/data/refman/pasoursint/CMSSW_5_3_3/src/DPGAnalysis/SiStripTools/plugins/MultiplicityProducer.cc

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// -*- C++ -*-
//
// Package:    MultiplicityProducer
// Class:      MultiplicityProducer
// 
//
// Original Author:  Andrea Venturi
//         Created:  Fri Dec 04 2009
//
//


// system include files
#include <memory>
#include <string>
#include <map>
#include <vector>

// user include files
#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/EDProducer.h"

#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/MakerMacros.h"

#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/InputTag.h"

#include "DataFormats/DetId/interface/DetId.h"
#include "DataFormats/Common/interface/DetSetVectorNew.h"
#include "DataFormats/Common/interface/DetSetVector.h"

#include "DataFormats/SiStripCluster/interface/SiStripCluster.h"
#include "DataFormats/SiStripDigi/interface/SiStripDigi.h"
#include "DataFormats/SiPixelCluster/interface/SiPixelCluster.h"
//
// class decleration
//
template <class T>
class MultiplicityProducer : public edm::EDProducer {
   public:
      explicit MultiplicityProducer(const edm::ParameterSet&);
      ~MultiplicityProducer();

   private:
      virtual void beginJob() ;
      virtual void produce(edm::Event&, const edm::EventSetup&);
      virtual void endJob() ;
      
      // ----------member data ---------------------------

  edm::InputTag _collection;
  std::map<unsigned int, std::string> _subdets;

};

//
// constants, enums and typedefs
//


//
// static data member definitions
//

//
// constructors and destructor
//
template <class T>
MultiplicityProducer<T>::MultiplicityProducer(const edm::ParameterSet& iConfig):
  _collection(iConfig.getParameter<edm::InputTag>("clusterdigiCollection")),
  _subdets()
{

  produces<std::map<unsigned int,int> >();

   //now do what ever other initialization is needed

  std::vector<edm::ParameterSet> wantedsubds(iConfig.getParameter<std::vector<edm::ParameterSet> >("wantedSubDets"));
                                             
  for(std::vector<edm::ParameterSet>::iterator ps=wantedsubds.begin();ps!=wantedsubds.end();++ps) {
    _subdets[ps->getParameter<unsigned int>("detSelection")] = ps->getParameter<std::string>("detLabel");
  }
}

template <class T>
MultiplicityProducer<T>::~MultiplicityProducer()
{
 
   // do anything here that needs to be done at desctruction time
   // (e.g. close files, deallocate resources etc.)

}


//
// member functions
//

// ------------ method called to produce the data  ------------
template <class T>
void
MultiplicityProducer<T>::produce(edm::Event& iEvent, const edm::EventSetup& iSetup)
{

  LogDebug("Multiplicity") << " Ready to loop";

  using namespace edm;

  std::auto_ptr<std::map<unsigned int,int> > mults(new std::map<unsigned int,int> );
  
  
  Handle<T> digis;
  iEvent.getByLabel(_collection,digis);
  
  for(std::map<unsigned int,std::string>::const_iterator sdet=_subdets.begin();sdet!=_subdets.end();++sdet) { (*mults)[sdet->first]=0; }

  
  for(typename T::const_iterator det = digis->begin();det!=digis->end();++det) {
    
    if(_subdets.find(0)!=_subdets.end()) (*mults)[0]+= det->size();

    DetId detid(det->detId());
    unsigned int subdet = detid.subdetId();

    if(_subdets.find(subdet)!=_subdets.end()) (*mults)[subdet] += det->size();


  }
  
  
  for(std::map<unsigned int,int>::const_iterator it=mults->begin();it!=mults->end();++it) {
    LogDebug("Multiplicity") << " Found " << it->second << " digis/clusters in " << it->first << " " << _subdets[it->first];
  }
  
  iEvent.put(mults);
  
}

// ------------ method called once each job just before starting event loop  ------------
template <class T>
void 
MultiplicityProducer<T>::beginJob()
{
}

// ------------ method called once each job just after ending the event loop  ------------
template <class T>
void 
MultiplicityProducer<T>::endJob() {
}

//define this as a plug-in
typedef MultiplicityProducer<edmNew::DetSetVector<SiStripCluster> > SiStripClusterMultiplicityProducer;
typedef MultiplicityProducer<edmNew::DetSetVector<SiPixelCluster> > SiPixelClusterMultiplicityProducer;
typedef MultiplicityProducer<edm::DetSetVector<SiStripDigi> > SiStripDigiMultiplicityProducer;


DEFINE_FWK_MODULE(SiStripClusterMultiplicityProducer);
DEFINE_FWK_MODULE(SiPixelClusterMultiplicityProducer);
DEFINE_FWK_MODULE(SiStripDigiMultiplicityProducer);