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Re: Position() vs counter variable

Subject: Re: Position() vs counter variable
From: António Mota <amsmota@xxxxxxxxx>
Date: Mon, 4 Apr 2005 20:22:04 +0100
xsl counter var
And of course, there are not such thing as a "counter variable"...

On Apr 4, 2005 8:18 PM, Brian Chrisman <incubus@xxxxxxxxxxxxxx> wrote:
> On Mon, Apr 04, 2005 at 03:07:53PM -0400, Maria Amuchastegui wrote:
> > My data contains a series of tables that I need to number consecutively,
> > i.e. 1, 2, 3. I want to do this using the position() property. However,
> > because the position is relative to the parent node, the numbering is
> > restarting whenever there is a new parent node, so I get: 1, 2, 1. Is there
> > a way to do this using position(), or do I have to set up a counter
> > variable?
> 
> position() isn't really 'relative to the parent node'.
> It's relative to the list of nodes selected by a particular
> select="" attribute.
> 
> Here you have a for-each selecting the Section elements
> of a particular type.  The position() will tell you what
> the order is among those selected Section elements.
> 
> What you are probably looking for is something like
> count(preceding-sibling::Section) instead of position() to get
> the number of Section elements occuring prior to the current
> node..
> 
> 
> >
> > Here is the XSL:
> >
> > <?xml version="1.0" encoding="UTF-8"?>
> > <xsl:stylesheet version="1.0"
> > xmlns:xsl="http://www.w3.org/1999/XSL/Transform
> > <http://www.w3.org/1999/XSL/Transform> "
> > xmlns:fo="http://www.w3.org/1999/XSL/Format
> > <http://www.w3.org/1999/XSL/Format> ">
> >  <xsl:output method="html"/>
> >  <xsl:template match="/">
> >   <html>
> >    <body>
> >     <xsl:apply-templates select="myXMLData"/>
> >    </body>
> >   </html>
> >  </xsl:template>
> >  <xsl:template match="myXMLData">
> >   <xsl:apply-templates select="//BTN"/>
> >  </xsl:template>
> >  <xsl:template match="//BTN">
> >   <b><xsl:value-of select="@number"/></b>
> >   <xsl:for-each select="Section[@type='Detail']">
> >    <table border="1">
> >     <th colspan="6" align="left">
> >      This is table <xsl:value-of select="position()"/>.
> >     </th>
> >     <tr>
> >      <th>ID </th>
> >      <th>Date </th>
> >      <th>Location </th>
> >      <th>Number </th>
> >      <th>Duration</th>
> >      <th>Charges </th>
> >     </tr>
> >     <xsl:apply-templates select="ServiceHeader"/>
> >    </table>
> >    <br/>
> >   </xsl:for-each>
> >  </xsl:template>
> >  <xsl:template match="ServiceHeader">
> >   <xsl:if test="@group != '' ">
> >    <tr>
> >     <td colspan="6"><xsl:value-of select="@group"/></td>
> >    </tr>
> >   </xsl:if>
> >   <xsl:apply-templates select="message"/>
> >  </xsl:template>
> >  <xsl:template match="message">
> >   <tr>
> >    <td><xsl:value-of select="id"/></td>
> >    <td><xsl:value-of select="date"/></td>
> >    <td><xsl:value-of select="location"/></td>
> >    <td><xsl:value-of select="number"/></td>
> >    <td><xsl:value-of select="duration"/></td>
> >    <td><xsl:value-of select="charges"/></td>
> >   </tr>
> >  </xsl:template>
> > </xsl:stylesheet>
> >
> >
> > And here is the XML:
> >
> > <?xml version="1.0" encoding="UTF-8"?>
> > <myXMLData xmlns="">
> >  <BTN number="635 5669">
> >   <Section number="400" type="Detail" subHead1="Long distance calls"
> > subHead2="">
> >    <ServiceHeader group="">
> >     <message>
> >      <id>1-01</id>
> >      <date>2005-04-23</date>
> >      <location>Quebec QC</location>
> >      <number>418 683 1234</number>
> >      <duration>1</duration>
> >      <charges>0.43</charges>
> >      <savings>.043</savings>
> >      <amount/>
> >     </message>
> >     <message>
> >      <id>1-02</id>
> >      <date>2005-04-28</date>
> >      <location>Montreal QC</location>
> >      <number>514 485 6611</number>
> >      <duration>2</duration>
> >      <charges>3.44</charges>
> >      <savings/>
> >      <amount/>
> >     </message>
> >    </ServiceHeader>
> >   </Section>
> >   <Section number="420" type="Summary"/>
> >   <Section number="430c" type="Detail" subHead1="Advantage Per Call"
> > subHead2="">
> >    <ServiceHeader group="Canada">
> >     <message>
> >      <id>1-06</id>
> >      <date>2005-05-06</date>
> >      <location>Collingwood ON</location>
> >      <number>705 445 1030</number>
> >      <duration>1.4</duration>
> >      <charges>5.01</charges>
> >      <savings/>
> >      <amount/>
> >     </message>
> >     <message>
> >      <id>1-07</id>
> >      <date>2005-04-12</date>
> >      <location>Erin ON</location>
> >      <number>519 833 2380</number>
> >      <duration>1.1</duration>
> >      <charges>0.78</charges>
> >      <savings/>
> >      <amount/>
> >     </message>
> >    </ServiceHeader>
> >   </Section>
> >   <Section number="450c" type="Summary" subHead1="" subHead2=""/>
> >  </BTN>
> >  <BTN number="635 5670">
> >   <Section number="400" type="Detail" subHead1="Long distance calls"
> > subHead2="">
> >    <ServiceHeader group="">
> >     <message>
> >      <id>1-12</id>
> >      <date>2005-04-08</date>
> >      <location>Edmonton AB</location>
> >      <number>780 496 8200</number>
> >      <duration>3</duration>
> >      <charges>0.25</charges>
> >      <savings/>
> >      <amount/>
> >     </message>
> >     <message>
> >      <id>1-13</id>
> >      <date>2005-04-15</date>
> >      <location>Halifax NS</location>
> >      <number>902 490 6277</number>
> >      <duration>5</duration>
> >      <charges>1.01</charges>
> >      <savings/>
> >      <amount/>
> >     </message>
> >    </ServiceHeader>
> >   </Section>
> >   <Section number="420" type="Summary"/>
> >  </BTN>
> > </myXMLData>

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