WeightManager Class Reference

#include <WeightManager.h>

Public Member Functions
double	weight (const edm::Event &)
	WeightManager (const edm::ParameterSet &, edm::ConsumesCollector iC)
	~WeightManager ()

Private Attributes
std::vector< edm::InputTag >	_genEventInfos
edm::InputTag	_hepmcCollection
bool	_useHepMC
std::vector< edm::EDGetTokenT< std::vector< edm::InputTag > > >	genEventInfosTokens_
edm::EDGetTokenT< edm::HepMCProduct >	hepmcCollectionToken_

Detailed Description

Definition at line 20 of file WeightManager.h.

Constructor & Destructor Documentation

WeightManager()

WeightManager::WeightManager	(	const edm::ParameterSet &	iConfig,
		edm::ConsumesCollector	iC
	)

Definition at line 12 of file WeightManager.cc.

    : _useHepMC(iConfig.getParameter<bool>("UseWeightFromHepMC")) {
  if (_useHepMC) {
    _hepmcCollection = iConfig.getParameter<InputTag>("hepmcCollection");
    hepmcCollectionToken_ = iC.consumes<HepMCProduct>(_hepmcCollection);
  } else {
    _genEventInfos = iConfig.getParameter<std::vector<InputTag> >("genEventInfos");
    for (unsigned int i = 0; i < _genEventInfos.size(); i++)
      genEventInfosTokens_.push_back(iC.consumes<std::vector<InputTag> >(_genEventInfos[i]));
  }
}

References _genEventInfos, _hepmcCollection, _useHepMC, edm::ConsumesCollector::consumes(), genEventInfosTokens_, edm::ParameterSet::getParameter(), hepmcCollectionToken_, and mps_fire::i.

~WeightManager()

WeightManager::~WeightManager ( )

inline

Definition at line 23 of file WeightManager.h.

{};

Member Function Documentation

weight()

double WeightManager::weight

(

const edm::Event &

iEvent

)

Definition at line 24 of file WeightManager.cc.

                                                {
  if (_useHepMC) {
    edm::Handle<HepMCProduct> evt;
    iEvent.getByToken(hepmcCollectionToken_, evt);
    const HepMC::GenEvent* myGenEvent = evt->GetEvent();
 
    double weight = 1.;
    if (!myGenEvent->weights().empty())
      weight = myGenEvent->weights()[0];
    return weight;
  } else {
    double weight = 1.;
    for (unsigned int i = 0; i < genEventInfosTokens_.size(); ++i) {
      edm::Handle<GenEventInfoProduct> info;
      iEvent.getByToken(genEventInfosTokens_[i], info);
      weight *= info->weight();
    }
    return weight;
  }
}

References _useHepMC, genEventInfosTokens_, edm::HepMCProduct::GetEvent(), hepmcCollectionToken_, mps_fire::i, iEvent, and info().

Referenced by WValidation::analyze(), BasicHepMCHeavyIonValidation::analyze(), DrellYanValidation::analyze(), BasicGenParticleValidation::analyze(), BasicHepMCValidation::analyze(), MBUEandQCDValidation::analyze(), HiggsValidation::analyze(), and DuplicationChecker::analyze().

Member Data Documentation

_genEventInfos

std::vector<edm::InputTag> WeightManager::_genEventInfos

private

Definition at line 29 of file WeightManager.h.

Referenced by WeightManager().

_hepmcCollection

edm::InputTag WeightManager::_hepmcCollection

private

Definition at line 30 of file WeightManager.h.

Referenced by WeightManager().

_useHepMC

bool WeightManager::_useHepMC

private

Definition at line 28 of file WeightManager.h.

Referenced by weight(), and WeightManager().

genEventInfosTokens_

std::vector<edm::EDGetTokenT<std::vector<edm::InputTag> > > WeightManager::genEventInfosTokens_

private

Definition at line 33 of file WeightManager.h.

Referenced by weight(), and WeightManager().

hepmcCollectionToken_

edm::EDGetTokenT<edm::HepMCProduct> WeightManager::hepmcCollectionToken_

private

Definition at line 32 of file WeightManager.h.

Referenced by weight(), and WeightManager().