RE: Validity Checking Programs

Sounds fun... :-(

Why don't you create your own commands which will have all the
parameters you are aware of. That command's CPP will take the parameters
that you pass in, save them as needed, and then use them to call IBM's
commands.

Dave

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jonathan Mason
Sent: Thursday, July 26, 2007 8:26 AM
To: 'Midrange Systems Technical Discussion'
Subject: Validity Checking Programs

I'm in the process of trying to write a utility that will capture
which parameters were specified when a command was executed so that
they can be reused as defaults the next time the command is run for
the same object.
For example, when using the CRTPGM command for some objects I may have

binding directories specified, whilst for others I may list the
service programs and modules separately.

I thought about using Validity Checking Programs (VCP) assigned to the

particular commands that would log the parameters used in a database,
but this has raised a number of questions:

a) The documentation says that the parameters for the VCP
need to be in
the same sequence as the Command Processing Program (CPP), however
there's no documentation anywhere on the parameters accepted by any
given CPP. I can prompt the command and see the available parameters,

but there's nothing to say that - for example - whether OUTPUT(*PRINT)

passes "*PRINT" or "1"
or anything else to the CPP. I have found that by specifying two
parameters for a VCP, the first of 4 characters followed by a 1024
characters I can substring the second parameter to find the details by

trial and error. Does anybody know if there is any documentation
anywhere that shows what the CPP's are expecting?

b) Secondly, when I assign a test VCP to a command the VCP
only runs
when I prompt the command and press Enter. Is this the correct
behaviour for a VCP? I would have expected it to run every time the
command is executed.

c) Are there any API's that return compile time
information? If, for
example, I compare the DSPMOD output with the QBNRMODI system API
there are a lot pieces of information missing from the API output.

Thanks

Jonathan
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