[xsl] Multiple instances of the same nodeset - is this possible.

[John Aschenbrenner <jaschenbrenner at ignitionmts dot com>]

I often find myself in a situation where I would like to traverse a nodeset
multiple times simultaneously in a document.
Example:
	<root>
	  <row FieldName="CustName" Message="FREELOADER FREDDIE"/>
	  <row ListID="391" FieldName="ListOfMessages" Message="This is a
message." MessageID="391" IsNewline="True"/>
	  <row ListID="402" FieldName="ListOfMessages" Message="Freddie has
up to 1 full month" MessageID="402" IsNewline="True"/>
	  <row ListID="403" FieldName="ListOfMessages" Message="to pay off
his bill." MessageID="402" IsNewline="False"/>
	  <row ListID="408" FieldName="ListOfMessages" Message="Most recent
data for FREELOADER FREDDIE." MessageID="408" IsNewline="True"/>
	  <row ListID="415" FieldName="ListOfMessages" Message="Favorite
sports and hobbies: Bicycling backgammon" MessageID="415" IsNewline="True"/>
	  <row ListID="416" FieldName="ListOfMessages" Message="and
sailing." MessageID="415" IsNewline="False"/>
	  <row ListID="514" FieldName="ListOfMessages" Message="Signed
liability waiver If participating in category" MessageID="514"
IsNewline="True"/>
	  <row ListID="515" FieldName="ListOfMessages" Message="A sporting
activities." MessageID="514" IsNewline="False"/>
	</root>


What I would like to do with this data is output it in a tabular format.  If
the attribute IsNewline="True" then I have the beginning of a new record
else just concatenate it to the previous.

I have a template that looks like this.
    <xsl:template name="GetMessages">
      <xsl:param name="GetMessagesSet1"/>
      <xsl:param name="GetMessagesSet2"/>

        <xsl:for-each select="$GetMessagesSet1[@IsNewline='True']">
          <xsl:variable name="i" select="position()"/>
          <xsl:variable name="MessageID"
select="$GetMessagesSet1[$i]/@ListID"
        	<tr>
        		<td valign="bottom" align="left" width="10%">
        			<p class="feedbackMsg">______</p>
        		</td>
        		<td align="left" width="80%">
        			<p class="feedbackMsg">

          			<xsl:for-each
select="$GetMessagesSet2[@MessageID=$MessageID]">
          			  <xsl:variable name="j"
select="position()"/>
          			  <xsl:value-of
select="$GetMessagesSet1[@MessageID=$MessageID][$j]/@Message"/>
          			</xsl:for-each>
          			
        			</p>
        		</td>
        		<td valign="bottom" align="middle" width="10%">
        			<p class="feedbackMsg">________________</p>
        		</td>
        	</tr>
        </xsl:for-each>
        
    </xsl:template>

As you may have guessed when I call this template as follows
<xsl:call-template name="GetMessages">
  <xsl:with-param name="GetMessagesSet1"
select="z:row[@FieldName='ListOfMessages']"/>
  <xsl:with-param name="GetMessagesSet2"
select="z:row[@FieldName='ListOfMessages']"/>
</xsl:call-template>

it does not work as I would like because even though I think I have created
two independent nodesets.  I only have one.

My question is this - Is it somehow possible to have two independent
nodesets with identical data that you can traverse simultaneously?

I have since solved my problem by using a recursive template - however I
would still like my question answered.

Thank you,
John Aschenbrenner
Ignition Mortgage Technology Solutions, Inc.
jaschenbrenner@ignitionmts.com
Ph: (253)858-8955 x 239
http://www.ignitionmts.com




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