Re: [xsl] Keeping comments with relevant node when shorting nodes

[Mike Blake-Knox <mikebk824@xxxxxxxxx>]

All,

I was impressed to receive three different ways of solving my problem.

I started with Wendell's then added a sort (in-place). I then realised
that I didn't need to actually put the comments inside the output N
elements and used copy-of in the Ns/N template to generate them before
the N elements.

Thanks very much.

Here's the resulting xslt code in case it helps anyone else:

<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<xsl:output  indent="yes" method="xml"/>

<xsl:template match="node() | @*">
   <xsl:copy>
       <xsl:apply-templates select="@* | node()"/>
   </xsl:copy>
</xsl:template>              

<xsl:key name="comments-by-owner" match="comment() | text()"
use="generate-id(following-sibling::*[1])"/>

<xsl:template match="Ns/child::text()|N/child::text()">
</xsl:template>                    

<xsl:template match="Ns">
    <xsl:copy>
        <xsl:apply-templates select="N">
       <xsl:sort select="@name"/>
        </xsl:apply-templates>
    </xsl:copy>
</xsl:template>

<xsl:template match="Ns/N">
   <xsl:copy-of select="key('comments-by-owner',generate-id())"/>
   <xsl:copy>
 <xsl:copy-of select="@*"/>
 <xsl:apply-templates select="node()"/>
   </xsl:copy>
</xsl:template>

</xsl:stylesheet>

Mike




On Fri, 14 Jan 2005 18:13:16 -0500, Wendell Piez
<wapiez@xxxxxxxxxxxxxxxx> wrote:
> Hi Mike,
> 
> Keys are useful for this kind of grouping in XSLT 1.0.
> 
> I've never retrieved comments with a key, but that doesn't make it impossible:
> 
> <xsl:key name="comments-by-owner" match="comment()"
> use="generate-id(following-sibling::*[1])"/>
> 
> This key will retrieve all the comments that precede a given element
> (sibling), except those that also precede an earlier element.
> 
> Then when you have
> 
> <!-- comment 1 -->
> <!-- comment 2 -->
> <!-- comment 3 -->
> <node/>
> <!-- comment 4 -->
> <!-- comment 5 -->
> <node/>
> 
> <xsl:template match="node">
>   <xsl:copy>
>     <xsl:copy-of select="key('comments-by-owner',generate-id())"/
>   </xsl:copy>
> </xsl:template>
> 
> would move the comments that "belong" to each node, inside it:
> 
> <node>
>   <!-- comment 1 -->
>   <!-- comment 2 -->
>   <!-- comment 3 -->
> </node>
> <node>
>   <!-- comment 4 -->
>   <!-- comment 5 -->
> </node>
> 
> This uses the key-based idiom for positional grouping you'll find
> documented at www.jenitennison.com (which we use typically to create
> hierarchies out of flat structures -- as I've done in the example above).
> 
> XSLT 2.0 has nice grouping constructs you can use for this: look Ma, no keys.
> 
> Cheers,
> Wendell
> 
> At 03:32 PM 1/14/2005, you wrote:
> >That sorts nicely but unfortunately, we have several comments in front
> >of some node.
> >
> >I haven't been able to come up with a method of grouping the comments
> >with their associated nodes. Would you have any suggestions?
> >
> >The current xsl is:
> >
> ><?xml version="1.0" encoding="UTF-8"?>
> ><xsl:stylesheet version="1.0"
> >xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
> ><xsl:output indent="yes" method="xml"/>
> >
> ><xsl:template match="node() | @*">
> ><xsl:copy>
> ><xsl:apply-templates select="@* | node()"/>
> ></xsl:copy>
> >    </xsl:template>
> >
> >  <xsl:template match="Ns">
> >      <xsl:copy>
> >          <xsl:apply-templates select="N">
> >             <xsl:sort select="@name"/>
> >        </xsl:apply-templates>
> >      </xsl:copy>
> ></xsl:template>
> >
> ><xsl:template match="N">
> ><xsl:copy-of
> >select="preceding-sibling::node()[normalize-space()][1][self::comment()]
> >"/>
> ><xsl:copy-of select="."/>
> ></xsl:template>
> >
> ></xsl:stylesheet>
> 
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> 


-- 
Mike Blake-Knox