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Re: Excluding an element with specific content from an

Subject: Re: Excluding an element with specific content from an <xsl:sort> call
From: "Mark Wilson" <mark@xxxxxxxxxxxx>
Date: Sat, 30 Jan 2010 19:12:59 -0800
Re:  Excluding an element with specific content from an
Thanks,
It's great so many people offer solutions. I am using XSL 2.0. The suggestion Ken offered works perfectly, but I have to say, yours surely looks interesting.
Mark
--------------------------------------------------
From: "Hermann Stamm-Wilbrandt" <STAMMW@xxxxxxxxxx>
Sent: Saturday, January 30, 2010 6:07 PM
To: <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: Excluding an element with specific content from an <xsl:sort> call


Under the assumption that 'A' only appears as length-1 string in Prefix
the following diff makes that stylesheet work on XSLT 1.0 processors:

$ diff mark.xsl mark1.xsl
10c10
<        <xsl:sort select="if( Prefix!='A' ) then Prefix else ''"/>
---
<xsl:sort select="translate(Prefix,'A','')"/>
$


Mit besten Gruessen / Best wishes,


Hermann Stamm-Wilbrandt
Developer, XML Compiler, L3
WebSphere DataPower SOA Appliances
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            "G. Ken Holman"
            <gkholman@CraneSo
            ftwrights.com>                                             To
                                      <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
            01/30/2010 10:23                                           cc
            PM
                                                                  Subject
                                      Re:  Excluding an element with
            Please respond to         specific content from an
            xsl-list@xxxxxxxx         <xsl:sort> call
             lberrytech.com









At 2010-01-30 13:05 -0800, Mark Wilson wrote:
Thanks Ken,
But it did not work.

My bad ... in my haste I neglected to think of the behaviour triggered in the "if" statement when the Prefix element is absent. When an operand of the comparison operator is the empty set, the comparison returns false.

It worked for me when I turned the expression inside out:

<xsl:sort select="if( Prefix!='A' ) then Prefix else ''"/>

Now the same '' value is used for sorting if the prefix is 'A' (the
test calculates as false) or the prefix is absent (the test defaults as
false).

I hope the illustration below helps.  Note how document order is
maintained for all records that have no prefix or the prefix is 'A',
thus proving they are being sorted with the same value.

. . . . . . . . . . . Ken

T:\ftemp>type mark.xml
<tests>
 <record>
  <order>1</order>
  <Prefix>D</Prefix>
 </record>
 <record>
  <order>2</order>
  <Prefix>A</Prefix>
 </record>
 <record>
  <order>3</order>
  <Prefix>L</Prefix>
 </record>
 <record>
  <order>4</order>
  <Prefix>A</Prefix>
 </record>
 <record>
  <order>5</order>
 </record>
 <record>
  <order>6</order>
  <Prefix>A</Prefix>
 </record>
 <record>
  <order>7</order>
 </record>
 <record>
  <order>8</order>
  <Prefix>L</Prefix>
 </record>
 <record>
  <order>9</order>
  <Prefix>D</Prefix>
 </record>
</tests>

T:\ftemp>call xslt2 mark.xml mark.xsl
<?xml version="1.0" encoding="UTF-8"?>
<tests>
   <record>
      <order>2</order>
      <Prefix>A</Prefix>
   </record>
   <record>
      <order>4</order>
      <Prefix>A</Prefix>
   </record>
   <record>
      <order>5</order>
   </record>
   <record>
      <order>6</order>
      <Prefix>A</Prefix>
   </record>
   <record>
      <order>7</order>
   </record>
   <record>
      <order>1</order>
      <Prefix>D</Prefix>
   </record>
   <record>
      <order>9</order>
      <Prefix>D</Prefix>
   </record>
   <record>
      <order>3</order>
      <Prefix>L</Prefix>
   </record>
   <record>
      <order>8</order>
      <Prefix>L</Prefix>
   </record>
</tests>
T:\ftemp>type mark.xsl
<?xml version="1.0" encoding="US-ASCII"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                version="2.0">

<xsl:output indent="yes"/>

<xsl:template match="tests">
  <xsl:copy>
    <xsl:for-each select="record">
      <xsl:sort select="if( Prefix!='A' ) then Prefix else ''"/>
      <xsl:copy-of select="."/>
    </xsl:for-each>
  </xsl:copy>
</xsl:template>

</xsl:stylesheet>

T:\ftemp>rem Done!



--
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