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Re: Loading an external file of index
Jeni,
Thanks a lot, it works. Also, sorry for all of this because you are right,
it was in the XSLT spec.
So now, I'm happy because I have what I want ... but I have a little regret
because I dont't understand why it works.
What does means this "for-each" as soon as I use it only to load a document
? Why not only ask to load the document using an "apply-template" for
loading ? Does this "for-each" means that a processor needs to load and
reparse all keys declarations each time ?
Also, I'm a little bit curious on performances : for now the document
database is not so heavy. But let suppose, later having a 10 000 document
database with something like 100 keyref in each document.
Would an XSL transformer need to load the shared file 100 times per
document ? Even, looking at the syntax, would it need to load it, for each
keyref element, as many times as needed before finding the right key in the
shared document ?
I know this is a question of implementation but the syntax is hard to
understand if someont wants to know what it really means.
Regards,
Pierre
At 12:29 22/06/2000 +0100, you wrote:
>At 12:42 PM 6/22/00 +0200, Eric van der Vlist wrote:
> >I haven't tested it since my favorite XSLT processors is lacking key
> >support, but something like :
> >
> ><xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
> >version="1.0">
> >
> > <xsl:output method="html" indent="no"/>
> >
> > <xsl:key name="mysetofkeys"
> > match="document('../shared/shared.xml')/keybase/key"
> > use="@name"/>
> >
> > ....
> >
> ></xsl:stylesheet >
> >
> >should work from my understanding of the rec.
>
>Unfortunately, I know from struggling with some fairly recent questions
>that this doesn't work. You can't use the document() function within the
>'match' attribute of xsl:key. Instead, define the key as if the input
>document was the one with the keys in, at the top level of the stylesheet:
>
> <xsl:key name="mysetofkeys" match="/keybase/key" use="@name" />
>
>Then, when you want to use it, put the key() function within an
>xsl:for-each that has the document that holds the keys as its 'select'
>attribute:
>
> <xsl:template match="keyref">
> <xsl:variable name="keyrefname" select="@name" />
> <xsl:for-each select="document('../shared/shared.xml')">
> <b><xsl:value-of select="key('mysetofkeys', $keyrefname)/ACRONYM"
> /></b>
> </xsl:for-each>
> </xsl:template>
>
>This is kind of explained in the XSLT Recommendation at
>http://www.w3.org/TR/xslt#function-key, right at the end of that section.
>
>I hope that helps,
>
>Jeni
>
>Dr Jeni Tennison
>Epistemics Ltd, Strelley Hall, Nottingham, NG8 6PE
>Telephone 0115 9061301 • Fax 0115 9061304 • Email
>jeni.tennison@epistemics.co.uk
>
>
>
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