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//--------
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// Code copied from /UserCode/Mangano/WWAnalysis/Tools/src/VertexReProducer.cc
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//--------
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#include "MitEdm/Tools/interface/VertexReProducer.h"
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#include "FWCore/Framework/interface/ESHandle.h"
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#include "TrackingTools/TransientTrack/interface/TransientTrack.h"
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#include "TrackingTools/TransientTrack/interface/TransientTrackBuilder.h"
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#include "TrackingTools/Records/interface/TransientTrackRecord.h"
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#include "FWCore/ParameterSet/interface/Registry.h"
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#include "DataFormats/Provenance/interface/Provenance.h"
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#include "FWCore/MessageLogger/interface/MessageLogger.h"
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VertexReProducer::VertexReProducer(const edm::Handle<reco::VertexCollection> &handle, const edm::Event &iEvent)
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{
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const edm::Provenance *prov = handle.provenance();
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if (prov == 0) throw cms::Exception("CorruptData") << "Vertex handle doesn't have provenance.";
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edm::ParameterSetID psid = prov->psetID();
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edm::pset::Registry *psregistry = edm::pset::Registry::instance();
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edm::ParameterSet psetFromProvenance;
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if (!psregistry->getMapped(psid, psetFromProvenance))
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throw cms::Exception("CorruptData") << "Vertex handle parameter set ID id = " << psid;
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if (prov->moduleName() != "PrimaryVertexProducer")
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throw cms::Exception("Configuration") << "Vertices to re-produce don't come from a PrimaryVertexProducer, but from a " << prov->moduleName() <<".\n";
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configure(psetFromProvenance);
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// Now we also dig out the ProcessName used for the reco::Tracks and reco::Vertices
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std::vector<edm::BranchID> parents = prov->parents();
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bool foundTracks = false;
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bool foundBeamSpot = false;
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for (std::vector<edm::BranchID>::const_iterator it = parents.begin(), ed = parents.end(); it != ed; ++it) {
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edm::Provenance parprov = iEvent.getProvenance(*it);
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if (parprov.friendlyClassName() == "recoTracks") {
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tracksTag_ = edm::InputTag(parprov.moduleLabel(), parprov.productInstanceName(), parprov.processName());
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foundTracks = true;
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} else if (parprov.friendlyClassName() == "recoBeamSpot") {
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beamSpotTag_ = edm::InputTag(parprov.moduleLabel(), parprov.productInstanceName(), parprov.processName());
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foundBeamSpot = true;
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}
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}
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if (!foundTracks || !foundBeamSpot) {
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edm::LogWarning("VertexReProducer_MissingParentage") <<
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"Can't find parentage info for vertex collection inputs: " <<
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(foundTracks ? "" : "tracks ") << (foundBeamSpot ? "" : "beamSpot") << "\n";
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}
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}
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void
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VertexReProducer::configure(const edm::ParameterSet &iConfig)
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{
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config_ = iConfig;
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tracksTag_ = iConfig.getParameter<edm::InputTag>("TrackLabel");
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beamSpotTag_ = iConfig.getParameter<edm::InputTag>("beamSpotLabel");
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algo_.reset(new PrimaryVertexProducerAlgorithm(iConfig));
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}
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std::vector<TransientVertex>
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VertexReProducer::makeVertices(const reco::TrackCollection &tracks,
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const reco::BeamSpot &bs,
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const edm::EventSetup &iSetup) const
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{
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edm::ESHandle<TransientTrackBuilder> theB;
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iSetup.get<TransientTrackRecord>().get("TransientTrackBuilder",theB);
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std::vector<reco::TransientTrack> t_tks; t_tks.reserve(tracks.size());
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for (reco::TrackCollection::const_iterator it = tracks.begin(), ed = tracks.end(); it != ed; ++it) {
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t_tks.push_back((*theB).build(*it));
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t_tks.back().setBeamSpot(bs);
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}
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return algo_->vertices(t_tks, bs);
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}
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