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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 ///////////////////////////////////////////////
17 // AliAnalysisTaskScalarProduct:
18 //
19 // analysis task for Scalar Product Method
20 //
21 // Author: Naomi van der Kolk (kolk@nikhef.nl)
22 ///////////////////////////////////////////////
23
24
25 #include "Riostream.h" //needed as include
26
27 class TFile;
28 class TList;
29 class AliAnalysisTaskSE;
30
31 #include "TProfile.h"  //needed as include
32 #include "AliAnalysisManager.h"
33 #include "AliFlowEventSimple.h"
34
35 #include "AliAnalysisTaskScalarProduct.h"
36 #include "AliFlowAnalysisWithScalarProduct.h"
37 #include "AliFlowCommonHist.h"
38 #include "AliFlowCommonHistResults.h"
39
40 #include "AliLog.h"
41
42 using std::endl;
43 using std::cout;
44 ClassImp(AliAnalysisTaskScalarProduct)
45
46 //________________________________________________________________________
47 AliAnalysisTaskScalarProduct::AliAnalysisTaskScalarProduct(const char *name, Bool_t usePhiWeights) : 
48   AliAnalysisTaskSE(name), 
49   fEvent(NULL),
50   fSP(NULL),
51   fListHistos(NULL),
52   fMinimalBook(kFALSE),
53   fUsePhiWeights(usePhiWeights),
54   fListWeights(NULL),
55   fRelDiffMsub(1.0),
56   fApplyCorrectionForNUA(kFALSE),
57   fHarmonic(2),
58   fNormalizationType(1),
59   fTotalQvector(NULL) 
60 {
61   // Constructor
62   AliDebug(2,"AliAnalysisTaskScalarProduct::AliAnalysisTaskScalarProduct(const char *name)");
63
64   // Define input and output slots here
65   // Input slot #0 works with an AliFlowEventSimple
66   DefineInput(0, AliFlowEventSimple::Class());
67   // Input slot #1 is needed for the weights input file
68   if(usePhiWeights) {
69     DefineInput(1, TList::Class()); }
70   // Output slot #0 writes into a TList container
71   DefineOutput(1, TList::Class());
72
73   // Total Q-vector is: "QaQb" (means Qa+Qb), "Qa"  or "Qb"
74   fTotalQvector = new TString("QaQb");
75 }
76
77 //________________________________________________________________________
78 AliAnalysisTaskScalarProduct::AliAnalysisTaskScalarProduct() : 
79   AliAnalysisTaskSE(), 
80   fEvent(NULL),
81   fSP(NULL),
82   fListHistos(NULL),
83   fMinimalBook(kFALSE),
84   fUsePhiWeights(kFALSE),
85   fListWeights(NULL),
86   fRelDiffMsub(1.0),
87   fApplyCorrectionForNUA(kFALSE),
88   fHarmonic(0),
89   fNormalizationType(1),
90   fTotalQvector(NULL) 
91   {
92   // Constructor
93     AliDebug(2,"AliAnalysisTaskScalarProduct::AliAnalysisTaskScalarProduct()");
94 }
95
96 //________________________________________________________________________
97 AliAnalysisTaskScalarProduct::~AliAnalysisTaskScalarProduct()
98 {
99   //
100   // Destructor
101   //
102
103   // histograms are in the output list and deleted when the output
104   // list is deleted by the TSelector dtor
105
106   //  if (ListHistos) {
107   //    delete fListHistos;
108   //    fListHistos = NULL;
109   //  }
110 }
111
112 //________________________________________________________________________
113 void AliAnalysisTaskScalarProduct::UserCreateOutputObjects() 
114 {
115   // Called at every worker node to initialize
116   AliDebug(2,"AliAnalysisTaskScalarProduct::CreateOutputObjects()");
117   
118   //Analyser
119   fSP = new AliFlowAnalysisWithScalarProduct();
120   fSP->SetBookOnlyBasicCCH(fMinimalBook);
121
122   //set the allowed relative difference in the subevent multiplicities
123   //fSP->SetRelDiffMsub(fRelDiffMsub); 
124     
125   //apply automatic correction for non-uniform acceptance:
126   if (fApplyCorrectionForNUA) {
127     AliDebug(2,"Corrections for non-uniform acceptance applied in the Scalar Product method");
128   }
129   fSP->SetApplyCorrectionForNUA(fApplyCorrectionForNUA);
130   // harmonic: 
131   fSP->SetHarmonic(fHarmonic);
132   fSP->SetNormalizationType( fNormalizationType );
133   // total Q-vector:
134   Int_t totalQ = 0;
135   if( fTotalQvector->Contains("Qa") ) totalQ += 1;
136   if( fTotalQvector->Contains("Qb") ) totalQ += 2;
137   fSP->SetTotalQvector( totalQ );
138   //for using phi weights:
139   if(fUsePhiWeights) {
140     //pass the flag to the analysis class:
141     fSP->SetUsePhiWeights(fUsePhiWeights);
142     //get data from input slot #1 which is used for weights:
143     if(GetNinputs()==2) {                   
144       fListWeights = (TList*)GetInputData(1); 
145     }
146     //pass the list with weights to the analysis class:
147     if(fListWeights) fSP->SetWeightsList(fListWeights);
148   }
149   
150   fSP-> Init();
151
152   if (fSP->GetHistList()) {
153     fListHistos = fSP->GetHistList();
154   }
155   else {Printf("ERROR: Could not retrieve histogram list"); }
156
157   PostData(1,fListHistos);
158
159 }
160
161 //________________________________________________________________________
162 void AliAnalysisTaskScalarProduct::UserExec(Option_t *) 
163 {
164   // Main loop
165   // Called for each event
166
167
168   fEvent = dynamic_cast<AliFlowEventSimple*>(GetInputData(0));
169   if (fEvent){
170     fSP->ProcessEvent(fEvent);
171   }
172   else {
173     cout << "Warning no input data for Scalar Product task!!!" << endl;
174   }
175     
176   //fListHistos->Print();       
177   PostData(1,fListHistos);
178   
179
180
181 //________________________________________________________________________
182 void AliAnalysisTaskScalarProduct::Terminate(Option_t *) 
183 {
184   // Called once at the end of the query
185   AliFlowAnalysisWithScalarProduct* fSPTerm = new AliFlowAnalysisWithScalarProduct() ;
186   fListHistos = (TList*)GetOutputData(1);
187   if (fListHistos) {
188       fSPTerm -> GetOutputHistograms(fListHistos);
189       fSPTerm -> Finish();
190       PostData(1,fListHistos);
191     }
192     
193   else { cout << "histgram list pointer is empty in Scalar Product" << endl; }
194
195 }