# File lib/adaptation/xmlblaster/xmlblaster_callback_client.rb, line 76
  def update( *args )
    key =args[0]
    content = args[1]
    qos = args[2]
    @audit.info( "XMLBlasterCallbackClient: Received UPDATE." )

    begin
      qos_xml = REXML::Document.new args[2]
    rescue => e
      @audit.warn( "XMLBlasterCallbackClient: Could not open QOS of message." )
    end

    if qos_xml.elements['qos'].elements['state'] != nil then
      begin
        value = qos_xml.elements['qos'].elements['state'].attributes['id'].to_s
        if value == "ERASED" then
          @audit.debug( "XMLBlasterCallbackClient: TOPIC GOT ERASED" )
        else
          @audit.debug( "XMLBlasterCallbackClient: SOMETHING STRANGE" )
        end
      rescue  => e
        @audit.warn( "XMLBlasterCallbackClient: Error: #{e}" )
      end
    end

    begin
      key_xml = REXML::Document.new key
      topic = key_xml.elements['key'].attributes["oid"]
      @audit.debug( "Topic #{topic}" )
      puts "-----------------------------------"
      puts "Received message in topic: #{topic}"
      puts "#{content}"
      puts "-----------------------------------"
      # process message
      Adaptation::Base.new.process content
    rescue => e
      @audit.warn( "XMLBlasterCallbackClient: Could not access content of message." )
    end   

    return "<qos><state>OK</state></qos>"
  end