Subject: Re: [xsl] Re: [xslt transform & grouping] Using the Muenchian Method? From: "Michael PG" <xrow@xxxxxxx> Date: Thu, 07 Oct 2004 12:59:02 +0000 |
From: David Carlisle <davidc@xxxxxxxxx>
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To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [xsl] Re: [xslt transform & grouping] Using the Muenchian Method?
Date: Thu, 7 Oct 2004 13:13:10 +0100
You get $ saxon filter.xml filter.xsl <?xml version="1.0" encoding="UTF-8"?> <Documents> <Document name="sub"> <Article title="1.1" info="sub" filter="food"/> </Document> <Document name="main"> <Article title="1.2" info="main" filter="food"/> <Article title="2.2" info="main" filter="food"/> </Document> <Document name="child"/> </Documents>
because of the different ways you filter. on document you allow "" but in <xsl:copy-of select="key('by-info',@info)[@filter=$filter]"/> you don't.
I think that _is_ what you want, so in your for-each,
<xsl:for-each select="Document[@filter='' or @filter=$filter]/Article[generate-id()=generate-id(key('by-info',@info)[@filter='' or @filter=$filter])]">
you want to make sure that you always have at least one eleemnt in the key that really has the filter value and not just "" so that <xsl:copy-of select="key('by-info',@info)[@filter=$filter]"/> always produces something.
you can do that by making the filters on the key() match, delete @filter='' or
<xsl:for-each select="Document[@filter='' or @filter=$filter]/Article[generate-id()=generate-id(key('by-info',@info)[@filter=$filter])]">
and you get
$ saxon filter.xml filter.xsl <?xml version="1.0" encoding="UTF-8"?> <Documents> <Document name="sub"> <Article title="1.1" info="sub" filter="food"/> </Document> <Document name="main"> <Article title="1.2" info="main" filter="food"/> <Article title="2.2" info="main" filter="food"/> </Document> </Documents>
David
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