Re: [xsl] XPath questions: selecting from an attribute node

Cart

XML Editor - Download a Free Trial >

See What's New >

Buy Now >

[Home] [By Thread] [By Date] [Recent Entries]

Subject: Re: XPath questions: selecting from an attribute node axis and an attribute name variable
From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
Date: Fri, 30 Sep 2011 19:54:17 -0400

At 2011-09-30 16:47 -0700, Mark wrote:

Hi,
I am using XSLT 2.0. and have two questions I have been unable to resolve:

Answers below work equally well with XSLT 1.

(1) An attribute name variable: Is it possible to write <xsl:for-each select="../Stamp/Formats/@souvenir-sheet"> in such a way that @souvenir-sheet is replaced by a variable representing other attributes so that the same statement could be used to service a different specific <Formats> attribute? i.e, xsl:for-each select="../Stamp/Formats/@minisheet"> "Any" will not work, the name has to be specific.

select="../Stamp/Formats/@*[name(.)='minisheet']

... but that would be slower than:

select="../Stamp/Formats/@minisheet"

... typically one would write:

select="../Stamp/Formats/@*[name(.)=$thisAttrName]

More work would be necessary if the attributes were named with a namespace, since you wouldn't want to trigger on the prefix-qualified name.

(2) Selecting from the attribute axis: From within the context provided by the execution of xsl:for-each select="../Stamp/Formats/@souvenir-sheet"> in the <Stamp> element below , is it possible to select the element <CatNumber>'s attribute: pofis-number? i.e., <xsl:variable name="file-name" select="concat([some XPath expression?]CatNumbers/@pofis-number, '.htm')"/>
XML fragment
<Stamp>
     <CatNumbers scott-number="3040" scott-suffix="a" pofis-number="174"/>
      <Formats souvenir-sheet="174"/>
</Stamp>

document(concat(../../CatNumbers/@pofis-number,'.htm'))

The first ".." takes you from @souvenir-sheet to Formats. The second ".." takes you to Stamp. The rest are descendants.

In XPath, an attribute is not a child of its element, but the element is the attribute's parent.

I hope this helps.

. . . . . . . . . Ken

--
Contact us for world-wide XML consulting and instructor-led training
Crane Softwrights Ltd.            http://www.CraneSoftwrights.com/s/
G. Ken Holman                   mailto:gkholman@xxxxxxxxxxxxxxxxxxxx
Google+ profile: https://plus.google.com/116832879756988317389/about
Legal business disclaimers:    http://www.CraneSoftwrights.com/legal

Current Thread
XPath questions: selecting from an attribute node axis and an attribute name variable Mark - 30 Sep 2011 23:48:06 -0000 G. Ken Holman - 30 Sep 2011 23:54:35 -0000 <= Mark - 1 Oct 2011 00:00:30 -0000

<- Previous	Index	Next ->
XPath questions: selecting fr, Mark	Thread	Re: XPath questions: selectin, Mark
XPath questions: selecting fr, Mark	Date	Re: XPath questions: selectin, Mark
	Month

XML Editor - Download a 15 Day Free Trial Now >

See What's New in Stylus Studio >

Buy Stylus Studio - XML Editor - Now >