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AW: [xsl] in search for more elegant XPaths


Subject: AW: [xsl] in search for more elegant XPaths
From: "Huditsch, Roman \(LNG-VIE\)" <Roman.Huditsch@xxxxxxxxxxxxx>
Date: Wed, 22 Apr 2009 15:29:47 +0200

Hi,

Thanks a lot for all the answers! Great!
Exactly what I was looking for.

thanks,
Roman


Mag. (FH) Roman Huditsch
 Teamleader XSLT-Development

Tel.: +43 (1) 534 52 - 1514
Fax: +43 (1) 534 52 - 146

Roman.Huditsch@xxxxxxxxxxxxx

LexisNexis Verlag ARD Orac GmbH & Co KG
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http://www.lexisnexis.at/

-----UrsprC<ngliche Nachricht-----

Von: David Carlisle [mailto:davidc@xxxxxxxxx]
Gesendet: Mittwoch, 22. April 2009 15:16
An: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Betreff: Re: [xsl] in search for more elegant XPaths


> I very often testing for element nodes that have character content
> with *[string-length(normalize-space(.))&gt;0]

No need to work out the length (which can be surprisingly costly for general
unicode strings) you can just do

 *[normalize-space(.)]

as the predicate is true if teh string is non empty. (Although I have a
feeling saxon for example does that rewrite for you anyway, so it may make no
difference.)


> 	<xsl:text>

You haven't specified a return type for ypur fuction but if it's intended to
be a string declaring it as as="xs:string" and using <xsl:sequence
select="'sozial'"/> rather than <xsl:text>sozial</xsl:text> saves the cost of
building a text node.

<xsl:function name="ln:getCaseType" as="xs:string>
	<xsl:param name="case" as="element()"/>
	<xsl:choose>
   <xsl:when test="matches(.,'^[LB]?SG')">
    <xsl:sequence select="'sozial'"/>
   </xsl:when>
   <xsl:when test="matches(.,'^[LB]?A(rb)?G')">
    <xsl:sequence select="'arbeit'"/>
   </xsl:when>

Those regex are a bit more lax than your tests but they need not be.

David

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