AliAnalysisTaskDmesonJetsDetectorResponse.cxx

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* Author: The ALICE Off-line Project.                                    *
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#include "AliAnalysisTaskDmesonJetsDetectorResponse.h"

// Definitions of class AliAnalysisTaskDmesonJetsDetectorResponse::AliDmesonMatchInfoSummary

ClassImp(AliAnalysisTaskDmesonJetsDetectorResponse::AliDmesonMatchInfoSummary);

// Definitions of class AliAnalysisTaskDmesonJetsDetectorResponse::AliD0MatchInfoSummary

ClassImp(AliAnalysisTaskDmesonJetsDetectorResponse::AliD0MatchInfoSummary);

void AliAnalysisTaskDmesonJetsDetectorResponse::AliD0MatchInfoSummary::Reset()
{
  fGenerated.Reset();
  fReconstructed.Reset();
}

void AliAnalysisTaskDmesonJetsDetectorResponse::AliD0MatchInfoSummary::SetReconstructed(const AliDmesonJetInfo& reco)
{
  fReconstructed.Set(reco);
}

void AliAnalysisTaskDmesonJetsDetectorResponse::AliD0MatchInfoSummary::SetGenerated(const AliDmesonJetInfo& truth)
{
  fGenerated.Set(truth);
}

// Definitions of class AliAnalysisTaskDmesonJetsDetectorResponse::AliDStarMatchInfoSummary

ClassImp(AliAnalysisTaskDmesonJetsDetectorResponse::AliDStarMatchInfoSummary);

void AliAnalysisTaskDmesonJetsDetectorResponse::AliDStarMatchInfoSummary::Reset()
{
  fGenerated.Reset();
  fReconstructed.Reset();
}

void AliAnalysisTaskDmesonJetsDetectorResponse::AliDStarMatchInfoSummary::SetReconstructed(const AliDmesonJetInfo& reco)
{
  fReconstructed.Set(reco);
}

void AliAnalysisTaskDmesonJetsDetectorResponse::AliDStarMatchInfoSummary::SetGenerated(const AliDmesonJetInfo& truth)
{
  fGenerated.Set(truth);
}

// Definitions of class AliAnalysisTaskDmesonJetsDetectorResponse::ResponseEngine

ClassImp(AliAnalysisTaskDmesonJetsDetectorResponse::ResponseEngine);

AliAnalysisTaskDmesonJetsDetectorResponse::ResponseEngine::ResponseEngine() :
  TObject(),
  fCandidateType(kD0toKpi),
  fInhibit(kFALSE),
  fMaxJetDmesonDistance(0),
  fName(),
  fTree(0),
  fCurrentDmeson(0),
  fCurrentJetInfoReco(0),
  fCurrentJetInfoTruth(0),
  fDataSlotNumber(-1),
  fRecontructed(0),
  fGenerated(0)
{

}

AliAnalysisTaskDmesonJetsDetectorResponse::ResponseEngine::ResponseEngine(ECandidateType_t type) :
  TObject(),
  fCandidateType(type),
  fInhibit(kFALSE),
  fMaxJetDmesonDistance(1),
  fName(),
  fTree(0),
  fCurrentDmeson(0),
  fCurrentJetInfoReco(0),
  fCurrentJetInfoTruth(0),
  fDataSlotNumber(-1),
  fRecontructed(0),
  fGenerated(0)
{

}

AliAnalysisTaskDmesonJetsDetectorResponse::ResponseEngine::ResponseEngine(const AliAnalysisTaskDmesonJetsDetectorResponse::ResponseEngine &source) :
  TObject(source),
  fCandidateType(source.fCandidateType),
  fInhibit(source.fInhibit),
  fMaxJetDmesonDistance(1),
  fName(source.fName),
  fTree(0),
  fCurrentDmeson(0),
  fCurrentJetInfoReco(0),
  fCurrentJetInfoTruth(0),
  fDataSlotNumber(source.fDataSlotNumber),
  fRecontructed(source.fRecontructed),
  fGenerated(source.fGenerated)
{
}

