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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> | |
ffbede40 | 27 | #include <AliAODInputHandler.h> |
b2a297fa | 28 | #include <AliAnalysisManager.h> |
29 | #include <AliVEvent.h> | |
8df8e382 | 30 | #include <AliInputEventHandler.h> |
31 | #include <AliESDInputHandler.h> | |
2a14a7b1 | 32 | #include <AliAODInputHandler.h> |
b2a297fa | 33 | |
34 | #include "AliDielectron.h" | |
8df8e382 | 35 | #include "AliDielectronMC.h" |
b2a297fa | 36 | #include "AliDielectronHistos.h" |
8df8e382 | 37 | #include "AliDielectronVarManager.h" |
b2a297fa | 38 | #include "AliAnalysisTaskDielectronFilter.h" |
39 | ||
40 | ClassImp(AliAnalysisTaskDielectronFilter) | |
41 | ||
42 | //_________________________________________________________________________________ | |
43 | AliAnalysisTaskDielectronFilter::AliAnalysisTaskDielectronFilter() : | |
2a14a7b1 | 44 | AliAnalysisTaskSE(), |
45 | fDielectron(0), | |
46 | fSelectPhysics(kTRUE), | |
47 | fTriggerMask(AliVEvent::kMB), | |
fb7d2d99 | 48 | fEventStat(0x0), |
49 | fStoreLikeSign(kFALSE) | |
b2a297fa | 50 | { |
51 | // | |
52 | // Constructor | |
53 | // | |
54 | } | |
55 | ||
56 | //_________________________________________________________________________________ | |
57 | AliAnalysisTaskDielectronFilter::AliAnalysisTaskDielectronFilter(const char *name) : | |
2a14a7b1 | 58 | AliAnalysisTaskSE(name), |
59 | fDielectron(0), | |
60 | fSelectPhysics(kTRUE), | |
61 | fTriggerMask(AliVEvent::kMB), | |
fb7d2d99 | 62 | fEventStat(0x0), |
63 | fStoreLikeSign(kFALSE) | |
b2a297fa | 64 | { |
65 | // | |
66 | // Constructor | |
67 | // | |
68 | DefineInput(0,TChain::Class()); | |
69 | DefineOutput(1, THashList::Class()); | |
61d106d3 | 70 | DefineOutput(2, TH1D::Class()); |
b2a297fa | 71 | } |
72 | ||
73 | //_________________________________________________________________________________ | |
74 | void AliAnalysisTaskDielectronFilter::Init() | |
75 | { | |
76 | // Initialization | |
77 | if (fDebug > 1) AliInfo("Init() \n"); | |
78 | ||
79 | // require AOD handler | |
80 | AliAODHandler *aodH = (AliAODHandler*)((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler()); | |
c8f0f810 | 81 | if (!aodH) AliFatal("No AOD handler. Halting."); |
82 | ||
b2a297fa | 83 | aodH->AddFilteredAOD("AliAOD.Dielectron.root", "DielectronEvents"); |
84 | // AddAODBranch("AliDielectronCandidates",fDielectron->GetPairArraysPointer(),"deltaAOD.Dielectron.root"); | |
85 | } | |
86 | ||
61d106d3 | 87 | //_________________________________________________________________________________ |
88 | void AliAnalysisTaskDielectronFilter::UserCreateOutputObjects() | |
89 | { | |
90 | // | |
91 | // Initilise histograms | |
92 | // | |
c8f0f810 | 93 | |
94 | //require dielectron framework | |
95 | if (!fDielectron) { | |
96 | AliFatal("Dielectron framework class required. Please create and instance with proper cuts and set it via 'SetDielectron' before executing this task!!!"); | |
97 | return; | |
98 | } | |
99 | fDielectron->Init(); | |
100 | ||
61d106d3 | 101 | if (!fEventStat){ |
102 | fEventStat=new TH1D("hEventStat","Event statistics",5,0,5); | |
103 | fEventStat->GetXaxis()->SetBinLabel(1,"Before Phys. Sel."); | |
104 | fEventStat->GetXaxis()->SetBinLabel(2,"After Phys. Sel."); | |
105 | fEventStat->GetXaxis()->SetBinLabel(3,"After Cand. Sel."); | |
106 | } | |
2a14a7b1 | 107 | |
61d106d3 | 108 | PostData(2,fEventStat); |
109 | } | |
110 | ||
b2a297fa | 111 | //_________________________________________________________________________________ |
112 | void AliAnalysisTaskDielectronFilter::UserExec(Option_t *) | |
113 | { | |
114 | // | |
115 | // Main loop. Called for every event | |
116 | // | |
8df8e382 | 117 | |
b2a297fa | 118 | if (!fDielectron) return; |
119 | ||
8df8e382 | 120 | AliAnalysisManager *man=AliAnalysisManager::GetAnalysisManager(); |
121 | AliESDInputHandler *esdHandler=0x0; | |
122 | if ( (esdHandler=dynamic_cast<AliESDInputHandler*>(man->GetInputEventHandler())) && esdHandler->GetESDpid() ){ | |
123 | AliDielectronVarManager::SetESDpid(esdHandler->GetESDpid()); | |
124 | } else { | |
125 | //load esd pid bethe bloch parameters depending on the existance of the MC handler | |
126 | // yes: MC parameters | |
127 | // no: data parameters | |
2a14a7b1 | 128 | |
129 | //ESD case | |
