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  1.  Home
  2. RPG400-L
  3. January 2008

RE: Checking for dupe key on WRITE

hopefully if you're writing to a file (or updating) you're using your only
single unique access path (you do only have one, right? if not... ugh!)


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]On Behalf Of Ken Slaugh
Sent: Wednesday, January 09, 2008 12:34 PM
To: RPG programming on the AS400 / iSeries
Subject: RE: Checking for dupe key on WRITE


I tend to disagree :)

The duplicate key may not even occur in the file you are maintaining but
instead may occur in a related logical file. Also timing between the
seek and the write may be critical when multiple jobs maintain the data.




- Ken
(707) 795-1512 x118

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Bradley V. Stone
Sent: Wednesday, January 09, 2008 10:07 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Checking for dupe key on WRITE

I would tend to agree here, but use a CHAIN instead. I would say
99.9999% of the time I am going to write a record with a possibly
duplicate key, I'm going to want to UPDATE if it's found, WRITE if it's
not. :)

Brad
www.bvstools.com



-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]On Behalf Of
GUY_HENZA@xxxxxxxxxxxxxx
Sent: Wednesday, January 09, 2008 12:01 PM
To: RPG programming on the AS400 / iSeries
Subject: RE: Checking for dupe key on WRITE



As "a matter of style", why not SETLL and not do the write if equal or

found?

Regards,

Guy





"Kurt Anderson"

<kjanderson@highsm To: "RPG
programming on the AS400 / iSeries" <rpg400-l@xxxxxxxxxxxx>
ith.com> cc:

Sent by: Subject: RE:
Checking for dupe key on WRITE
rpg400-l-bounces@m

idrange.com





01/09/2008 12:55

PM

Please respond to

RPG programming on

the AS400 /

iSeries









Just a matter of style, but I tend to prefer something like this:

Monitor;
Write Rec;
On-Error DuplicateKey;
// do something
EndMon;

Of course you don't need to specify the status with the On-Error
opcode if you'd rather have a catch-all.

Kurt Anderson
Application Developer
Highsmith Inc

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx
Sent: Wednesday, January 09, 2008 10:46 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Checking for dupe key on WRITE

ILE RPG Reference manual available at InfoCenter.

D NoError C 0
D EndOfFile C 11
D RecordNotFound C 12
D DuplicateKey C 1021
D ReferentialErr C 1022
D TriggerErrBef C 1023
D TriggerErrAft C 1024
D YouAreOld C 1031
D FileClosed C 1211
D FileOpen C 1215
D ImpOpenCloseEr C 1216
D ExpOpenCloseEr C 1217
D RecAlreadyLock C 1218
D UpdBeforeRead C 1221
D RefErrOnAlloc C 1222
D PermIOErr C 1251
D JobEndingCtl C 1282

Rob Berendt
--
Group Dekko Services, LLC
Dept 01.073
PO Box 2000
Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





"Thompson, Glenn" <gthompson@xxxxxxxxxxxxx> Sent by:
rpg400-l-bounces@xxxxxxxxxxxx
01/09/2008 11:34 AM
Please respond to
RPG programming on the AS400 / iSeries <rpg400-l@xxxxxxxxxxxx>


To
"RPG programming on the AS400 / iSeries" <rpg400-l@xxxxxxxxxxxx> cc

Subject
RE: Checking for dupe key on WRITE






Ken,

Where can I find listing of "descriptive errors"?

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Ken Slaugh
Sent: Wednesday, January 09, 2008 10:30 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Checking for dupe key on WRITE


Here's how I checked for the Dup using %ERROR and Program Status
DS...

d SDS
d qExceptD 91 170


* Check for duplicate key detected
c if %subst(qExceptD:1:13)
c = 'Duplicate key'


- Ken
(707) 795-1512 x118

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Thompson, Glenn
Sent: Wednesday, January 09, 2008 8:23 AM
To: RPG programming on the AS400 / iSeries
Subject: Checking for dupe key on WRITE

I'm trying to get away from indicators. I'm using %eof now and want
to
do file I/O error checking with %error.





When I perform a write and a record exists I'm assuming I'll check
for %error. How do I determine exactly what error I'm encountering?

How
do
I know if it's a duplicate record or some other error?





Glenn Thompson

Senior Analyst







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