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RE: [xsl] Select elements between others


Subject: RE: [xsl] Select elements between others
From: "Michael Kay" <mhk@xxxxxxxxx>
Date: Tue, 20 Jan 2004 12:48:58 -0000

A classic "positional grouping" problem: try a search for "XSLT
positional grouping". In XSLT 2.0 this is easily handled using
<xsl:for-each-group group-starting-at="block">. In 1.0, there are two
main approaches:

(a) apply-templates to the block elements; for each block element,
apply-templates to the items related to that block, which you can select
as

following-sibling::item[generate-id(preceding-sibling::block[1]) =
generate-id(current())]

(b) treat it as a value-based grouping exercise, using Muenchian
grouping with the generate-id of the block element as the grouping key.

Michael Kay

> -----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx 
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Joe Fawcett
> Sent: 20 January 2004 09:29
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: [xsl] Select elements between others
> 
> 
> I have received, what I consider to be, a badly designed xml 
> file: <data>
>   <block/>
>     <item>One</item>
>     <item>Two</item>
>   <block/>
>     <item>One</item>
>     <item>Two</item>
>     <item>Three</item>
>    <block/>
>     <item>One</item>
> </data>
> 
> I want to turn this into a more normal form to make it easier 
> to manage:
> 
> <data>
>   <block>
>     <item>One</item>
>     <item>Two</item>
>   </block>
>   <block>
>     <item>One</item>
>     <item>Two</item>
>     <item>Three</item>
>   </block>
>   <block>
>     <item>One</item>
>   </block>
> </data>
> 
> Thanks
> 
> Joe
> 
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