Re: [xsl] Can xsl:key use a globally declared variable?

["Martin Honnen martin.honnen@xxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

On 16.11.2018 16:47, Costello, Roger L. costello@xxxxxxxxx wrote:

> I declare a variable to hold the airports document:
>
> <xsl:variable name="airport-file" select="doc('airports.xml')"/>
>
> I declare an xsl:key to index the rows, using the <icao> element to identity the desired <row>:
>
> <xsl:key name="airports-with-icao" match="$airport-file/airports/row" use="icao"/>


It suffices to declare the key with the right match pattern independent 
of the document e.g.
   match="airports/row"

> In a template I declare a variable to hold the icao of the desired airport:
>
> <xsl:variable name="airport-icao" select="'KBOS'"/>
>
> I use the key() function to obtain the desired <row>:
>
> <xsl:sequence select="key('airports-with-icao', $airport-icao)" />

But you need to pass in the document (or subtree in general) you want to 
search as the third argument to the "key" function with

   key('airports-with-icao', $airport-icao, $airport-file)

if you don't want to search the document of the current context node.