RE: File Pointers

["Richard Jackson" <richardjackson@xxxxxxxxxxxxxxxxxx>]

yes.  unfortunately, the next IO operation is not preceded by a CHAIN, is in
another program and uses another ODP.  The positioning explained in your
note only applies to the next IO to the same ODP, only when preceded by a
CHAIN, and in my experience WRITE or INSERT do not leave the cursor pointing
to a defined place.

Richard Jackson
mailto:richardjackson@richardjackson.net
http://www.richardjacksonltd.com
Voice: 1 (303) 808-8058
Fax:   1 (303) 663-4325

-----Original Message-----
From: owner-rpg400-l@midrange.com [mailto:owner-rpg400-l@midrange.com]On
Behalf Of dkeck@idt.net
Sent: Friday, August 25, 2000 6:10 AM
To: RPG400-L@midrange.com
Subject: Re: File Pointers


The ILE RPG Ref manual V4R4 says ...
"When the CHAIN operation is successful, the file specified in factor 2 is
positioned such that a subsequent read operation retrieves the record
logically
following or preceding the retrieved record. When the CHAIN operation is not
completed successfully (for example, an error occurs or no record is found),
the file specified in factor 2 must be repositioned (for example, by a CHAIN
or
SETLL operation) before a subsequent read operation can be done on that
file.If
an update (on the calculation or output specifications) is done on the file
specified in factor 2 immediately after a successful CHAIN operation to that
file, the last record retrieved is updated."
-DaveK

> Small problem, is this the answer?
>
> Program A, writes a record to the order detail file using logical
LL0001LA.
> Program A, then immediately calls program B, which is passed the order
number
to
recalculate the total order amount in the detail file to update the order
header file.
Program B uses a different logical, LL0001LB, over the order detail file.
Program B, does
a CHAIN to the first record for the order, then a subsequent READE until end
of
order.
>
> QUESTION???  Where is the pointer sitting when Program B does its first
>                            CHAIN to the order detail file LL0001LB?  Is it
where the
>                            last record was written or where?
>
> Thanks for your help.
>
> Lewis
>
> Lewis Libman
> llibman@behr.com
> 714 545 7101 x2118
>


















>
> +---
> | This is the RPG/400 Mailing List!
> | To submit a new message, send your mail to RPG400-L@midrange.com.
> | To subscribe to this list send email to RPG400-L-SUB@midrange.com.
> | To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
> | Questions should be directed to the list owner/operator:
david@midrange.com
> +---
>


---------------------------------------------
This message was sent through IDT.
http://www.idt.net/


+---
| This is the RPG/400 Mailing List!
| To submit a new message, send your mail to RPG400-L@midrange.com.
| To subscribe to this list send email to RPG400-L-SUB@midrange.com.
| To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator:
david@midrange.com
+---

+---
| This is the RPG/400 Mailing List!
| To submit a new message, send your mail to RPG400-L@midrange.com.
| To subscribe to this list send email to RPG400-L-SUB@midrange.com.
| To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---