[xsl] Re: using keys for counting not sorting

[Dimitre Novatchev <dnovatchev@xxxxxxxxx>]

Oopps...

In my previous message I didn't take into account "characters" that only received
messages, but didn't send any.

Here's the now correct solution:

<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>

  <xsl:output method="text"/>
  
  <xsl:key name="kByID" match="DIRECT" use="CHARACTER_ID"/>
  <xsl:key name="kByTargetID" match="TARGET_CHARACTER_ID" use="."/>
  
    <xsl:variable name="vUniqueCharactersSending" 
                  select="LOG/DIRECT[generate-id() 
                                    = 
                                     generate-id(key('kByID',
                                                      CHARACTER_ID
                                                     )[1]
                                                 )
                                    ]"/>
                                    
    <xsl:variable name="vUniqueCharactersReceiving" 
                  select="LOG/DIRECT/TARGET_CHARACTER_ID
                                  [generate-id() 
                                    = 
                                     generate-id(key('kByTargetID',
                                                      .
                                                     )[1]
                                                 )
                                    ]"/>
                                    
    <xsl:variable name="vNumCharactersSending" 
                  select="count($vUniqueCharactersSending)"/>
    
    <xsl:variable name="vNumCharactersReceiving" 
                  select="count($vUniqueCharactersReceiving)"/>
    
    <xsl:variable name="vTotalSent"
                  select="count(LOG/DIRECT/CHARACTER_ID)"/>
                  
    <xsl:variable name="NL" select="'&#xA;'"/>
    
  <xsl:template match="/">
    <xsl:for-each select="$vUniqueCharactersSending">
      <xsl:value-of select="concat('CHARACTER_ID ',CHARACTER_ID,
                                   ' sent ',
                                   count(key('kByID',CHARACTER_ID)),
                                   ' messages, received ',
                                   count(key('kByTargetID',CHARACTER_ID)),
                                   $NL
                                   )"/>
    </xsl:for-each>
    
    <xsl:for-each select="$vUniqueCharactersReceiving
                                     [not(key('kByID', .))]">
    
      <xsl:value-of select="concat('CHARACTER_ID ', .,
                                   ' sent 0 messages, received ',
                                   count(key('kByTargetID',.)),
                                   $NL
                                   )"/>
    </xsl:for-each>
    
    <xsl:value-of select="$NL"/>
    <xsl:value-of select="concat('Number of characters having sent a message: ',
                                  $vNumCharactersSending,
                                  $NL
                                  )"/>
    
    <xsl:value-of select="concat('Number of characters having received a message: ',
                                  $vNumCharactersReceiving,
                                  $NL
                                  )"/>
    
    <xsl:value-of select="$NL"/>
    <xsl:value-of select="concat('Total sent: ',
                                  $vTotalSent,
                                  ', Average sent by a sending character: ',
                                  $vTotalSent div $vNumCharactersSending,
                                  '&#xA;',
                                  
                                  'Total received: ',
                                   $vTotalSent,
                                  ', Average received by a receiving character: ',
                                  $vTotalSent div $vNumCharactersReceiving,
                                  '&#xA;'
                                  
                                 )"/>
  </xsl:template>
</xsl:stylesheet>

When this is applied to the following xml sorce document:

<LOG>
  <DIRECT>
    <COMMUNICATION_TYPE>PAGETELL</COMMUNICATION_TYPE>
    <Invoc_serial>27</Invoc_serial>
    <Serial>3087908</Serial>
    <USAGE>TELL</USAGE>
    <MESSAGE_TYPE>EMOTE</MESSAGE_TYPE>
    <CHARACTER_ID>10010</CHARACTER_ID>
    <CHARACTER_STATUS>3</CHARACTER_STATUS>
    <LOCATION_ID>45040</LOCATION_ID>
    <TARGET_CHARACTER_ID>444444</TARGET_CHARACTER_ID>
    <TARGET_CHARACTER_STATUS>6</TARGET_CHARACTER_STATUS>
    <TARGET_CHARACTER_LOCATION_ID>23222</TARGET_CHARACTER_LOCATION_ID>
    <MESSAGE>hello</MESSAGE>
    <TIME>'Mon, 26 Nov 2001 15:40:29 +0000'</TIME>
  </DIRECT>

