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RE: [xsl] in XPath
Subject: RE: [xsl] <xsl:number> in XPath From: "Michael Kay" <mike@xxxxxxxxxxxx> Date: Thu, 9 Dec 2004 15:35:07 -0000 |
> <xsl:number level="any" count="*" from="parent"/> The XSLT 2.0 specification defines xsl:number in terms of equivanent XPath expressions. However, because "count" and "from" are XSLT patterns, it's a bit complicated to do this in the general case. For this particular case, however, if the context node is an element named C, then this xsl:number call returns a text node containing the value of: count( (preceding::node()|ancestor-or-self::node())[self::C] [not(. << $S/(preceding::node()|ancestor::node())[self::parent][last()])] ) unless that is zero, in which case xsl:number returns a zero-length text node. If you leave out the from="parent", and if a C element cannot have any C ancestors, then the expression reduces to count(preceding::C)+1. Michael Kay http://www.saxonica.com/
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