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8d169fb2 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, 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 | // AliAnalysisTaskRL class | |
20 | // Task that gives access to the run loader | |
21 | // Origin: Panos Christakoglou, UOA-CERN, Panos.Christakoglou@cern.ch | |
22 | //----------------------------------------------------------------- | |
23 | ||
24 | #include "AliAnalysisTaskRL.h" | |
25 | #include "AliRunLoader.h" | |
26 | #include "AliStack.h" | |
27 | #include "AliHeader.h" | |
28 | ||
29 | ||
30 | #include <TTree.h> | |
6b61a3ef | 31 | #include <TChain.h> |
8d169fb2 | 32 | #include <TFile.h> |
33 | ||
34 | ClassImp(AliAnalysisTaskRL) | |
35 | ||
36 | //___________________________________________________________________________ | |
37 | AliAnalysisTaskRL::AliAnalysisTaskRL() : | |
38 | AliAnalysisTask(), | |
39 | fTree(0), fRunLoader(0), | |
6b61a3ef | 40 | fKinematicsLoaded(kFALSE), fHeaderLoaded(kFALSE), fTreeNumber(-1) { |
8d169fb2 | 41 | // |
42 | // Constructor. Initialization of pointers | |
43 | // | |
44 | } | |
45 | ||
46 | //___________________________________________________________________________ | |
47 | AliAnalysisTaskRL::AliAnalysisTaskRL(const char *name, const char *title) : | |
48 | AliAnalysisTask(name,title), | |
49 | fTree(0), fRunLoader(0), | |
50 | fKinematicsLoaded(kFALSE), fHeaderLoaded(kFALSE) { | |
51 | // Constructor. | |
52 | } | |
53 | ||
54 | //___________________________________________________________________________ | |
55 | AliAnalysisTaskRL::~AliAnalysisTaskRL() { | |
56 | // | |
57 | // Destructor | |
58 | // | |
59 | DeleteRunLoader(); | |
60 | } | |
61 | ||
62 | //___________________________________________________________________________ | |
63 | Bool_t AliAnalysisTaskRL::GetEntry(Long64_t ientry) { | |
64 | //returns the entry of the run loader | |
65 | if(fRunLoader) { | |
66 | if(fRunLoader->GetEvent((Int_t)ientry) != 0) | |
67 | return kFALSE; | |
68 | } | |
69 | return kTRUE; | |
70 | } | |
71 | ||
72 | //___________________________________________________________________________ | |
73 | AliRunLoader *AliAnalysisTaskRL::GetRunLoader() { | |
74 | // Returns AliRun instance corresponding to current ESD active in fTree | |
75 | // Loads galice.root, the file is identified by replacing "AliESDs" to | |
76 | // "galice" in the file path of the ESD file. | |
77 | ||
78 | fTree = (TTree *)AliAnalysisTask::GetInputData(0); | |
6b61a3ef | 79 | Int_t iTree = ((TChain *)AliAnalysisTask::GetInputData(0))->GetTreeNumber(); |
80 | if (iTree != fTreeNumber) { | |
81 | DeleteRunLoader(); | |
82 | fTreeNumber = iTree; | |
83 | } | |
84 | ||
85 | ||
8d169fb2 | 86 | if (!fRunLoader) { |
87 | if (!fTree->GetCurrentFile()) | |
88 | return 0; | |
89 | ||
90 | TString fileName(fTree->GetCurrentFile()->GetName()); | |
6b61a3ef | 91 | printf("Current file %s \n", fileName.Data()); |
92 | ||
8d169fb2 | 93 | fileName.ReplaceAll("AliESDs", "galice"); |
94 | ||
95 | // temporary workaround for PROOF bug #18505 | |
96 | fileName.ReplaceAll("#galice.root#galice.root", "#galice.root"); | |
97 | ||
98 | fRunLoader = AliRunLoader::Open(fileName); | |
99 | if (!fRunLoader) | |
100 | return 0; | |
101 | fRunLoader->GetEvent((Int_t)(fTree->GetTree()->GetReadEntry())); | |
102 | } | |
103 | ||
104 | return fRunLoader; | |
105 | } | |
106 | ||
107 | //___________________________________________________________________________ | |
108 | void AliAnalysisTaskRL::DeleteRunLoader() { | |
109 | // | |
110 | // deletes the runloader | |
111 | // | |
112 | if (fRunLoader) { | |
113 | fRunLoader->Delete(); | |
114 | fRunLoader = 0; | |
115 | } | |
116 | ||
117 | fKinematicsLoaded = kFALSE; | |
118 | fHeaderLoaded = kFALSE; | |
119 | } | |
120 | ||
121 | //___________________________________________________________________________ | |
122 | AliHeader* AliAnalysisTaskRL::GetHeader() { | |
123 | // Returns header retrieved from RunLoader | |
124 | ||
125 | AliRunLoader* runLoader = GetRunLoader(); | |
126 | if (!runLoader) | |
127 | return 0; | |
128 | ||
129 | if (fHeaderLoaded == kFALSE) | |
130 | if (runLoader->LoadHeader() != 0) | |
131 | return 0; | |
132 | ||
133 | fHeaderLoaded = kTRUE; | |
134 | ||
135 | return runLoader->GetHeader(); | |
136 | } | |
137 | ||
138 | //___________________________________________________________________________ | |
139 | AliStack* AliAnalysisTaskRL::GetStack() { | |
140 | // Returns stack retrieved from RunLoader | |
141 | ||
142 | AliRunLoader* runLoader = GetRunLoader(); | |
143 | if (!runLoader) | |
144 | return 0; | |
145 | ||
146 | if (fKinematicsLoaded == kFALSE) | |
147 | if (runLoader->LoadKinematics() != 0) | |
148 | return 0; | |
149 | ||
150 | fKinematicsLoaded = kTRUE; | |
151 | ||
152 | return runLoader->Stack(); | |
153 | } |