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1 | /************************************************************************** | |
2 | * Copyright(c) 1998-2007, 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 | // Event handler for AOD input | |
20 | // Author: Andreas Morsch, CERN | |
21 | //------------------------------------------------------------------------- | |
22 | ||
23 | #include <TTree.h> | |
24 | #include <TList.h> | |
25 | #include <TNamed.h> | |
26 | #include <TFile.h> | |
27 | ||
28 | #include "AliAODInputHandler.h" | |
29 | #include "AliAODEvent.h" | |
30 | ||
31 | ClassImp(AliAODInputHandler) | |
32 | ||
33 | static Option_t *gAODDataType = "AOD"; | |
34 | ||
35 | //______________________________________________________________________________ | |
36 | AliAODInputHandler::AliAODInputHandler() : | |
37 | AliInputEventHandler(), | |
38 | fEvent(0), | |
39 | fMCEvent(new AliMCEvent()), | |
40 | fFriends(new TList()), | |
41 | fMergeEvents(kFALSE), | |
42 | fFileToMerge(0), | |
43 | fTreeToMerge(0), | |
44 | fAODEventToMerge(0), | |
45 | fMergeOffset(0) | |
46 | { | |
47 | // Default constructor | |
48 | } | |
49 | ||
50 | //______________________________________________________________________________ | |
51 | AliAODInputHandler::AliAODInputHandler(const char* name, const char* title): | |
52 | AliInputEventHandler(name, title), | |
53 | fEvent(0), | |
54 | fMCEvent(new AliMCEvent()), | |
55 | fFriends(new TList()), | |
56 | fMergeEvents(kFALSE), | |
57 | fFileToMerge(0), | |
58 | fTreeToMerge(0), | |
59 | fAODEventToMerge(0), | |
60 | fMergeOffset(0) | |
61 | { | |
62 | // Constructor | |
63 | } | |
64 | ||
65 | //______________________________________________________________________________ | |
66 | AliAODInputHandler::~AliAODInputHandler() | |
67 | { | |
68 | // Destructor | |
69 | fFriends->Delete(); | |
70 | } | |
71 | ||
72 | ||
73 | Bool_t AliAODInputHandler::Init(TTree* tree, Option_t* opt) | |
74 | { | |
75 | // Initialisation necessary for each new tree | |
76 | if (!fMergeEvents) { | |
77 | fTree = tree; | |
78 | TIter next(fFriends); | |
79 | TNamed* obj; | |
80 | ||
81 | if (!fTree) return kFALSE; | |
82 | fTree->GetEntry(0); | |
83 | TString aodTreeFName,aodFriendTreeFName; | |
84 | ||
85 | while((obj = (TNamed*)next())) { | |
86 | if (fTree->GetTree()) { | |
87 | aodTreeFName = (fTree->GetTree()->GetCurrentFile())->GetName(); | |
88 | aodFriendTreeFName = aodTreeFName; | |
89 | aodFriendTreeFName.ReplaceAll("AliAOD.root",obj->GetName()); | |
90 | aodFriendTreeFName.ReplaceAll("AliAODs.root",obj->GetName()); | |
91 | (fTree->GetTree())->AddFriend("aodTree", aodFriendTreeFName.Data()); | |
92 | } else { | |
93 | aodTreeFName = (fTree->GetCurrentFile())->GetName(); | |
94 | aodFriendTreeFName = aodTreeFName; | |
95 | aodFriendTreeFName.ReplaceAll("AliAOD.root",obj->GetName()); | |
96 | aodFriendTreeFName.ReplaceAll("AliAODs.root",obj->GetName()); | |
97 | fTree->AddFriend("aodTree", aodFriendTreeFName.Data()); | |
98 | } | |
99 | } | |
100 | } else { | |
101 | // Friends have to be merged | |
102 | TNamed* filename = (TNamed*) (fFriends->At(0)); | |
103 | fFileToMerge = new TFile(filename->GetName()); | |
104 | if (fFileToMerge) { | |
105 | fFileToMerge->GetObject("aodTree", fTreeToMerge); | |
106 | if (!fAODEventToMerge) fAODEventToMerge = new AliAODEvent(); | |
107 | fAODEventToMerge->ReadFromTree(fTreeToMerge); | |
108 | } | |
109 | } | |
110 | ||
111 | ||
112 | ||
113 | ||
114 | SwitchOffBranches(); | |
115 | SwitchOnBranches(); | |
116 | ||
117 | // Get pointer to AOD event | |
118 | if (!fEvent) fEvent = new AliAODEvent(); | |
119 | ||
120 | fEvent->ReadFromTree(fTree); | |
121 | ||
122 | if (fMixingHandler) fMixingHandler->Init(tree, opt); | |
123 | ||
124 | return kTRUE; | |
125 | } | |
126 | ||
127 | Bool_t AliAODInputHandler::BeginEvent(Long64_t entry) | |
128 | { | |
129 | // | |
130 | TClonesArray* mcParticles = (TClonesArray*) (fEvent->FindListObject("mcparticles")); | |
131 | if (mcParticles) fMCEvent->SetParticleArray(mcParticles); | |
132 | if (fTreeToMerge) fTreeToMerge->GetEntry(entry + fMergeOffset); | |
133 | ||
134 | fIsSelectedResult = fEvent->GetHeader()->GetOfflineTrigger(); | |
135 | ||
136 | if (fMixingHandler) fMixingHandler->BeginEvent(entry); | |
137 | ||
138 | return kTRUE; | |
139 | } | |
140 | ||
141 | Bool_t AliAODInputHandler::Notify(const char* path) | |
142 | { | |
143 | // Notifaction of directory change | |
144 | if (fMixingHandler) fMixingHandler->Notify(path); | |
145 | return kTRUE; | |
146 | } | |
147 | ||
148 | Bool_t AliAODInputHandler::FinishEvent() | |
149 | { | |
150 | // Finish event | |
151 | if (fMixingHandler) fMixingHandler->FinishEvent(); | |
152 | return kTRUE; | |
153 | } | |
154 | ||
155 | void AliAODInputHandler::AddFriend(char* filename) | |
156 | { | |
157 | // Add a friend tree | |
158 | TNamed* obj = new TNamed(filename, filename); | |
159 | fFriends->Add(obj); | |
160 | } | |
161 | ||
162 | Option_t *AliAODInputHandler::GetDataType() const | |
163 | { | |
164 | // Returns handled data type. | |
165 | return gAODDataType; | |
166 | } |