DetPedestalRetrievalAlg.h

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#ifndef WEBDBI_DETPEDESTALRETRIEVALALG_H
#define WEBDBI_DETPEDESTALRETRIEVALALG_H

// C/C++ standard libraries
#include <string>

// LArSoft libraries
#include "larevt/CalibrationDBI/IOVData/DetPedestal.h"
#include "larevt/CalibrationDBI/IOVData/IOVDataConstants.h"
#include "larevt/CalibrationDBI/IOVData/Snapshot.h"
#include "larevt/CalibrationDBI/Interface/CalibrationDBIFwd.h"
#include "larevt/CalibrationDBI/Interface/DetPedestalProvider.h"
#include "larevt/CalibrationDBI/Providers/DatabaseRetrievalAlg.h"

namespace fhicl {
  class ParameterSet;
}

namespace lariov {

  class DetPedestalRetrievalAlg : public DatabaseRetrievalAlg, public DetPedestalProvider {

  public:
    DetPedestalRetrievalAlg(const std::string& foldername,
                            const std::string& url,
                            const std::string& tag = "");

    DetPedestalRetrievalAlg(fhicl::ParameterSet const& p);

    void Reconfigure(fhicl::ParameterSet const& p) override;

    void UpdateTimeStamp(DBTimeStamp_t ts);

    bool Update(DBTimeStamp_t ts);

    const DetPedestal& Pedestal(DBChannelID_t ch) const;
    float PedMean(DBChannelID_t ch) const override;
    float PedRms(DBChannelID_t ch) const override;
    float PedMeanErr(DBChannelID_t ch) const override;
    float PedRmsErr(DBChannelID_t ch) const override;

    //hardcoded information about database folder - useful for debugging cross checks
    static constexpr unsigned int NCOLUMNS = 5;
    static constexpr const char* FIELD_NAMES[NCOLUMNS] = {"channel",
                                                          "mean",
                                                          "mean_err",
                                                          "rms",
                                                          "rms_err"};
    static constexpr const char* FIELD_TYPES[NCOLUMNS] = {"unsigned int",
                                                          "float",
                                                          "float",
                                                          "float",
                                                          "float"};

  private:

    bool DBUpdate() const; // Uses current event time.
    bool DBUpdate(DBTimeStamp_t ts) const;

    // Time stamps.

    DBTimeStamp_t fEventTimeStamp;           // Most recently seen time stamp.
    mutable DBTimeStamp_t fCurrentTimeStamp; // Time stamp of cached data.

    DataSource::ds fDataSource;
    mutable Snapshot<DetPedestal> fData;
  };
} //end namespace lariov

#endif
 // end of doxygen group