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// $Id: FillerConversions.cc,v 1.21 2010/10/22 00:05:38 bendavid Exp $
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#include "MitProd/TreeFiller/interface/FillerConversions.h"
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#include "DataFormats/Common/interface/RefToPtr.h"
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#include "MitEdm/DataFormats/interface/RefToBaseToPtr.h"
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#include "MitAna/DataTree/interface/ConversionCol.h"
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#include "MitAna/DataTree/interface/Names.h"
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#include "MitProd/ObjectService/interface/ObjectService.h"
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using namespace std;
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using namespace edm;
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using namespace mithep;
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//--------------------------------------------------------------------------------------------------
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FillerConversions::FillerConversions(const ParameterSet &cfg, const char *name, bool active) :
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BaseFiller(cfg,name,active),
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edmName_(Conf().getUntrackedParameter<string>("edmName","conversions")),
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mitName_(Conf().getUntrackedParameter<string>("mitName","Conversions")),
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stablePartMapNames_(Conf().exists("stablePartMaps") ?
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Conf().getUntrackedParameter<vector<string> >("stablePartMaps") :
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vector<string>()),
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conversionMapName_(Conf().getUntrackedParameter<string>("conversionMapName",
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Form("%sMapName",mitName_.c_str()))),
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conversions_(new mithep::ConversionArr(16)),
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conversionMap_(new mithep::ConversionMap)
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{
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// Constructor.
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}
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//--------------------------------------------------------------------------------------------------
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FillerConversions::~FillerConversions()
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{
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// Destructor.
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delete conversions_;
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delete conversionMap_;
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}
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//--------------------------------------------------------------------------------------------------
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void FillerConversions::BookDataBlock(TreeWriter &tws)
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{
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// Add conversions to tree. Publish and get our objects.
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tws.AddBranch(mitName_,&conversions_);
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OS()->add<mithep::ConversionArr>(conversions_,mitName_);
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if (!convElectronMapName_.empty()) {
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conversionMap_->SetBrName(mitName_);
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OS()->add(conversionMap_,conversionMapName_);
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}
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for (std::vector<std::string>::const_iterator bmapName = stablePartMapNames_.begin();
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bmapName!=stablePartMapNames_.end(); ++bmapName) {
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if (!bmapName->empty()) {
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const TrackPartMap *map = OS()->get<TrackPartMap>(*bmapName);
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if (map) {
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stablePartMaps_.push_back(map);
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AddBranchDep(mitName_,map->GetBrName());
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}
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}
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}
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}
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//--------------------------------------------------------------------------------------------------
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void FillerConversions::FillDataBlock(const edm::Event &event,
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const edm::EventSetup &setup)
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{
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// Fill conversions data structure and maps.
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conversions_->Delete();
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conversionMap_->Reset();
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Handle<reco::ConversionCollection> hConversionProduct;
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GetProduct(edmName_, hConversionProduct, event);
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conversionMap_->SetEdmProductId(hConversionProduct.id().id());
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const reco::ConversionCollection inConversions = *(hConversionProduct.product());
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for (reco::ConversionCollection::const_iterator inConversion = inConversions.begin();
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inConversion != inConversions.end(); ++inConversion) {
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mithep::Vertex vertex(inConversion->conversionVertex().x(),
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inConversion->conversionVertex().y(),
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inConversion->conversionVertex().z(),
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inConversion->conversionVertex().xError(),
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inConversion->conversionVertex().yError(),
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inConversion->conversionVertex().zError());
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vertex.SetChi2(inConversion->conversionVertex().chi2());
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vertex.SetNdof(inConversion->conversionVertex().ndof());
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vertex.SetNTracksFit(inConversion->conversionVertex().tracksSize());
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mithep::Conversion *outConversion = conversions_->Allocate();
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new (outConversion) mithep::Conversion(vertex);
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outConversion->SetDCotTheta(inConversion->pairCotThetaSeparation());
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outConversion->SetEOverP(inConversion->EoverP());
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outConversion->SetPairMass(inConversion->pairInvariantMass());
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outConversion->SetPairMomentum(inConversion->pairMomentum().x(),
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inConversion->pairMomentum().y(),
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inConversion->pairMomentum().z());
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if (stablePartMaps_.size()) {
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std::vector<reco::TrackBaseRef> trackRefs = inConversion->tracks();
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for (std::vector<reco::TrackBaseRef>::const_iterator trackRef = trackRefs.begin();
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trackRef != trackRefs.end(); ++trackRef) {
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outConversion->AddDaughter(GetMitParticle(mitedm::refToBaseToPtr(*trackRef)));
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}
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}
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reco::ConversionRef theRef(hConversionProduct, inConversion-inConversions.begin());
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conversionMap_->Add(theRef, outConversion);
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}
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conversions_->Trim();
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}
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//--------------------------------------------------------------------------------------------------
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mithep::Particle *FillerConversions::GetMitParticle(edm::Ptr<reco::Track> ptr) const
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{
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// Return our particle referenced by the edm pointer.
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mithep::Particle *mitPart = 0;
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for (std::vector<const mithep::TrackPartMap*>::const_iterator bmap = stablePartMaps_.begin();
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bmap!=stablePartMaps_.end(); ++bmap) {
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const mithep::TrackPartMap *theMap = *bmap;
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if (theMap->HasMit(ptr)) {
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mitPart = theMap->GetMit(ptr);
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return mitPart;
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}
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}
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if (!mitPart)
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throw edm::Exception(edm::errors::Configuration, "FillerConversions::FillDataBlock()\n")
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<< "Error! MITHEP Object "
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<< "not found in AssociationMaps (" << typeid(*this).name() << ")." << std::endl;
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return mitPart;
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}
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