Re: [xsl] Merging like Siblings within a variable as="element()*"

[Martin Honnen <Martin.Honnen@xxxxxx>]

Alex Muir wrote:
> Hi,
>
> I've been using the following code that works based on templates to
> merge <chunk> siblings beside one another such that the following
>
> <chunk>1</chunk>
> <chunk>2</chunk>
> <notChunk>3</notChunk>
> <chunk>4</chunk>
> <chunk>5</chunk>
>
> would be merged to
>
> <chunk>12</chunk>
> <notChunk>3</notChunk>
> <chunk>45</chunk>
>
> Here is the code:
> <xsl:template match="chunk" priority="1">
>     <xsl:copy>
>       <xsl:copy-of select="@*"/>
>       <xsl:copy-of select="text()"/>
>       <xsl:apply-templates
>         select="following-sibling::*[1][self::chunk]"
>         mode="more"/>
>     </xsl:copy>
>   </xsl:template>
>
>   <xsl:template match="chunk[preceding-sibling::*[1][self::chunk]]"
> priority="2"/>
>
>    <xsl:template match="chunk" mode="more">
>     <xsl:copy-of select="text()"/>
>     <xsl:apply-templates
>        select="following-sibling::*[1][self::chunk]"
>       mode="more"/>
>   </xsl:template>
>
>
> This works great if I'm applying the templates to an xml file however
> I'm interested to have the chunks within a <xsl:variable
> name="content" as="element()*> and then merge them and output them and
> I'm not sure how to go about merging the like siblings within a
> variable.
>
> Any suggestions are highly appreciated?

The as="element()*" suggests you are using XSLT 2.0, then I am 
astonished you are not using xsl:for-each-group group-adjacent from the 
beginning.
Are you using XSLT 2.0? Can't you use
  <xsl:for-each-group select="$your-variable" 
group-adjacent="boolean(self::chunk)">
     <xsl:choose>
       <xsl:when test="current-grouping-key()">
         <chunk><xsl:value-of select="current-group()" 
separator=""/></chunk>
       </xsl:choose>
       <xsl:otherwise>
         <xsl:copy-of select="current-group()"/>
       </xsl:otherwise>
     </xsl:choose>
  </xsl:for-each-group>

--

	Martin Honnen
	http://msmvps.com/blogs/martin_honnen/