/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_5_3_14/src/DQMOffline/PFTau/plugins/PFDQMEventSelector.cc

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#include "DQMOffline/PFTau/plugins/PFDQMEventSelector.h" 

#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/Framework/interface/Event.h"
#include "DataFormats/Common/interface/Handle.h"

#include "DQMServices/Core/interface/DQMStore.h"
#include "DQMServices/Core/interface/MonitorElement.h"
#include "FWCore/ServiceRegistry/interface/Service.h"

#include <iostream>
 
//
// -- Constructor
//
PFDQMEventSelector::PFDQMEventSelector( const edm::ParameterSet & pset ) {
   verbose_       = pset.getParameter<bool>( "DebugOn" );
   inputFileName_ = pset.getParameter<std::string>("InputFileName");
   folderNames_   = pset.getParameter< std::vector<std::string> >("FolderNames");

   nEvents_         = 0;
   nSelectedEvents_ = 0;
   fileOpened_      = false;
}
//
// -- Destructor
//
PFDQMEventSelector::~PFDQMEventSelector() {
}
 
//
// -- BeginJob
//
void PFDQMEventSelector::beginJob() {

  dqmStore_ = edm::Service<DQMStore>().operator->();
  fileOpened_ = openInputFile();
}
//
// -- Event Filtering
//
bool PFDQMEventSelector::filter( edm::Event & iEvent, edm::EventSetup const& iSetup) {
  
  nEvents_++;
  if (!fileOpened_) return false;

  unsigned int runNb  = iEvent.id().run();
  unsigned int evtNb  = iEvent.id().event();
  unsigned int lumiNb = iEvent.id().luminosityBlock();
  std::ostringstream eventid_str;
  eventid_str << runNb << "_"<< evtNb << "_" << lumiNb;
  
  for (std::vector<std::string>::const_iterator ifolder = folderNames_.begin();
                                    ifolder != folderNames_.end(); ifolder++) {
    std::string path  = "ParticleFlow/"+(*ifolder) + "/BadEvents";
    MonitorElement* me = dqmStore_->get(path + "/" + eventid_str.str());
    if (me) {
      nSelectedEvents_++;
      if ( verbose_ ) std::cout << " Total Events " << nEvents_ 
                                << " Selected Events " << nSelectedEvents_ 
                                << " Run # : " << runNb 
                                << " Event # : " << evtNb
                                << " Luminosity Block # : " << lumiNb
                                <<  std::endl;           
      return true;
    }
  } 
  return false;
}
//
// -- End Job
//
void PFDQMEventSelector::endJob() {
  if ( verbose_ ) std::cout << " Total Events " << nEvents_ 
                            << " Selected Events " << nSelectedEvents_ 
                            << std::endl; 
}
//
// -- Open Input File
//
bool PFDQMEventSelector::openInputFile() { 
  if (inputFileName_.size() == 0) return false;
  edm::LogInfo("SiStripOfflineDQM") <<  "SiStripOfflineDQM::openInputFile: Accessing root File" << inputFileName_;
  dqmStore_->open(inputFileName_, false, "", "", DQMStore::StripRunDirs); 
  return true;
}

#include "FWCore/Framework/interface/MakerMacros.h"
DEFINE_FWK_MODULE(PFDQMEventSelector);