PackedTriggerPrescales.h

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#ifndef _DataFormats_PatCandidates_PackedTriggerPrescales_H_
#define _DataFormats_PatCandidates_PackedTriggerPrescales_H_

#include "DataFormats/Common/interface/TriggerResults.h"
#include "FWCore/Common/interface/TriggerNames.h"
#include "DataFormats/Common/interface/Ref.h"

namespace pat {

  class PackedTriggerPrescales {
  public:
    PackedTriggerPrescales() : triggerNames_(nullptr) {}
    PackedTriggerPrescales(const edm::Handle<edm::TriggerResults> &handle);
    ~PackedTriggerPrescales() {}

    // get prescale by index.
    int getPrescaleForIndex(int index) const;
    // get prescale by name or name prefix (if setTriggerNames was called)
    int getPrescaleForName(const std::string &name, bool prefixOnly = false) const;

    // return the TriggerResults associated with this
    const edm::TriggerResults &triggerResults() const { return *edm::getProduct<edm::TriggerResults>(triggerResults_); }

    // use this method first if you want to be able to access the prescales by name
    // you can get the TriggerNames from the TriggerResults and the Event (edm or fwlite)
    void setTriggerNames(const edm::TriggerNames &names) { triggerNames_ = &names; }

    // set that the trigger of given index has a given prescale
    void addPrescaledTrigger(int index, int prescale);

  protected:
    std::vector<int> prescaleValues_;
    edm::RefCore triggerResults_;
    const edm::TriggerNames *triggerNames_;
  };

}  // namespace pat

#endif