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RE: XSLT 2.0 & Grouping for-each-group

Subject: RE: XSLT 2.0 & Grouping for-each-group
From: "Michael Kay" <mhk@xxxxxxxxx>
Date: Thu, 7 Aug 2003 09:20:48 +0100
xslt 2.0 for loop
> * Mark Brand
> 
> Hi
> 
> I have further questions on the fragments posted earlier. I 
> did try implementing both options 
> but had some questions ...
> 
> Q1. 
> <snip>
> <xsl:for-each-group select="current-group() except "." 
> 	group-starting-with="*[@StyleName='DIVISION']">
> </snip>
> 
> With this line of code, i found that it would execute (enter 
> the for-each-group
> loop) even if there wasn't a DIVISION item in the group. How 
> do I stop the loop being entered if the group-starting-with 
> entry is not in the list. I have tried an if statement after 
> the loop has been entered but it is too late then for my purposes.

This reads to me like

<xsl:if test="current-group()/*[@StyleName='DIVISION']">
  <xsl:for-each-group select="current-group() except "." 
 	group-starting-with="*[@StyleName='DIVISION']">
...
</xsl:if>

But I may have misunderstood the requirement. What do you want to happen
if there isn't a DIVISION item in the group?

> 
> Q2. 
> <snip>
>   <Part Category="{@StyleName}">
>     <xsl:copy-of select="child::node()"/>
>     <xsl:for-each-group select="current-group() except ."
>        group-starting-with="*[@StyleName=f:child(@StyleName)]">
>       <xsl:apply-templates select="."/>
> </snip>
> 
> With this piece of code from the second option where would 
> you put the closing tags, 
> where-ever i put them they would all output after everything 
> else instead of in a nested fashion.
> 
Clearly the XSLT must be well-formed XML, so the closing tags have to be
properly nested, and they will then also be properly nested in the
result document. In fact, it's impossible to output a document in which
the tags aren't properly nested! So I don't think I understand the
question.

Michael Kay


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