupid question J.





Thanks



John



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