re: Key()

Hello,

Thank you very much Jeni and Francis for your help.
I really appreciated your friendly response. I am still
grappling with some aspects of the problem.

I have been drawing result trees and applying XPath expressions
in an endeavour to fully understand how my use of the key()
function is working. But still the outcome is not quite right.
Not only is there an ordering problem but also my index
seems to contain only a duplication of the first paragraph.
Perhaps I am missing something obvious?

It is important that I am able to mark a paragraph for the
inclusion into one or many resulting documents.

Thank you
Rhonda


PRECEDING-SIBLING
===================

temp.xml
-------

<Template>
    <Destination>
         <Target doc="contract"/>
          <Target doc="advice"/>
          <Target host="true"/>
          <Section><SectionHeading>My Heading
                                 </SectionHeading></Section>
          <Para>
               This paragraph appears in both the contract
                and advice documents and is only included
                for those customers hosting.
          </Para>
           <Para>
                Blah, Blah
           </Para>
    </Destination>
    <Destination>
        <Target doc="contract"/>
        <Target host="true"/>
         <Para>
              This paragraph will appear in only the contract
               document for those customers hosting.
          </Para>
          <Para>
              Blah
           </Para>
    </Destination>
</Template>

Transform.xsl
-----------

<xsl:key name="blueprint" match="Para"
      use="concat(preceding-sibling::Target/@doc, '-',
                               preceding-sibling::Target/@host)"/>

<xsl:template match="Template|Section|SectionHeading
                                            |Content|Table">
    <xsl:element name="{name()}">
         <xsl:copy-of select="attribute::node()"/>
         <xsl:apply-templates/>
    </xsl:element>
</xsl:template>

<xsl:template match="Para"/>

<xsl:template match="Destination">
     <xsl:value-of select="key('blueprint',
          'contract-true')"/>
      <xsl:apply-templates/>
</xsl:template>


output.xml
--------

<Template>

      This paragraph appears in both the contract
       and advice documents and is only included
       for those customers hosting.
<Section><SectionHeading>My Heading
                        </SectionHeading></Section>
       This paragraph appears in both the contract
        and advice documents and is only included
        for those customers hosting.
</Template>


ANCESTOR
==========

I changed the source tree refering to an ancestor
rather than a preceding-sibling and still the
output was not right?


temp.xml
-------

<Template>
    <Destination>
         <Target doc="contract">
              <Target doc="advice">
                  <Target host="true">
                        <Section><SectionHeading>
                                My Heading
                                </SectionHeading></Section>
                        <Para>
                             This paragraph appears in both the contract

                              and advice documents and is only included
                             for those customers hosting.
                        </Para>
                        <Para>
                            Blah, Blah
                        </Para>
                     </Target>
                </Target>
            </Target>

... Similar for next <Destination>

    </Destination>
</Template>




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