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>

I have played with copying the entire SomeBlock into a Variable, but
I'm struggling to find a mechanism to updated any of the values
without looping through all the of the elements and writing them out
unless they are the Names in question and then writing my own element
which just seems lengthy to me. Isn't there a way to do something
similar to the following:

<xsl:for-each select="/wrapper/actions/action">
    <xsl:variable name="actionTtype" select="@type">
    <xsl:variable name="blockName" select="@ref">
    <xsl:variable name="tempSomeBlock">
        <xsl:copy-of select="/wrapper/SomeBlock[@name='$blockName']" /
>
    </xsl:variable>
    <xsl:for-each select="field">
        <!-- Locate the SomeField named @name in $tempSomeBlock and
update it's value to . of SomeField -->
    </xsl:for-each>
    <xsl:copy-of select="tempSomeBlock" />
</xsl:for-each>

As you can see this isn't right and I was looking for a short sharp
kick in the pants to point me in the right direction.

Caveats - Obviously this is a watered down example which I think
covers the area I am having trouble with. The values that will replace
the existing one will come from various sources further down the
document, not just within the action\field elements

Any help or abuse greatly appreciated

Al