RE: Pros & Cons

No need to keep the record locked if you use RTNDTA keyword in the DSPF   
DDS:

DOW
CHAIN (no lock)
EXFMT
CHAIN (with lock)
READ (re-read display format)
UPDAT
ENDDO



 -----Original Message-----
From: Buck Calabro
Sent: Monday, October 26, 1998 17:14
To: brian; 'MIDRANGE-L@midrange.com'
Subject: RE: Pros & Cons

On Monday, October 26, 1998 7:42 PM, Tim-Bar [SMTP:timbar@blazenet.net]
wrote:
> When creating a display file for a file maintenance program, is it
> better to reference the physical file fields or create fields with
> different names? If you use different screen field names you have to
> move the file fields into those fields to display on the screen and   
then
> move the screen fields back into the file fields before updating the
> record format. This seems like a lot of extra work. Is there any reason
> to do it this way?

Record locking.

In order for the "DSPF has PF names" to operate, you need to

DOW
CHAIN
EXFMT
UPDAT
ENDDO

If the workstation operator leaves her desk for lunch with that record on   

the screen, that record is locked for an hour.

If you rename the DSPF fields, there is no need to lock the record:

DOW
CHAIN (no lock)
MOVE DB to DSPF
EXFMT
CHAIN (lock)
MOVE DSPF to DB
UPDAT
ENDDO

Buck Calabro
Commsoft, Albany, NY
mailto:mcalabro@commsoft.net

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