Protection against re-initialization of histograms if not already

[u/mrichter/AliRoot.git] / PWGJE / EMCALJetTasks / macros / AddTaskSAJF.C

// $Id$

AliAnalysisTaskSAJF* AddTaskSAJF(
  const char *ntracks            = "Tracks",
  const char *nclusters          = "CaloClusters",
  const char *njets              = "Jets",
  const char *nrho               = "Rho",
  Double_t    jetradius          = 0.2,
  Double_t    jetptcut           = 1,
  Double_t    jetareacut         = 0.557,
  const char *cutType            = "TPC",
  Int_t       leadhadtype        = 0,
  const char *taskname           = "AliAnalysisTaskSAJF"
)
{  
  // Get the pointer to the existing analysis manager via the static access method.
  //==============================================================================
  AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
  if (!mgr)
  {
    ::Error("AddTaskSAJF", "No analysis manager to connect to.");
    return NULL;
  }  
  
  // Check the analysis type using the event handlers connected to the analysis manager.
  //==============================================================================
  if (!mgr->GetInputEventHandler())
  {
    ::Error("AddTaskSAJF", "This task requires an input event handler");
    return NULL;
  }
  
  //-------------------------------------------------------
  // Init the task and do settings
  //-------------------------------------------------------

  TString name(taskname);
  if (strcmp(njets,"")) {
    name += "_";
    name += njets;
  }
  if (strcmp(nrho,"")) {
    name += "_";
    name += nrho;
  }
  name += "_";
  name += cutType;

  AliAnalysisTaskSAJF* jetTask = new AliAnalysisTaskSAJF(name);

  AliParticleContainer *trackCont = jetTask->AddParticleContainer(ntracks);
  AliClusterContainer *clusterCont = jetTask->AddClusterContainer(nclusters);

  AliJetContainer *jetCont = jetTask->AddJetContainer(njets,cutType,jetradius);
  if (jetCont) {
    jetCont->SetRhoName(nrho);
    jetCont->SetPercAreaCut(jetareacut);
    jetCont->SetJetPtCut(jetptcut);
    jetCont->ConnectParticleContainer(trackCont);
    jetCont->ConnectClusterContainer(clusterCont);
    jetCont->SetLeadingHadronType(leadhadtype);
  }

  //-------------------------------------------------------
  // Final settings, pass to manager and set the containers
  //-------------------------------------------------------
  
  mgr->AddTask(jetTask);
  
  // Create containers for input/output
  AliAnalysisDataContainer *cinput1  = mgr->GetCommonInputContainer()  ;
  TString contname(name);
  contname += "_histos";
  AliAnalysisDataContainer *coutput1 = mgr->CreateContainer(contname.Data(), 
							    TList::Class(),AliAnalysisManager::kOutputContainer,
							    Form("%s", AliAnalysisManager::GetCommonFileName()));
  mgr->ConnectInput  (jetTask, 0,  cinput1 );
  mgr->ConnectOutput (jetTask, 1, coutput1 );
  
  return jetTask;
}