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[xsl] Sorting in A for-each-group

2007-06-20 05:15:06
Hi,

I'm doing a merge and sort transformation against a number of xml files and using for-each-group to group common structures together:

<!-- $path is the  path to the folder that contains the XML files -->
<xsl:variable name="docs" as="node()*" select="collection(concat($path, '?select=*.xml'))"/>
<xsl:variable name="divs" as="node()*" select="$docs//TEI.2/text/body/div"/>
<xsl:for-each-group select="$divs" group-by="@id">
   <div type="{current-grouping-key()}" id="{current-group()[1]/@id}">
       <xsl:apply-templates select="current-group()[1]/head"/>
       <xsl:for-each-group select="current-group()/node()" group-by="@id">
<div type="{current-group()[1]/@type}" id="{current-grouping-key()}" n="{current-group()[1]/@n}"> <!-- I want to insert a xsl:sort here so that i can sort the current-group() according to the @n -->
               <xsl:apply-templates select="current-group()[1]/head"/>
<xsl:for-each-group select="current-group()/div" group-by="@n"> <div type="{current-group()[1]/@type}" id="{current-group()[1]/@id}" n="{current-grouping-key()}"> <xsl:apply-templates select="current-group()[1]/head"/>
                        <xsl:apply-templates select="div"/>
                   </div>
               </xsl:for-each-group>
           </div>
       </xsl:for-each-group>
   </div>
</xsl:for-each-group>

currently i'm getting:

<div type="edition_title" id="PLBAT">
   <head><hi rend="b">Some text</hi></head>
   <div type="papyrus_number" id="PLBAT1" n="1">
       <head><hi rend="b">1</hi></head>
        <!-- this is from file1.xml-->
       <div type="nr" id="PLBAT1_10" n="10">
           <head><hi rend="b">10</hi></head>
           <div type="zeile" id="PLBAT1_10_-" n="-">
               <head>-</head>
<div type="entry" id="PLBAT1_10_-_BL5" n="10" part="-" vol="BL5" lang="ger" page="59">
                   <p>Some Text</p>
               </div>
           </div>
       </div>
       <!-- this is from file1.xml-->
       <div type="nr" id="PLBAT1_14" n="14">
           <head><hi rend="b">14</hi></head>
           <div type="zeile" id="PLBAT1_14_11-12" n="11-12">
               <head>11-12</head>
<div type="entry" id="PLBAT1_14_11-12_BL5" n="14" part="11-12" vol="BL5" lang="ger" page="59">
                   <p>Sone text</p>
               </div>
           </div>
       </div>
<!-- this is from file3.xml but i want it to be first because it @n is lesser than the ones above it-->
       <div type="nr" id="PLBAT1_3" n="3">
           <head><hi rend="b">3</hi></head>
           <div type="zeile" id="PLBAT1_10_-" n="-">
               <head>-</head>
<div type="entry" id="PLBAT1_10_-_BL5" n="10" part="-" vol="BL5" lang="ger" page="59">
                   <p>Some Text</p>
               </div>
           </div>
       </div>
<!-- this is from file3.xml but i want it to be first because it @n is lesser than the ones above it-->
       <div type="nr" id="PLBAT1_9" n="9">
           <head><hi rend="b">9</hi></head>
           <div type="zeile" id="PLBAT1_14_11-12" n="11-12">
               <head>11-12</head>
<div type="entry" id="PLBAT1_14_11-12_BL5" n="14" part="11-12" vol="BL5" lang="ger" page="59">
                   <p>Sone text</p>
               </div>
           </div>
       </div>
   </div>
   <div type="papyrus_number" id="PLBAT2" n="2">
       <head><hi rend="b">2</hi></head>
        <!-- this is from file2.xml-->
       <div type="nr" id="PLBAT2_7" n="7">
           <head><hi rend="b">7</hi></head>
           <div type="zeile" id="PLBAT2_7_-" n="-">
               <head>-</head>
<div type="entry" id="PLBAT2_7_-_BL5" n="7" part="-" vol="BL5" lang="ger" page="59">
                   <p>Some text</p>
               </div>
           </div>
       </div>
      <!-- this is from file2.xml-->
       <div type="nr" id="PLBAT2_14" n="14">
           <head><hi rend="b">14</hi></head>
           <div type="zeile" id="PLBAT2_14_5" n="5">
               <head>5</head>
<div type="entry" id="PLBAT2_14_5_BL5" n="14" part="5" vol="BL5" lang="ger" page="59">
                   <p>Some text</p>
               </div>
           </div>
       </div>
   </div>
   <div type="papyrus_number" id="PLBAT6" n="6">
       <head><hi rend="b">6</hi></head>
      <!-- this is from file1.xml-->
       <div type="nr" id="PLBAT6_9" n="9">
           <head><hi rend="b">9</hi></head>
           <div type="zeile" id="PLBAT6_9_24" n="24">
               <head>24</head>
<div type="entry" id="PLBAT6_9_24_BL5" n="9" part="24" vol="BL5" lang="ger" page="60">
                   <p>Some text</p>
               </div>
           </div>
       </div>
       <!-- this is from file1.xml-->
       <div type="nr" id="PLBAT6_11" n="11">
           <head><hi rend="b">11</hi></head>
           <div type="zeile" id="PLBAT6_11_1-3" n="1-3">
               <head>1-3</head>
<div type="entry" id="PLBAT6_11_1-3_BL5" n="11" part="1-3" vol="BL5" lang="ger" page="60">
                   <p>Some text</p>
               </div>
           </div>
       </div>
        <!-- this is from file1.xml-->
       <div type="nr" id="PLBAT6_13" n="13">
           <head><hi rend="b">13</hi></head>
           <div type="zeile" id="PLBAT6_13_15-16" n="15-16">
               <head>15-16</head>
<div type="entry" id="PLBAT6_13_15-16_BL5" n="13" part="15-16" vol="BL5" lang="ger" page="60">
                   <p>Some text</p>
               </div>
           </div>
           <div type="zeile" id="PLBAT6_13_56" n="56">
               <head>56</head>
<div type="entry" id="PLBAT6_13_56_BL5" n="13" part="56" vol="BL5" lang="ger" page="60">
                   <p>Some text</p>
               </div>
           </div>
       </div>
      <!-- this is from file1.xml-->
       <div type="nr" id="PLBAT6_21" n="21">
           <head><hi rend="b">21</hi></head>
           <div type="zeile" id="PLBAT6_21_8" n="8">
               <head>8</head>
<div type="entry" id="PLBAT6_21_8_BL5" n="21" part="8" vol="BL5" lang="ger" page="60">
                   <p>Some text</p>
               </div>
           </div>
       </div>
   </div>
</div>

I'm trying to use: <xsl:sort select="current-group()[1]/@n"/> after the for-each-group but i cannot get a sorted output.

How can i get a sorted output?

--
*Jeferson L. Sese*
Asiatype Incorporated
Suite 114, Columbia Tower, Ortigas Ave.,
Greenhills, Mandaluyong City 1550 Philippines

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