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Re: Grouping within a group?

From: Martin Honnen <mahotrash@-----.-->
To: NULL
Date: 7/3/2009 2:08:00 PM
Chris Gannon wrote:

> This is my guess at the XML file structure. I'm only including 2
> different structures and only a few rows...
> <!-- Structure 1 -->
> <dsQueryResponse>
> 	<Rows>
> 		<Row>
> 			<Meeting_x0020_Date>2009-08-27T05:00:00Z</Meeting_x0020_Date>
> 			<bsc_SiteProperties>New Hire Orientation</bsc_SiteProperties>
> 			<_x0023_>1</_x0023_>
> 			<Task>Reserve room</Task>
> 		<Row>

That is not even well-formed XML, you need </Row> to close the element.

Assuming the XML input is

<dsQueryResponse>
	<Rows>
		<Row>
			<Meeting_x0020_Date>2009-08-27T05:00:00Z</Meeting_x0020_Date>
			<bsc_SiteProperties>New Hire Orientation</bsc_SiteProperties>
			<_x0023_>1</_x0023_>
			<Task>Reserve room</Task>
		</Row>
		<Row>
			<Meeting_x0020_Date>2009-08-27T05:00:00Z</Meeting_x0020_Date>
			<bsc_SiteProperties>New Hire Orientation</bsc_SiteProperties>
			<_x0023_>2</_x0023_>
			<Task>Place order with Catering</Task>
		</Row>
		<Row>
			<Meeting_x0020_Date>2009-08-27T05:00:00Z</Meeting_x0020_Date>
			<bsc_SiteProperties>New Hire Orientation</bsc_SiteProperties>
			<_x0023_>3</_x0023_>
			<Task>Request A/V equipment</Task>
		</Row>
		<Row>
			<Meeting_x0020_Date>2009-08-27T05:00:00Z</Meeting_x0020_Date>
			<bsc_SiteProperties>Welcome Back Session</bsc_SiteProperties>
			<_x0023_>1</_x0023_>
			<Task>Prepare invitation list</Task>
		</Row>
		<Row>
			<Meeting_x0020_Date>2009-08-27T05:00:00Z</Meeting_x0020_Date>
			<bsc_SiteProperties>Welcome Back Session</bsc_SiteProperties>
			<_x0023_>2</_x0023_>
			<Task>Contact invitees</Task>
		</Row>
		<Row>
			<Meeting_x0020_Date>2009-08-27T05:00:00Z</Meeting_x0020_Date>
			<bsc_SiteProperties>Welcome Back Session</bsc_SiteProperties>
			<_x0023_>3</_x0023_>
			<Task>Invite guest speaker</Task>
		</Row>
		<Row>
			<Meeting_x0020_Date>2009-09-04T05:00:00Z</Meeting_x0020_Date>
			<bsc_SiteProperties>General Assembly</bsc_SiteProperties>
			<_x0023_>1</_x0023_>
			<Task>Reserve Auditorium</Task>
		</Row>
		<Row>
			<Meeting_x0020_Date>2009-09-04T05:00:00Z</Meeting_x0020_Date>
			<bsc_SiteProperties>General Assembly</bsc_SiteProperties>
			<_x0023_>2</_x0023_>
			<Task>Compile Multi-Media files</Task>
		</Row>
		<Row>
			<Meeting_x0020_Date>2009-09-04T05:00:00Z</Meeting_x0020_Date>
			<bsc_SiteProperties>General Assembly</bsc_SiteProperties>
			<_x0023_>3</_x0023_>
			<Task>Notify attendees</Task>
		</Row>
	</Rows>
</dsQueryResponse>

then this XSLT 1.0 stylesheet

<xsl:stylesheet
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   version="1.0">

   <xsl:output method="html" indent="yes"/>

   <xsl:key name="k1" match="Row" use="Meeting_x0020_Date"/>
   <xsl:key name="k2" match="Row" use="concat(Meeting_x0020_Date, '|', 
bsc_SiteProperties)"/>

   <xsl:template match="/">
     <html>
       <head>
         <title>Example</title>
       </head>
       <body>
         <table>
           <thead>
             <tr>
               <th>Meeting Date</th>
               <th>Meeting Details</th>
             </tr>
           </thead>
           <tbody>
             <xsl:apply-templates 
select="dsQueryResponse/Rows/Row[generate-id() = generate-id(key('k1', 
Meeting_x0020_Date)[1])]" mode="g1"/>
           </tbody>
         </table>
       </body>
     </html>
   </xsl:template>

