duplicate test

Hi,

I'm trying to remove duplicates from a list of characters
when they are sending multiple messages in a room until they leave and
come back in. My stylesheet is as follows: -

<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="text" /> 
  
<xsl:key name="kByID" match="DIRECT | LOCAL | GLOBAL | ADMIN"
use="LOCATION_ID" /> 

<xsl:variable name="vLocations" select="LOG/*[generate-id() =
generate-id(key('kByID', LOCATION_ID)[1])]" /> 

<xsl:variable name="NL" select="' '" /> 

<xsl:template match="/">

<xsl:for-each select="$vLocations">

 <xsl:value-of select="concat('Location: ', LOCATION_ID, ':', $NL )" /> 

  <xsl:for-each select="/LOG/*/LOCATION_ID [. = current()/LOCATION_ID]">

   <xsl:if test="not(../CHARACTER_ID =
../preceding-sibling::DIRECT                   [CHARACTER_ID =
current()[1]/CHARACTER_ID)">
      <xsl:value-of select="concat(' ', ../CHARACTER_ID, $NL)" /> 
  </xsl:if>
  
 </xsl:for-each>

</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
------------------------------------------------------------------------

and with the following xml: -
<LOG>
   <DIRECT>
      <COMMUNICATION_TYPE> PAGETELL </COMMUNICATION_TYPE>
      <Invoc_serial> 29 </Invoc_serial>
      <Serial> 19461910 </Serial>
      <USAGE> TELL </USAGE>
      <MESSAGE_TYPE> EMOTE </MESSAGE_TYPE>
      <CHARACTER_ID> 10010 </CHARACTER_ID>
      <CHARACTER_STATUS> 6 </CHARACTER_STATUS>
      <LOCATION_ID> 24488 </LOCATION_ID>
      <TARGET_CHARACTER_ID> 18735 </TARGET_CHARACTER_ID>
      <TARGET_CHARACTER_STATUS> 6 </TARGET_CHARACTER_STATUS>
      <TARGET_CHARACTER_LOCATION_ID> 10433
</TARGET_CHARACTER_LOCATION_ID>
      <MESSAGE> %#NF#%wthinks %y%l. o O ( %w%lThinks of a new
prefix/suffix.%y%l ) </MESSAGE>
      <TIME> 'Tue, 01 Jan 2002 20:27:50 +0000' </TIME>
   </DIRECT>
   <DIRECT>
      <COMMUNICATION_TYPE> PAGETELL </COMMUNICATION_TYPE>
      <Invoc_serial> 29 </Invoc_serial>
      <Serial> 19461911 </Serial>
      <USAGE> TELL </USAGE>
      <MESSAGE_TYPE> EMOTE </MESSAGE_TYPE>
      <CHARACTER_ID> 10010 </CHARACTER_ID>
      <CHARACTER_STATUS> 6 </CHARACTER_STATUS>
      <LOCATION_ID> 24488 </LOCATION_ID>
      <TARGET_CHARACTER_ID> 23212 </TARGET_CHARACTER_ID>
      <TARGET_CHARACTER_STATUS> 3 </TARGET_CHARACTER_STATUS>
      <TARGET_CHARACTER_LOCATION_ID> 293 </TARGET_CHARACTER_LOCATION_ID>
      <MESSAGE> %#NF#%wthinks %y%l. o O ( %w%lThinks of a new
prefix/suffix.%y%l ) </MESSAGE>
      <TIME> 'Tue, 01 Jan 2002 20:27:50 +0000' </TIME>
   </DIRECT>
   <DIRECT>
      <COMMUNICATION_TYPE> PAGETELL </COMMUNICATION_TYPE>
      <Invoc_serial> 29 </Invoc_serial>
      <Serial> 19461912 </Serial>
      <USAGE> TELL </USAGE>
      <MESSAGE_TYPE> EMOTE </MESSAGE_TYPE>
      <CHARACTER_ID> 10010 </CHARACTER_ID>
      <CHARACTER_STATUS> 6 </CHARACTER_STATUS>
      <LOCATION_ID> 24488 </LOCATION_ID>
      <TARGET_CHARACTER_ID> 16783 </TARGET_CHARACTER_ID>
      <TARGET_CHARACTER_STATUS> 5 </TARGET_CHARACTER_STATUS>
