Ghost screen

Tue Oct 18 13:50:27 CDT 2016

Hi 
Just a small note of thanks,the ghost screen worked fine. Thanks for your prompt assistance. 

Best Regards 

----- Original Message -----

step 3.: "Herald Kaffka" <Herald.Kaffka at westfraser.com> 
To: "John Pickering (NORBORD)" <John.Pickering at norbord.com>, tadjodha at stlucianic.org, powerh-l at lists.sowder.com 
Sent: Thursday, 13 October, 2016 4:50:59 PM 
Subject: RE: Ghost screen 

You stole my next example. 

Code fragment in a calling screen, user has just enter a rail car ID, in our business it is unlikely, but 
Possible for a rail car to be recycled within 30 days. Check the rail car # the user has just input against the 
Order file, warn (but do not error off) if the rail car has been recently used. 
This one is referencing a table that is now in Oracle, (In Database MDS), but change that one file 
Statement and it would (and has) worked find against RMS/ISAM files. 

Note that the file is still a designer, and the only proc in this one is the initialize procedure. 

In Calling Screen 
=============================================================================================================== 

IF RAIL_CAR_ID > ' ' 
THEN RUN SCREEN MDS_LOCATION:MDS04072A.QKC & 
PASSING T-BU, T-MILL-ID, T-RAIL-CAR, & 
T-RAIL-DUP, T-DAY-30, T-ORD-ID MODE F 
IF T-RAIL-DUP = 'Y' 
THEN WARN = & 
"*W* Duplicate RAIL CAR ID used within the past 30 days..." 
============================================================================================================== 

Ghost screen running a relatively complex edit 

SET VERIFY ERROR 
;============================================================================| 
;/T/ - Ghost screen to check for duplicate RAIL CAR numbers 

;============================================================================| 
SCREEN name & 
ACTIVITIES FIND, CHANGE & 
RECEIVING & 
T-BU, & 
T-MILL-ID, & 
T-RAIL-CAR, & 
T-DUP-RAIL, & 
T-DAY-30, & 
T-ORD-ID 

; ----------------------------------- TEMPS --------------------------------| 
TEMP T-BU CHAR*2 
TEMP T-MILL-ID CHAR*2 
TEMP T-RAIL-CAR CHAR*10 
TEMP T-DUP-RAIL CHAR*1 
TEMP T-DAY-30 DATE 
TEMP T-ORD-ID CHAR*7 
TEMP T-COUNT NUM*4 

FILE ORDER_HEADER IN MDS ALIAS OH DESIGNER OPEN CLOSE 
ACCESS VIA BUSINESS_UNIT, MILL_ID, RAIL_CAR_ID & ;HGK 
USING T-BU, T-MILL-ID, T-RAIL-CAR ;HGK 

SELECT IF ORDER_ID OF OH <> T-ORD-ID AND & 
(MODE_OF_SHIPMENT OF OH = 'CL' OR & ;HGK 
MODE_OF_SHIPMENT OF OH = 'CB') ;HGK 

;-------------------------------- PROCEDURES ------------------------------| 
PROCEDURE INITIALIZE 
BEGIN 
LET T-COUNT = 0 
LET T-DUP-RAIL = "" 
WHILE RETRIEVING OH 
BEGIN 
IF DATE_STAMP GE T-DAY-30 
THEN LET T-COUNT = T-COUNT + 1 
END 

IF T-COUNT GE 1 
THEN LET T-DUP-RAIL = 'Y' 
RETURN 
END 

;================================ < BUILD > ================================ 
BUILD 

From: powerh-l-bounces+herald.kaffka=westfraser.com at lists.sowder.com [mailto:powerh-l-bounces+herald.kaffka=westfraser.com at lists.sowder.com] On Behalf Of Pickering, John (NORBORD) 
Sent: Thursday, October 13, 2016 3:42 PM 
To: tadjodha at stlucianic.org; powerh-l at lists.sowder.com 
Subject: Re: Ghost screen 

You could do this by passing in the stuff you need to edit and a flag to indicate the result of the edit. The main screen would set the stuff to be edited, call the ghost screen. The ghost screen would do the edits and set the status flag and then exit. The calling screen would then take whatever action is appropriate based on the value of the status flag. 

Sent from my Bell Samsung device over Canada's largest network. 

-------- Original message -------- 

From: tadjodha at stlucianic.org 

Date: 2016-10-13 3:30 PM (GMT-06:00) 

To: powerh-l at lists.sowder.com 

Subject: Re: Ghost screen 

Hi Thanks for the info. However if I want to do lookups on files so as to alert the user by Hiliting/Flashing/Blinking a message on the Main screen , would this help. 

