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#ifndef PhysicsTools_PatAlgos_PATSingleVertexSelector_h
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#define PhysicsTools_PatAlgos_PATSingleVertexSelector_h
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//
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// $Id: PATSingleVertexSelector.h,v 1.1 2008/07/22 12:47:02 gpetrucc Exp $
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//
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/**
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\class pat::PATSingleVertexSelector PATSingleVertexSelector.h "PhysicsTools/PatAlgos/plugins/PATSingleVertexSelector.h"
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\brief Produces a list containing a single vertex selected by some criteria
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\author Giovanni Petrucciani
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\version $Id: PATSingleVertexSelector.h,v 1.1 2008/07/22 12:47:02 gpetrucc Exp $
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*/
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#include "FWCore/Framework/interface/EDFilter.h"
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#include "FWCore/Framework/interface/Event.h"
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#include "FWCore/ParameterSet/interface/ParameterSet.h"
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#include "FWCore/ParameterSet/interface/InputTag.h"
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#include "PhysicsTools/Utilities/interface/StringCutObjectSelector.h"
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#include "DataFormats/VertexReco/interface/Vertex.h"
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#include "DataFormats/Candidate/interface/Candidate.h"
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namespace pat {
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class PATSingleVertexSelector : public edm::EDFilter {
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public:
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explicit PATSingleVertexSelector(const edm::ParameterSet & iConfig);
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~PATSingleVertexSelector();
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virtual bool filter(edm::Event & iEvent, const edm::EventSetup & iSetup);
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private:
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enum Mode { First, NearestToCand, FromCand, FromBeamSpot };
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typedef StringCutObjectSelector<reco::Vertex> VtxSel;
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typedef StringCutObjectSelector<reco::Candidate> CandSel;
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static Mode parseMode(const std::string &name) ;
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bool filter_(Mode mode, edm::Event & iEvent, const edm::EventSetup & iSetup) ;
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bool hasMode_(Mode mode) const ;
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// configurables
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std::vector<Mode> modes_; // mode + optional fallbacks
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edm::InputTag vertices_;
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std::vector<edm::InputTag> candidates_;
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std::auto_ptr<VtxSel > vtxPreselection_;
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std::auto_ptr<CandSel> candPreselection_;
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edm::InputTag beamSpot_;
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// transient data. meaningful while 'filter()' is on the stack
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std::vector<const reco::Vertex *> selVtxs_;
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const reco::Candidate * bestCand_;
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};
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}
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#endif
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