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77843484 | 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 | ||
803d1ab0 | 16 | /* $Id$ */ |
88cb7938 | 17 | |
134d2ab3 | 18 | #include <TROOT.h> |
024a7e64 | 19 | #include <TFile.h> |
20 | #include <TObjString.h> | |
21 | ||
22 | #include "AliLoader.h" | |
23 | #include "AliRun.h" | |
24 | #include "AliStream.h" | |
25 | ||
88cb7938 | 26 | //////////////////////////////////////////////////////////////////////// |
27 | // | |
77843484 | 28 | // AliStream.cxx |
88cb7938 | 29 | // |
77843484 | 30 | // - store file names associated with a given stream |
31 | // - open and close files | |
32 | // - return serial event number of the next event in the stream | |
33 | // and the TFile pointer for a proper file | |
af7ba10c | 34 | // Author: Jiri Chudoba (CERN), 2001 |
88cb7938 | 35 | // |
36 | //////////////////////////////////////////////////////////////////////// | |
77843484 | 37 | |
77843484 | 38 | ClassImp(AliStream) |
39 | ||
e2afb3b6 | 40 | AliStream::AliStream(): |
88cb7938 | 41 | fLastEventSerialNr(-1), |
e2afb3b6 | 42 | fLastEventNr(0), |
88cb7938 | 43 | fCurrentFileIndex(-1), |
e2afb3b6 | 44 | fEvents(0), |
45 | fMode(0), | |
88cb7938 | 46 | fFileNames(0x0), |
47 | fEventFolderName(0) | |
77843484 | 48 | { |
024a7e64 | 49 | // root requires default ctor, where no new objects can be created |
50 | // do not use this ctor, it is supplied only for root needs | |
6873edea | 51 | } |
e2afb3b6 | 52 | //_______________________________________________________________________ |
88cb7938 | 53 | |
54 | AliStream::AliStream(const char* foldername,Option_t *option): | |
e2afb3b6 | 55 | fLastEventSerialNr(-1), |
56 | fLastEventNr(0), | |
57 | fCurrentFileIndex(-1), | |
58 | fEvents(0), | |
59 | fMode(option), | |
88cb7938 | 60 | fFileNames(new TObjArray(1)), |
61 | fEventFolderName(foldername) | |
e2afb3b6 | 62 | { |
88cb7938 | 63 | // ctor |
e2afb3b6 | 64 | } |
e2afb3b6 | 65 | //_______________________________________________________________________ |
e2afb3b6 | 66 | |
024a7e64 | 67 | AliStream::AliStream(const AliStream &as): |
68 | TNamed(as), | |
69 | fLastEventSerialNr(-1), | |
70 | fLastEventNr(0), | |
71 | fCurrentFileIndex(-1), | |
72 | fEvents(0), | |
73 | fMode(0), | |
74 | fFileNames(0x0), | |
75 | fEventFolderName(" ") | |
76 | { | |
77 | // | |
78 | // Copy ctor | |
79 | // | |
80 | as.Copy(*this); | |
81 | } | |
82 | //_______________________________________________________________________ | |
83 | ||
77843484 | 84 | AliStream::~AliStream() |
85 | { | |
86 | // default dtor | |
88cb7938 | 87 | delete AliRunLoader::GetRunLoader(fEventFolderName); //clear the eventuall session |
88 | if (fFileNames) delete fFileNames; | |
77843484 | 89 | } |
e2afb3b6 | 90 | //_______________________________________________________________________ |
88cb7938 | 91 | |
024a7e64 | 92 | void AliStream::Copy(TObject &) const |
93 | { | |
94 | // | |
95 | // Copy function | |
96 | // | |
97 | Fatal("Copy","Not implemented!"); | |
98 | } | |
99 | //_______________________________________________________________________ | |
100 | ||
3466e07f | 101 | void AliStream::AddFile(const char *fileName) |
77843484 | 102 | { |
103 | // stores the name of the file | |
104 | TObjString *name = new TObjString(fileName); | |
105 | fFileNames->Add(name); | |
106 | } | |
e2afb3b6 | 107 | //_______________________________________________________________________ |
88cb7938 | 108 | |
109 | Bool_t AliStream::NextEventInStream() | |
77843484 | 110 | { |
111 | // returns kFALSE if no more events | |
112 | // returns kTRUE and the serial nr of the next event | |
113 | // fCurrentFile points to the file containing offered event | |
114 | ||
115 | // no files given: | |
116 | if (fFileNames->GetLast() < 0) return kFALSE; | |
77843484 | 117 | |
88cb7938 | 118 | AliRunLoader* currentloader = AliRunLoader::GetRunLoader(fEventFolderName); |
119 | if (currentloader == 0x0) | |
120 | { | |
121 | Info("NextEventInStream", | |
122 | "Can not get RL from folder named %s. Attempting to open next file", | |
123 | fEventFolderName.Data()); | |
124 | Int_t res = OpenNextFile(); | |
125 | if ( res == 0) return kFALSE; | |
126 | currentloader = AliRunLoader::GetRunLoader(fEventFolderName); | |
127 | } | |
033be4de | 128 | |
88cb7938 | 129 | if (fLastEventSerialNr+1 >= fEvents) |
130 | { | |
131 | if (!OpenNextFile()) return kFALSE; | |
132 | } | |
