RE: filter

Hi Paul,

> and the fact is group element will always apply to 
> a structure:

> /xs:element/xs:complexType/xs:sequence/xs:element with
> the occuring of @maxOccurs attribute 

The "/" at the beginning of that XPath is my typo - it shouldn't be there
because it's short for the document root. The only element in the schema
that is a child of / is the top node, xs:schema.

Group on xs:element[xs:complexType/xs:sequence/xs:element/@maxOccurs]. You
don't need "boolean" - if the expression in the predicate is the empty
node-set then it's equivalent to false.

The negative version of the filter is
	xs:element[not(xs:complexType/xs:sequence/xs:element/@maxOccurs)]

This is the modified version...(untested)

============================================================

<xsl:key name="childGroups"
match="xs:element[xs:complexType/xs:sequence/xs:element/@maxOccurs]"
  use="generate-id(
	
(ancestor::xs:element[xs:complexType/xs:sequence/xs:element/@maxOccurs][1]
	| /)[last())"/>

<!-- the ( xyz | / )[last()] will always give you xyz if it exists,
otherwise the root node. 
	This is because the root node is the very first node, so any node
comes later than it 
	and will be last of the pair 

	So we can refer to the top group using this key and the id of the
root element, instead of
	using a long XPath nightmare
-->

<xsl:key name="byGroup"
match="xs:element[not(xs:complexType/xs:sequence/xs:element/@maxOccurs)]"
  use="generate-id(
       ancestor-or-self::*/preceding-sibling::xs:element
	[xs:complexType/xs:sequence/xs:element/@maxOccurs][1]"/>

<!-- notice that the match is just on xs:element -->

<xsl:template match="/xs:schema/xs:element">
  <xsl:apply-templates select="key('childGroups',generate-id(/))"
mode="recurse"/>
</xsl:template>

<xsl:template match="xs:element" mode="recurse">
  <!-- for each group -->
    <xsl:variable name="me" select="generate-id()"/>

    Group <xsl:value-of select="@ref"/> Starts     
    
    <xsl:apply-templates select="key('childGroups',$me)" mode="recurse"/>
   
    Group <xsl:value-of select="@ref"/> Ends.
                                        
    <xsl:for-each select="key('byGroup',$me)">
      <xsl:value-of select="@ref"/> Starts
    </xsl:for-each>
    
    <xsl:for-each select="key('byGroup',$me)">
      <xsl:value-of select="@ref"/> Ends
    </xsl:for-each>

</xsl:template>

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list