RE: [xsl] Siblings to child - Hierarchy

["Michael Kay" <mhk@xxxxxxxxx>]

You can process this kind of hierarchy very easily.

Instead of using xsl:apply-templates in the usual way to process the
physical children of a node, use it to select and process the logical
children of the node:

<xsl:apply-templates select="//row[site_parent = current()/site_id]"/>

Then all you need is for the root template to select the logical top of
the hierarchy and do apply-templates on that.

For greater efficiency, use keys.

Michael Kay

> -----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx 
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Todd Kleine
> Sent: 22 August 2003 16:06
> To: XSL-List@xxxxxxxxxxxxxxxxxxxxxx
> Subject: [xsl] Siblings to child - Hierarchy
> 
> 
> Hello,
>  
> I am new to xsl and am having a tough time with a template to 
> transform the results of an oracle "connect by" query into a 
> hierarchical xml document.
> 
> The xml results of a sample query is below:
>  
> <page>
>   <rowset>
>     <row>
>       <site_id>1</site_id> 
>       <site_name>Test Parent1</site_name> 
>       <site_parent>0</site_parent> 
>       <level>1</level> 
>       <path>/0</path> 
>     </row>
>     <row>
>       <site_id>2</site_id> 
>       <site_name>Test Child1 of Test Parent1</site_name> 
>       <site_parent>1</site_parent> 
>       <level>2</level> 
>       <path>/0/1</path> 
>     </row>
>     <row>
>       <site_id>4</site_id> 
>       <site_name>Test Child1 of Test Child1</site_name> 
>       <site_parent>2</site_parent> 
>       <level>3</level> 
>       <path>/0/1/2</path> 
>     </row>
>     <row>
>       <site_id>3</site_id> 
>       <site_name>Test Parent2</site_name> 
>       <site_parent>0</site_parent> 
>       <level>1</level> 
>       <path>/0</path> 
>     </row>
>   </rowset>
> </page>
>  
> where the site_parent value is the site_id of it's parent and 
> a site_parent of 0 is a top-level node.
> 
> I would like to produce a hierarchical xml doc based upon 
> these results of the form
> 
> <site>
>   <site_id>1</site_id>
>   <site_name>Test Parent1</site_name>
>   <site>
>     <site_id>2</site_id>
>     <site_name> Test Child1 of Test Parent1</site_name>
>     <site>
>       <site_id>4</site_id>
>       <site_name>Test Child2 of Test Child1</site_name>
>     </site>
>   </site>
> </site>
> <site>
>   <site_id>3</site>
>   <site_name>Test Parent2</site_name>
> </site>
>           
> Has anyone had experience with this type of transform?  Any 
> help would be appreciated.
> 
> Thanks in advance
> 
> todd
> 
> 
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