8de97894 | 133 | Info("NextEventInStream","Trying to get event %d",fLastEventSerialNr+1); |
88cb7938 | 134 | currentloader->GetEvent(++fLastEventSerialNr); |
77843484 | 135 | return kTRUE; |
136 | } | |
e2afb3b6 | 137 | //_______________________________________________________________________ |
88cb7938 | 138 | |
6873edea | 139 | void AliStream::ChangeMode(Option_t* option) |
6873edea | 140 | { |
024a7e64 | 141 | // set the mode to READ or UPDATE, reopen file with the new mode |
142 | // only change from UPDATE to READ have sense in the current scheme, | |
143 | // other changes are possible but not usefull | |
88cb7938 | 144 | |
6873edea | 145 | fMode = option; |
88cb7938 | 146 | AliRunLoader* currentloader = AliRunLoader::GetRunLoader(fEventFolderName); |
147 | if (currentloader) { | |
148 | delete currentloader; | |
6873edea | 149 | fCurrentFileIndex--; |
150 | OpenNextFile(); | |
151 | } | |
152 | } | |
e2afb3b6 | 153 | //_______________________________________________________________________ |
88cb7938 | 154 | |
77843484 | 155 | Bool_t AliStream::OpenNextFile() |
156 | { | |
024a7e64 | 157 | // |
158 | // Opens next file in the list | |
159 | // | |
fb0b99cb | 160 | if (++fCurrentFileIndex > fFileNames->GetLast()) { |
17b9c50c | 161 | Error("OpenNextFile", "No more files in the stream") ; |
fb0b99cb | 162 | return kFALSE; |
163 | } | |
164 | ||
88cb7938 | 165 | const char* filename = static_cast<TObjString*>(fFileNames->At(fCurrentFileIndex))->GetName(); |
3466e07f | 166 | |
167 | // check if the file was already opened by some other code | |
88cb7938 | 168 | TFile *f = (TFile *)(gROOT->GetListOfFiles()->FindObject(filename)); |
3466e07f | 169 | if (f) f->Close(); |
170 | ||
88cb7938 | 171 | AliRunLoader* currentloader = AliRunLoader::GetRunLoader(fEventFolderName); |
172 | ||
173 | if (currentloader) | |
174 | { | |
175 | delete currentloader; | |
176 | } | |
177 | ||
178 | currentloader = AliRunLoader::Open(filename,fEventFolderName,fMode); | |
179 | ||
6873edea | 180 | |
88cb7938 | 181 | if (currentloader == 0x0) |
182 | { | |
77843484 | 183 | // cannot open file specified on input. Do not skip it silently. |
17b9c50c | 184 | Error("OpenNextFile", "Cannot open session "); |
77843484 | 185 | return kFALSE; |
88cb7938 | 186 | } |
187 | ||
77843484 | 188 | // find nr of events in the given file |
88cb7938 | 189 | |
190 | if ( AliLoader::TestFileOption(fMode) )//tests if file is opened in read or update mode | |
191 | { | |
192 | Int_t res = currentloader->LoadHeader(); | |
193 | if (res) | |
194 | { | |
195 | Error("OpenNextFile","Problems with loading header"); | |
196 | return kFALSE; | |
197 | } | |
198 | fEvents = static_cast<Int_t>(currentloader->TreeE()->GetEntries()); | |
199 | } | |
200 | else | |
201 | { | |
202 | //if it is new, create or recreate there is no chance to find header in file | |
203 | fEvents = 0; | |
204 | } | |
205 | ||
77843484 | 206 | fLastEventSerialNr = -1; |
207 | return kTRUE; | |
208 | } | |
e2afb3b6 | 209 | //_______________________________________________________________________ |
88cb7938 | 210 | |
77843484 | 211 | Bool_t AliStream::ImportgAlice() |
212 | { | |
024a7e64 | 213 | // |
214 | // Imports gAlice object from file | |
215 | // | |
77843484 | 216 | if (fFileNames->GetLast() < 0) return kFALSE; |
88cb7938 | 217 | |
218 | AliRunLoader* currentloader = AliRunLoader::GetRunLoader(fEventFolderName); | |
219 | if (!currentloader) | |
220 | { | |
77843484 | 221 | if (!OpenNextFile()) return kFALSE; |
88cb7938 | 222 | currentloader = AliRunLoader::GetRunLoader(fEventFolderName); |
223 | } | |
224 | currentloader->LoadgAlice(); | |
225 | gAlice = currentloader->GetAliRun(); | |
77843484 | 226 | if (!gAlice) return kFALSE; |
227 | return kTRUE; | |
228 | } | |
e2afb3b6 | 229 | |
230 | //_______________________________________________________________________ | |
d0f1ee3b | 231 | TString AliStream::GetFileName(Int_t order) const |
f7ae2b32 | 232 | { |
024a7e64 | 233 | // returns name of the order-th file |
234 | // returns empty string if such file does not exist | |
235 | // first file in the input stream is 0 | |
f7ae2b32 | 236 | TString fileName(""); |
237 | if (order > fFileNames->GetLast()) return fileName; | |
238 | TObjString *fileNameStored = dynamic_cast<TObjString*>(fFileNames->At(order)); | |
239 | if (fileNameStored) fileName = fileNameStored->GetString(); | |
240 | return fileName; | |
241 | } | |
e2afb3b6 | 242 |