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#ifndef PhysicsTools_PatAlgos_KinResolutionsLoader_h
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#define PhysicsTools_PatAlgos_KinResolutionsLoader_h
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#include "DataFormats/PatCandidates/interface/PATObject.h"
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#include "FWCore/Framework/interface/Event.h"
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#include "FWCore/Framework/interface/EventSetup.h"
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#include "FWCore/Framework/interface/ESHandle.h"
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#include "FWCore/ParameterSet/interface/ParameterSet.h"
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#include "PhysicsTools/PatAlgos/interface/KinematicResolutionProvider.h"
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namespace pat { namespace helper {
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class KinResolutionsLoader {
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public:
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/// Empty constructor
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KinResolutionsLoader() {}
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/// Constructor from a PSet
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KinResolutionsLoader(const edm::ParameterSet &iConfig) ;
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/// 'true' if this there is at least one efficiency configured
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bool enabled() const { return !patlabels_.empty(); }
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/// To be called for each new event, reads in the EventSetup object
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void newEvent(const edm::Event &event, const edm::EventSetup &setup) const ;
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/// Sets the efficiencies for this object, using the reference to the original objects
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template<typename T>
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void setResolutions( pat::PATObject<T> &obj ) const ;
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private:
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/// Labels of the resolutions in PAT
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std::vector<std::string> patlabels_;
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/// Labels of the KinematicResolutionProvider in the EventSetup
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std::vector<std::string> eslabels_;
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/// Handles to the EventSetup
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mutable std::vector<edm::ESHandle<KinematicResolutionProvider> > handles_;
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}; // class
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template<typename T>
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void
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KinResolutionsLoader::setResolutions( pat::PATObject<T> &obj ) const
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{
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for (size_t i = 0, n = patlabels_.size(); i < n; ++i) {
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obj.setKinResolution( handles_[i]->getResolution(obj), patlabels_[i]);
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}
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}
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} }
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#endif
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