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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 | /*$Id$ | |
17 | ||
18 | */ | |
19 | ||
20 | ///////////////////////////////////////////////////////////// | |
21 | // | |
22 | // Filtering task: | |
23 | // Selection of only 1% of the events for which to keep | |
24 | // the ESD friend | |
25 | // | |
26 | // ///////////////////////////////////////////////////////////// | |
27 | ||
28 | #include <TTree.h> | |
29 | #include <TChain.h> | |
30 | ||
31 | #include "AliLog.h" | |
32 | #include "AliESDInputHandler.h" | |
33 | #include "AliESDtrack.h" | |
34 | #include "AliESDEvent.h" | |
35 | #include "AliESDfriend.h" | |
36 | #include "AliAnalysisTaskFilter.h" | |
37 | #include "AliAnalysisManager.h" | |
38 | #include "AliAnalysisTaskFilterSteer.h" | |
39 | #include "TRandom.h" | |
40 | ||
41 | ||
42 | ClassImp(AliAnalysisTaskFilterSteer) | |
43 | ||
44 | ||
45 | //________________________________________________________________________ | |
46 | AliAnalysisTaskFilterSteer::AliAnalysisTaskFilterSteer(): | |
47 | AliAnalysisTaskFilter(), | |
48 | fFraction(0.01), | |
49 | fESDInput(0), | |
50 | fESDfriendInput(0) | |
51 | { | |
52 | // Constructor | |
53 | ||
54 | // Define input and output slots here | |
55 | // Input slot #0 works with a TChain | |
56 | DefineInput(0, TChain::Class()); | |
57 | // Output slot #0 writes into a TTree | |
58 | //DefineOutput(0,TTree::Class()); | |
59 | } | |
60 | ||
61 | //________________________________________________________________________ | |
62 | AliAnalysisTaskFilterSteer::AliAnalysisTaskFilterSteer(const char* name): | |
63 | AliAnalysisTaskFilter(name), | |
64 | fFraction(0.01), | |
65 | fESDInput(0), | |
66 | fESDfriendInput(0) | |
67 | { | |
68 | // Constructor | |
69 | ||
70 | // Define input and output slots here | |
71 | // Input slot #0 works with a TChain | |
72 | DefineInput(0, TChain::Class()); | |
73 | // Output slot #0 writes into a TTree | |
74 | //DefineOutput(0,TTree::Class()); | |
75 | } | |
76 | ||
77 | //________________________________________________________________________ | |
78 | AliAnalysisTaskFilterSteer::~AliAnalysisTaskFilterSteer() | |
79 | { | |
80 | ||
81 | // dtor | |
82 | ||
83 | } | |
84 | ||
85 | //________________________________________________________________________ | |
86 | void AliAnalysisTaskFilterSteer::Init() | |
87 | { | |
88 | // Initialization | |
89 | ||
90 | return; | |
91 | } | |
92 | ||
93 | //________________________________________________________________________ | |
94 | void AliAnalysisTaskFilterSteer::UserCreateOutputObjects() | |
95 | { | |
96 | // | |
97 | // Create the output container | |
98 | // | |
99 | ||
100 | return; | |
101 | } | |
102 | ||
103 | //________________________________________________________________________ | |
104 | void AliAnalysisTaskFilterSteer::UserExec(Option_t */*option*/) | |
105 | { | |
106 | ||
107 | // | |
108 | // Applying random selection of the events | |
109 | ||
110 | fESDInput = dynamic_cast<AliESDEvent*>(InputEvent()); // get the input ESD | |
111 | fESDfriendInput = InputFriend(); // get the input friend | |
112 | if(!fESDInput) { | |
113 | printf("AliAnalysisTaskFilterSteer::Exec(): no ESD \n"); | |
114 | return; | |
115 | } | |
116 | if(!fESDfriendInput) { | |
117 | printf("AliAnalysisTaskFilterSteer::Exec(): no ESDfriend \n"); | |
118 | return; | |
119 | } | |
120 | ||
121 | // attach ESDfriend | |
122 | ||
123 | AliESDfriend* esdFriendOutput = (AliESDfriend*)ESDfriend(); | |
124 | AliDebug(3,Form("Number of ESD tracks in input = %d ",fESDInput->GetNumberOfTracks())); | |
125 | AliDebug(3,Form("Number of tracks in input friends = %d ",fESDfriendInput->GetNumberOfTracks())); | |
126 | AliDebug(3,Form("Number of tracks in output friendsNew before filtering = %d ",esdFriendOutput->GetNumberOfTracks())); | |
127 | ||
128 | // | |
129 | // keeping all the tracks for the randomly "fFraction" of the total number of events | |
130 | // | |
131 | ||
132 | for (Int_t i = 0; i< fESDInput->GetNumberOfTracks(); i++){ | |
133 | AliESDfriendTrack* tOld = (AliESDfriendTrack*)fESDfriendInput->GetTrack(i); | |
134 | AddFriendTrackAt(tOld,i); | |
135 | } | |
136 | AliDebug(2,Form("Number of tracks in output friendsNew after filtering = %d ",esdFriendOutput->GetNumberOfTracks())); | |
137 | AliDebug(2,Form("Number of tracks in output friendsNew after filtering with GetEntries() = %d ",esdFriendOutput->GetEntriesInTracks())); | |
138 | ||
139 | return; | |
140 | } | |
141 | ||
142 | //________________________________________________________________________ | |
143 | void AliAnalysisTaskFilterSteer::Terminate(Option_t */*option*/) | |
144 | { | |
145 | // Terminate analysis | |
146 | // | |
147 | AliDebug(2,"AliAnalysisTaskFilterSteer: Terminate() \n"); | |
148 | ||
149 | return; | |
150 | } | |
151 | //________________________________________________________________________ | |
152 | Bool_t AliAnalysisTaskFilterSteer::UserSelectESDfriendForCurrentEvent() | |
153 | { | |
154 | // | |
155 | // Selecting or discarding current event | |
156 | // | |
157 | Double_t number = gRandom->Rndm(); | |
158 | if (number<fFraction){ | |
159 | // keeping event | |
160 | AliDebug(2,Form("*****************Selecting event (number = %f)",number)); | |
161 | return kTRUE; | |
162 | } | |
163 | AliDebug(2,Form("*****************Skipping event (number = %f)",number)); | |
164 | return kFALSE; | |
165 | } |