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b2a297fa | 1 | /************************************************************************* |
2 | * Copyright(c) 1998-2009, 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 | /////////////////////////////////////////////////////////////////////////// | |
17 | // // | |
18 | // Basic Analysis Task // | |
19 | // // | |
20 | /////////////////////////////////////////////////////////////////////////// | |
21 | ||
22 | #include <TChain.h> | |
61d106d3 | 23 | #include <TH1D.h> |
b2a297fa | 24 | |
25 | #include <AliLog.h> | |
26 | #include <AliAODHandler.h> | |
27 | #include <AliAnalysisManager.h> | |
28 | #include <AliVEvent.h> | |
8df8e382 | 29 | #include <AliInputEventHandler.h> |
30 | #include <AliESDInputHandler.h> | |
2a14a7b1 | 31 | #include <AliAODInputHandler.h> |
b2a297fa | 32 | |
33 | #include "AliDielectron.h" | |
8df8e382 | 34 | #include "AliDielectronMC.h" |
b2a297fa | 35 | #include "AliDielectronHistos.h" |
8df8e382 | 36 | #include "AliDielectronVarManager.h" |
b2a297fa | 37 | #include "AliAnalysisTaskDielectronFilter.h" |
38 | ||
39 | ClassImp(AliAnalysisTaskDielectronFilter) | |
40 | ||
41 | //_________________________________________________________________________________ | |
42 | AliAnalysisTaskDielectronFilter::AliAnalysisTaskDielectronFilter() : | |
2a14a7b1 | 43 | AliAnalysisTaskSE(), |
44 | fDielectron(0), | |
45 | fSelectPhysics(kTRUE), | |
46 | fTriggerMask(AliVEvent::kMB), | |
47 | fEventStat(0x0) | |
b2a297fa | 48 | { |
49 | // | |
50 | // Constructor | |
51 | // | |
52 | } | |
53 | ||
54 | //_________________________________________________________________________________ | |
55 | AliAnalysisTaskDielectronFilter::AliAnalysisTaskDielectronFilter(const char *name) : | |
2a14a7b1 | 56 | AliAnalysisTaskSE(name), |
57 | fDielectron(0), | |
58 | fSelectPhysics(kTRUE), | |
59 | fTriggerMask(AliVEvent::kMB), | |
60 | fEventStat(0x0) | |
b2a297fa | 61 | { |
62 | // | |
63 | // Constructor | |
64 | // | |
65 | DefineInput(0,TChain::Class()); | |
66 | DefineOutput(1, THashList::Class()); | |
61d106d3 | 67 | DefineOutput(2, TH1D::Class()); |
b2a297fa | 68 | } |
69 | ||
70 | //_________________________________________________________________________________ | |
71 | void AliAnalysisTaskDielectronFilter::Init() | |
72 | { | |
73 | // Initialization | |
74 | if (fDebug > 1) AliInfo("Init() \n"); | |
75 | ||
76 | // require AOD handler | |
77 | AliAODHandler *aodH = (AliAODHandler*)((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler()); | |
78 | if (!aodH) Fatal("Init", "No AOD handler. Halting."); | |
79 | ||
80 | //require dielectron framework | |
81 | if (!fDielectron) { | |
82 | Error("Init","Dielectron framework class required. Please create and instance with proper cuts and set it via 'SetDielectron' before executing this task!!!"); | |
83 | return; | |
84 | } | |
8df8e382 | 85 | fDielectron->Init(); |
b2a297fa | 86 | |
87 | aodH->AddFilteredAOD("AliAOD.Dielectron.root", "DielectronEvents"); | |
88 | // AddAODBranch("AliDielectronCandidates",fDielectron->GetPairArraysPointer(),"deltaAOD.Dielectron.root"); | |
89 | } | |
90 | ||
61d106d3 | 91 | //_________________________________________________________________________________ |
92 | void AliAnalysisTaskDielectronFilter::UserCreateOutputObjects() | |
93 | { | |
94 | // | |
95 | // Initilise histograms | |
96 | // | |
97 | if (!fEventStat){ | |
98 | fEventStat=new TH1D("hEventStat","Event statistics",5,0,5); | |
99 | fEventStat->GetXaxis()->SetBinLabel(1,"Before Phys. Sel."); | |
100 | fEventStat->GetXaxis()->SetBinLabel(2,"After Phys. Sel."); | |
101 | fEventStat->GetXaxis()->SetBinLabel(3,"After Cand. Sel."); | |
102 | } | |
2a14a7b1 | 103 | |
61d106d3 | 104 | PostData(2,fEventStat); |
105 | } | |
106 | ||
b2a297fa | 107 | //_________________________________________________________________________________ |
108 | void AliAnalysisTaskDielectronFilter::UserExec(Option_t *) | |
109 | { | |
110 | // | |
111 | // Main loop. Called for every event | |
112 | // | |
8df8e382 | 113 | |
b2a297fa | 114 | if (!fDielectron) return; |
115 | ||
8df8e382 | 116 | AliAnalysisManager *man=AliAnalysisManager::GetAnalysisManager(); |
117 | AliESDInputHandler *esdHandler=0x0; | |
118 | if ( (esdHandler=dynamic_cast<AliESDInputHandler*>(man->GetInputEventHandler())) && esdHandler->GetESDpid() ){ | |
119 | AliDielectronVarManager::SetESDpid(esdHandler->GetESDpid()); | |
