TrackCollectionTokens.h

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#ifndef TrackingToolsPatternToolsTrackCollectionTokens_H
#define TrackingToolsPatternToolsTrackCollectionTokens_H

#include "FWCore/Framework/interface/ConsumesCollector.h"
#include "FWCore/Utilities/interface/InputTag.h"

#include "DataFormats/TrackReco/interface/TrackFwd.h"
#include "TrackingTools/PatternTools/interface/Trajectory.h"
#include "TrackingTools/PatternTools/interface/TrajTrackAssociation.h"

#include "FWCore/Framework/interface/Event.h"

struct TrackCollectionTokens {
  TrackCollectionTokens(edm::InputTag const& tag, edm::ConsumesCollector&& iC)
      : hTrackToken_(iC.consumes<reco::TrackCollection>(tag)),
        hTrajToken_(iC.mayConsume<std::vector<Trajectory>>(tag)),
        hIndToken_(iC.mayConsume<std::vector<int>>(tag)),
        hTTAssToken_(iC.mayConsume<TrajTrackAssociationCollection>(tag)) {}

  edm::EDGetTokenT<reco::TrackCollection> hTrackToken_;
  edm::EDGetTokenT<std::vector<Trajectory>> hTrajToken_;
  edm::EDGetTokenT<std::vector<int>> hIndToken_;
  edm::EDGetTokenT<TrajTrackAssociationCollection> hTTAssToken_;

  reco::TrackCollection const& tracks(edm::Event& evt) const {
    edm::Handle<reco::TrackCollection> h;
    evt.getByToken(hTrackToken_, h);
    return *h;
  }

  std::vector<Trajectory> const& trajectories(edm::Event& evt) const {
    edm::Handle<std::vector<Trajectory>> h;
    evt.getByToken(hTrajToken_, h);
    return *h;
  }

  std::vector<int> const& indicesInput(edm::Event& evt) const {
    edm::Handle<std::vector<int>> h;
    evt.getByToken(hIndToken_, h);
    return *h;
  }
};

#endif