Re: Database Trigger Programs

["R. Bruce Hoffman, Jr." <rbruceh@xxxxxxxxxxxxx>]

-----Original Message-----
From: William Washington III <w.washington@iols.net>
To: MIDRANGE-L@midrange.com <MIDRANGE-L@midrange.com>
Date: Wednesday, August 09, 2000 8:17 PM
Subject: Re: Database Trigger Programs


>Thanks Jim and Bruce...
>
>I used to just add 2.5 times the record length of the file to the end of
the
>first 96 bytes of the first parameter of the program, but I knew there had
>to be a way to precisely grab the before and after images of the record.
>
>Bruce, do I have to add 1 to account for the offset when evaluating the
>oldPoint and newPoint data structures?  I had to do so when using
>conventional data structures for the first parameter.  (This is my
>crash-course in pointer based data structures...)
>


No, not for pointers and based data structures, the offsets are zero based.
Since the first byte of the based structure is pointed to, you add zero to
get the first byte, etc...


===========================================================
R. Bruce Hoffman, Jr.
 -- IBM Certified Specialist - AS/400 Administrator
 -- IBM Certified Specialist - RPG IV Developer

"Those who would give up essential Liberty,
  to purchase a little temporary Safety,
  deserve neither Liberty nor Safety."

     - The Papers of Ben Franklin



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