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00001 #ifndef CandAlgos_ShallowCloneProducer_h 00002 #define CandAlgos_ShallowCloneProducer_h 00003 00016 #include "FWCore/Framework/interface/EDProducer.h" 00017 #include "FWCore/Framework/interface/Event.h" 00018 #include "FWCore/ParameterSet/interface/ParameterSet.h" 00019 #include "FWCore/Utilities/interface/InputTag.h" 00020 #include "DataFormats/Candidate/interface/ShallowCloneCandidate.h" 00021 00022 template<typename C> 00023 class ShallowCloneProducer : public edm::EDProducer { 00024 public: 00026 explicit ShallowCloneProducer( const edm::ParameterSet& ); 00028 ~ShallowCloneProducer(); 00029 00030 private: 00032 virtual void produce( edm::Event&, const edm::EventSetup& ); 00034 edm::InputTag src_; 00035 }; 00036 00037 template<typename C> 00038 ShallowCloneProducer<C>::ShallowCloneProducer( const edm::ParameterSet& par ) : 00039 src_( par.template getParameter<edm::InputTag>( "src" ) ) { 00040 produces<reco::CandidateCollection>(); 00041 } 00042 00043 template<typename C> 00044 ShallowCloneProducer<C>::~ShallowCloneProducer() { 00045 } 00046 00047 template<typename C> 00048 void ShallowCloneProducer<C>::produce( edm::Event& evt, const edm::EventSetup& ) { 00049 std::auto_ptr<reco::CandidateCollection> coll( new reco::CandidateCollection ); 00050 edm::Handle<C> masterCollection; 00051 evt.getByLabel( src_, masterCollection ); 00052 for( size_t i = 0; i < masterCollection->size(); ++i ) { 00053 reco::CandidateBaseRef masterClone( edm::Ref<C>( masterCollection, i ) ); 00054 coll->push_back( new reco::ShallowCloneCandidate( masterClone ) ); 00055 } 00056 evt.put( coll ); 00057 } 00058 00059 #endif
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