ECFAdder.h

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#ifndef RecoJets_JetProducers_ECFAdder_h
#define RecoJets_JetProducers_ECFAdder_h

#include <memory>
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/stream/EDProducer.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/InputTag.h"
#include "DataFormats/JetReco/interface/Jet.h"
#include "DataFormats/Common/interface/ValueMap.h"
#include "fastjet/contrib/EnergyCorrelator.hh"
#include "CommonTools/UtilAlgos/interface/StringCutObjectSelector.h"

class ECFAdder : public edm::stream::EDProducer<> {
public:
  explicit ECFAdder(const edm::ParameterSet& iConfig);

  void produce(edm::Event& iEvent, const edm::EventSetup& iSetup) override;
  float getECF(unsigned index, const edm::Ptr<reco::Jet>& object) const;

  static void fillDescriptions(edm::ConfigurationDescriptions& descriptions);

private:
  edm::InputTag src_;
  edm::EDGetTokenT<edm::View<reco::Jet>> src_token_;
  std::vector<unsigned> Njets_;
  std::vector<std::string> cuts_;
  std::string ecftype_;  // Options: ECF (or empty); C; D; N; M; U;
  std::vector<std::string> variables_;
  double alpha_;
  double beta_;

  std::vector<std::shared_ptr<fastjet::FunctionOfPseudoJet<double>>> routine_;
  std::vector<StringCutObjectSelector<reco::Jet>> selectors_;
};

#endif