# File lib/log4r/formatter/log4jxmlformatter.rb, line 16
    def format(logevent)
      logger = logevent.fullname.gsub('::', '.')
      timestamp = (Time.now.to_f * 1000).to_i
      level = LNAMES[logevent.level]
      message = format_object(logevent.data)
      exception = message if logevent.data.kind_of? Exception
      file, line, method = parse_caller(logevent.tracer[0]) if logevent.tracer
      
      builder = Builder::XmlMarkup.new
      xml = builder.log4j :event, :logger => logger,
                                  :timestamp => timestamp,
                                  :level => level,
                                  :thread => '' do |e|
              e.log4j :NDC, NDC.get
              e.log4j :message, message
              e.log4j :throwable, exception if exception
              e.log4j :locationInfo, :class => '',
                                     :method => method,
                                     :file => file,
                                     :line => line
              e.log4j :properties do |p|
                MDC.get_context.each do |key, value|
                  p.log4j :data, :name => key, :value => value
                end
              end
            end
      xml
    end