bigAPE wrote:
> Hi All,
> 
> I'm trying to clone a nodeset and alter one or two of the element
> values in an attempt to save me having to rebuild all of them or copy
> them all over and add the new ones.
> 
> So What I would like to do is "Copy" SomeBlock named "A" with all the
> 50+ child elements intact, but modify one or more random fields with
> updated values
> 
> -----------------------------
> SAMPLE INPUT
> -----------------------------
> 
> <wrapper>
>     <SomeBlock name="A">
>         <SomeField name="A1">SomeValue1</SomeField>
>         <SomeField name="A2">SomeValue2</SomeField>
>         <SomeField name="A3">SomeValueA</SomeField>
>         <SomeField name="A4">SomeValueB</SomeField>
>         ...and about 50 more elements
>     </SomeBlock>
>     <SomeBlock name="B">
>         <SomeField name="A1">SomeValue2</SomeField>
>         <SomeField name="A2">SomeValue1</SomeField>
>         <SomeField name="A3">SomeValueF</SomeField>
>         <SomeField name="A4">SomeValueE</SomeField>
>         ...and about 50 more elements
>     </SomeBlock>
>     <SomeBlock name="C">
>         <SomeField name="A1">SomeValue2</SomeField>
>         <SomeField name="A2">SomeValue1</SomeField>
>         <SomeField name="A3">SomeValueF</SomeField>
>         <SomeField name="A4">SomeValueE</SomeField>
>         ...and about 50 more elements
>     </SomeBlock>
>     ...more SomeBlocks
>     <actions>
>         <action type="Update" ref="A">
>             <field name="A2">SomeValue9</Field>
>             <field name="A4">SomeValueX</Field>
>         </action>
>         <action type="Update" ref="C">
>             <field name="A1">SomeValue5</Field>
>         </action>
>     </actions>
> </wrapper>
> 
> -----------------------------
> SAMPLE OUTPUT
> -----------------------------
> The output of the XSLT would be as follows:
> 
> <Results>
>     <SomeBlock name="A">
>         <SomeField name="A1">SomeValue1</SomeField>
>         <SomeField name="A2">SomeValue9</SomeField>  <-- Updated
>         <SomeField name="A3">SomeValueA</SomeField>
>         <SomeField name="A4">SomeValueX</SomeField>  <-- Updated
>         ...and about 50 more elements
>     </SomeBlock>
>     <SomeBlock name="C">
>         <SomeField name="A1">SomeValue5</SomeField>  <-- Updated
>         <SomeField name="A2">SomeValue1</SomeField>
>         <SomeField name="A3">SomeValueF</SomeField>
>         <SomeField name="A4">SomeValueE</SomeField>
>         ...and about 50 more elements
>     </SomeBlock>
> </Results>

Here is an XSLT stylesheet:

<xsl:stylesheet
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   version="1.0">

   <xsl:output method="xml" indent="yes"/>
   <xsl:strip-space elements="*"/>

   <xsl:template match="@* | node()">
     <xsl:copy>
       <xsl:apply-templates select="@* | node()"/>
     </xsl:copy>
   </xsl:template>

   <xsl:template match="/wrapper">
     <Results>
       <xsl:apply-templates select="SomeBlock[@name = 
/wrapper/actions/action[@type = 'Update']/@ref]"/>
     </Results>
   </xsl:template>

   <xsl:template match="SomeField">
     <xsl:copy>
       <xsl:apply-templates select="@*"/>
       <xsl:variable name="fieldaction"
         select="/wrapper/actions/action[@type = 'Update' and @ref = 
current()/parent::SomeBlock/@name]/field[@name = current()/@name]"/>
       <xsl:choose>
         <xsl:when test="$fieldaction">
           <xsl:value-of select="$fieldaction"/>
         </xsl:when>
         <xsl:otherwise>
           <xsl:value-of select="."/>
         </xsl:otherwise>
       </xsl:choose>
     </xsl:copy>
   </xsl:template>
</xsl:stylesheet>


-- 

	Martin Honnen --- MVP XML
	http://JavaScript.FAQTs.com/