Re: [xsl] How to sort sibling elements based on attribute of child element

[Wendell Piez <wapiez@xxxxxxxxxxxxxxxx>]

Philip,

At 04:54 PM 7/6/2009, you wrote:
> <Root>
>     <Stuff>stuff</Stuff>
>     <Annotation>
>         <Comment Priority="1">my first comment</Comment>
>     </Annotation>
>     <Annotation>
>         <Comment Priority="3">my third comment</Comment>
>     </Annotation>
>     <Annotation>
>         <Comment Priority="2">my second comment</Comment>
>     </Annotation>
>     <Bother>bother</Bother>
> </Root>
>
> Using XSL 1.0 / MSXML6.0, I want to produce the Annotation elements
> sorted by @Priority, e.g.
>
> stuff
> my first comment
> my second comment
> my third comment
> bother
>
> Constraints:
>
> 1. Preceding and following elements e.g. <Stuff> and <Bother>, and
> possibly other elements, are optional in the source XML, but must be
> output in sequence wrt comments

Assuming this is the case, try

<xsl:template match select="/*">
  <xsl:apply-templates
   select="Annotation[1]/preceding-sibling::*"/>
  <xsl:apply-templates select="Annotation">
    <xsl:sort select="*/@Priority"/>
  </xsl:apply-templates>
  <xsl:apply-templates
   select="Annotation[last()]/following-sibling::*"/>
</xsl:template>

This can also be done using grouping in XSLT 2.0, which is probably 
clearer albeit no more concise.

Cheers,
Wendell


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Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
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