RE: *ENTRY PLIST (was: RE: Pointer not set for location .....)

I see now.  So the %addr(parm1)=*null only applies to command processing
programs and RPGLE procedures with optional parms?



Joe Giusto II
Programmer/Analyst
Ritz Camera
Beltsville, MD
301-419-3209 x347
410-813-2812 x347

 -----Original Message-----
From:   owner-rpg400-l@midrange.com [mailto:owner-rpg400-l@midrange.com]  On
Behalf Of rob@dekko.com
Sent:   Thursday, May 31, 2001 5:26 PM
To:     RPG400-L@midrange.com
Subject:        RE: *ENTRY PLIST  (was: RE: Pointer not set for location .....)


Granted, this is definitely application dependent, but there are
applications is which you only want to pass certain parameters.  For
example, imagine the CPP called by RTVJOBA.  Notice all the parameters?  If
you don't use them, then their address is *null.  I know, I wrote a command
called RTVJOBD.  Also, people do this technique all the time, hence the
support in RPGLE for *omit.  Let's say I was a glutton for punishment and I
wrote an all encompassing date handling program.  And I call it with a
command.  The parameters might be
1)  from date
2)  to date
3)  from date format
4)  to date format
5)  days from date 1 to date 2
6)  day of the week for from date
7)  day of the week for to date
And I only pass it parameter 1 and only request back parameter 6.  (Yes,
you can do this with commands.  Again, think RTVJOBA).  In this case, what
would the value of %parms be?  And could you make a valid assumption based
on %parms?

Rob Berendt



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