RE: test conditions (xsl:when) involving constants using saxon

Subject: RE: test conditions (xsl:when) involving constants using saxon
From: Kay Michael <Michael.Kay@xxxxxxx>
Date: Thu, 10 Jun 1999 12:38:30 +0100
SAXON 4.1 is a while ago and I'm having trouble remembering it (4.3, which
supports the latest XSLT syntax, is in the final stages of validation and

But I think what's wrong is mainly the curly brackets: for
>    <xsl:when test="[{constant(partyid)} = '0']">
>    <xsl:when test=".[constant(partyid) = '0']">

Curly brackets are used only in an attribute value template, i.e. to
substitute an expression into a string, and not in an attribute where am
expression is expected. (This is also true of the current XSLT draft).

The leading "." is necessary because (if I remember version 4.1 correctly)
it's technically a match-pattern, testing whether the current node matches
some condition.


> -----Original Message-----
> From: Smith BC (Brian) at MSXSSC [mailto:BS185791@xxxxxxxxxxxxxxxx]
> Sent: 09 June 1999 18:55
> To: 'xsl-list@xxxxxxxxxxxxxxxx'
> Subject: test conditions (xsl:when) involving constants using saxon
> I am using saxon 4.1 and I 
> am trying to use constants with 
> a test condtion as follows:
> <xsl:choose>
>    <xsl:when test="[{constant(partyid)} = '0']">
> 	 .... do stuff....       
>    </xsl:when>
>    <xsl:otherwise>
>  	.... do other stuff....                 
>    </xsl:otherwise>
> </xsl:choose>
> I get the following error: 
>     Failed while processing  input document: org.xml.sax.SAXException:
> Error in pattern [{constant{partyid)} = '0']:  Unexpected 
> token [ boeyond
> end of pattern.
> This is using the saxon notation of a constant.
> I am not sure that constant evaluations are supported
> inside of test conditions.  Has anyone else tried
> something like this?  Is there a work around that I
> am not seeing?  
> I am using Saxon to as it enables me to define my
> own tags, which I am using until more parsers 
> support extension functions.  So switching parsers
> is not an option right now (I got XT extension functions
> working, but had to find and fix a bug first, so I am waiting
> for it to stablize).
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