Re: [xsl] Finding wanted nodes in complex document

[Joerg Heinicke <joerg.heinicke@xxxxxx>]

Hi Geoff,

for such tasks it's better to use <xsl:template/> instead of 
<xsl:for-each/>. With templates it's easier to walk down the tree to 
different levels:

<xsl:template match="bookmarks">
  <bookmarks>
    <category>
      <xsl:apply-templates select="DT/H3"/>
      <xsl:apply-templates select="DL[DT/H3]"/>
    </category>
  </bookmarks>
</xsl:template>

<xsl:template match="DL">
  <subcat level="{count(ancestor::DL)}">
    <xsl:apply-templates select="DT/H3"/>
    <xsl:apply-templates select="DL[DT/H3]"/>
  </subcat>
</xsl:template>

<xsl:template match="H3">
  <xsl:attribute name="name">
    <xsl:value-of select="."/>
  </xsl:attribute>
</xsl:template>

I don't think that you get the expected output, but it should give you 
an idea how templates work.

I explained your error below ...

Geoff wrote:
> I have a big,complicate, messy xml document (originally a Mozilla
> bookmark file that I made into well-formed xml) that I wish to transform
> into a lean, mean and clean xml document and I am having some trouble.
>
>
> Here is part of the document:
> <?xml version="1.0" encoding="UTF-8"?>
> <bookmarks>
>     <DT>
>         <H3 ADD_DATE="1032875519" ID="NC:BookmarksRoot#$f68320c5"
>             LAST_MODIFIED="1033072101">Consumer Guides</H3>
>     </DT>
>     <DL>
>         <p/>
>         <DT>
>             <H3 ADD_DATE="1032876491"
> ID="NC:BookmarksRoot#$f68320c6">Alabama</H3>
>         </DT>
>         <DL>
>             <p/>
>         </DL>
>         <p/>
>         <DT>
>             <H3 ADD_DATE="1032876720" ID="NC:BookmarksRoot#$f68320dc"
> LAST_MODIFIED="1033071828">Minnesota</H3>
>         </DT>
>         <DL>

What you are doing wrong? From your category <H3/> elements you always 
go up to the <DL> element above (first part '../../' of the XPath in 
<xsl:value-of/>). Now with the rest of the XPath you go down the tree to 
the first DL/DT/H3. And this is always the <H3>Mediation</H3> element.

Regards,

Joerg

>             <p/>
>             <DT>
>                 <H3 ADD_DATE="1033068848" ID="NC:BookmarksRoot#$c0ebfb0"
>                     LAST_MODIFIED="1033077022">Alternative Dispute
> Resolution</H3>
>             </DT>
>             <DL>
>                 <p/>
>                 <DT>
>                     <H3 ADD_DATE="1032902327"
> ID="NC:BookmarksRoot#$f6832141"
> LAST_MODIFIED="1033077446">Mediation</H3>
>                 </DT>
>                 <DL>
>                     <p/>
>                     <DT>
>                         <A ADD_DATE="1033077149"
>                            
> HREF="http://www.co.hennepin.mn.us/courts/ConcCt/ccmediation.htm";
>                             LAST_CHARSET="ISO-8859-1"
> LAST_MODIFIED="1033077270">Mediation in
>                             Conciliation Court [From the Hennepin County
> District Court]</A>
>                     </DT>
>                 </DL>
>                 <p/>
>                 <DT>
>                     <A ADD_DATE="1033076751"
> HREF="http://www.courts.state.mn.us/adr/adr_info.htm";
>                         LAST_CHARSET="ISO-8859-1"
> LAST_MODIFIED="1033076778">Minnesota Alternative
>                         Dispute Resolution [From the Judicial
> System]</A>
>                 </DT>
>                 <DT>
>                     <A ADD_DATE="1033076913"
>                        
> HREF="http://www.co.hennepin.mn.us/courts/Arbitration/arbmain.htm";
>                         LAST_CHARSET="ISO-8859-1"
> LAST_MODIFIED="1033076983"
>                         LAST_VISIT="1033077513">What You Need to Know
> About Arbitration [From the
>                         Hennepin County District Court]</A>
>                 </DT>
>             </DL>

<shortened/>

> OK I told you it was messy.
> So first I want to get all the "categories" which I do like this:
>
> <xsl:for-each select="bookmarks/DL/DL/DT/H3">
> 	<category>
> 		<xsl:attribute name="name">
> 			<xsl:value-of select="."/>
> 		</xsl:attribute>		
> 	</category>
> </xsl:for-each>
> This gives me a nice clean document like this:
>   <category name="Alternative Dispute Resolution"/>
>   <category name="Bankruptcy"/>
>   <category name="Business Law"/>
>   <category name="Charities"/>
>   <category name="Civil Rights Law"/>
>   <category name="Courts"/>
>   <category name="Consumer Law"/>
>   <category name="Contracts"/>
> etc....
> Now I want to get the "subcategories" related to the "categories" which
> are at "bookmarks/DL/DL/DL/DT/H3" or "../../DL/DT/H3" when compared to
> the "category" node.
>
> So what I want is something like this:
> <category name="Alternative Dispute Resolution">
> 	<subcat name="Mediation"/>
> </category>
> <category name="Bankruptcy"/>
> <category name="Business Law">
> 	<subcat name="Corporations"/>
> </category>
>
> I am attempting to do this like this:
> <xsl:for-each select="bookmarks/DL/DL/DT/H3">
> 	<category>
> 		<xsl:attribute name="name">
> 			<xsl:value-of select="."/>
> 		</xsl:attribute>
> 				
> 		<subcat>
> 			<xsl:attribute name="name">
> 				<xsl:value-of select="../../DL/DT/H3"/>
> 			</xsl:attribute>
> 		</subcat> 
> 			
> 	</category>
> </xsl:for-each>
> But this produces this:
> <category name="Alternative Dispute Resolution">
>     <subcat name="Mediation"/>
> </category>
> <category name="Bankruptcy">
>     <subcat name="Mediation"/>
> </category>
> <category name="Business Law">
>     <subcat name="Mediation"/>
> </category>
> <category name="Charities">
>     <subcat name="Mediation"/>
> </category>
>
> What am I doing wrong??


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