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  1.  Home
  2. RPG400-L
  3. October 2006

Re: Using RRN 0 to do Setll on arrival sequence file

Alan,


Which is the correct numerical sequence
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
or
1, 2, 3, 4, 5, 6, 7, 8, 9, 0


<TIC>
Yeah, I'm sorry, but when I was at school the first one was :-)
</TIC>
I see your point, I just think it's ambiguous. But then again, it wouldn't be the first time I've thought that...:-) 

Crispin.
----- Original Message ----- From: "Alan Shore" <AlanShore@xxxxxxxx> 
To: "RPG programming on the AS400 / iSeries" <rpg400-l@xxxxxxxxxxxx>
Sent: Friday, October 20, 2006 11:24 AM
Subject: Re: Using RRN 0 to do Setll on arrival sequence file



The question is :- is RRN of 0 valid? There NEVER will be an RRN of 0,
therefore what is considered the next RRN? It looks like IBM has said that
an RRN of 0 is not valid, therefore %eof.
Which is the correct numerical sequence
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
or
1, 2, 3, 4, 5, 6, 7, 8, 9, 0


Alan Shore

NBTY, Inc
(631) 244-2000 ext. 5019
AShore@xxxxxxxx

rpg400-l-bounces@xxxxxxxxxxxx wrote on 10/20/2006 10:41:42 AM:


Yes, but the manual quite clearly states that SETLL "positions a file at

the

next record that has a key or relative record number that is greater than

or

equal to the search argument (key or relative record number).

I don't think there's any argument that the SETLL was not successful, and



therefore %EOF is on after the read.

I think the question we should all be asking is why was the SETLL not
successful. The documentation quite clearly states it will position to

the

next relative record number that is greater. 1 is clearly greater than

0...


I'm with Lim here. This sounds like a misbehaving op code...

Crispin.

----- Original Message -----
From: "Alan Shore" <AlanShore@xxxxxxxx>
To: "RPG programming on the AS400 / iSeries" <rpg400-l@xxxxxxxxxxxx>
Sent: Friday, October 20, 2006 10:20 AM
Subject: RE: Using RRN 0 to do Setll on arrival sequence file


> Okay Lim, then I have to agree with what Kurt responded with. An RRN of

0,

> well no record exists, therefore (as per the IBM manual) the file is

set

> to
> end-of-file
> condition, and is positioned AT the end-of-file. From this, you

therefore

> CANNOT  use an RRN of 0.
>
>
>
> Alan Shore
>
> NBTY, Inc
> (631) 244-2000 ext. 5019
> AShore@xxxxxxxx
> rpg400-l-bounces+alanshore=nbty.com@xxxxxxxxxxxx wrote on 10/20/2006
> 10:08:18 AM:
>
>> Yes.  The first record has RRN of 1.
>>
>> -----Original Message-----
>> From: rpg400-l-bounces@xxxxxxxxxxxx
>> [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Alan Shore
>> Sent: Friday, October 20, 2006 9:11 AM
>> To: RPG programming on the AS400 / iSeries
>> Subject: RE: Using RRN 0 to do Setll on arrival sequence file
>>
>> Unfortunately you haven't really answered my question.
>> Can you physically look at the file in question? Is the first record

rrn

>> of
>> 1 or rrn of 2.
>> Sounds a stupid question, I know, but please humor me
>>
>>
>>
>> Alan Shore
>>
>> NBTY, Inc
>> (631) 244-2000 ext. 5019
>> AShore@xxxxxxxx
>>
>> rpg400-l-bounces@xxxxxxxxxxxx wrote on 10/20/2006 09:53:25 AM:
>>
>> > Yes.  Below is the actual test program.
>> > In debug mode, eof gets set to *on and eof1 gets set to *off.
>> >
>> > FBLPCUM    IF   E             DISK
>> >
>> > D eof             s               n
>> > D eof1            s               n
>> >
>> > C     0             setll     BLPCUM
>> > C                   read      BLPCUM
>> > C                   eval      eof = %eof
>> >
>> > C     1             setll     BLPCUM
>> > C                   read      BLPCUM
>> > C                   eval      eof1 = %eof
>> >
>> > C                   eval      *inlr = *on
>> >
>> > -----Original Message-----
>> > From: rpg400-l-bounces@xxxxxxxxxxxx
>> > [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Alan Shore
>> > Sent: Friday, October 20, 2006 8:52 AM
>> > To: RPG programming on the AS400 / iSeries
>> > Subject: RE: Using RRN 0 to do Setll on arrival sequence file
>> >
>> > In your file, do you have a record with rrn of 1?
>> >
>> >
>> >
>> > Alan Shore
>> >
>> > NBTY, Inc
>> > (631) 244-2000 ext. 5019
>> > AShore@xxxxxxxx
>> >
>> > rpg400-l-bounces@xxxxxxxxxxxx wrote on 10/20/2006 09:26:31 AM:
>> >
>> > > Yes.  I read the documentation and at that time I thought, and

still

>>
>> > > think, that is a wrong statement because one of the main purpose

of

>> > > setll is to set the cursor to the record that has the equal to or
>> > > the next closest key value.
>> > >
>> > > That statement seems to say that if there is no record that has

the

>> > > same key value in the file, setll will set the cursor to the end

of

>> > > the file position, which I think is a wrong statement.
>> > >
>> > > -----Original Message-----
>> > > From: rpg400-l-bounces@xxxxxxxxxxxx
>> > > [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
>> > > vhamberg@xxxxxxxxxxx
>> > > Sent: Thursday, October 19, 2006 5:38 PM
>> > > To: RPG programming on the AS400 / iSeries
>> > > Subject: RE: Using RRN 0 to do Setll on arrival sequence file
>> > >
>> > > Yes, I think it is at least recommended - I would not have used

the

>> > > %eof to test what is done here. But this from the documentation is
>> > > interesting and answers both the original question and this one:
>> > >
>> > > "If the SETLL operation is not successful (no records found
>> > > condition), the file is positioned to the end of the file."
>> > >
>> > > --
>> > > This is the RPG programming on the AS400 / iSeries (RPG400-L)
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