# File lib/cgikit/application.rb, line 526
    def set_adapter
      if @set_adapter_and_handler then return end
      @adapter = create_adapter
      @set_adapter_and_handler = true
      unless @logger then
        if level = @log_options[:level] then
          require 'logger'
          case level
          when :fatal
            level = Logger::FATAL
          when :error
            level = Logger::ERROR
          when :warn
            level = Logger::WARN
          when :info
            level = Logger::INFO
          else
            level = Logger::DEBUG
          end
          if file = @log_options[:file] then
            out = File.open(file, 'a+')
          else
            out = @log_options[:out]
          end
          @logger = Logger.new(out, @log_options[:shift_age] || 0,
                               @log_options[:shift_size] || 1048576)
          @logger.progname = @log_options[:name]
        else
          @logger = DummyLogger.new
        end
      end
    end