Re: [xsl] Find First Descendants That Match Predicate?

["Eliot Kimber ekimber@xxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

That seems too easy (

Cheers,

E.

--
Eliot Kimber
http://contrext.com


o;?On 12/25/18, 12:42 PM, "Wendell Piez wapiez@xxxxxxxxxxxxxxx"
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:

    Hi,

    How about

    .//*[title] except .//*[title]//*[title]

    ? (or the same along descendant:: )

    Cheers, Happy Solstice, etc. Wendell

    On Mon, Dec 24, 2018 at 5:34 PM Eliot Kimber ekimber@xxxxxxxxxxxx
    <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
    >
    > 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
    >     >
    >
    >
    >
    >



    --
    Wendell Piez | wendell -dot- piez -at- nist -dot- gov |
    http://www.wendellpiez.com
    pellucidliterature.org | github.com/wendellpiez |
    gitlab.coko.foundation/wendell  - pausepress.org