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#ifndef RecoAlgos_TrackFullCloneSelectorBase_h
#define RecoAlgos_TrackFullCloneSelectorBase_h
/** \class TrackFullCloneSelectorBase
*
* selects a subset of a track collection, copying extra information on demand
*
* \author Giovanni Petrucciani
*
* \version $Revision: 1.3 $
*
* $Id: TrackFullCloneSelectorBase.h,v 1.3 2010/02/11 00:10:51 wmtan Exp $
*
*/
#include <algorithm>
#include <map>
#include <memory>
#include <utility>
#include <vector>
#include "DataFormats/TrackReco/interface/Track.h"
#include "DataFormats/TrackReco/interface/TrackExtra.h"
#include "DataFormats/TrackReco/interface/TrackFwd.h"
#include "FWCore/Framework/interface/ConsumesCollector.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/stream/EDProducer.h"
#include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/ParameterSet/interface/ParameterSetDescription.h"
#include "FWCore/Utilities/interface/InputTag.h"
#include "TrackingTools/PatternTools/interface/TrajTrackAssociation.h"
#include "TrackingTools/PatternTools/interface/Trajectory.h"
namespace reco {
namespace modules {
template <typename Selector>
class TrackFullCloneSelectorBase : public edm::stream::EDProducer<> {
public:
/// constructor
explicit TrackFullCloneSelectorBase(const edm::ParameterSet& cfg)
: hSrcTrackToken_(consumes<reco::TrackCollection>(cfg.template getParameter<edm::InputTag>("src"))),
hTrajToken_(mayConsume<std::vector<Trajectory> >(cfg.template getParameter<edm::InputTag>("src"))),
hTTAssToken_(mayConsume<TrajTrackAssociationCollection>(cfg.template getParameter<edm::InputTag>("src"))),
copyExtras_(cfg.template getUntrackedParameter<bool>("copyExtras", false)),
copyTrajectories_(cfg.template getUntrackedParameter<bool>("copyTrajectories", false)),
selector_(cfg, consumesCollector()) {
std::string alias(cfg.getParameter<std::string>("@module_label"));
produces<reco::TrackCollection>().setBranchAlias(alias + "Tracks");
if (copyExtras_) {
produces<reco::TrackExtraCollection>().setBranchAlias(alias + "TrackExtras");
produces<TrackingRecHitCollection>().setBranchAlias(alias + "RecHits");
if (copyTrajectories_) {
produces<std::vector<Trajectory> >().setBranchAlias(alias + "Trajectories");
produces<TrajTrackAssociationCollection>().setBranchAlias(alias + "TrajectoryTrackAssociations");
}
}
}
/// destructor
~TrackFullCloneSelectorBase() override = default;
static void fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
edm::ParameterSetDescription desc;
desc.add<edm::InputTag>("src", edm::InputTag("generalTracks"));
desc.addUntracked<bool>("copyExtras", false);
desc.addUntracked<bool>("copyTrajectories", false);
Selector::fillPSetDescription(desc);
descriptions.addWithDefaultLabel(desc);
}
private:
/// process one event
void produce(edm::Event& evt, const edm::EventSetup& es) override {
edm::Handle<reco::TrackCollection> hSrcTrack;
evt.getByToken(hSrcTrackToken_, hSrcTrack);
selTracks_ = std::make_unique<reco::TrackCollection>();
if (copyExtras_) {
selTrackExtras_ = std::make_unique<reco::TrackExtraCollection>();
selHits_ = std::make_unique<TrackingRecHitCollection>();
}
TrackRefProd rTracks = evt.template getRefBeforePut<TrackCollection>();
TrackingRecHitRefProd rHits;
TrackExtraRefProd rTrackExtras;
if (copyExtras_) {
rHits = evt.template getRefBeforePut<TrackingRecHitCollection>();
rTrackExtras = evt.template getRefBeforePut<TrackExtraCollection>();
