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Roger Powell

Subject: Newbie Xquery problem to solve
Author: Roger Powell
Date: 04 Jan 2005 12:02 PM

I copied this example from the XQuery book by Michael Brundage (Addison Wesley). Page 14, fig 1.7

I have added variable declarations (missing from the book) and a different namespace declaration.

StylusStudio gives the error message: "Variable my:n does not exist."
But my:n is declared inside the argument of my:fact -- not correct?

I also get errors if I try to declare the variable (globally) outside the argument.
The example, copied verbatim, also gives errors.

(: Sample version 1.0 :)
declare namespace my = "http://www.brunel.ac.uk/~emstrsp";
declare function my:fact($my:n as xs:integer) as xs:integer
{
if ($my:n < 2)
then 1
else $my:n * my:fact($my:n-1)
};
declare variable $ten as xs:integer := my:fact(10);
<table>{
for $i in 1 to 10
return
<tr>
<td>10!/{$i}! = {$ten div my:fact($i)}</td>
</tr>
}</table>

Thanks,
Senior Lecturer, Brunel University

(Deleted User)

Subject: Re: Newbie Xquery problem to solve
Author: (Deleted User)
Date: 04 Jan 2005 03:41 PM
Originally Posted: 04 Jan 2005 03:35 PM

Hi Roger,
what you are hitting is a bug in the XQuery processor, triggered by the
fact that the variable definition is invoking a user-defined function that
hasn't been fully constructed.
A fix for this problem will be available in the upcoming 6.1 release.

Thanks for reporting this,
Alberto

Roger Powell

Subject: Re: Newbie Xquery problem to solve
Author: Roger Powell
Date: 05 Jan 2005 04:58 AM

Many thanks to you and your daughter.

Any ideas when this update is scheduled for release?

Roger.
Senior Lecturer, Brunel University

Minollo I.

Subject: Re: Newbie Xquery problem to solve
Author: Minollo I.
Date: 05 Jan 2005 08:55 AM

6.1 is being release on 1/11.

Thanks,
Minollo

Roger Powell

Subject: Re: Newbie Xquery problem to solve
Author: Roger Powell
Date: 13 Jan 2005 07:36 AM

Thank you. V6.1 does indeed solve this XQuery problem.

That is, after I had fixed the following XQG "XQuery gotcha":
$my:n * my:fact($my:n-1)
to
$my:n * my:fact($my:n -1)

Best wishes,
Roger
Senior Lecturer, Brunel University

David Jaramillo

Subject: Re: Newbie Xquery problem to solve
Author: David Jaramillo
Date: 19 Jan 2005 08:12 AM

Where can version 6.1 be downloaded?
I'm using v6.0 Build 212i. The update manager says:
"you are currently running the latest version.."

Thanks.
David

Minollo I.

Subject: Re: Newbie Xquery problem to solve
Author: Minollo I.
Date: 19 Jan 2005 09:03 AM

If you are connected to the internet, the update manager should be telling
you that 6.1 is available; it may be a caching/proxy issue.

Anyway, the latest 6.x release is available at:
http://www.stylusstudio.com/update

Thanks,
Minollo

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