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RE: [xsl] matching the first following sibling


Subject: RE: [xsl] matching the first following sibling
From: "Lars Huttar" <lars_huttar@xxxxxxx>
Date: Thu, 22 Jan 2004 10:58:33 -0600

> 
> Dear All,
> 
> I have trouble with matching the first following sibling which has a
> child's value differ from the current one's.
> 
> I need my output look like this:
> 
> 3000: 9
> 5000: 5
> 4000: 8
> 
> But I can only get the first line,  3000 : 9
> 
> Here is my xslt:
> 
> <xsl:template match="ProductList">
>     <xsl:apply-templates select="Substance[position() = 1 ]" />
> </xsl:template>
> 
> <xsl:template match="Substance">
>   <xsl:value-of select = "productId"/>
>    :
>   <xsl:value-of select = "sum( num  |
> following-sibling::Substance[productId = $productId ]/num)" />

I assume you're defining the variable productId to be the value
of the productId child that is matched by the template
(i.e. the value produced by the first xsl:value-of).

>   <!--  now check if there is another unique product, if so, call this
> template recursively, but this DOES NOT work   -->
>   <xsl:apply-templates select="following-sibling::Substance[productId
> !=  ./productId and position() = 1 ]" />

Part of the problem here is that "./productId" is the same as "productId".
Both are evaluated in the context of the following-sibling::Substance
nodes. What you probably meant was
   <xsl:apply-templates
        select="following-sibling::Substance
		[productId !=  current()/productId and position() = 1 ]" />

Above where you used $productId, you have the same issue.
In both cases you could either use current()/productId, or
define a productId variable (once) and use it (both times).

(But yes, kakridge's solution is cleaner and scales much better.)

Lars

> </xsl:template>
> 
> 
> I have this xml data:
> 
> <ProductList>
>   <Substance>
>       <productId>3000</productId>
>       <num>3</num>
>    </Substance>
>   <Substance>
>       <productId>4000</productId>
>       <num>4</num>
>    </Substance>
>   <Substance>
>       <productId>3000</productId>
>       <num>3</num>
>    </Substance>
>   <Substance>
>       <productId>5000</productId>
>       <num>5</num>
>    </Substance>
>   <Substance>
>       <productId>4000</productId>
>       <num>4</num>
>    </Substance>
>   <Substance>
>       <productId>3000</productId>
>       <num>3</num>
>    </Substance>
>  </ProductList>
> 
> 
> 
> Thanks in advance for your help.
> 
> Biying Huang
> 
> 
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
> 

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



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