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Focal Point    Focal Point Forums  Hop To Forum Categories  WebFOCUS/FOCUS Forum on Focal Point     [CLOSED] SETTING DEFAULT TO NULL

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[CLOSED] SETTING DEFAULT TO NULL
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DaveZ
Gold member
posted
How do I set -DEFAULT to a null, when I do the following -DEFAULT &FromWO1 = '' it prefixes the paramater with a leading space

This message has been edited. Last edited by: Kerry,


WebFOCUS 7.7.1
Windows 2000
Output: Excel and PDF
 
Posts: 82 | Registered: October 04, 2007Report This Post
GamP
Virtuoso
posted Hide Post
In Dialog manager there is no such thing as a null value. The variable is either present or not, and if it is it contains at least a space or 0 (which to DM is the same).
Depending on how you do your prefixing, there may be a solution for this. But since you did not say how you do your prefixing, I can only guess. Suppose it is also in DM then you could use strong concat for instance. Example:
-DEFAULT &FromWO1 = ''
-SET &XYZZY = &FromWO1 || '444';
-TYPE &XYZZY


GamP
- Using AS 8.2.01 on Windows 10 - IE11.
in Focus since 1988
 
Posts: 1961 | Location: Netherlands | Registered: September 25, 2007Report This Post
jgelona
Master
posted Hide Post
If this is strictly Dialog Manager, you are stuck, but for use in TABLE, MODIFY, DEFINE FILE, or a COMPUTE statement I will usually use MISSING. For example:
-DEFAULT &FromWO1 = MISSING
-*
DEFINE FILE CAR
  SALEDT/YYMD WITH MODEL MISSING ON=
    IF COUNTY EQ 'JAPAN' THEN &FromWO1 ELSE DATECVT(&YYMD,'I8YYMD','YYMD');
END


This sets SALEDT to Null/Missing when country is JAPAN.


In FOCUS since 1985. Prod WF 8.0.08 (z90/Suse Linux) DB (Oracle 11g), Self Serv, Report Caster, WebServer Intel/Linux.
 
Posts: 975 | Location: Oklahoma City | Registered: October 27, 2006Report This Post
Waz
Expert
posted Hide Post
As GamP says, there is no NULL in Dialog Manager.

If you need to know if the &Var is set or not, then don't default it, and test for its existence with &Var.EXISTS .


Waz...

Prod:WebFOCUS 7.6.10/8.1.04Upgrade:WebFOCUS 8.2.07OS:LinuxOutputs:HTML, PDF, Excel, PPT
In Focus since 1984
Pity the lost knowledge of an old programmer!

 
Posts: 6347 | Location: 33°49'23.0"S, 151°11'41.0"E | Registered: October 31, 2006Report This Post
ABT
Master
posted Hide Post
or the old 'go around' method.

-DEFAULT &VAR = &VAR;

-IF &VAR NE 'some test here' THEN GOTO DOONETHING ELSE GOTO DOSOMEOTHERTHIGN;

-DOONETHING 
-TYPE Hello from block 1.
-GOTO DOEXIT

-DOSOMEOTHERTHIGN
-TYPE Hello from block 1.
-DOEXIT

-DOEXIT


-DEFAULT &VAR = &VAR; sets the value to something so it can be evaluated - not the same as NULL, but mayeb the best you can get. Have you tried comparing &VAR to FOC_NONE? Not sure if this work (probably not).

-IF (&VAR EQ FOC_NONE) GOTO HERE ELSE GOTO THERE;


-ABT


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Posts: 561 | Registered: February 03, 2010Report This Post
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