small mods for separate task
[u/mrichter/AliRoot.git] / PWG2 / FLOW / AliFlowTasks / AliAnalysisTaskFlowEvent.cxx
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1c1d4332 1/*************************************************************************
2* Copyright(c) 1998-2008, 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#include "Riostream.h" //needed as include
17#include "TChain.h"
18#include "TTree.h"
19#include "TFile.h" //needed as include
20#include "TList.h"
21
22
23class AliAnalysisTask;
24#include "AliAnalysisManager.h"
25
26#include "AliESDEvent.h"
27#include "AliESDInputHandler.h"
28
29#include "AliAODEvent.h"
30#include "AliAODInputHandler.h"
31
32#include "AliMCEventHandler.h"
33#include "AliMCEvent.h"
34
35#include "AliCFManager.h"
36
37#include "AliAnalysisTaskFlowEvent.h"
38#include "AliFlowEventSimpleMaker.h"
39
40// AliAnalysisTaskFlowEvent:
41//
42// analysis task for filling the flow event
43// from MCEvent, ESD, AOD ....
44// and put it in an output stream so it can
45// be used by the various flow analysis methods
46// for cuts the correction framework is used
47// which also outputs QA histrograms to view
48// the effects of the cuts
49
50
51ClassImp(AliAnalysisTaskFlowEvent)
52
53//________________________________________________________________________
54AliAnalysisTaskFlowEvent::AliAnalysisTaskFlowEvent(const char *name, Bool_t on) :
55 AliAnalysisTask(name, ""),
46bec39c 56// fOutputFile(NULL),
1c1d4332 57 fESD(NULL),
58 fAOD(NULL),
59 fEventMaker(NULL),
60 fAnalysisType("ESD"),
61 fCFManager1(NULL),
62 fCFManager2(NULL),
63 fQAInt(NULL),
64 fQADiff(NULL),
65 fQA(on)
66{
67 // Constructor
68 cout<<"AliAnalysisTaskFlowEvent::AliAnalysisTaskFlowEvent(const char *name)"<<endl;
69
70 // Define input and output slots here
71 // Input slot #0 works with a TChain
72 DefineInput(0, TChain::Class());
46bec39c 73 // Define here the flow event output
74 DefineOutput(0, AliFlowEventSimple::Class());
1c1d4332 75 if(on) {
76 DefineOutput(1, TList::Class());
77 DefineOutput(2, TList::Class()); }
46bec39c 78 // and for testing open an output file
79 // fOutputFile = new TFile("FlowEvents.root","RECREATE");
1c1d4332 80
81}
82
83//________________________________________________________________________
84AliAnalysisTaskFlowEvent::AliAnalysisTaskFlowEvent() :
46bec39c 85 // fOutputFile(NULL),
1c1d4332 86 fESD(NULL),
87 fAOD(NULL),
88 fEventMaker(NULL),
89 fAnalysisType("ESD"),
90 fCFManager1(NULL),
91 fCFManager2(NULL),
92 fQAInt(NULL),
93 fQADiff(NULL),
94 fQA(kFALSE)
95{
96 // Constructor
97 cout<<"AliAnalysisTaskFlowEvent::AliAnalysisTaskFlowEvent()"<<endl;
98}
99
100//________________________________________________________________________
101AliAnalysisTaskFlowEvent::~AliAnalysisTaskFlowEvent()
102{
103 //
104 // Destructor
105 //
106
107 // objects in the output list are deleted
108 // by the TSelector dtor (I hope)
109
110}
111
112//________________________________________________________________________
113void AliAnalysisTaskFlowEvent::ConnectInputData(Option_t *)
114{
115 // Connect ESD or AOD here
116 // Called once
117 cout<<"AliAnalysisTaskFlowEvent::ConnectInputData(Option_t *)"<<endl;
118
119 TTree* tree = dynamic_cast<TTree*> (GetInputData(0));
120 if (!tree) {
121 Printf("ERROR: Could not read chain from input slot 0");
122 } else {
123 // Disable all branches and enable only the needed ones
124 if (fAnalysisType == "MC") {
125 // we want to process only MC
126 tree->SetBranchStatus("*", kFALSE);
127
128 AliESDInputHandler *esdH = dynamic_cast<AliESDInputHandler*> (AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler());
129
130 if (!esdH) {
131 Printf("ERROR: Could not get ESDInputHandler");
132 } else {
133 fESD = esdH->GetEvent();
134 }
135 }
136 else if (fAnalysisType == "ESD" || fAnalysisType == "ESDMC0" || fAnalysisType == "ESDMC1") {
137 tree->SetBranchStatus("*", kFALSE);
138 tree->SetBranchStatus("Tracks.*", kTRUE);
139
140 AliESDInputHandler *esdH = dynamic_cast<AliESDInputHandler*> (AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler());
141
142 if (!esdH) {
143 Printf("ERROR: Could not get ESDInputHandler");
144 } else
145 fESD = esdH->GetEvent();
146 }
147 else if (fAnalysisType == "AOD") {
148 AliAODInputHandler *aodH = dynamic_cast<AliAODInputHandler*> (AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler());
