RE: [xsl] variables

["Michael Kay" <mike@xxxxxxxxxxxx>]

When global variables are evaluated, the context node is the root node of
the initial source document. Is the outermost element of this document
called "group"? If not, all your xsl:when conditions are going to fail.

Your use of the name "counter" for your variables makes me suspicious that
you are treating these variables as if they were mutable... but you haven't
shown enough of your stylesheet to justify this.

Michael Kay
http://www.saxonica.com/ 

> -----Original Message-----
> From: Mark Williams [mailto:mark@xxxxxxxxxxxxxxxxx] 
> Sent: 09 June 2006 11:17
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: [xsl] variables
> 
> Hi,
> 
> I'm trying to increment a paragraph number depending on 
> whether various options are true. I'm doing this by declaring 
> variables as in the following example:
> 
> - <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> version="1.0" xmlns:fo="http://www.w3.org/1999/XSL/Format";>
> - <xsl:variable name="counter2">
> - <xsl:choose>
> - <xsl:when test="group[@name='Outgoings']/council_tax=1">
>   <xsl:value-of select="2" />
>   </xsl:when>
> - <xsl:otherwise>
>   <xsl:value-of select="1" />
>   </xsl:otherwise>
>   </xsl:choose>
>   </xsl:variable>
> - <xsl:variable name="counter3">
> - <xsl:choose>
> - <xsl:when test="group[@name='Outgoings']/gas_charge=1">
>   <xsl:value-of select="$counter2+1" />
>   </xsl:when>
> - <xsl:otherwise>
>   <xsl:value-of select="$counter2" />
>   </xsl:otherwise>
>   </xsl:choose>
>   </xsl:variable>
> - <xsl:variable name="counterB">
> - <xsl:choose>
> - <xsl:when 
> test="group[@name='Tenant_Obligations']/internal_repairs=1">
>   <xsl:value-of select="2" />
>   </xsl:when>
> - <xsl:otherwise>
>   <xsl:value-of select="1" />
>   </xsl:otherwise>
>   </xsl:choose>
>   </xsl:variable>
> - <xsl:variable name="counterC">
> - <xsl:choose>
> - <xsl:when
> test="group[@name='Tenant_Obligations']/internal_decorations=1">
>   <xsl:value-of select="$counterB+1" />
>   </xsl:when>
> - <xsl:otherwise>
>   <xsl:value-of select="$counterB" />
>   </xsl:otherwise>
>   </xsl:choose>
> 
> 
> Even though I know 
> test="group[@name='Outgoings']/council_tax=1" is evaluating 
> to 1 later in the xsl (it inserts a particular paragraph of 
> text), counter2 is always evaluating to 1.
> 
> counterB, interestingly was working as expected, ie evaluating to 2.
> However, I then noticed that the group name ie 
> Tenant_Obligations was incorrectly referenced in the xsl as 
> "Tenant Obligations" (ie no underscore). When I corrected 
> this, counterB evaluates to 1 even though internal_repairs is 
> 1 and should therefore be evaluating to 2.
> 
> All this is very puzzling to me and leads me to believe that 
> my variable declarations are very very wrong.
> 
> Any help much appreciated.
> 
> Regards
> 
> Mark Williams
> 
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