Re: [xsl] Keys off of variable xml source

[Karl Stubsjoen <kstubs@xxxxxxxxx>]

Thanks for all the effort here, the context of keys and how to use
them against external xml source is much clearer to me now.  This (as
usual) was a very valuable lesson!


On Apr 1, 2005 10:08 AM, Wendell Piez <wapiez@xxxxxxxxxxxxxxxx> wrote:
> Karl,
> 
> At 11:24 AM 4/1/2005, you wrote:
> >The reason for a lookup xml source is to act as a cross-reference to
> >data in the main xml source.  So, I need to reference all elements
> >who's ID = 123 but my match is expressed as a code value "abc".  The
> >code "abc" maps to 123 in my lookup.
> >So, I'm still scratching my head wondering how I might effectively put
> >the external file to use with keys, but thinking it won't work, the
> >context would strictly be of the main xml source.
> 
> source:
> <match code="abc"/>
> 
> lookup:
> <code lookup="abc" value="123"/>
> 
> in the stylesheet:
> 
> <xsl:variable name="lookup" select="document('lookup.xml')"/>
> 
> <xsl:variable name="codes" match="*" use="@lookup"/>
> 
> <xsl:template match="match">
>   <xsl:variable name="lookup-code" select="@code"/>
>   <xsl:variable name="target-id">
>     <xsl:for-each select="$lookup"/>
>       <xsl:value-of select="key('codes',$lookup-code)/@value"/>
>     </xsl:for-each>
>   </xsl:variable>
>   ... now the value '123' is available bound to $target-id
>       (as an RTF, convertible to a string) ...
> </xsl:template>
> 
> I hope that helps. It's a bit cumbersome in XSLT 1.0, but works well enough.
> 
> Cheers,
> Wendell
> 
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