Re: [xsl] Muench method for two or three keys? (Sorting and Grouping)

["Joris Gillis" <roac@xxxxxxxxxx>]

Tempore 05:00:33, die 01/16/2005 AD, hinc in  
xsl-list@xxxxxxxxxxxxxxxxxxxxxx scripsit Daniel O'Donnell  
<daniel.odonnell@xxxxxxxx>:

> So what I need is a sheet that does the following:
>   a) sorts records by head
>   b) groups records so that if two subfield1's are children of heads  
> with the same content they are put in the same record
>   c) repeats the same for subfield2's

Hi,

I don't think you can use muenchian grouping for more than 1 level of  
grouping (could be wrong).
The following method starts with the muenchian method, but uses another  
algorithm for deeper hierarchy levels (the subfields). The stylesheet is  
not memory-friendly but it does output what you want:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="1.0">
<xsl:output method="xml" indent="yes"/>
<xsl:key name="headkey" match="record" use="head"/>
<xsl:key name="sub1" match="subfield1" use="../head"/>
<xsl:key name="sub2" match="subfield2" use="../subfield1"/>

<xsl:template match="index">
  <index>
    <xsl:apply-templates  
select="record[generate-id(.)=generate-id(key('headkey', head)[1])]/head">
		<xsl:sort select="."/>
	</xsl:apply-templates>
  </index>
</xsl:template>

<xsl:template match="head">
  <item><xsl:value-of select="."/>
	<xsl:if test="count(key('sub1', .)[text()])&gt;0">
		<list>
			<xsl:apply-templates select="key('sub1',  
.)[not(../preceding::record[head=current()]/subfield1=.)]">
				<xsl:sort select="."/>
			</xsl:apply-templates>
		</list>
	</xsl:if>
  </item>
</xsl:template>

<xsl:template match="subfield1[text()]">
  <item><xsl:value-of select="."/>
	<xsl:if test="count(key('sub2', .)[text()])&gt;0">
		<list>
			<xsl:apply-templates select="key('sub2',  
.)[not(../preceding::record[subfield1=current()]/subfield2=.)]">
				<xsl:sort select="."/>
			</xsl:apply-templates>
		</list>
	</xsl:if>
	<xsl:if test="count(key('sub2', .)[text()])=0">
		<xsl:apply-templates select="../locater"/>
	</xsl:if>
  </item>
</xsl:template>

<xsl:template match="subfield2[text()]">
  <item><xsl:value-of select="."/>
		<xsl:apply-templates select="../locater"/>
  </item>
</xsl:template>

<xsl:template match="locater">
    <xsl:if test="string-length()!=0">
		<xsl:text>, </xsl:text>
		<seg type="locater">
			<xsl:value-of select="."/>
		</seg>
    </xsl:if>
</xsl:template>

</xsl:stylesheet>



regards,
--
Joris Gillis (http://www.ticalc.org/cgi-bin/acct-view.cgi?userid=38041)
Vincit omnia simplicitas
Keep it simple