149
150 if (!aodH) {
151 Printf("ERROR: Could not get AODInputHandler");
152 }
153 else {
154 fAOD = aodH->GetEvent();
155 }
156 }
157 else {
158 Printf("!!!!!Wrong analysis type: Only ESD, ESDMC0, ESDMC1, AOD and MC types are allowed!");
159 exit(1);
160
161 }
162 }
163}
164
165//________________________________________________________________________
166void AliAnalysisTaskFlowEvent::CreateOutputObjects()
167{
168 // Called at every worker node to initialize
169 cout<<"AliAnalysisTaskFlowEvent::CreateOutputObjects()"<<endl;
170
171 if (!(fAnalysisType == "AOD" || fAnalysisType == "ESD" || fAnalysisType == "ESDMC0" || fAnalysisType == "ESDMC1" || fAnalysisType == "MC")) {
172 cout<<"WRONG ANALYSIS TYPE! only ESD, ESDMC0, ESDMC1, AOD and MC are allowed."<<endl;
173 exit(1);
174 }
175
176 // Flow Event maker
177 fEventMaker = new AliFlowEventSimpleMaker();
178}
179
180//________________________________________________________________________
181void AliAnalysisTaskFlowEvent::Exec(Option_t *)
182{
183 // Main loop
184 // Called for each event
89f41a6a 185 AliFlowEventSimple* fEvent = NULL;
1c1d4332 186
187 if (fAnalysisType == "MC") {
188
189 // Process MC truth, therefore we receive the AliAnalysisManager and ask it for the AliMCEventHandler
190 // This handler can return the current MC event
191
192 AliMCEventHandler* eventHandler = dynamic_cast<AliMCEventHandler*> (AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
193 if (!eventHandler) {
194 Printf("ERROR: Could not retrieve MC event handler");
195 return;
196 }
197
198 AliMCEvent* mcEvent = eventHandler->MCEvent();
199 if (!mcEvent) {
200 Printf("ERROR: Could not retrieve MC event");
201 return;
202 }
203
204 fCFManager1->SetEventInfo(mcEvent);
205 fCFManager2->SetEventInfo(mcEvent);
206
207 // analysis
208 Printf("MC particles: %d", mcEvent->GetNumberOfTracks());
89f41a6a 209 fEvent = fEventMaker->FillTracks(mcEvent,fCFManager1,fCFManager2);
1c1d4332 210 // here we have the fEvent and want to make it available as an output stream
211 // so no
212 // delete fEvent;
213 }
214 else if (fAnalysisType == "ESD") {
215 if (!fESD) {
216 Printf("ERROR: fESD not available");
217 return;
218 }
219 Printf("There are %d tracks in this event", fESD->GetNumberOfTracks());
220
221 // analysis
89f41a6a 222 fEvent = fEventMaker->FillTracks(fESD,fCFManager1,fCFManager2);
1c1d4332 223 }
224 else if (fAnalysisType == "ESDMC0" || fAnalysisType == "ESDMC1" ) {
225 if (!fESD) {
226 Printf("ERROR: fESD not available");
227 return;
228 }
229 Printf("There are %d tracks in this event", fESD->GetNumberOfTracks());
230
231 AliMCEventHandler* eventHandler = dynamic_cast<AliMCEventHandler*> (AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
232 if (!eventHandler) {
233 Printf("ERROR: Could not retrieve MC event handler");
234 return;
235 }
236
237 AliMCEvent* mcEvent = eventHandler->MCEvent();
238 if (!mcEvent) {
239 Printf("ERROR: Could not retrieve MC event");
240 return;
241 }
242
243 fCFManager1->SetEventInfo(mcEvent);
244 fCFManager2->SetEventInfo(mcEvent);
245
89f41a6a 246
1c1d4332 247 if (fAnalysisType == "ESDMC0") {
248 fEvent = fEventMaker->FillTracks(fESD, mcEvent, fCFManager1, fCFManager2, 0); //0 = kine from ESD, 1 = kine from MC
249 } else if (fAnalysisType == "ESDMC1") {
250 fEvent = fEventMaker->FillTracks(fESD, mcEvent, fCFManager1, fCFManager2, 1); //0 = kine from ESD, 1 = kine from MC
251 }
252 //delete fEvent;
253 //delete mcEvent;
254 }
255
256 else if (fAnalysisType == "AOD") {
257 if (!fAOD) {
258 Printf("ERROR: fAOD not available");
259 return;
260 }
261 Printf("There are %d tracks in this event", fAOD->GetNumberOfTracks());
262
263 // analysis
264 //For the moment don't use CF //AliFlowEventSimple* fEvent = fEventMaker->FillTracks(fAOD,fCFManager1,fCFManager2);
89f41a6a 265 fEvent = fEventMaker->FillTracks(fAOD);
1c1d4332 266 }
267
46bec39c 268 //fListHistos->Print();
269 // fOutputFile->WriteObject(fEvent,"myFlowEventSimple");
1c1d4332 270 PostData(0,fEvent);
271 if (fQA) {
272 PostData(1,fQAInt);
273 PostData(2,fQADiff); }
274}
275
276//________________________________________________________________________
277void AliAnalysisTaskFlowEvent::Terminate(Option_t *)
278{
279 // Called once at the end of the query -- do not call in case of CAF
280
281}