AliAnalysisTaskDmesonJetsDetectorResponse::ResponseEngine& AliAnalysisTaskDmesonJetsDetectorResponse::ResponseEngine::operator=(const ResponseEngine& source)
{
  new (this) ResponseEngine(source);
  return *this;
}

Bool_t AliAnalysisTaskDmesonJetsDetectorResponse::ResponseEngine::CheckInit()
{
  fInhibit = (fRecontructed == 0 || fGenerated == 0);
  fName = fRecontructed->GetCandidateName();
  return !fInhibit;
}

void AliAnalysisTaskDmesonJetsDetectorResponse::ResponseEngine::RunAnalysis()
{

}

TTree* AliAnalysisTaskDmesonJetsDetectorResponse::ResponseEngine::BuildTree(const char* taskName)
{
  TString classname;
  switch (fCandidateType) {
  case kD0toKpi:
  case kD0toKpiLikeSign:
    classname = "AliAnalysisTaskDmesonJetsDetectorResponse::AliD0MatchInfoSummary";
    fCurrentDmeson = new AliD0MatchInfoSummary();
    break;
  case kDstartoKpipi:
    classname = "AliAnalysisTaskDmesonJetsDetectorResponse::AliDStarMatchInfoSummary";
    fCurrentDmeson = new AliDStarMatchInfoSummary();
    break;
  }
  TString treeName = TString::Format("%s_%s", taskName, GetName());
  fTree = new TTree(treeName, treeName);
  fTree->Branch("DmesonJet", classname, &fCurrentDmeson);

  fCurrentJetInfoTruth = new AliJetInfoSummary*[fGenerated->GetJetDefinitions().size()];
  for (Int_t i = 0; i < fGenerated->GetJetDefinitions().size(); i++) {
    fCurrentJetInfoTruth[i] = new AliJetInfoSummary();
    TString bname = TString::Format("%s_truth", fGenerated->GetJetDefinitions()[i].GetName());
    fTree->Branch(bname, "AliAnalysisTaskDmesonJets::AliJetInfoSummary", &fCurrentJetInfoTruth[i]);
  }

  fCurrentJetInfoReco = new AliJetInfoSummary*[fRecontructed->GetJetDefinitions().size()];
  for (Int_t i = 0; i < fRecontructed->GetJetDefinitions().size(); i++) {
    fCurrentJetInfoReco[i] = new AliJetInfoSummary();
    TString bname = TString::Format("%s_reco", fRecontructed->GetJetDefinitions()[i].GetName());
    fTree->Branch(bname, "AliAnalysisTaskDmesonJets::AliJetInfoSummary", &fCurrentJetInfoReco[i]);
  }

  return fTree;
}

Bool_t AliAnalysisTaskDmesonJetsDetectorResponse::ResponseEngine::FillTree(Bool_t applyKinCuts, Bool_t findNoDMesonRecoJets)
{
  fRecontructed->FillQA(applyKinCuts);
  fGenerated->FillQA(applyKinCuts);

  std::map<int, AliDmesonJetInfo>& recoDmesons = fRecontructed->GetDmesons();
  std::map<int, AliDmesonJetInfo>& truthDmesons = fGenerated->GetDmesons();

  // Loop over reconstructed D meson and look for their generated counterparts
  for (auto& dmeson_reco : recoDmesons) {
    // Reset D meson and jet tree branches
    fCurrentDmeson->Reset();
    for (UInt_t ij = 0; ij < fRecontructed->GetJetDefinitions().size(); ij++) {
      fCurrentJetInfoReco[ij]->Reset();
    }
    for (UInt_t ij = 0; ij < fGenerated->GetJetDefinitions().size(); ij++) {
      fCurrentJetInfoTruth[ij]->Reset();
    }

    // Copy the reconstructed D meson information in the tree branch
    fCurrentDmeson->SetReconstructed(dmeson_reco.second);

    Int_t accRecJets = 0;
    Int_t accGenJets = 0;

    // Copy the reconstructed jet information in the tree branch
    for (UInt_t ij = 0; ij < fRecontructed->GetJetDefinitions().size(); ij++) {
      AliJetInfo* jet = dmeson_reco.second.GetJet(fRecontructed->GetJetDefinitions()[ij].GetName());
      if (!jet) continue;
      if (applyKinCuts && !fRecontructed->GetJetDefinitions()[ij].IsJetInAcceptance(*jet)) continue;
      fCurrentJetInfoReco[ij]->Set(dmeson_reco.second, fRecontructed->GetJetDefinitions()[ij].GetName());
      accRecJets++;
    }