}
typedef reco::TrackRef::key_type TrackRefKey;
std::map<TrackRefKey, reco::TrackRef> goodTracks;
TrackRefKey current = 0;
selector_.init(evt, es);
auto tkBegin = hSrcTrack->begin();
for (reco::TrackCollection::const_iterator it = tkBegin, ed = hSrcTrack->end(); it != ed; ++it, ++current) {
const reco::Track& trk = *it;
const reco::TrackRef tkref(hSrcTrack, std::distance(tkBegin, it));
if (!selector_(tkref))
continue;
selTracks_->push_back(Track(trk)); // clone and store
if (!copyExtras_)
continue;
// TrackExtras
selTrackExtras_->push_back(TrackExtra(trk.outerPosition(),
trk.outerMomentum(),
trk.outerOk(),
trk.innerPosition(),
trk.innerMomentum(),
trk.innerOk(),
trk.outerStateCovariance(),
trk.outerDetId(),
trk.innerStateCovariance(),
trk.innerDetId(),
trk.seedDirection()));
selTracks_->back().setExtra(TrackExtraRef(rTrackExtras, selTrackExtras_->size() - 1));
TrackExtra& tx = selTrackExtras_->back();
// TrackingRecHits
auto const firstHitIndex = selHits_->size();
for (auto const& hit : trk.recHits())
selHits_->push_back(hit->clone());
tx.setHits(rHits, firstHitIndex, selHits_->size() - firstHitIndex);
tx.setTrajParams(trk.extra()->trajParams(), trk.extra()->chi2sX5());
assert(tx.trajParams().size() == tx.recHitsSize());
if (copyTrajectories_) {
goodTracks[current] = reco::TrackRef(rTracks, selTracks_->size() - 1);
}
}
if (copyTrajectories_) {
edm::Handle<std::vector<Trajectory> > hTraj;
edm::Handle<TrajTrackAssociationCollection> hTTAss;
evt.getByToken(hTTAssToken_, hTTAss);
evt.getByToken(hTrajToken_, hTraj);
edm::RefProd<std::vector<Trajectory> > TrajRefProd = evt.template getRefBeforePut<std::vector<Trajectory> >();
selTrajs_ = std::make_unique<std::vector<Trajectory> >();
selTTAss_ = std::make_unique<TrajTrackAssociationCollection>();
for (size_t i = 0, n = hTraj->size(); i < n; ++i) {
edm::Ref<std::vector<Trajectory> > trajRef(hTraj, i);
TrajTrackAssociationCollection::const_iterator match = hTTAss->find(trajRef);
if (match != hTTAss->end()) {
const edm::Ref<reco::TrackCollection>& trkRef = match->val;
TrackRefKey oldKey = trkRef.key();
std::map<TrackRefKey, reco::TrackRef>::iterator getref = goodTracks.find(oldKey);
if (getref != goodTracks.end()) {
// do the clone
selTrajs_->push_back(Trajectory(*trajRef));
selTTAss_->insert(edm::Ref<std::vector<Trajectory> >(TrajRefProd, selTrajs_->size() - 1),
getref->second);
}
}
}
}
evt.put(std::move(selTracks_));
if (copyExtras_) {
evt.put(std::move(selTrackExtras_));
evt.put(std::move(selHits_));
if (copyTrajectories_) {
evt.put(std::move(selTrajs_));
evt.put(std::move(selTTAss_));
}
}
}
/// source collection label
edm::EDGetTokenT<reco::TrackCollection> hSrcTrackToken_;
edm::EDGetTokenT<std::vector<Trajectory> > hTrajToken_;
edm::EDGetTokenT<TrajTrackAssociationCollection> hTTAssToken_;
/// copy only the tracks, not extras and rechits (for AOD)
bool copyExtras_;
/// copy also trajectories and trajectory->track associations
bool copyTrajectories_;
/// filter event
Selector selector_;
// some space
std::unique_ptr<reco::TrackCollection> selTracks_;
std::unique_ptr<reco::TrackExtraCollection> selTrackExtras_;
std::unique_ptr<TrackingRecHitCollection> selHits_;
std::unique_ptr<std::vector<Trajectory> > selTrajs_;
std::unique_ptr<TrajTrackAssociationCollection> selTTAss_;
};
} // namespace modules
} // namespace reco
#endif
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