      <TARGET_CHARACTER_LOCATION_ID> 39784
</TARGET_CHARACTER_LOCATION_ID>
      <MESSAGE> %#NF#%wthinks %y%l. o O ( %w%lThinks of a new
prefix/suffix.%y%l ) </MESSAGE>
      <TIME> 'Tue, 01 Jan 2002 20:27:50 +0000' </TIME>
   </DIRECT>
   <DIRECT>
      <COMMUNICATION_TYPE> PAGETELL </COMMUNICATION_TYPE>
      <Invoc_serial> 29 </Invoc_serial>
      <Serial> 19461913 </Serial>
      <USAGE> TELL </USAGE>
      <MESSAGE_TYPE> EMOTE </MESSAGE_TYPE>
      <CHARACTER_ID> 10010 </CHARACTER_ID>
      <CHARACTER_STATUS> 6 </CHARACTER_STATUS>
      <LOCATION_ID> 34567 </LOCATION_ID>
      <TARGET_CHARACTER_ID> 35257 </TARGET_CHARACTER_ID>
      <TARGET_CHARACTER_STATUS> 4 </TARGET_CHARACTER_STATUS>
      <TARGET_CHARACTER_LOCATION_ID> 293 </TARGET_CHARACTER_LOCATION_ID>
      <MESSAGE> %#NF#%wthinks %y%l. o O ( %w%lThinks of a new
prefix/suffix.%y%l ) </MESSAGE>
      <TIME> 'Tue, 01 Jan 2002 20:27:50 +0000' </TIME>
   </DIRECT>
   <DIRECT>
      <COMMUNICATION_TYPE> PAGETELL </COMMUNICATION_TYPE>
      <Invoc_serial> 29 </Invoc_serial>
      <Serial> 19461994 </Serial>
      <USAGE> TELL </USAGE>
      <MESSAGE_TYPE> STD </MESSAGE_TYPE>
      <CHARACTER_ID> 20241 </CHARACTER_ID>
      <CHARACTER_STATUS> 3 </CHARACTER_STATUS>
      <LOCATION_ID> 31132 </LOCATION_ID>
      <TARGET_CHARACTER_ID> 14211 </TARGET_CHARACTER_ID>
      <TARGET_CHARACTER_STATUS> 5 </TARGET_CHARACTER_STATUS>
      <TARGET_CHARACTER_LOCATION_ID> 3726
</TARGET_CHARACTER_LOCATION_ID>
      <MESSAGE> "lol I found my own ways to amuse myself tho...like when
liv tyler went 'ive got to take him to my father' im like yayaay were
going to se steve tylerrrrr!!! " </MESSAGE>
      <TIME> 'Tue, 01 Jan 2002 20:28:08 +0000' </TIME>
   </DIRECT>
   <DIRECT>
      <COMMUNICATION_TYPE> PAGETELL </COMMUNICATION_TYPE>
      <Invoc_serial> 29 </Invoc_serial>
      <Serial> 19461995 </Serial>
      <USAGE> TELL </USAGE>
      <MESSAGE_TYPE> STD </MESSAGE_TYPE>
      <CHARACTER_ID> 10010 </CHARACTER_ID>
      <CHARACTER_STATUS> 3 </CHARACTER_STATUS>
      <LOCATION_ID> 24488 </LOCATION_ID>
      <TARGET_CHARACTER_ID> 12969 </TARGET_CHARACTER_ID>
      <TARGET_CHARACTER_STATUS> 3 </TARGET_CHARACTER_STATUS>
      <TARGET_CHARACTER_LOCATION_ID> 111 </TARGET_CHARACTER_LOCATION_ID>
      <MESSAGE> "lol I found my own ways to amuse myself tho...like when
liv tyler went 'ive got to take him to my father' im like yayaay were
going to se steve tylerrrrr!!! " </MESSAGE>
      <TIME> 'Tue, 01 Jan 2002 20:28:08 +0000' </TIME>
   </DIRECT>
 </LOG>

produces

Location:  24488 :
     10010 
     10010 * shouldnt be here as still in same room
     10010 * ditto
     10010 ok left and went to location 34567 below and came back
Location:  34567 :
     10010 
Location:  31132 :
     20241 


Instead of: -

Location:  24488 :
     10010 
     10010 
Location:  34567 :
     10010 
Location:  31132 :
     20241 

I cant see whats wrong, is my <if> test suspect?

Regards

Ahmad

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list