    // Look for the generated D meson counterpart
    if (dmeson_reco.second.fMCLabel >= 0) {
      std::map<int, AliDmesonJetInfo>::iterator it = truthDmesons.find(dmeson_reco.second.fMCLabel);
      if (it != truthDmesons.end()) {
        std::pair<const int, AliDmesonJetInfo>& dmeson_truth = (*it);
        // Flag the generated D meson as reconstructed
        dmeson_truth.second.fReconstructed = kTRUE;
        // Copy the generated D meson information in the tree branch
        fCurrentDmeson->SetGenerated((*it).second);

        // Copy the reconstructed jet information in the tree branch
        for (UInt_t ij = 0; ij < fGenerated->GetJetDefinitions().size(); ij++) {
          AliJetInfo* jet = dmeson_truth.second.GetJet(fGenerated->GetJetDefinitions()[ij].GetName());
          if (!jet) continue;
          if (!applyKinCuts || fGenerated->GetJetDefinitions()[ij].IsJetInAcceptance(*jet)) accGenJets++;
          fCurrentJetInfoTruth[ij]->Set(dmeson_truth.second, fGenerated->GetJetDefinitions()[ij].GetName());
        }
      }
    }

    // Fill the tree with the current D meson
    if (accRecJets > 0 || accGenJets > 0) fTree->Fill();
  }

  // Reset jet tree branches
  for (UInt_t ij = 0; ij < fRecontructed->GetJetDefinitions().size(); ij++) fCurrentJetInfoReco[ij]->Reset();
  for (UInt_t ij = 0; ij < fGenerated->GetJetDefinitions().size(); ij++) fCurrentJetInfoTruth[ij]->Reset();

  // Loop over generated D meson that were not reconstructed
  for (auto& dmeson_truth : truthDmesons) {
    // Reset D meson tree branch
    fCurrentDmeson->Reset();
    // Skip if the generated D meson was reconstructed
    if (dmeson_truth.second.fReconstructed) continue;
    // Copy the generated D meson information in the tree branch
    fCurrentDmeson->SetGenerated(dmeson_truth.second);

    Int_t accRecJets = 0;
    Int_t accGenJets = 0;

    // Copy the reconstructed jet information in the tree branch
    for (UInt_t ij = 0; ij < fGenerated->GetJetDefinitions().size(); ij++) {
      fCurrentJetInfoTruth[ij]->Reset();
      AliJetInfo* jet = dmeson_truth.second.GetJet(fGenerated->GetJetDefinitions()[ij].GetName());
      if (!jet) continue;
      if (applyKinCuts && !fGenerated->GetJetDefinitions()[ij].IsJetInAcceptance(*jet)) continue;
      fCurrentJetInfoTruth[ij]->Set(dmeson_truth.second, fGenerated->GetJetDefinitions()[ij].GetName());
      accGenJets++;
    }

    // Check if a matched reconstructed jet can be found and copy the reconstructed jet information in the tree branch
    if (findNoDMesonRecoJets) {
      for (UInt_t ij = 0; ij < fRecontructed->GetJetDefinitions().size(); ij++) {
        // Reset reconstructed jet tree branch
        fCurrentJetInfoReco[ij]->Reset();
        // Look for a matched reconstructed jet
        AliAnalysisTaskDmesonJets::AnalysisEngine::jet_distance_pair jet = fRecontructed->FindJetMacthedToGeneratedDMeson(dmeson_truth.second, fRecontructed->GetJetDefinitions()[ij], fRecontructed->GetJetDefinitions()[ij].GetRadius() * fMaxJetDmesonDistance, applyKinCuts);
        if (!jet.first) continue;
        // Copy reconstructed jet information in the tree branch
        fCurrentJetInfoReco[ij]->Set(*(jet.first));
        fCurrentJetInfoReco[ij]->fR = jet.second;
        accRecJets++;
      }
    }