Thanks 

----- Original Message -----

From: "Herald Kaffka" < Herald.Kaffka at westfraser.com > 
To: tadjodha at stlucianic.org , powerh-l at lists.sowder.com 
Sent: Thursday, 13 October, 2016 4:04:31 PM 
Subject: RE: Ghost screen 

Here’s an example, (This one is keeping accounting happy by preventing various control #’s from duplicating rather than due to a file limit, but the concepts are the same). 

Declare the screen as normal. List/define/type any passed in variables. 

po/order#’s fall out by mill-id (t-pass-mill-id), do I want a Po or order # (t-x2), return the next # to the caller in t-number (Variable Names aren’t mine, working example someone did a long time ago). 

Declare local files. Note that the only file in this one is a designer, (no find/change/browse processing in this screen, just do something the background and exit). 

Some internal procedures that do the actual “work”. 

An initialize procedure which in this case is examining the input variables and calling the correct internal procedure. 

If your processing is small, just chunk all the processing in the initialize procedure. (The initialize procedure is a good place to drive small ghosts). 

Better to have several small, tightly focused ghosts than a big “general purpose” one that’s trying to do a bunch of unrelated 

Tasks while trying to hide/autocomplete in the background. 

All the explicit lock/get/put processing is in here as this one is not doing find/preupdate/update/postupdate type flow, 

Just initialize, do it, and get out. 

If you have no need to pass information back to the caller, a simple 1 line qtp call can also work in place of a ghost screen. 

SCREEN name RECEIVING T-PASS-MILL-ID, T-X2, T-NUMBER 

TEMP T-PASS-MILL-ID CHAR*2 

TEMP T-X2 CHAR*2 

TEMP T-NUMBER ZONED*5 

FILE LAST_NUMBER_CONTROL DESIGNER 

ACCESS VIA MILL_ID USING T-PASS-MILL-ID 

PROCEDURE INTERNAL GET-NEXT-ORDER 

BEGIN 

LET T-NUMBER = 0 

WHILE T-NUMBER = 0 

BEGIN 

LOCK LAST_NUMBER_CONTROL RECORD 

GET LAST_NUMBER_CONTROL OPT 

IF ACCESSOK 

THEN BEGIN 

LET T-NUMBER = LAST_ORDER_NUMBER OF LAST_NUMBER_CONTROL + 1 

IF T-NUMBER = 99999 

THEN LET LAST_ORDER_NUMBER OF LAST_NUMBER_CONTROL = 0 

ELSE LET LAST_ORDER_NUMBER OF LAST_NUMBER_CONTROL = T-NUMBER 

PUT LAST_NUMBER_CONTROL 

END 

UNLOCK LAST_NUMBER_CONTROL 

END 

END 

PROCEDURE INTERNAL GET-NEXT-PO 

BEGIN 

LET T-NUMBER = 0 

WHILE T-NUMBER = 0 

BEGIN 

LOCK LAST_NUMBER_CONTROL RECORD 

GET LAST_NUMBER_CONTROL OPT 

IF ACCESSOK 

THEN BEGIN 

LET T-NUMBER = LAST_PO_NUMBER OF LAST_NUMBER_CONTROL + 1 

IF T-NUMBER = 99999 

THEN LET LAST_PO_NUMBER OF LAST_NUMBER_CONTROL = 0 

ELSE LET LAST_PO_NUMBER OF LAST_NUMBER_CONTROL = T-NUMBER 

PUT LAST_NUMBER_CONTROL 

END 

UNLOCK LAST_NUMBER_CONTROL 

END 

END 

PROCEDURE INITIALIZE 

BEGIN 

IF T-X2 = "OR" 

THEN DO INTERNAL GET-NEXT-ORDER 

IF T-X2 = "PO" 

THEN DO INTERNAL GET-NEXT-PO 

RETURN 

END 

BUILD 

From: powerh-l-bounces+herald.kaffka=westfraser.com at lists.sowder.com [ mailto:powerh-l-bounces+herald.kaffka=westfraser.com at lists.sowder.com ] On Behalf Of tadjodha at stlucianic.org 
Sent: Thursday, October 13, 2016 2:26 PM 
To: powerh-l at lists.sowder.com 
Subject: Ghost screen 

Does any one have examples of a Ghost screen as the 31 file limit has been reached. OpenVMS 8.3 PH 8.40G Index file system? 

Thanks 

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