120 | } else { | |
121 | //load esd pid bethe bloch parameters depending on the existance of the MC handler | |
122 | // yes: MC parameters | |
123 | // no: data parameters | |
2a14a7b1 | 124 | |
125 | //ESD case | |
126 | if (man->GetInputEventHandler()->IsA()==AliESDInputHandler::Class()){ | |
127 | if (!AliDielectronVarManager::GetESDpid()){ | |
128 | ||
129 | if (AliDielectronMC::Instance()->HasMC()) { | |
130 | AliDielectronVarManager::InitESDpid(); | |
131 | } else { | |
132 | AliDielectronVarManager::InitESDpid(1); | |
133 | } | |
134 | } | |
135 | } | |
136 | //AOD case | |
137 | if (man->GetInputEventHandler()->IsA()==AliESDInputHandler::Class()){ | |
138 | if (!AliDielectronVarManager::GetAODpidUtil()){ | |
139 | if (AliDielectronMC::Instance()->HasMC()) { | |
140 | AliDielectronVarManager::InitAODpidUtil(); | |
141 | } else { | |
142 | AliDielectronVarManager::InitAODpidUtil(1); | |
143 | } | |
8df8e382 | 144 | } |
145 | } | |
146 | } | |
2a14a7b1 | 147 | |
8df8e382 | 148 | // Was event selected ? |
149 | AliInputEventHandler* inputHandler = (AliInputEventHandler*) (man->GetInputEventHandler()); | |
61d106d3 | 150 | UInt_t isSelected = AliVEvent::kAny; |
8df8e382 | 151 | if( fSelectPhysics && inputHandler && inputHandler->GetEventSelection() ) { |
152 | isSelected = inputHandler->IsEventSelected(); | |
61d106d3 | 153 | isSelected&=fTriggerMask; |
8df8e382 | 154 | } |
2a14a7b1 | 155 | |
61d106d3 | 156 | //Before physics selection |
157 | fEventStat->Fill(0.); | |
158 | if (isSelected==0) { | |
159 | PostData(2,fEventStat); | |
160 | return; | |
161 | } | |
162 | //after physics selection | |
163 | fEventStat->Fill(1.); | |
8df8e382 | 164 | |
b2a297fa | 165 | //bz for AliKF |
166 | Double_t bz = InputEvent()->GetMagneticField(); | |
167 | AliKFParticle::SetField( bz ); | |
168 | ||
169 | fDielectron->Process(InputEvent()); | |
8df8e382 | 170 | |
b2a297fa | 171 | if(fDielectron->HasCandidates()){ |
2a14a7b1 | 172 | AliAODEvent *aod = ((AliAODHandler*)((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler()))->GetAOD(); |
173 | ||
174 | //replace the references of the legs with the AOD references | |
175 | TObjArray *obj = 0x0; | |
176 | for(Int_t i=0; i < 10; i++ ){ | |
177 | obj = (TObjArray*)((*(fDielectron->GetPairArraysPointer()))->UncheckedAt(i)); | |
178 | if(!obj) continue; | |
179 | for(int j=0;j<obj->GetEntriesFast();j++){ | |
180 | AliAODTrack *leg1 = 0x0; | |
181 | AliAODTrack *leg2 = 0x0; | |
182 | AliDielectronPair *pairObj = (AliDielectronPair*)obj->UncheckedAt(j); | |
183 | Int_t id1 = ((AliVTrack*)pairObj->GetFirstDaughter())->GetID(); | |
184 | Int_t id2 = ((AliVTrack*)pairObj->GetSecondDaughter())->GetID(); | |
185 | ||
186 | for(Int_t it=0;it<aod->GetNumberOfTracks();it++){ | |
187 | if(aod->GetTrack(it)->GetID() == id1) leg1 = aod->GetTrack(it); | |
188 | if(aod->GetTrack(it)->GetID() == id2) leg2 = aod->GetTrack(it); | |
189 | } | |
190 | if(!leg1 || !leg2) continue; | |
191 | ||
192 | if(man->GetInputEventHandler()->IsA()==AliAODInputHandler::Class()){ | |
193 | leg1->ResetBit(kIsReferenced); | |
194 | leg1->SetUniqueID(0); | |
195 | leg2->ResetBit(kIsReferenced); | |
196 | leg2->SetUniqueID(0); | |
8df8e382 | 197 | } |
2a14a7b1 | 198 | pairObj->SetRefFirstDaughter(leg1); |
199 | pairObj->SetRefSecondDaughter(leg2); | |
8df8e382 | 200 | } |
201 | } | |
2a14a7b1 | 202 | |
203 | AliAODExtension *extDielectron = dynamic_cast<AliAODHandler*> ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler())->GetFilteredAOD("AliAOD.Dielectron.root"); | |
b2a297fa | 204 | extDielectron->SelectEvent(); |
61d106d3 | 205 | //after candidate selection |
206 | fEventStat->Fill(2.); | |
207 | ||
b2a297fa | 208 | //see if dielectron candidate branch exists, if not create is |
209 | TTree *t=extDielectron->GetTree(); | |
2a14a7b1 | 210 | |
211 | if(!t->GetListOfBranches()->GetEntries() && man->GetInputEventHandler()->IsA()==AliAODInputHandler::Class()) | |
212 | t->Branch(aod->GetList()); | |
213 | ||
b2a297fa | 214 | if (!t->GetBranch("dielectrons")){ |
215 | t->Bronch("dielectrons","TObjArray",fDielectron->GetPairArraysPointer()); | |
216 | } | |
2a14a7b1 | 217 | |
218 | if(man->GetInputEventHandler()->IsA()==AliAODInputHandler::Class()) t->Fill(); | |
b2a297fa | 219 | } |
220 | ||
221 | PostData(1, const_cast<THashList*>(fDielectron->GetHistogramList())); | |
61d106d3 | 222 | PostData(2,fEventStat); |
b2a297fa | 223 | } |
224 |