Re: [xsl] sorting on data referenced with document()??

[Joerg Heinicke <joerg dot heinicke at gmx dot de>]

Hello Will,

you either have to statically change the context to the second document

<xsl:for-each select="document('xml2.xml')/people/person">
  <xsl:sort select="turtle"/>
  ...
</xsl:for-each>

(but I think that's not an option)

or you have to create a temporary tree with all information merged. You 
can do this either via a 2 transformations or using an extension 
function exslt:node-set(). While extension functions always have the 
disadvantage of less portability, exslt is an approach against that 
matter (http://www.exslt.org).

<xsl:variable name="persons">
  <xsl:for-each select="people/person">
    <xsl:copy>
      <xsl:copy-of select="@*"/>
      <xsl:copy-of select="*"/>
      <xsl:variable name="ownerName" select="@name"/>
      <xsl:for-each select="document('xml2.xml')">
        <xsl:copy-of select="key('turtleByOwner', $ownerName)"
      </xsl:for-each>
      <xsl:copy-of select="
    </xsl:copy>
  </xsl:for-each>
</xsl:variable>

<xsl:for-each select="exslt:node-set($persons)/person">
  <xsl:sort select="cat"/> <!-- or turtle -->
  ...
</xsl:for-each>

Other comments to your stylesheet:

Are you sure you want version="2.0"??
In the match attribute of the key, you don't need //. The key indexes 
the whole XML tree (so all turtle elements, even without //).

Regards,

Joerg

Carter, Will wrote:
> Hi,
>
> I have a sorting problem when I use xsl to combine data from 2 xml files into one html output.
>
> here is my xml file 1 (xml1.xml):
> -----------------------
> <people>
> 	<person name="george">
> 		<cat>cat-zoro</cat>
> 		<dog>dog-butch</dog>
> 		<fish>fish-jaws</fish>
> 	</person>
> 	<person name="jennifer">
> 		<cat>cat-felix</cat>
> 		<dog>dog-fido</dog>
> 		<fish>fish-moby</fish>
> 	</person>
> 	<person name="simon">
> 		<cat>cat-tom</cat>
> 		<dog>dog-scooby</dog>
> 		<fish>fish-conroy</fish>
> 	</person>
> </people>
> -----------------------
>
> here is my xml file 2 (xml2.xml):
> -----------------------
> <people>
> 	<person name="george">
> 		<turtle>turtle-greeny</turtle>
> 	</person>
> 	<person name="jennifer">
> 		<turtle>turtle-browny</turtle>
> 	</person>
> 	<person name="simon">
> 		<turtle>turtle-red</turtle>
> 	</person>
> </people>
> -----------------------
>
> here is my stylesheet:
> -----------------------
> <?xml version="1.0" encoding="ISO-8859-1"?>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; xmlns="http://www.w3.org/tr/REC-html40"; version="2.0">
> <xsl:key name="turtleByOwner" match="//turtle" use="../@name" />
> <xsl:template match="/">
> <table border="1" cellspacing="0" cellpadding="0">
> 	<xsl:for-each select="people/person">
> 	<xsl:sort select="cat"/>
> 	<tr>
> 		<td colspan="7">Person: <xsl:value-of select="@name"/></td>
> 	</tr>
> 	<tr>
> 		<td><xsl:value-of select="cat"/></td>
> 		<td><xsl:value-of select="dog"/></td>
> 		<td><xsl:value-of select="fish"/></td>
> 		<xsl:variable name="ownerName" select="@name"/>
> 		<td>
> 		<xsl:for-each select="document('xml2.xml')">
> 		<xsl:value-of select="key('turtleByOwner', $ownerName)"
> 		</xsl:for-each>
> 		</td>
> 	</tr>
> 	</xsl:for-each>
> </table>
> </xsl:template>
> </xsl:stylesheet>
> -----------------------
>
> this correctly produces (sorted by cat):
> -----------------------
> Person: jennifer 
> cat-felix   dog-fido   fish-moby   turtle-browny 
>   
> Person: simon 
> cat-tom   dog-scooby   fish-conroy   turtle-red 
>   
> Person: george 
> cat-zoro   dog-butch   fish-jaws   turtle-greeny 
> -----------------------
>
>
> but I want to sort by turtle (I want this output):
> -----------------------
> Person: jennifer 
> cat-felix   dog-fido   fish-moby   turtle-browny 
> Person: george 
> cat-zoro   dog-butch   fish-jaws   turtle-greeny 
>  
> Person: simon 
> cat-tom   dog-scooby   fish-conroy   turtle-red 
> -----------------------
>
> I changed the sort line to be:
> <xsl:sort select="turtle"/>
> but it doesn't work, my output is:
> -----------------------
> Person: george 
> cat-zoro   dog-butch   fish-jaws   turtle-greeny 
>   
> Person: jennifer 
> cat-felix   dog-fido   fish-moby   turtle-browny 
>   
> Person: simon 
> cat-tom   dog-scooby   fish-conroy   turtle-red 
> -----------------------
>
> how can I sort on the turtle column from the document reference?
>
> thanks for any ideas.
> will

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