Re: Subfile performance question

[Charles Wilt <charles.wilt@xxxxxxxxx>]

There are three options
1) Load all subfile - the system handles rolling in either direction
2) Extending subfile - the system handles rolling back while your code
handles rolling forward
3) Page at a Time - your code handles rolling in either direction

HTH,
Charles

On Wed, Feb 17, 2010 at 1:23 PM, Tom Deskevich
<thomas.l.deskevich@xxxxxxxxxxxxx> wrote:
> I always thought that unless you were loading the whole subfile in it's load
> subroutine, you ALWAYS have to control the roll keys. If you load a page
> then drop out of the subfile load subroutine and exfmt on the subfile
> control record, and the user presses a roll key, you need to know that event
> happened so you can write the next page of the subfile. And the only way I
> know is to specify the roll keys in your DDS. You do not have to CLEAR the
> subfile on the next load, (as long as your subfile is expandable) but keep
> the relative record number accumulating.
>
> The only time that the system controls the roll keys when you specify them
> in the DDS is when the subfile has loaded the records and you are viewing
> them again.
>
> You can take TOTAL control of the roll keys by making SFLPAG and SLFSIZ the
> same. Then the subfile will never expand and you will refresh the subfile
> each time in your load subroutine.
>
> As my friend Matthew Kelly would say,  YES or YES?
>
> Tom Deskevich
>
>
>
>
>
>
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