Re: [xsl] how to walk nodes

[Wendell Piez <wapiez@xxxxxxxxxxxxxxxx>]

Dmitri,

The easiest way is to do it just the way your Subject line says. To iterate 
over a set of nodes, use xsl:for-each. Although often abused, for-each is 
perfect for this kind of thing.

So:

<xsl:template match="some_node">
  <xsl:for-each select="ancestor::component">
  <!-- Walking through ancestors named 'component'.
       By default, for-each traverses the nodes in document order -->
    <xsl:if select="position() &gt; 1">
      <!-- add a '/' delimiter in front of all steps but the first one -->
      <xsl:text>/</xsl:text>
    </xsl:if>
    <xsl:value-of select="@name"/>
  </xsl:for-each>
</xsl:template>

Without xsl:for-each, you'd have to have a special set of templates that 
walked up (instead of down) the tree, and somehow reversed the order of the 
values reported. It could be done with a single recursive template. But 
this solution is easier.

Enjoy,
Wendell

At 11:32 AM 9/13/01, you wrote:
> I'd like to build a template that gives me "path" of parent nodes
> for example:
>
> XML
> <components>
>   <component name="comp1">
>     <some_node1>
>       <component name="comp2">
>       </component>
>     </some_node1>
>     <some_node2>
>       <some_node3>
>         <component name="comp3">
>           <some_node>
>         </component>
>       </some_node3>
>     </some_node2>
>   </component>
> </components>
>
> XSL
> <xsl:template match="some_node">
>   hier walk through parent nodes
> </xsl:template>
>
> output:
>
> "comp1/comp3"


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Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
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