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RE: [xsl] failed to find the right child node

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No one replays my question by now. I just send again to bring up your
attention. Thanks ahead.

-- Jessica

-----Original Message-----
From: Lin, Jessica [mailto:jlin@xxxxxxxxxxx]
Sent: Tuesday, August 29, 2006 4:44 PM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: [xsl] failed to find the right child node

I am trying to find out whether all channel objects are in the same
networks. Each legacy_stream has a different network_id which indicates
different
Networks. I plan to recursively check all fast_load stream, if it
contains channel object, I will increase sum of networks by 1. At the
end, I will check the sum of network, if it is larger than one, I will
assign a Boolean false value to indicate that all channels are in the
different network. Otherwise, I will assign a Boolean true value.
But, when I try to check each fast_load_stream by using  select
="//fast_load_stream[position()=$index]", it does not work. Could you
please help me to find out what's wrong in my code?


<?xml version="1.0" encoding="UTF-8"?>
<streams>
  <legacy_stream name="stream1">
    <mpt_stream>
	<apg_stream>
	  <fast_load_stream>
		<network_id>0</network_id>
		<cycle_time_seconds>4</cycle_time_seconds>
		<objects>
		   <update_list_object ref="ULO1"/>
		   <channel_object ref="CO1"/>
		   <channel_object ref="CO2"/>
		</objects>
	  </fast_load_stream>
	</apg_stream>
    </mpt_stream>
  </legacy_stream>
  <legacy_stream name="stream2">
    <mpt_stream>
	<apg_stream>
	  <fast_load_stream>
		<network_id>1</network_id>
		<cycle_time_seconds>4</cycle_time_seconds>
		<objects>
		   <update_list_object ref="ULO2"/>
		   <channel_object ref="CO3"/>
		   <channel_object ref="CO4"/>
		</objects>
	  </fast_load_stream>
	</apg_stream>
    </mpt_stream>
  </legacy_stream>
  <legacy_stream name="stream3">
    <mpt_stream>
	<apg_stream>
	  <fast_load_stream>
		<network_id>2</network_id>
		<cycle_time_seconds>4</cycle_time_seconds>
		<objects>
		   <update_list_object ref="ULO3"/>
		   <channel_object ref="CO5"/>
		   <channel_object ref="CO6"/>
		</objects>
	  </fast_load_stream>
	</apg_stream>
    </mpt_stream>
  </legacy_stream>
</streams>


Here is my xslt file. I use some xsl:value-of to print out some outputs
for debug purpose.


<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:output method="xml" encoding="UTF-8" indent="yes" />


<xsl:template match="/">
  <xsl:call-template name="isInSameNetwork">
    <xsl:with-param name="totalNetworks"
select="count(//fast_load_stream)"/>
    </xsl:call-template>
</xsl:template>


<xsl:template name="isInSameNetwork">
  <xsl:param name="totalNetworks"/>
  <xsl:param name="index" select="1"/>
  <xsl:param name="sumNetworks" select="0"/>
  <xsl:value-of select="concat('#totalNetworks = ',
$totalNetworks, ', index = ', $index, ' sumNetworks = ',
$sumNetworks)"/>
  <xsl:variable name="fastloadStream"
select="//fast_load_stream[position()=$index]"/>
  <xsl:if test="$index &lt; $totalNetworks">
    <xsl:choose>
	<xsl:when test="fastloadStream/objects/channel_object" >
	   <xsl:text> $has COs </xsl:text>
	   <xsl:call-template name="isInSameNetwork">
	      <xsl:with-param name="totalNetworks"
select="$totalNetworks"/>
	      <xsl:with-param name="index" select="$index + 1"/>
	      <xsl:with-param name="sumNetworks" select="$sumNetworks +
1" />
	   </xsl:call-template>
	</xsl:when>
     <xsl:otherwise>
	  <xsl:text> $has no COs </xsl:text>
	  <xsl:call-template name="isInSameNetwork">
	     <xsl:with-param name="totalNetworks"
select="$totalNetworks"/>
	     <xsl:with-param name="index" select="$index + 1"/>
	     <xsl:with-param name="sumNetworks" select="$sumNetworks" />
	  </xsl:call-template>
    </xsl:otherwise>
  </xsl:choose>
</xsl:if>

<xsl:choose>
   <xsl:when test="$sumNetworks &gt; 1">
	<xsl:value-of select="false()"/>
   </xsl:when>
   <xsl:otherwise>
	<xsl:value-of select="true()"/>
   </xsl:otherwise>
</xsl:choose>
</xsl:template>

</xsl:stylesheet>

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