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5a5a1232 | 1 | // $Header$ |
2 | ||
3 | #include "EventAlieve.h" | |
4 | #include <Reve/Reve.h> | |
5 | ||
6 | #include <AliRunLoader.h> | |
7 | #include <AliESD.h> | |
8 | ||
9 | #include <TFile.h> | |
10 | #include <TTree.h> | |
11 | ||
12 | #include <TROOT.h> | |
13 | #include <TSystem.h> | |
14 | ||
15 | using namespace Reve; | |
16 | using namespace Alieve; | |
17 | ||
18 | //______________________________________________________________________ | |
19 | // Event | |
20 | // | |
21 | ||
22 | ClassImp(Event) | |
23 | ||
24 | Event* Alieve::gEvent = 0; | |
25 | ||
26 | Bool_t Alieve::Event::fgUseRunLoader = true; | |
27 | Bool_t Alieve::Event::fgUseESDTree = true; | |
28 | ||
29 | void Event::Initialize(Bool_t use_runloader, Bool_t use_esd) | |
30 | { | |
31 | static const Exc_t eH("Event::Initialize "); | |
32 | ||
33 | fgUseRunLoader = use_runloader; | |
34 | fgUseESDTree = use_esd; | |
35 | ||
36 | /* | |
37 | if(fgUseRunLoader == false && fgUseESDTree == false) | |
38 | throw(eH + "should use at least one data source."); | |
39 | ||
40 | if(fgUseRunLoader) { | |
41 | AssertMacro("loadlibs.C"); | |
42 | } | |
43 | else if(fgUseESDTree) { | |
44 | gSystem->Load("libESD.so"); | |
45 | } | |
46 | */ | |
47 | } | |
48 | ||
49 | /**************************************************************************/ | |
50 | ||
51 | void Event::Init() | |
52 | { | |
53 | fRunLoader = 0; | |
54 | fESDFile = 0; | |
55 | fESDTree = 0; | |
56 | fESD = 0; | |
57 | } | |
58 | ||
59 | Event::Event() : TNamed(), fEventId(0) | |
60 | { | |
61 | Init(); | |
62 | } | |
63 | ||
64 | Event::Event(TString path, Int_t ev) : fPath(path), fEventId(ev) | |
65 | { | |
66 | Init(); | |
67 | Open(); | |
68 | } | |
69 | ||
70 | /**************************************************************************/ | |
71 | ||
72 | void Event::Open() | |
73 | { | |
74 | static const Exc_t eH("Event::Open "); | |
75 | ||
76 | gSystem->ExpandPathName(fPath); | |
77 | if(fPath[0] != '/') | |
78 | fPath = Form("%s/%s", gSystem->WorkingDirectory(), fPath.Data()); | |
79 | ||
80 | if(fgUseRunLoader) { | |
81 | TString ga_path(Form("%s/galice.root", fPath.Data())); | |
82 | if(gSystem->AccessPathName(ga_path, kReadPermission)) | |
83 | throw(eH + "can not read '" + ga_path + "'."); | |
84 | fRunLoader = AliRunLoader::Open(ga_path); | |
85 | if(!fRunLoader) | |
86 | throw(eH + "failed opening ALICE run loader from '" + ga_path + "'."); | |
87 | { | |
88 | TString alice_path = fPath + "/"; | |
89 | fRunLoader->SetDirName(alice_path); | |
90 | } | |
91 | if(fRunLoader->LoadgAlice() != 0) { | |
92 | throw(eH + "failed loading gAlice."); | |
93 | } | |
94 | ||
95 | if(fRunLoader->GetEvent(fEventId) != 0) { | |
96 | throw(eH + "failed getting required event."); | |
97 | } | |
98 | } | |
99 | ||
100 | if(fgUseESDTree) { | |
101 | TString p(Form("%s/AliESDs.root", fPath.Data())); | |
102 | fESDFile = new TFile(p); | |
103 | if(fESDFile->IsZombie()) { | |
104 | delete fESDFile; fESDFile = 0; | |
105 | throw(eH + "failed opening ALICE ESD from '" + p + "'."); | |
106 | } | |
107 | ||
108 | fESDTree = (TTree*) fESDFile->Get("esdTree"); | |
109 | if(fESDTree == 0) | |
110 | throw(eH + "failed getting the esdTree."); | |
111 | fESDTree->SetBranchAddress("ESD", &fESD); | |
112 | if(fESDTree->GetEntry(fEventId) <= 0) | |
113 | throw(eH + "failed getting required event."); | |
114 | } | |
115 | ||
116 | SetName(Form("Event%d", fEventId)); | |
117 | SetTitle(fPath); | |
118 | } | |
119 | ||
120 | void Event::Close() | |
121 | { | |
122 | ||
123 | } | |
124 | ||
125 | /**************************************************************************/ | |
126 | /**************************************************************************/ | |
127 | ||
128 | // Static convenience functions. | |
129 | ||
130 | AliRunLoader* Event::AssertRunLoader() | |
131 | { | |
132 | static const Exc_t eH("Event::AssertRunLoader "); | |
133 | ||
134 | if(gEvent == 0) | |
135 | throw(eH + "ALICE event not ready."); | |
136 | if(gEvent->fRunLoader == 0) | |
137 | throw(eH + "AliRunLoader not initialised."); | |
138 | return gEvent->fRunLoader; | |
139 | } | |
140 | ||
141 | AliESD* Event::AssertESD() | |
142 | { | |
143 | static const Exc_t eH("Event::AssertESD "); | |
144 | ||
145 | if(gEvent == 0) | |
146 | throw(eH + "ALICE event not ready."); | |
147 | if(gEvent->fESD == 0) | |
148 | throw(eH + "AliESD not initialised."); | |
149 | return gEvent->fESD; | |
150 | } |