   <xsl:template match="Row" mode="g1">
     <tr>
       <td>
         <xsl:value-of select="Meeting_x0020_Date"/>
       </td>
       <td>
         <table>
           <thead>
             <tr>
               <th>Meeting Site</th>
               <th>Details</th>
             </tr>
           </thead>
           <tbody>
             <xsl:apply-templates select="key('k1', 
Meeting_x0020_Date)[1][generate-id() = generate-id(key('k2', 
concat(Meeting_x0020_Date, '|', bsc_SiteProperties))[1])]" mode="g2"/>
           </tbody>
         </table>
       </td>
     </tr>
   </xsl:template>

   <xsl:template match="Row" mode="g2">
     <tr>
       <td>
         <xsl:value-of select="bsc_SiteProperties"/>
       </td>
       <td>
         <table>
           <thead>
             <tr>
               <th>#</th>
               <th>Task</th>
             </tr>
           </thead>
           <tbody>
             <xsl:apply-templates select="key('k2', 
concat(Meeting_x0020_Date, '|', bsc_SiteProperties))"/>
           </tbody>
         </table>
       </td>
     </tr>
   </xsl:template>

   <xsl:template match="Row">
     <tr>
       <td>
         <xsl:value-of select="_x0023_"/>
       </td>
       <td>
         <xsl:value-of select="Task"/>
       </td>
     </tr>
   </xsl:template>

</xsl:stylesheet>

uses two keys and Muenchian grouping to group the Row elements first on 
the Meeting_x0020_Date child element and then on the bsc_SiteProperties 
child element.

The output, when run against the sample shown above, is as follows:

<html>
    <head>
       <meta http-equiv="Content-Type" content="text/html; charset=utf-8">

       <title>Example</title>
    </head>
    <body>
       <table>
          <thead>
             <tr>
                <th>Meeting Date</th>
                <th>Meeting Details</th>
             </tr>
          </thead>
          <tbody>
             <tr>
                <td>2009-08-27T05:00:00Z</td>
                <td>
                   <table>
                      <thead>
                         <tr>
                            <th>Meeting Site</th>
                            <th>Details</th>
                         </tr>
                      </thead>
                      <tbody>
                         <tr>
                            <td>New Hire Orientation</td>
                            <td>
                               <table>
                                  <thead>
                                     <tr>
                                        <th>#</th>
                                        <th>Task</th>
                                     </tr>
                                  </thead>
                                  <tbody>
                                     <tr>
                                        <td>1</td>
                                        <td>Reserve room</td>
                                     </tr>
                                     <tr>
                                        <td>2</td>
                                        <td>Place order with Catering</td>
                                     </tr>
                                     <tr>
                                        <td>3</td>
                                        <td>Request A/V equipment</td>
                                     </tr>
                                  </tbody>
                               </table>
                            </td>
                         </tr>
                      </tbody>
                   </table>
                </td>
             </tr>
             <tr>
                <td>2009-09-04T05:00:00Z</td>
                <td>
                   <table>
                      <thead>
                         <tr>
                            <th>Meeting Site</th>
                            <th>Details</th>
                         </tr>
                      </thead>
                      <tbody>
                         <tr>
                            <td>General Assembly</td>
                            <td>
                               <table>
                                  <thead>
                                     <tr>
                                        <th>#</th>
                                        <th>Task</th>
                                     </tr>
                                  </thead>
                                  <tbody>
                                     <tr>
                                        <td>1</td>
                                        <td>Reserve Auditorium</td>
                                     </tr>
                                     <tr>
                                        <td>2</td>
                                        <td>Compile Multi-Media files</td>
                                     </tr>
                                     <tr>
                                        <td>3</td>
                                        <td>Notify attendees</td>
                                     </tr>
                                  </tbody>
                               </table>
                            </td>
                         </tr>
                      </tbody>
                   </table>
                </td>
             </tr>
          </tbody>
       </table>
    </body>
</html>


-- 

	Martin Honnen --- MVP XML
	http://msmvps.com/blogs/martin_honnen/


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