dNdPt analysis

[u/mrichter/AliRoot.git] / PWG0 / dNdPt / AlidNdPtTask.cxx

/**************************************************************************\r
* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *\r
*                                                                        *\r
* Author: The ALICE Off-line Project.                                    *\r
* Contributors are mentioned in the code where appropriate.              *\r
*                                                                        *\r
* Permission to use, copy, modify and distribute this software and its   *\r
* documentation strictly for non-commercial purposes is hereby granted   *\r
* without fee, provided that the above copyright notice appears in all   *\r
* copies and that both the copyright notice and this permission notice   *\r
* appear in the supporting documentation. The authors make no claims     *\r
* about the suitability of this software for any purpose. It is          *\r
* provided "as is" without express or implied warranty.                  *\r
**************************************************************************/\r
\r
#include "iostream"\r
\r
#include "TChain.h"\r
#include "TTree.h"\r
#include "TH1F.h"\r
#include "TCanvas.h"\r
#include "TList.h"\r
#include "TFile.h"\r
\r
#include "AliAnalysisTask.h"\r
#include "AliAnalysisManager.h"\r
#include "AliESDEvent.h"\r
#include "AliESDInputHandler.h"\r
#include "AliESDVertex.h"\r
#include "AliTracker.h"\r
#include "AliGeomManager.h"\r
\r
#include "AliESDtrackCuts.h"\r
#include "AliMCEventHandler.h"\r
#include "dNdPt/AlidNdPt.h"\r
#include "dNdPt/AlidNdPtEventCuts.h"\r
#include "dNdPt/AlidNdPtAcceptanceCuts.h"\r
\r
#include "dNdPt/AlidNdPtTask.h"\r
\r
using namespace std;\r
\r
ClassImp(AlidNdPtTask)\r
\r
//_____________________________________________________________________________\r
AlidNdPtTask::AlidNdPtTask(const char *name) \r
  : AliAnalysisTask(name, "dNdPt analysis")\r
  , fESD(0)\r
  , fMC(0)\r
  , fOutput(0)\r
  , fPitList(0)\r
  , fCompList(0)\r
  , fUseMCInfo(kFALSE)\r
{\r
  // Constructor\r
\r
  // Define input and output slots here\r
  DefineInput(0, TChain::Class());\r
  DefineOutput(0, TList::Class());\r
\r
  // create the list for comparison objects\r
  fCompList = new TList;\r
}\r
\r
//_____________________________________________________________________________\r
AlidNdPtTask::~AlidNdPtTask()\r
{\r
  if(fOutput) delete fOutput;  fOutput =0; \r
}\r
\r
//____________________________________________________________________________\r
Bool_t AlidNdPtTask::Notify()\r
{\r
  static Int_t count = 0;\r
  count++;\r
  Printf("Processing %d. file", count);\r
\r
return kTRUE;\r
}\r
\r
//_____________________________________________________________________________\r
void AlidNdPtTask::ConnectInputData(Option_t *) \r
{\r
// connect input data \r
// called once\r
\r
  TTree *tree = dynamic_cast<TTree*> (GetInputData(0));\r
  if (!tree) {\r
    Printf("ERROR: Could not read chain from input slot 0");\r
    return;\r
  }\r
\r
  AliESDInputHandler *esdH = dynamic_cast<AliESDInputHandler*> (AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler());\r
\r
  if (!esdH) {\r
    Printf("ERROR: Could not get ESDInputHandler");\r
    return;\r
  } else {\r
    fESD = esdH->GetEvent();\r
\r
    // Enable only the needed branches\r
    //esdH->SetActiveBranches("AliESDHeader Vertex Tracks");\r
  }\r
\r
  if (fUseMCInfo) {\r
    AliMCEventHandler* eventHandler = dynamic_cast<AliMCEventHandler*> (AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());\r
    if (!eventHandler) {\r
      Printf("ERROR: Could not retrieve MC event handler");\r
      return;\r
    } else { \r
      fMC = eventHandler->MCEvent();\r
    }\r
  }\r
}\r
\r
//_____________________________________________________________________________\r
Bool_t AlidNdPtTask::AddAnalysisObject(AlidNdPt *pObj) \r
{\r
  // add analysis object to the list\r
  if(pObj == 0) {\r
    Printf("ERROR: Could not add comparison object");\r
    return kFALSE;\r
  }\r
\r
  // add object to the list\r
  fCompList->AddLast(pObj);\r
       \r
return kTRUE;\r
}\r
\r
//_____________________________________________________________________________\r
void AlidNdPtTask::CreateOutputObjects()\r
{\r
  // Create histograms\r
  // Called once\r
\r
  OpenFile(0, "RECREATE");\r
\r
  //\r
  // create output list\r
  //\r
  fOutput = new TList;\r
  fOutput->SetOwner();\r
  fPitList = fOutput->MakeIterator();\r
\r
  // add dNdPt analysis objects to the output\r
  AlidNdPt *pObj=0;\r
  Int_t count=0;\r
  TIterator *pitCompList = fCompList->MakeIterator();\r
  pitCompList->Reset();\r
  while(( pObj = (AlidNdPt *)pitCompList->Next()) != NULL) {\r
    fOutput->Add(pObj);\r
    count++;\r
  }\r
  Printf("CreateOutputObjects(): Number of output comparison objects: %d \n", count);\r
}\r
\r
//_____________________________________________________________________________\r
void AlidNdPtTask::Exec(Option_t *) \r
{\r
  // Called for each event\r
  if (!fESD) {\r
    Printf("ERROR: ESD event not available");\r
    return;\r
  }\r
\r
  // Process analysis\r
  AlidNdPt *pObj = 0;\r
  fPitList->Reset();\r
  while((pObj = (AlidNdPt *)fPitList->Next()) != NULL) {\r
    pObj->Process(fESD,fMC);\r
  }\r
\r
  // Post output data.\r
  PostData(0, fOutput);\r
}\r
\r
//_____________________________________________________________________________\r
void AlidNdPtTask::Terminate(Option_t *) \r
{\r
  // Called one at the end \r
  \r
  // check output data\r
  fOutput = dynamic_cast<TList*> (GetOutputData(0));\r
  if (!fOutput) {\r
    Printf("ERROR: AlidNdPtTask::Terminate(): Output data not avaiable GetOutputData(0)==0x0 ..." );\r
    return;\r
  }\r
}\r