130 | if (man->GetInputEventHandler()->IsA()==AliESDInputHandler::Class()){ | |
131 | if (!AliDielectronVarManager::GetESDpid()){ | |
132 | ||
133 | if (AliDielectronMC::Instance()->HasMC()) { | |
134 | AliDielectronVarManager::InitESDpid(); | |
135 | } else { | |
136 | AliDielectronVarManager::InitESDpid(1); | |
137 | } | |
138 | } | |
139 | } | |
140 | //AOD case | |
ffbede40 | 141 | if (man->GetInputEventHandler()->IsA()==AliAODInputHandler::Class()){ |
2a14a7b1 | 142 | if (!AliDielectronVarManager::GetAODpidUtil()){ |
143 | if (AliDielectronMC::Instance()->HasMC()) { | |
144 | AliDielectronVarManager::InitAODpidUtil(); | |
145 | } else { | |
146 | AliDielectronVarManager::InitAODpidUtil(1); | |
147 | } | |
8df8e382 | 148 | } |
149 | } | |
150 | } | |
2a14a7b1 | 151 | |
8df8e382 | 152 | // Was event selected ? |
153 | AliInputEventHandler* inputHandler = (AliInputEventHandler*) (man->GetInputEventHandler()); | |
61d106d3 | 154 | UInt_t isSelected = AliVEvent::kAny; |
8df8e382 | 155 | if( fSelectPhysics && inputHandler && inputHandler->GetEventSelection() ) { |
156 | isSelected = inputHandler->IsEventSelected(); | |
61d106d3 | 157 | isSelected&=fTriggerMask; |
8df8e382 | 158 | } |
2a14a7b1 | 159 | |
61d106d3 | 160 | //Before physics selection |
161 | fEventStat->Fill(0.); | |
162 | if (isSelected==0) { | |
163 | PostData(2,fEventStat); | |
164 | return; | |
165 | } | |
166 | //after physics selection | |
167 | fEventStat->Fill(1.); | |
8df8e382 | 168 | |
b2a297fa | 169 | //bz for AliKF |
170 | Double_t bz = InputEvent()->GetMagneticField(); | |
171 | AliKFParticle::SetField( bz ); | |
172 | ||
173 | fDielectron->Process(InputEvent()); | |
8df8e382 | 174 | |
fb7d2d99 | 175 | Bool_t hasCand = kFALSE; |
176 | if(fStoreLikeSign) hasCand = (fDielectron->HasCandidates() || fDielectron->HasCandidatesLikeSign()); | |
177 | else hasCand = (fDielectron->HasCandidates()); | |
178 | ||
179 | if(hasCand){ | |
45b2b1b8 | 180 | AliAODHandler *aodH=(AliAODHandler*)((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler()); |
181 | AliAODEvent *aod = aodH->GetAOD(); | |
2a14a7b1 | 182 | |
183 | //replace the references of the legs with the AOD references | |
184 | TObjArray *obj = 0x0; | |
185 | for(Int_t i=0; i < 10; i++ ){ | |
186 | obj = (TObjArray*)((*(fDielectron->GetPairArraysPointer()))->UncheckedAt(i)); | |
187 | if(!obj) continue; | |
188 | for(int j=0;j<obj->GetEntriesFast();j++){ | |
189 | AliAODTrack *leg1 = 0x0; | |
190 | AliAODTrack *leg2 = 0x0; | |
191 | AliDielectronPair *pairObj = (AliDielectronPair*)obj->UncheckedAt(j); | |
192 | Int_t id1 = ((AliVTrack*)pairObj->GetFirstDaughter())->GetID(); | |
193 | Int_t id2 = ((AliVTrack*)pairObj->GetSecondDaughter())->GetID(); | |
194 | ||
195 | for(Int_t it=0;it<aod->GetNumberOfTracks();it++){ | |
196 | if(aod->GetTrack(it)->GetID() == id1) leg1 = aod->GetTrack(it); | |
197 | if(aod->GetTrack(it)->GetID() == id2) leg2 = aod->GetTrack(it); | |
198 | } | |
199 | if(!leg1 || !leg2) continue; | |
200 | ||
201 | if(man->GetInputEventHandler()->IsA()==AliAODInputHandler::Class()){ | |
202 | leg1->ResetBit(kIsReferenced); | |
203 | leg1->SetUniqueID(0); | |
204 | leg2->ResetBit(kIsReferenced); | |
205 | leg2->SetUniqueID(0); | |
8df8e382 | 206 | } |
2a14a7b1 | 207 | pairObj->SetRefFirstDaughter(leg1); |
208 | pairObj->SetRefSecondDaughter(leg2); | |
8df8e382 | 209 | } |
210 | } | |
2a14a7b1 | 211 | |
45b2b1b8 | 212 | AliAODExtension *extDielectron = aodH->GetFilteredAOD("AliAOD.Dielectron.root"); |
b2a297fa | 213 | extDielectron->SelectEvent(); |
61d106d3 | 214 | //after candidate selection |
215 | fEventStat->Fill(2.); | |
216 | ||
b2a297fa | 217 | //see if dielectron candidate branch exists, if not create is |
218 | TTree *t=extDielectron->GetTree(); | |
2a14a7b1 | 219 | |
220 | if(!t->GetListOfBranches()->GetEntries() && man->GetInputEventHandler()->IsA()==AliAODInputHandler::Class()) | |
221 | t->Branch(aod->GetList()); | |
222 | ||
b2a297fa | 223 | if (!t->GetBranch("dielectrons")){ |
224 | t->Bronch("dielectrons","TObjArray",fDielectron->GetPairArraysPointer()); | |
225 | } | |
2a14a7b1 | 226 | |
227 | if(man->GetInputEventHandler()->IsA()==AliAODInputHandler::Class()) t->Fill(); | |
b2a297fa | 228 | } |
229 | ||
230 | PostData(1, const_cast<THashList*>(fDielectron->GetHistogramList())); | |
61d106d3 | 231 | PostData(2,fEventStat); |
b2a297fa | 232 | } |
233 |