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ObjectViewCleaner.cc
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ObjectViewCleaner.cc
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/*****************************************************************************
* Project: CMS detector at the CERN
*
* Package: Validation/RecoTau
*
* Description:
* - Cleans a given object collection of other
* cross-object candidates using deltaR-matching.
* - For example: can clean a muon collection by
* removing all jets in the muon collection.
* - Saves collection of the reference vectors of cleaned objects.
*****************************************************************************/
#include "CommonTools/Utils/interface/StringCutObjectSelector.h"
#include "DataFormats/Candidate/interface/Candidate.h"
#include "DataFormats/Candidate/interface/CandidateFwd.h"
#include "DataFormats/Common/interface/View.h"
#include "DataFormats/EgammaCandidates/interface/Electron.h"
#include "DataFormats/EgammaCandidates/interface/GsfElectron.h"
#include "DataFormats/EgammaCandidates/interface/Photon.h"
#include "DataFormats/JetReco/interface/Jet.h"
#include "DataFormats/Math/interface/deltaR.h"
#include "DataFormats/MuonReco/interface/Muon.h"
#include "DataFormats/TrackReco/interface/Track.h"
#include "FWCore/Framework/interface/stream/EDProducer.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/MakerMacros.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/EDGetToken.h"
#include "FWCore/Utilities/interface/InputTag.h"
#include <memory>
#include <sstream>
#include <vector>
namespace {
// Job-level data
struct Counters {
explicit Counters(std::string const& label) : moduleLabel{label} {}
std::string const moduleLabel;
mutable std::atomic<std::size_t> nObjectsTot {};
mutable std::atomic<std::size_t> nObjectsClean {};
};
template <typename T>
class ObjectViewCleaner : public edm::stream::EDProducer<edm::GlobalCache<Counters>> {
public:
explicit ObjectViewCleaner(edm::ParameterSet const&, Counters const*);
void produce(edm::Event&, edm::EventSetup const&) override;
static auto initializeGlobalCache(edm::ParameterSet const& iConfig)
{
return std::make_unique<Counters>(iConfig.getParameter<std::string>("@module_label"));
}
static void globalEndJob(Counters const*);
private:
// member data
edm::EDGetTokenT<edm::View<T>> srcCands_;
std::vector<edm::EDGetTokenT<edm::View<reco::Candidate>>> srcObjectsToRemove_;
double deltaRMin_;
StringCutObjectSelector<T,true> objKeepCut_; // lazy parsing, to allow cutting on variables not in reco::Candidate class
StringCutObjectSelector<reco::Candidate,true> objRemoveCut_; // lazy parsing, to allow cutting on variables
auto tagsToTokens(std::vector<edm::InputTag> const&) -> decltype(srcObjectsToRemove_);
bool isIsolated(edm::Event const&, T const&) const;
};
using namespace std;
template<typename T>
ObjectViewCleaner<T>::ObjectViewCleaner(edm::ParameterSet const& iConfig, Counters const*)
: srcCands_{consumes<edm::View<T>>(iConfig.getParameter<edm::InputTag>("srcObject"))}
, srcObjectsToRemove_{tagsToTokens(iConfig.getParameter<vector<edm::InputTag>>("srcObjectsToRemove"))}
, deltaRMin_{iConfig.getParameter<double>("deltaRMin")}
, objKeepCut_{iConfig.existsAs<std::string>("srcObjectSelection") ? iConfig.getParameter<std::string>("srcObjectSelection") : "", true}
, objRemoveCut_{iConfig.existsAs<std::string>("srcObjectsToRemoveSelection") ? iConfig.getParameter<std::string>("srcObjectsToRemoveSelection") : "", true}
{
produces<edm::RefToBaseVector<T>>();
}
//______________________________________________________________________________
template <typename T>
void ObjectViewCleaner<T>::produce(edm::Event& iEvent, edm::EventSetup const&)
{
edm::Handle<edm::View<T>> candidates;
iEvent.getByToken(srcCands_,candidates);
globalCache()->nObjectsTot += candidates->size();
auto cleanObjects = std::make_unique<edm::RefToBaseVector<T>>();
for (unsigned int iCand {}; iCand < candidates->size(); ++iCand) {
auto const& candidate = candidates->at(iCand);
if (objKeepCut_(candidate) && isIsolated(iEvent, candidate)) {
cleanObjects->push_back(candidates->refAt(iCand));
}
}
globalCache()->nObjectsClean += cleanObjects->size();
iEvent.put(std::move(cleanObjects));
}
//______________________________________________________________________________
template <typename T>
void ObjectViewCleaner<T>::globalEndJob(Counters const* counters)
{
ostringstream oss;
oss << "nObjectsTot=" << counters->nObjectsTot << " nObjectsClean=" << counters->nObjectsClean
<< " fObjectsClean=" << 100*(counters->nObjectsClean/static_cast<double>(counters->nObjectsTot)) << "%\n";
edm::LogInfo("ObjectViewCleaner") << "++++++++++++++++++++++++++++++++++++++++++++++++++\n"
<< counters->moduleLabel << "(ObjectViewCleaner) SUMMARY:\n"
<< oss.str() << '\n'
<< "++++++++++++++++++++++++++++++++++++++++++++++++++";
}
//______________________________________________________________________________
template <typename T>
bool ObjectViewCleaner<T>::isIsolated(edm::Event const& iEvent, T const& candidate) const
{
for (auto const& srcObject : srcObjectsToRemove_) {
edm::Handle<edm::View<reco::Candidate>> objects;
iEvent.getByToken(srcObject, objects);
for (unsigned int iObj {}; iObj < objects->size() ; ++iObj) {
auto const& obj = objects->at(iObj);
if (!objRemoveCut_(obj)) continue;
if (reco::deltaR(candidate,obj) < deltaRMin_) {
return false;
}
}
}
return true;
};
//______________________________________________________________________________
template <typename T>
auto ObjectViewCleaner<T>::tagsToTokens(std::vector<edm::InputTag> const& tags) -> decltype(srcObjectsToRemove_)
{
std::vector<edm::EDGetTokenT<edm::View<reco::Candidate>>> result;
std::transform(std::cbegin(tags), std::cend(tags), std::back_inserter(result),
[this](auto const& tag) { return this->consumes<edm::View<reco::Candidate>>(tag); });
return result;
}
} // anonymous namespace
////////////////////////////////////////////////////////////////////////////////
// plugin definitions
////////////////////////////////////////////////////////////////////////////////
typedef ObjectViewCleaner<reco::Candidate> TauValCandViewCleaner;
typedef ObjectViewCleaner<reco::Jet> TauValJetViewCleaner;
typedef ObjectViewCleaner<reco::Muon> TauValMuonViewCleaner;
typedef ObjectViewCleaner<reco::GsfElectron> TauValGsfElectronViewCleaner;
typedef ObjectViewCleaner<reco::Electron> TauValElectronViewCleaner;
typedef ObjectViewCleaner<reco::Photon> TauValPhotonViewCleaner;
typedef ObjectViewCleaner<reco::Track> TauValTrackViewCleaner;
DEFINE_FWK_MODULE(TauValCandViewCleaner);
DEFINE_FWK_MODULE(TauValJetViewCleaner);
DEFINE_FWK_MODULE(TauValMuonViewCleaner);
DEFINE_FWK_MODULE(TauValGsfElectronViewCleaner);
DEFINE_FWK_MODULE(TauValElectronViewCleaner);
DEFINE_FWK_MODULE(TauValPhotonViewCleaner);
DEFINE_FWK_MODULE(TauValTrackViewCleaner);