RE: Grouping is not working that great over here

I removed all the nodes without <date>. Still the grouping isn't working.
Updated xml/xsl below:

thanks,
Matts Isuls


Michael Kay  (11.4.2003  14:32):
>I haven't looked through this in detail, but if X has no date child,
>then X[date=$date] will always select nothing (any "=" comparison with
>an empty node-set returns false). If you want two non-existent dates to
>compare equal, force the value to a string: X[string(date)=$date] - do
>this wherever you use the date as a grouping key.
>
>Michael Kay
>Software AG
>home: Michael.H.Kay@xxxxxxxxxxxx
>work: Michael.Kay@xxxxxxxxxxxxxx 


I get this:

------ 
20030404 ::1
------ 
20030405 ::2
------ 
20030101 ::2
------ 
20030202 ::2
20030303 ::1
------ 

but would like to get this:
------ 
20030404 ::1
------ 
20030404 ::1
20030405 ::2
------ 
20030101 ::2
20030404 ::1
20030405 ::2
------ 
20030202 ::2
20030303 ::1
20030404 ::1
------ 
20030404 ::1
20030405 ::2

----------
---XSL----
----------

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:fo="http://www.w3.org/1999/XSL/Format">
<xsl:key name="mkey" match="payments/payment" use="date"/>

<xsl:template match="/">
	<xsl:apply-templates select="parcels" />
</xsl:template>
<xsl:template match="parcels">
	<xsl:apply-templates select="parcel" />
</xsl:template>

<xsl:template match="parcel">
   <br/>	------
    <xsl:for-each select="payments/payment[count(.|key('mkey',date)[1])=1]">

      <xsl:sort select="date" />
      <xsl:variable name="date" select="date" />
      <xsl:variable name="tot" 
         select="sum(../../payments/payment[date=$date]/amount)" />
			<br/><xsl:value-of select="$date" />
			::<xsl:value-of select="$tot" />
    </xsl:for-each> 
</xsl:template>
</xsl:stylesheet>

----------
--XML-----
----------

<?xml version="1.0" encoding="UTF-8"?>
<parcels>
	<parcel>
		<payments>
			<payment>
				<date>20030404</date>
				<amount>1</amount>
			</payment>
		</payments>
	</parcel>
	<parcel>
		<payments>
			<payment>
				<date>20030404</date>
				<amount>1</amount>
			</payment>
			<payment>
				<date>20030405</date>
				<amount>1</amount>
			</payment>
			<payment>
				<date>20030405</date>
				<amount>1</amount>
			</payment>
		</payments>
	</parcel>
	<parcel>
		<payments>
			<payment>
				<date>20030101</date>
				<amount>1</amount>
			</payment>
			<payment>
				<date>20030404</date>
				<amount>1</amount>
			</payment>
			<payment>
				<date>20030405</date>
				<amount>1</amount>
			</payment>
			<payment>
				<date>20030101</date>
				<amount>1</amount>
			</payment>
			<payment>
				<date>20030405</date>
				<amount>1</amount>
			</payment>
		</payments>
	</parcel>
	<parcel>
		<payments>
			<payment>
				<date>20030202</date>
				<amount>1</amount>
			</payment>
			<payment>
				<date>20030303</date>
				<amount>1</amount>
			</payment>
			<payment>
				<date>20030404</date>
				<amount>1</amount>
			</payment>
			<payment>
				<date>20030202</date>
				<amount>1</amount>
			</payment>
		</payments>
	</parcel>
	<parcel>
		<payments>
			<payment>
				<date>20030404</date>
				<amount>1</amount>
			</payment>
			<payment>
				<date>20030405</date>
				<amount>1</amount>
			</payment>
			<payment>
				<date>20030405</date>
				<amount>1</amount>
			</payment>
		</payments>
	</parcel>
</parcels>

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