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Re: This could be simple, but not for me!

Subject: Re: This could be simple, but not for me!
From: "Kenny Bogoe (BogoeMD)" <kenny@xxxxxxxxx>
Date: Tue, 25 May 2004 15:12:11 +0200
bogoemd
Thanks, Andrew

This is very very close to what I need. But the city name has to be there
only once for all names like:


100, Red
    City1
        Name1
        Name10
        Name100
        ...etc

    City2
        Name4
        Name40
        ...

200, Blue
    City1
        Name2
        Name20
        ...

    City2
        Name5
        ...

300, Green
    City1
        Name3
        Name30
        Name300
        Name3000
        ...

400, Yellow
    City2
        Name6
        ...

Is that possible as well?

/Kenny


> 
>> Hi,
>> 
>> Though I have been working sometime with XSLT, I am having
>> trouble with this transformation. Anyone know how to do this?
>> The XML source is from a database and is really really huge
>> in size, so performance of the transformation is very critical...
>> 
>> 
>> <Root>
>>     <Community>
>>         <City>City1</City>
>>         <A>
>>             <B>
>>                 <Name>Name1</Name>
>>                 <Info>
>>                     <Detail no="100">Red</Detail>
>>                 </Info>
>>             </B>
>>             <B>
>>                 <Name>Name2</Name>
>>                 <Info>
>>                     <Detail no="200">Blue</Detail>
>>                 </Info>
>>             </B>
>>             <B>
>>                 <Name>Name3</Name>
>>                 <Info>
>>                     <Detail no="300">Green</Detail>
>>                 </Info>
>>             </B>
>>         </A>
>>     </Community>
>>     <Community>
>>         <City>City2</City>
>>         <A>
>>             <B>
>>                 <Name>Name4</Name>
>>                 <Info>
>>                     <Detail no="100">Red</Detail>
>>                 </Info>
>>             </B>
>>             <B>
>>                 <Name>Name5</Name>
>>                 <Info>
>>                     <Detail no="200">Blue</Detail>
>>                 </Info>
>>             </B>
>>             <B>
>>                 <Name>Name6</Name>
>>                 <Info>
>>                     <Detail no="400">Yellow</Detail>
>>                 </Info>
>>             </B>
>>         </A>
>>     </Community>
>> </Root>
>> 
>> 
>> This is the result I need to produce:
>> 
>> 
>> 100, Red
>> 
>>     City1
>>         Name1
>>     
>>     City2
>>         Name4
>>     
>>     
>> 200, Blue
>> 
>>     City1
>>         Name2
>>         
>>     City2
>>         Name5
>>         
>> 300, Green
>> 
>>     City1
>>         Name3
>>         
>> 400, Yellow
>> 
>>     City2
>>         Name6
> 
> Heres a stylesheet that will do it.  It's a grouping problem, you just
> need to group <Detail> elements by their id attibute and text content,
> then apply templates to only the first one in the group.  Check out
> jeni's site for more on grouping http://www.jenitennison.com
> 
> (I've html like tags in the output rather than whitespace so my IDE can
> tidy it for me :) You may want to replace the ancestor:: use with
> another key to help performance)
> 
> <xsl:stylesheet version="1.0"
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
> 
> <xsl:key name="details" match="Detail" use="concat(@no,'/',.)"/>
> 
> <xsl:template match="/">
> <root>
>   <xsl:apply-templates select="//Detail[generate-id() =
> generate-id(key('details',concat(@no,'/',.))[1])]"/>
> </root>
> </xsl:template>
> 
> <xsl:template match="Detail">
> <div detail="{concat(@no,', ',.)}">
>   <xsl:for-each select="key('details',concat(@no,'/',.))">
>     <span>
>       <xsl:value-of select="ancestor::Community/City"/>,<xsl:text/>
>       <xsl:value-of select="parent::Info/preceding-sibling::Name"/>
>     </span>
> </xsl:for-each>
> </div>
> </xsl:template>
> 
> </xsl:stylesheet>
> 
> 
> cheers
> andrew

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