# File lib/mongo/protocol/update.rb, line 54
      def initialize(database, collection, selector, update, options = {})
        @database    = database
        @collection  = collection
        @namespace   = "#{database}.#{collection}"
        @selector    = selector
        @update      = update
        @flags       = options[:flags] || []
        @upconverter = Upconverter.new(collection, selector, update, flags)
        super
      end