Re: [xsl] Sorting in A for-each-group

Thanks David this works for me, but I'm at a loss on how this happened. In my input files i have nested div elements that i want to group, so i have 3 nested for-each-group instructions to handle the grouping. The 1st for-each-group will group the 1st level div element according to their @id. Then the second for-each-group for the 2nd level div and this div elements are the one i want to sort so i assumed that this is where i need to place the sort instruction. But in your solution you placed the sort instruction in the 3rd for-each-group and it produced the correct results, this is what i'm confused about, isn't this suppose to sort the current-group in the 3rd for-each-group which is the 3rd level div elements?

--
Jeff

David Carlisle wrote:

(i left out the top level elements and started with the topmost div):
which meant the stylesheet as posted didn't select anything.
I suspect that your only problem is that 10 is sorting before 3 as it's
doing strings not numbers.
<xsl:sort data-type="number" select="@n"/>
I can't readthis xml by eye to really spot what is being sorted where
but i get:
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; xmlns:xs="http://www.w3.org/2001/XMLSchema"; exclude-result-prefixes="xs"> <xsl:strip-space elements="*"/> <xsl:output indent="yes"/> <xsl:template name="body"> <xsl:variable name="docs" as="node()*" select="document(('file1.xml','file2.xml'))"/> <xsl:variable name="divs" as="node()*" select="$docs/div"/> <xsl:for-each-group select="$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}">  <xsl:apply-templates select="current-group()[1]/head"/> <xsl:for-each-group select="current-group()/div" group-by="@n"> <xsl:sort data-type="number" select="@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> </xsl:template>

<xsl:template match="*">
  <xsl:copy-of select="."/>
</xsl:template>
</xsl:stylesheet>
$ saxon8 -it body file.xsl
<?xml version="1.0" encoding="UTF-8"?>
<div type="PLBAT" 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>
      <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>
      <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 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>
      <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>
   </div>
</div>
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