RE: [xsl] filter

[Paul <reganmian@xxxxxxxxx>]

Thanks Tom, you always take sth new to me.

Paul

--- TSchutzerWeissmann@xxxxxxxxxxxxxxxx wrote:
> 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
> 


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