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 

> -----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx 
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Matts Isuls
> Sent: 11 April 2003 06:32
> To: 'xsl-list@xxxxxxxxxxxxxxxxxxxxxx'
> Subject:  Grouping is not working that great over here
> 
> 
> Hi
> 
> Having problems grouping (first timer). Someone please help 
> me out of this darkness.
> 
> thanks,
> Matts Isuls
> 
> 
> 
> I get this:
> 
> ------
> 20030404::1
> 20030405::2
> ------
> ::0
> 20030101::2
> ::0
> ------
> 20030202::2
> 20030303::1
> ------
> ::0
> ::0
> ------
> ::0
> ::0
> 
> but would like to get this:
> ------
> 20030404::1
> 20030405::2
> ------
> 20030101::2
> 20030404::1
> 20030405::2
> ------
> 20030202::2
> 20030303::1
> 20030404::1
> ------
> 20030404::1
> 20030405::2
> ------
> 20030404::1
> 
> ----------
> ---XSL----
> ----------
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <xsl:stylesheet version="1.0" 
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
> <!-- leave payment nodes without date out -->
> <xsl:key name="mkey" match="payments/payment[date]" 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"?>
> <!-- <date> in <payment> may be missing -->
> <!-- normaly there is more data here but cut that out --> <parcels>
>         <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>
>                                 <amount>449</amount>
>                         </payment>
>                         <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>
>                                 <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>
>                                 <amount>1</amount>
>                         </payment>
>                         <payment>
>                                 <date>20030404</date>
>                                 <amount>1</amount>
>                         </payment>
>                         <payment>
>                                 <date>20030405</date>
>                                 <amount>1</amount>
>                         </payment>
>                         <payment>
>                                 <amount>1</amount>
>                         </payment>
>                         <payment>
>                                 <date>20030405</date>
>                                 <amount>1</amount>
>                         </payment>
>                 </payments>
>         </parcel>
>         <parcel>
>                 <payments>
>                         <payment>
>                                 <amount>1</amount>
>                         </payment>
>                         <payment>
>                                 <date>20030404</date>
>                                 <amount>1</amount>
>                         </payment>
>                         <payment>
>                                 <amount>1</amount>
>                         </payment>
>                 </payments>
>         </parcel>
> </parcels> 
> 
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
> 


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list