Fix plus small changes
[u/mrichter/AliRoot.git] / ANALYSIS / AliAnalysisTaskPIDResponse.cxx
1 /**************************************************************************
2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3  *                                                                        *
4  * Author: The ALICE Off-line Project.                                    *
5  * Contributors are mentioned in the code where appropriate.              *
6  *                                                                        *
7  * Permission to use, copy, modify and distribute this software and its   *
8  * documentation strictly for non-commercial purposes is hereby granted   *
9  * without fee, provided that the above copyright notice appears in all   *
10  * copies and that both the copyright notice and this permission notice   *
11  * appear in the supporting documentation. The authors make no claims     *
12  * about the suitability of this software for any purpose. It is          *
13  * provided "as is" without express or implied warranty.                  *
14  **************************************************************************/
15
16 /* $Id: AliAnalysisTaskPIDResponse.cxx 43811 2010-09-23 14:13:31Z wiechula $ */
17 #include <TFile.h>
18 #include <TChain.h>
19
20 #include <AliAnalysisManager.h>
21 #include <AliInputEventHandler.h>
22 #include <AliVEventHandler.h>
23 #include <AliVEvent.h>
24 #include <AliVParticle.h>
25 #include <AliVTrack.h>
26 #include <AliLog.h>
27 #include <AliPIDResponse.h>
28 #include <AliESDpid.h>
29 #include <AliProdInfo.h>
30
31 #include "AliAnalysisTaskPIDResponse.h"
32
33 ClassImp(AliAnalysisTaskPIDResponse)
34
35 //______________________________________________________________________________
36 AliAnalysisTaskPIDResponse::AliAnalysisTaskPIDResponse():
37 AliAnalysisTaskSE(),
38 fIsMC(kFALSE),
39 fCachePID(kTRUE),
40 fOADBPath(),
41 fSpecialDetResponse(),
42 fPIDResponse(0x0),
43 fRun(0),
44 fOldRun(0),
45 fRecoPass(0),
46 fIsTunedOnData(kFALSE),
47 fRecoPassTuned(0),
48 fUseTPCEtaCorrection(kFALSE)//TODO: In future, default kTRUE  
49 {
50   //
51   // Dummy constructor
52   //
53 }
54
55 //______________________________________________________________________________
56 AliAnalysisTaskPIDResponse::AliAnalysisTaskPIDResponse(const char* name):
57 AliAnalysisTaskSE(name),
58 fIsMC(kFALSE),
59 fCachePID(kTRUE),
60 fOADBPath(),
61 fSpecialDetResponse(),
62 fPIDResponse(0x0),
63 fRun(0),
64 fOldRun(0),
65 fRecoPass(0),
66 fIsTunedOnData(kFALSE),
67 fRecoPassTuned(0),
68 fUseTPCEtaCorrection(kFALSE)//TODO: In future, default kTRUE
69 {
70   //
71   // Default constructor
72   //
73   DefineInput(0,TChain::Class());
74 }
75
76 //______________________________________________________________________________
77 AliAnalysisTaskPIDResponse::~AliAnalysisTaskPIDResponse()
78 {
79   //
80   // Destructor
81   //
82 }
83
84 //______________________________________________________________________________
85 void AliAnalysisTaskPIDResponse::UserCreateOutputObjects()
86 {
87   //
88   // Create the output QA objects
89   //
90   
91   AliLog::SetClassDebugLevel("AliAnalysisTaskPIDResponse",10);
92   
93   //input hander
94   AliAnalysisManager *man=AliAnalysisManager::GetAnalysisManager();
95   AliInputEventHandler *inputHandler=dynamic_cast<AliInputEventHandler*>(man->GetInputEventHandler());
96   if (!inputHandler) AliFatal("Input handler needed");
97   
98   //pid response object
99   inputHandler->CreatePIDResponse(fIsMC);
100   fPIDResponse=inputHandler->GetPIDResponse();
101   if (!fPIDResponse) AliFatal("PIDResponse object was not created");
102
103   fPIDResponse->SetOADBPath(AliAnalysisManager::GetOADBPath());
104   fPIDResponse->SetCachePID(fCachePID);
