Subject: RE: [xsl] find Unique Nodes based on 2 Attributes From: "Michael Kay" <mhkay@xxxxxxxxxxxx> Date: Mon, 22 Oct 2001 15:04:10 +0100 |
> XSL command > <xsl:apply-templates select="Subscriber[not > (@language=following::Subscriber/@language)]"/> > > I'd like to be able to select unique nodes based on both the > language and > alertmethod attributes. > > Does anyone have any idea how you might change this command > to allow it > select a unique node based on both language and alertmethod > attributes. > It's not trivial because the above method relies on the "implicit existential semantics" of "=", which only applies when doing a simple comparison between two node-sets. The best approach is to switch to Muenchian grouping, as described on www.jenitennison.com/xslt/grouping (or of course in my XSLT Programmer's Reference 2nd edition) Mike Kay XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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