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How do you count and loop in XSLT.It seems a trick is required.

Posted on 2008-10-17
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Last Modified: 2013-11-18
I need to process a summary of these XML Records

<ROWSET>
   <ROW num="1">
      <CNAM>Company 1</CNAM>
      <ISSUENO>1744</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>JRH</TMRKT>
      <RESRCH>CPE</RESRCH>
      <STATUSDT>9/22/2008 10:41:59</STATUSDT>
   </ROW>
   <ROW num="2">
      <CNAM>Company 2</CNAM>
      <ISSUENO>1334</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>JRH</TMRKT>
      <RESRCH>SF</RESRCH>
      <STATUSDT>9/22/2008 10:42:33</STATUSDT>
   </ROW>
   <ROW num="3">
      <CNAM>Company 3</CNAM>
      <ISSUENO>1585</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>JRH</TMRKT>
      <RESRCH>CPE</RESRCH>
      <STATUSDT>9/22/2008 10:42:50</STATUSDT>
   </ROW>
   <ROW num="4">
      <CNAM>Company 4</CNAM>
      <ISSUENO>1569</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>JRH</TMRKT>
      <RESRCH>CPE</RESRCH>
      <STATUSDT>9/22/2008 10:43:20</STATUSDT>
   </ROW>
   <ROW num="5">
      <CNAM>Company 5</CNAM>
      <ISSUENO>9139</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>JRH</TMRKT>
      <RESRCH>CPE</RESRCH>
      <STATUSDT>9/22/2008 10:44:23</STATUSDT>
   </ROW>
   <ROW num="6">
      <CNAM>Company 6</CNAM>
      <ISSUENO>9059</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>SR</TMRKT>
      <RESRCH>CPE</RESRCH>
      <STATUSDT>9/22/2008 10:47:49</STATUSDT>
   </ROW>
   <ROW num="7">
      <CNAM>Company 7</CNAM>
      <ISSUENO>9139</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>SR</TMRKT>
      <RESRCH>AGR</RESRCH>
      <STATUSDT>9/22/2008 10:49:46</STATUSDT>
      <STATUS_WAS>A</STATUS_WAS>
   </ROW>
   <ROW num="8">
      <CNAM>Company 8</CNAM>
      <ISSUENO>9125</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>SR</TMRKT>
      <RESRCH>NP</RESRCH>
      <STATUSDT>9/22/2008 10:57:32</STATUSDT>
   </ROW>
   <ROW num="9">
      <CNAM>Company 9</CNAM>
      <ISSUENO>2052</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>SR</TMRKT>
      <RESRCH>MLA</RESRCH>
      <STATUSDT>9/22/2008 10:59:21</STATUSDT>
   </ROW>
   <ROW num="10">
      <CNAM>Company 10</CNAM>
      <ISSUENO>1585</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>SR</TMRKT>
      <RESRCH>CPE</RESRCH>
      <STATUSDT>9/22/2008 11:1:14</STATUSDT>
   </ROW>
   <ROW num="11">
      <CNAM>Company 11</CNAM>
      <ISSUENO>9152</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>SR</TMRKT>
      <RESRCH>EIM</RESRCH>
      <STATUSDT>9/22/2008 11:1:54</STATUSDT>
   </ROW>
   <ROW num="12">
      <CNAM>Company 12</CNAM>
      <ISSUENO>1569</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>SR</TMRKT>
      <RESRCH>CD</RESRCH>
      <STATUSDT>9/22/2008 11:4:1</STATUSDT>
   </ROW>
   <ROW num="13">
      <CNAM>Company 13</CNAM>
      <ISSUENO>5002</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>JRH</TMRKT>
      <RESRCH>SF</RESRCH>
      <STATUSDT>9/22/2008 11:6:18</STATUSDT>
   </ROW>
   <ROW num="14">
      <CNAM>Company 14</CNAM>
      <ISSUENO>1611</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>JRH</TMRKT>
      <RESRCH>EIM</RESRCH>
      <STATUSDT>9/22/2008 11:7:6</STATUSDT>
   </ROW>
   <ROW num="15">
      <CNAM>Company 15</CNAM>
      <ISSUENO>7108</ISSUENO>
      <STATUS>V</STATUS>
      <TMRKT>JRH</TMRKT>
      <RESRCH>CPE</RESRCH>
      <STATUSDT>9/22/2008 11:7:57</STATUSDT>
   </ROW>
</ROWSET>

I want my output to look like this after 1 transform.

<Report>
  <Item>
    <Name>JRH</Name>
    <Count>8</Count>
  </Item>
  <Item>
    <Name>SR</Name>
    <Count>7</Count>
  </Item>  
</Telemarketers>

I can't figure out the looping and counting in XSLT? Is there a simple solution.
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Question by:Marek_Zyskowski
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4 Comments
 
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Accepted Solution

by:
Geert Bormans earned 500 total points
ID: 22745333

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:key name="row" match="ROW" use="TMRKT"/>
    <xsl:output indent="yes"/>
    <xsl:template match="ROWSET">
        <Report>
            <xsl:for-each select="ROW[generate-id() = generate-id(key('row', TMRKT)[1])]">
                <Item>
                    <Name><xsl:value-of select="TMRKT"/></Name>
                    <Count><xsl:value-of select="count(key('row', TMRKT))"/></Count>
                </Item>
            </xsl:for-each>
        </Report>
    </xsl:template>
</xsl:stylesheet>

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LVL 60

Expert Comment

by:Geert Bormans
ID: 22745349
Looping in XSLT is generally simple.
You just push out the nodes using xsl:apply-templates or use an xsl:for-each

The difficulty in this little task however is looping over ROW elements with distinct TMRKT
That is grouping, for which you could use the muenchian technique, as I did in my solution,
explained remarkably well here
http://www.jenitennison.com/xslt/grouping/muenchian.html
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Author Closing Comment

by:Marek_Zyskowski
ID: 31507309
I tried the solution and it looks like it works perfectly. Thanks.
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Expert Comment

by:Geert Bormans
ID: 22757708
welcome
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