Subject: Re: [xsl] Find First Descendants That Match Predicate? From: "Eliot Kimber ekimber@xxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Mon, 24 Dec 2018 22:33:34 -0000 |
Thanks--setting the $here variable was the trick I was failing to see. Cheers, E. -- Eliot Kimber http://contrext.com o;?On 12/24/18, 3:31 PM, "David Carlisle d.p.carlisle@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote: given <root> <chapter><title>C1</title> <wrapper> <wrapper> <section><title>S1</title></section> </wrapper> <section><title>S2</title> <section><title>S3</title> </section> </section> </wrapper> </chapter> </root> (I moved /chapter to the end?) and <xsl:stylesheet version="3.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:template match="chapter"> <xsl:message select=" let $here:=. return .//section[empty(ancestor::*[title] except $here/ancestor-or-self::*[title])]/title "/> </xsl:template> </xsl:stylesheet> the xpath in the message produces <title>S1</title><title>S2</title> David On Mon, 24 Dec 2018 at 21:13, Graydon graydon@xxxxxxxxx <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote: > > On Mon, Dec 24, 2018 at 08:57:40PM -0000, Eliot Kimber ekimber@xxxxxxxxxxxx scripsit: > > Using XPath 3: > [snip] > > Given a starting node, e.g., the root node (but could be any node in the hierarchy) I need to find the first titled "child" nodes, so given the chapter node I need to find S1 and S2 but not S3. > > If you meant: > > <root> > <chapter><title>C1</title> > <wrapper> > <wrapper> > <section><title>S1</title> > </section> > </wrapper> > <section><title>S2</title> > <section><title>S3</title> > </section> > </section> > </wrapper> > </chapter> > </root> > > then > //descendant::*[self::section][title][not(ancestor::*[self::section][title])] > > will give you the first titled element of the type you're looking for. > > You'll need to put the actual values for "foo" and "bar" in where there's a predicate for [self::section]; [self:foo or self::bar] > > -- Graydon
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