105   if (!fOADBPath.IsNull()) fPIDResponse->SetOADBPath(fOADBPath.Data());
106
107   if(fIsTunedOnData) fPIDResponse->SetTunedOnData(kTRUE,fRecoPassTuned);
108
109   if (!fSpecialDetResponse.IsNull()){
110     TObjArray *arr=fSpecialDetResponse.Tokenize("; ");
111     for (Int_t i=0; i<arr->GetEntriesFast();++i){
112       TString resp(arr->At(i)->GetName());
113       if (resp.BeginsWith("TPC:")){
114         resp.ReplaceAll("TPC:","");
115         fPIDResponse->SetCustomTPCpidResponse(resp.Data());
116         AliInfo(Form("Setting custom TPC response file: '%s'",resp.Data()));
117       }
118     }
119     delete arr;
120   }
121 }
122
123 //______________________________________________________________________________
124 void AliAnalysisTaskPIDResponse::UserExec(Option_t */*option*/)
125 {
126   // Setup the PID response functions and fill the QA histograms
127   //
128   AliVEvent *event=InputEvent();
129   if (!event) return;
130   fRun=event->GetRunNumber();
131   
132   if (fRun!=fOldRun){
133     SetRecoInfo();
134     fOldRun=fRun;
135   }
136
137   fPIDResponse->SetUseTPCEtaCorrection(fUseTPCEtaCorrection);
138   fPIDResponse->InitialiseEvent(event,fRecoPass);
139   AliESDpid *pidresp = dynamic_cast<AliESDpid*>(fPIDResponse);
140   if(pidresp && AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler()){
141       pidresp->SetEventHandler(AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
142   }
143   //create and attach transient PID object
144 //   if (fCachePID) {
145 //     fPIDResponse->FillTrackDetectorPID();
146 //   }
147 }
148
149 //______________________________________________________________________________
150 void AliAnalysisTaskPIDResponse::SetRecoInfo()
151 {
152   //
153   // Set reconstruction information
154   //
155   
156   //reset information
157   fRecoPass=0;
158   
159   //Get UserInfo from the current tree 
160   AliAnalysisManager *mgr=AliAnalysisManager::GetAnalysisManager();
161   AliVEventHandler *inputHandler=mgr->GetInputEventHandler();
162   if (!inputHandler) return;
163
164   TList *uiList = inputHandler->GetUserInfo();
165   AliProdInfo prodInfo(uiList);
166   prodInfo.List();
167
168   TTree *tree= (TTree*)inputHandler->GetTree();
169   TFile *file= (TFile*)tree->GetCurrentFile();
170   if (!file) {
171     AliError("Current file not found, cannot set reconstruction information");
172     return;
173   } else {
174     TString fileName(file->GetName());
175     fPIDResponse->SetCurrentFile(fileName.Data());
176   }
177
178   if (prodInfo.IsMC() == kTRUE) fIsMC=kTRUE;         // protection if user didn't use macro switch
179   if ( (prodInfo.IsMC() == kFALSE) && (fIsMC == kFALSE) ) {      // reco pass is needed only for data
180     fRecoPass = prodInfo.GetRecoPass();
181     if (fRecoPass < 0) {   // as last resort we find pass from file name (UGLY, but not stored in ESDs/AODs before LHC12d )
182       TString fileName(file->GetName());
183       if (fileName.Contains("pass1") ) {
184         fRecoPass=1;
185       } else if (fileName.Contains("pass2") ) {
186         fRecoPass=2;
187       } else if (fileName.Contains("pass3") ) {
188         fRecoPass=3;
189       } else if (fileName.Contains("pass4") ) {
190         fRecoPass=4;
191       } else if (fileName.Contains("pass5") ) {
192         fRecoPass=5;
193       }
194     } 
195     if (fRecoPass <= 0) {
196       AliError(" ******** Failed to find reconstruction pass number *********");
197       AliError(" ******** PID information loaded for 'pass 0': parameters unreliable ******");
198       AliError("      --> If these are MC data: please set kTRUE first argument of AddTaskPIDResponse");
199       AliError("      --> If these are real data: please insert pass number inside the path of your local file ******");
200     }
201   }
202
203 }