plp::DataRange *get_max(EnumSummaryPeriod period_type_param);
plp::DataRange *get_min(EnumSummaryPeriod period_type_param);
protected:
plp::DataRange *get_max(EnumSummaryPeriod period_type_param);
plp::DataRange *get_min(EnumSummaryPeriod period_type_param);
protected:
static std::string get_dir_name(std::string device_id_param,
Date *date_time_param,
EnumSummaryPeriod period_type_param,
static std::string get_dir_name(std::string device_id_param,
Date *date_time_param,
EnumSummaryPeriod period_type_param,