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Focal Point    Focal Point Forums  Hop To Forum Categories  WebFOCUS/FOCUS Forum on Focal Point     [SOLVED] Variable. SET versus DEFAULT

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[SOLVED] Variable. SET versus DEFAULT
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WFtESTER
Member
posted
Hi all

'simple' question about variables:

 -SET &STARTTIME 		= HCNVRT(HGETC(8,'HYYMDS'),'(HYYMDS)',19,'A19');

works just fine

 -DEFAULT &STARTTIME 		= HCNVRT(HGETC(8,'HYYMDS'),'(HYYMDS)',19,'A19');

Why is it not possible to have this variable as DEFAULT value? Or how do I have to place the quotes?

Error message: MISSING OR MISPLACED QUOTE IN THE FOCEXEC ARGUMENT LINE: HYYMDS

thx, wft

This message has been edited. Last edited by: FP Mod Chuck,


WebFOCUS 8.1.0.5 (Server + Client)
Windows 2012 R2
BW, Oracle, Excel, PDF, HTML
 
Posts: 23 | Registered: May 28, 2013Report This Post
BabakNYC
Virtuoso
posted Hide Post
I'm actually surprised -SET works because when I tried -SET &TEST=HGETC(8,'HYYMDS'); The result was a meaningless string.

Anyways, strictly speaking, I don't know if HYYMDS is a supported format in Dialogue Manager. I found this syntax in the doc which gives you the same output.

-DEFAULT &MYSTAMP = &YYMD | ' ' | EDIT(&TOD,'99:$99:$99') ;

Maybe someone in IB tech support can research why your -SET works and the same thing fails in -DEFAULT.


WebFOCUS 8206, Unix, Windows
 
Posts: 1853 | Location: New York City | Registered: December 30, 2015Report This Post
Tony A
Expert
posted Hide Post
quote:
-SET &TEST=HGETC(8,'HYYMDS'); The result was a meaningless string

I'm not surprised because it would be an internal datetime format - which is why it was surrounded by a conversion function using HCNVRT.

Try setting the starttime to a dummy variable and then -DEFAULT &STARTTIME to that -
-SET &DummyST 		= HCNVRT(HGETC(8,'HYYMDS'),'(HYYMDS)',19,'A19');

-DEFAULT &STARTTIME = &DummyST.EVAL

-? &START



T


In FOCUS
since 1986		WebFOCUS Server 8.2.01M, thru 8.2.07 on Windows Svr 2008 R2  
WebFOCUS App Studio 8.2.06 standalone on Windows 10 
 
Posts: 5694 | Location: United Kingdom | Registered: April 08, 2004Report This Post
WFtESTER
Member
posted Hide Post
hi all, thanks for your info.

@MartinY. it is not working if you change the order (default before set, or change the variable name). you are just reading twice the set variable Wink


@Tony A, that seems to work. many thanks.

Cheers wft


WebFOCUS 8.1.0.5 (Server + Client)
Windows 2012 R2
BW, Oracle, Excel, PDF, HTML
 
Posts: 23 | Registered: May 28, 2013Report This Post
j.gross
Virtuoso
posted Hide Post
quote:
Maybe someone in IB tech support can research why your -SET works and the same thing fails in -DEFAULT.


-SET and -DEFAULT operate very differently.

  • -SET treats the right-hand side as an expression to be evaluated; the resultant value is assigned to the variable.
  • -DEFAULT treats the right-hand side as a constant -- a string to be stuffed into the variable as-is.


But .EVAL can be used to modify the line of code, before the line is parsed for execution. "&var.EVAL" in a dialog manager directive causes the line of code to be revised -- changing "&var.EVAL" to whatever string-value has been assigned to &var -- before the line is parsed for execution.

Thus,
"-DEFAULT &STARTTIME = &DummyST.EVAL"
is first scanned for .EVAL phrases, and modified accordingly, and then parsed for execution. When the execution phase takes over, the line to be parsed is something like
"-DEFAULT &STARTTIME = 10:00:59"
and &STARTTIME is given a value of "10:00:59" [unless it had already received a value be means of -SET or its equivalent].


- Jack Gross
WF through 8.1.05
 
Posts: 1925 | Location: NYC | In FOCUS since 1983 | Registered: January 11, 2005Report This Post
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