RE: walking a tree

Hi.

> -----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx 
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of florian
> Sent: Thursday, June 05, 2003 4:23 PM
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Cc: davidc@xxxxxxxxx
> Subject: Re:  walking a tree
> 
> 
(...)
> 
> 
> arg. and the output should look like::
> 
> apple - 2
>     orange - 5
> 
> orange - 5
> 

Try this:
 <xsl:template match="root">
  <!-- we start with the tree node -->
  <xsl:apply-templates select="tree"/>
 </xsl:template> 
 
 <xsl:template match="tree">
  <!-- select the lis with name = @dataListName passing as parameters
the connections and the display -->
  <xsl:apply-templates
select="preceding-sibling::list[@name=current()/@dataListName]">
   <xsl:with-param name="cnn"
select="preceding-sibling::list[@name=current()/@connectionListName]"/>
   <xsl:with-param name="dsp" select="display"/>
  </xsl:apply-templates>
 </xsl:template>
 
 <xsl:template match="list">
  <xsl:param name="cnn"/>
  <xsl:param name="dsp"/>
  <xsl:apply-templates select="object">
   <xsl:with-param name="cnn" select="$cnn"/>
   <xsl:with-param name="dsp" select="$dsp"/>
  </xsl:apply-templates>
 </xsl:template>
 
 <xsl:template match="object">
  <xsl:param name="cnn"/>
  <xsl:param name="dsp"/>
  <!-- display the current object acording to the ruls in the dsp
variable -->
  <xsl:apply-templates select="$dsp/*">
   <xsl:with-param name="data" select="."/>
  </xsl:apply-templates>
  <xsl:text>&#10;</xsl:text>
  <!-- look for other objects connected to this -->
  <xsl:apply-templates select="$cnn/connection[inId=current()/id]">
   <xsl:with-param name="cnn" select="$cnn"/>
   <xsl:with-param name="dsp" select="$dsp"/>
   <xsl:with-param name="data" select=".."/>
  </xsl:apply-templates>
 </xsl:template>
 
 <xsl:template match="property">
  <xsl:param name="data"/>
  <xsl:apply-templates select="$data/*[name()=current()/@field]"/>
 </xsl:template>
 
 <xsl:template match="text">
  <xsl:apply-templates/>
 </xsl:template>
 
 <xsl:template match="connection">
  <xsl:param name="cnn"/>
  <xsl:param name="dsp"/>
  <xsl:param name="data"/>
  <!-- display 4 spaces and select the outId object -->
  <xsl:text>&#160;&#160;&#160;&#160;</xsl:text>
  <xsl:apply-templates select="$data/object[id=current()/outId]">
   <xsl:with-param name="cnn" select="$cnn"/>
   <xsl:with-param name="dsp" select="$dsp"/>
  </xsl:apply-templates>
 </xsl:template>

Using this xml:
<root>
 <list name="foo">
   <object>
     <name>apple</name>
     <size>2</size>
     <id>1</id>
   </object>
   <object>
     <name>orange</name>
     <size>5</size>
     <id>2</id>
   </object>
   .....
 </list>
 <list name="connections">
   <connection>
    <inId>1</inId>
    <outId>2</outId>
   </connection>
  ....
 </list>
 <tree dataListName="foo" connectionListName="connections" >
   <display>
     <property field="name" />
     <text> - </text>
     <property field="size" />
   </display>
 </tree>
</root>

Has this results:
apple - 2
    orange - 5
orange - 5

Hope this helps you



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