RE: Grouping with keys or xpath

Hi Uffe

> 
> Hello,
> I have achived to group my xml input(see further down) to the 
> desired output (see further down) 
> with with xsl file (see further down) using xpath, but I have 
> not manage to do the same with keys and the key function. The problem
> is that the key is global for the whole document. I only want 
> to group each articlerow in one variant at time.
> Any hint/help would be appreciated
> 
> Best regards
>  
> Uffe

You can still use the Muenchian method.

If a basic key is 
	<xsl:key name="article_posn" match="nev_article_pos" use="."/>

it can be made more specific by making the "use" part a combination of the
nev_article_pos value and the id of its parent, for example.

<xsl:key name="a_row_article_posn" 
	match="nev_article_pos" 
	use="concat(generate-id(..),'::',.)"/>

then you can get the unique nev_article_pos's per article_row like so:

<xsl:template match="article_row">
	<xsl:variable name="p_id" select="generate-id(.)"/>
	<xsl:for-each select="nev_article_posn[generate-id(.) = 
		generate-id(key('a_row_article_posn',
concat($p_id,'::',.)[1])]">
		...
	</xsl:for-each>
</xsl:template>

it's a bit of a headache to look at but it's much quicker than
preceding-sibling.

Tom

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