LuminosityBlockBase.h

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#ifndef FWCore_Common_LuminosityBlockBase_h
#define FWCore_Common_LuminosityBlockBase_h

// -*- C++ -*-
//
// Package:     FWCore/Common
// Class  :     LuminosityBlockBase
//
//
// Original Author:  Eric Vaandering
//         Created:  Tue Jan 12 15:31:00 CDT 2010
//

#include "DataFormats/Common/interface/BasicHandle.h"
#include "DataFormats/Common/interface/ConvertHandle.h"
#include "DataFormats/Common/interface/Handle.h"
#include "DataFormats/Provenance/interface/LuminosityBlockAuxiliary.h"
#include "DataFormats/Provenance/interface/LuminosityBlockID.h"
#include "DataFormats/Provenance/interface/RunID.h"
#include "FWCore/Utilities/interface/InputTag.h"

namespace edm {

  class LuminosityBlockBase {
  public:
    LuminosityBlockBase();
    virtual ~LuminosityBlockBase();

    // AUX functions.
    LuminosityBlockNumber_t luminosityBlock() const { return luminosityBlockAuxiliary().luminosityBlock(); }

    RunNumber_t run() const { return luminosityBlockAuxiliary().run(); }

    LuminosityBlockID id() const { return luminosityBlockAuxiliary().id(); }

    Timestamp const& beginTime() const { return luminosityBlockAuxiliary().beginTime(); }
    Timestamp const& endTime() const { return luminosityBlockAuxiliary().endTime(); }

    virtual edm::LuminosityBlockAuxiliary const& luminosityBlockAuxiliary() const = 0;

    template <typename PROD>
    bool getByLabel(InputTag const& tag, Handle<PROD>& result) const;

  private:
    virtual BasicHandle getByLabelImpl(std::type_info const& iWrapperType,
                                       std::type_info const& iProductType,
                                       const InputTag& iTag) const = 0;
  };

  template <class T>
  bool LuminosityBlockBase::getByLabel(const InputTag& tag, Handle<T>& result) const {
    result.clear();
    BasicHandle bh = this->getByLabelImpl(typeid(Wrapper<T>), typeid(T), tag);
    result = convert_handle<T>(std::move(bh));
    if (result.failedToGet()) {
      return false;
    }
    return true;
  }

}  // namespace edm
#endif