  <DIRECT>
    <COMMUNICATION_TYPE>PAGETELL</COMMUNICATION_TYPE>
    <Invoc_serial>27</Invoc_serial>
    <Serial>3087908</Serial>
    <USAGE>TELL</USAGE>
    <MESSAGE_TYPE>EMOTE</MESSAGE_TYPE>
    <CHARACTER_ID>10010</CHARACTER_ID>
    <CHARACTER_STATUS>3</CHARACTER_STATUS>
    <LOCATION_ID>45040</LOCATION_ID>
    <TARGET_CHARACTER_ID>444444</TARGET_CHARACTER_ID>
    <TARGET_CHARACTER_STATUS>6</TARGET_CHARACTER_STATUS>
    <TARGET_CHARACTER_LOCATION_ID>23222</TARGET_CHARACTER_LOCATION_ID>
    <MESSAGE>hello</MESSAGE>
    <TIME>'Mon, 26 Nov 2001 15:40:29 +0000'</TIME>
  </DIRECT>

  <DIRECT>
    <COMMUNICATION_TYPE>PAGETELL</COMMUNICATION_TYPE>
    <Invoc_serial>27</Invoc_serial>
    <Serial>3087908</Serial>
    <USAGE>TELL</USAGE>
    <MESSAGE_TYPE>EMOTE</MESSAGE_TYPE>
    <CHARACTER_ID>444444</CHARACTER_ID>
    <CHARACTER_STATUS>3</CHARACTER_STATUS>
    <LOCATION_ID>45040</LOCATION_ID>
    <TARGET_CHARACTER_ID>10010</TARGET_CHARACTER_ID>
    <TARGET_CHARACTER_STATUS>6</TARGET_CHARACTER_STATUS>
    <TARGET_CHARACTER_LOCATION_ID>23222</TARGET_CHARACTER_LOCATION_ID>
    <MESSAGE>hello</MESSAGE>
    <TIME>'Mon, 26 Nov 2001 15:40:29 +0000'</TIME>
  </DIRECT>

  <DIRECT>
    <COMMUNICATION_TYPE>PAGETELL</COMMUNICATION_TYPE>
    <Invoc_serial>27</Invoc_serial>
    <Serial>3087908</Serial>
    <USAGE>TELL</USAGE>
    <MESSAGE_TYPE>EMOTE</MESSAGE_TYPE>
    <CHARACTER_ID>50050</CHARACTER_ID>
    <CHARACTER_STATUS>3</CHARACTER_STATUS>
    <LOCATION_ID>45040</LOCATION_ID>
    <TARGET_CHARACTER_ID>60060</TARGET_CHARACTER_ID>
    <TARGET_CHARACTER_STATUS>6</TARGET_CHARACTER_STATUS>
    <TARGET_CHARACTER_LOCATION_ID>23222</TARGET_CHARACTER_LOCATION_ID>
    <MESSAGE>hello</MESSAGE>
    <TIME>'Mon, 26 Nov 2001 15:40:29 +0000'</TIME>
  </DIRECT></LOG>

The result is:

CHARACTER_ID 10010 sent 2 messages, received 1
CHARACTER_ID 444444 sent 1 messages, received 2
CHARACTER_ID 50050 sent 1 messages, received 0
CHARACTER_ID 60060 sent 0 messages, received 1

Number of characters having sent a message: 3
Number of characters having received a message: 3

Total sent: 4, Average sent by a sending character: 1.3333333333333332
Total received: 4, Average received by a receiving character: 1.3333333333333332


Cheers,
Dimitre.

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