module RailsConnector

  class ObjData
    def value_of(attribute_name)
      value_and_type_of(attribute_name).first
    end

    def type_of(attribute_name)
      value_and_type_of(attribute_name).second
    end

    def value_and_type_of(attribute_name)
      raise "implement in subclass"
    end

    def has_custom_attribute?(name)
      raise "implement in subclass"
    end

    private

    def type_of_internal(key)
      case key
      when "_text_links"
        "linklist"
      when "_valid_from", "_valid_until", "_last_changed"
        "date"
      when "title", "body"
        "html"
      when "blob"
        "binary"
      else
        nil
      end
    end

    def default_attribute_value(attribute_type)
      case attribute_type
      when "linklist"
        []
      when "multienum"
        []
      else
        nil
      end
    end

  end

end