def normalize_uri(uri_or_options)
        if String === uri_or_options
          uri_or_options = Addressable::URI.parse(uri_or_options)
        end
        if Addressable::URI === uri_or_options
          return uri_or_options.normalize
        end

        adapter = uri_or_options.delete(:adapter)
        user = uri_or_options.delete(:username)
        password = uri_or_options.delete(:password)
        host = (uri_or_options.delete(:host) || "")
        port = uri_or_options.delete(:port)
        database = uri_or_options.delete(:database)
        query = uri_or_options.to_a.map { |pair| pair.join('=') }.join('&')
        query = nil if query == ""

        return Addressable::URI.new(
          adapter, user, password, host, port, database, query, nil
        )
      end