Re: Subfile reversing display -- RPG400-L

This works in 39 other programs, from which we may deduce that its a *doh* problem. ;)
Is this RRN of the subfile, or of the main file? I am curious why you readp 10 times to get from 10 to 1? Why not eval RRN=RRN-10, do a setll at RRN, and then reapdp until (bof) or (RRN-20)?

Still, I am betting its a *duh*. Have you done a 54 compare on that section of this program and a working program? I say this because you say you have a clonable program you use to write these new programs.

Blake.Moorcroft@xxxxxxxxxx wrote:

Hello Booth...

The subfile procedure is generically constructed so we can apply it to a number of different files (kind of like a fill-in-the-blanks options). Most of the files used are well over 2500 records in size.

I have already verified through the debug procedure that the the relative record number is set to 10 when the first record is read after a SETLL is used for record positioning, then the process does a READPE, with the RRN decrementing by one for each record that is read until the subfile is filled. A subprocedure is in place in case the subfile is only partially filled (say there are only 7 records left before hitting the BOF), in which case the procedure resets to the top of the list and reads forward. I've also tried a number of scenarios when paging back and forth to see if the RRN is not being properly set, but regrettably, it's resetting exactly as required for the paging options.

Have a good day.

Blake Moorcroft
Developer - Corporate
Russell A. Farrow Limited
1980 Ambassador Drive, PO Box 333, Windsor, Ontario N9C 3R4
Bus: 519-966-3003 ext. 566, Fax: 519-966-9870
blake.moorcroft@xxxxxxxxxx

Booth Martin <booth@xxxxxxxxxxxx> Sent by: rpg400-l-bounces@xxxxxxxxxxxx
03/30/2009 02:10 PM
Please respond to
RPG programming on the IBM i / System i <rpg400-l@xxxxxxxxxxxx>

To
RPG programming on the IBM i / System i <rpg400-l@xxxxxxxxxxxx>
cc

Subject
Re: Subfile reversing display

Standard first question: Would the whole subfile be under 2500 records if you did a load all? If so, do a load all and forget the paging business.

Now, to the issue. (sorry for the above preachment.)

It'd be my guess that the subfile is being loaded in the order the records are being read. That leads me to believe you may have a reade or a read mixed up? Perhaps the setll for the page back is not being set correctly? Or possibly when reading back 20 (or 10) records and then reading forward there is mix up?

Debug might be the quickest way to see what is happening at the beginning of the page back.

Blake.Moorcroft@xxxxxxxxxx wrote:

Hello all...

I'm running into a really weird situation and I'm wondering if anyone's ever encountered it before.

We're generating a subfile with 10 records (one page at a time, subfile size and page = 10), nothing fancy, with both regular and hidden fields.

There are no issues with writing the records themselves.

When paging down (using the roll-up), the records proceed forward 10 at
a
time in ascending sequence.

If, however, the page up key (roll down) is used, the records appear in
a
reversed order - the correct records appear, just out of sequence. I've

included an example of what's happening:

Screen - starting position:

A Record
B Record
C Record
D Record

Screen after paging down:

E Record
F Record
G Record
H Record

Screen after paging up

D Record
C Record
B Record
A Record.

If we were now to hit the page down key again, we would get

E Record
F Record
G Record
H Record

The procedure is pulling the correct records, it's just not displaying them in the proper way.

This subfile procedure is used in a number of programs. I use it any
time
we need a subfile - basically cloned code. None of the other programs that use this code are having the same issue - there are around 40 different programs using it. The logical that is used during the fill
of
this particular subfile is not unusual - a three key index with
ascending
controls on the keys - there are no omit or select functions. I have checked the logical to verify the index properties.

I've checked the clear and display of the subfile and there are no indicator issues.

I've stepped through the code with the debug procedure and watched how
it
is writing the records, verifying the contents of each record's fields
and
the relative record number associated to the record being written -
there
are no issues and the relative record number is being properly assigned.

Any ideas?

Have a good day

Blake Moorcroft
Developer - Corporate
Russell A. Farrow Limited
1980 Ambassador Drive, PO Box 333, Windsor, Ontario N9C 3R4
Bus: 519-966-3003 ext. 566, Fax: 519-966-9870
blake.moorcroft@xxxxxxxxxx

------------------------------------------------------------------------

No virus found in this incoming message.
Checked by AVG - www.avg.com Version: 8.0.238 / Virus Database: 270.11.31/2028 - Release Date:
03/28/09 07:16:00

------------------------------------------------------------------------

No virus found in this incoming message.
Checked by AVG - www.avg.com Version: 8.0.238 / Virus Database: 270.11.31/2028 - Release Date: 03/28/09 07:16:00