    // Fill the tree with the current D meson
    if (accRecJets > 0 || accGenJets > 0) fTree->Fill();
  }

  return kTRUE;
}

// Definitions of class AliAnalysisTaskDmesonJetsDetectorResponse

ClassImp(AliAnalysisTaskDmesonJetsDetectorResponse);

AliAnalysisTaskDmesonJetsDetectorResponse::AliAnalysisTaskDmesonJetsDetectorResponse() :
  AliAnalysisTaskDmesonJets(),
  fFindRecoJetsForLostDMesons(kFALSE),
  fResponseEngines()
{
  fOutputType = kNoOutput;
}

AliAnalysisTaskDmesonJetsDetectorResponse::AliAnalysisTaskDmesonJetsDetectorResponse(const char* name, Int_t nOutputTrees) :
  AliAnalysisTaskDmesonJets(name, nOutputTrees),
  fFindRecoJetsForLostDMesons(kFALSE),
  fResponseEngines()
{
  fOutputType = kNoOutput;
}

void AliAnalysisTaskDmesonJetsDetectorResponse::UserCreateOutputObjects()
{
  ::Info("UserCreateOutputObjects", "CreateOutputObjects of task %s", GetName());

  AliAnalysisTaskDmesonJets::UserCreateOutputObjects();

  for (auto &param : fAnalysisEngines) {
    if (param.IsInhibit()) continue;
    if (param.GetMCMode() != kSignalOnly && param.GetMCMode() != kMCTruth) continue;

    std::map<ECandidateType_t, ResponseEngine>::iterator it = fResponseEngines.find(param.GetCandidateType());

    if (it == fResponseEngines.end()) {
      it = (fResponseEngines.insert(std::pair<const ECandidateType_t, ResponseEngine>(param.GetCandidateType(), ResponseEngine(param.GetCandidateType())))).first;
    }

    if (param.GetMCMode() == kMCTruth) {
      (*it).second.SetGeneratedAnalysisEngine(&param);
    }
    else {
      (*it).second.SetReconstructedAnalysisEngine(&param);
    }
  }

  Int_t treeSlot = 0;

  for (auto &resp : fResponseEngines) {
    if (!resp.second.CheckInit()) continue;

    resp.second.BuildTree(GetName());
    if (treeSlot < fNOutputTrees) {
      resp.second.AssignDataSlot(treeSlot+2);
      treeSlot++;
      PostDataFromResponseEngine(resp.second);
    }
    else {
      AliError(Form("Number of data output slots %d not sufficient. Tree of response engine %s will not be posted!", fNOutputTrees, resp.second.GetName()));
    }
  }
}

void AliAnalysisTaskDmesonJetsDetectorResponse::ExecOnce()
{
  AliAnalysisTaskDmesonJets::ExecOnce();
}

Bool_t AliAnalysisTaskDmesonJetsDetectorResponse::Run()
{
  return AliAnalysisTaskDmesonJets::Run();
}

Bool_t AliAnalysisTaskDmesonJetsDetectorResponse::FillHistograms()
{
  for (auto &resp : fResponseEngines) {

    if (resp.second.IsInhibit()) continue;

    resp.second.FillTree(fApplyKinematicCuts, fFindRecoJetsForLostDMesons);

    PostDataFromResponseEngine(resp.second);
  }

  return kTRUE;

}

void AliAnalysisTaskDmesonJetsDetectorResponse::SetOutputTypeInternal(EOutputType_t b)
{
  if (fOutputType != kNoOutput && fOutputType != kTreeOutput) {
    AliWarning("This class only provides a tree output.");
  }

  // Always set it to kNoOutput: base class does not generate any output (other than QA histograms), all the output comes from the derived class
  fOutputType = kNoOutput;
}

Int_t AliAnalysisTaskDmesonJetsDetectorResponse::PostDataFromResponseEngine(const ResponseEngine& eng)
{
  if (eng.GetDataSlotNumber() >= 0 && eng.GetTree()) {
    PostData(eng.GetDataSlotNumber(), eng.GetTree());
    return eng.GetDataSlotNumber();
  }
  else {
    return -1;
  }
}