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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 | ||
88cb7938 | 16 | /* |
17 | $Log$ | |
18 | Revision 1.4.4.4 2002/12/11 10:00:34 hristov | |
19 | Merging with v3-09-04 (P.Skowronski) | |
77843484 | 20 | |
88cb7938 | 21 | Revision 1.4.4.3 2002/11/22 14:19:50 hristov |
22 | Merging NewIO-01 with v3-09-04 (part one) (P.Skowronski) | |
23 | ||
24 | Revision 1.4.4.2 2002/06/18 10:18:32 hristov | |
25 | Important update (P.Skowronski) | |
26 | ||
27 | Revision 1.4.4.1 2002/05/31 09:37:59 hristov | |
28 | First set of changes done by Piotr | |
29 | ||
30 | Revision 1.5 2002/04/09 13:38:47 jchudoba | |
31 | Add const to the filename argument | |
32 | ||
33 | Revision 1.4 2001/12/03 07:10:13 jchudoba | |
34 | Default ctor cannot create new objects, create dummy default ctor which leaves object in not well defined state - to be used only by root for I/O | |
35 | ||
36 | Revision 1.3 2001/10/15 17:31:56 jchudoba | |
37 | Bug correction | |
38 | ||
39 | Revision 1.2 2001/10/04 15:58:52 jchudoba | |
40 | Option to open the stream in READ or UPDATE mode | |
41 | ||
42 | Revision 1.1 2001/09/19 06:20:50 jchudoba | |
43 | Class to manage input filenames, used by AliRunDigitizer | |
44 | ||
45 | */ | |
46 | ||
47 | //////////////////////////////////////////////////////////////////////// | |
48 | // | |
77843484 | 49 | // AliStream.cxx |
88cb7938 | 50 | // |
77843484 | 51 | // - store file names associated with a given stream |
52 | // - open and close files | |
53 | // - return serial event number of the next event in the stream | |
54 | // and the TFile pointer for a proper file | |
88cb7938 | 55 | // |
56 | //////////////////////////////////////////////////////////////////////// | |
77843484 | 57 | |
b16a1b1e | 58 | #include <Riostream.h> |
77843484 | 59 | |
e2afb3b6 | 60 | #include "TTree.h" |
88cb7938 | 61 | #include "TROOT.h" |
77843484 | 62 | |
e2afb3b6 | 63 | #include "AliStream.h" |
88cb7938 | 64 | #include "AliRun.h" |
65 | ||
66 | #include "TObjString.h" | |
67 | #include "TArrayI.h" | |
68 | #include "TClonesArray.h" | |
69 | #include "TFile.h" | |
70 | #include "AliLoader.h" | |
77843484 | 71 | |
72 | ClassImp(AliStream) | |
73 | ||
e2afb3b6 | 74 | AliStream::AliStream(): |
88cb7938 | 75 | fLastEventSerialNr(-1), |
e2afb3b6 | 76 | fLastEventNr(0), |
88cb7938 | 77 | fCurrentFileIndex(-1), |
e2afb3b6 | 78 | fEvents(0), |
79 | fMode(0), | |
88cb7938 | 80 | fFileNames(0x0), |
81 | fEventFolderName(0) | |
77843484 | 82 | { |
88cb7938 | 83 | // root requires default ctor, where no new objects can be created |
84 | // do not use this ctor, it is supplied only for root needs | |
6873edea | 85 | } |
e2afb3b6 | 86 | //_______________________________________________________________________ |
88cb7938 | 87 | |
88 | AliStream::AliStream(const char* foldername,Option_t *option): | |
e2afb3b6 | 89 | fLastEventSerialNr(-1), |
90 | fLastEventNr(0), | |
91 | fCurrentFileIndex(-1), | |
92 | fEvents(0), | |
93 | fMode(option), | |
88cb7938 | 94 | fFileNames(new TObjArray(1)), |
95 | fEventFolderName(foldername) | |
e2afb3b6 | 96 | { |
88cb7938 | 97 | // ctor |
e2afb3b6 | 98 | } |
e2afb3b6 | 99 | //_______________________________________________________________________ |
e2afb3b6 | 100 | |
77843484 | 101 | AliStream::~AliStream() |
102 | { | |
103 | // default dtor | |
88cb7938 | 104 | delete AliRunLoader::GetRunLoader(fEventFolderName); //clear the eventuall session |
105 | if (fFileNames) delete fFileNames; | |
77843484 | 106 | } |
e2afb3b6 | 107 | //_______________________________________________________________________ |
88cb7938 | 108 | |
3466e07f | 109 | void AliStream::AddFile(const char *fileName) |
77843484 | 110 | { |
111 | // stores the name of the file | |
112 | TObjString *name = new TObjString(fileName); | |
113 | fFileNames->Add(name); | |
114 | } | |
e2afb3b6 | 115 | //_______________________________________________________________________ |
88cb7938 | 116 | |
117 | Bool_t AliStream::NextEventInStream() | |
77843484 | 118 | { |
119 | // returns kFALSE if no more events | |
120 | // returns kTRUE and the serial nr of the next event | |
121 | // fCurrentFile points to the file containing offered event | |
122 | ||
123 | // no files given: | |
124 | if (fFileNames->GetLast() < 0) return kFALSE; | |
77843484 | 125 | |
88cb7938 | 126 | AliRunLoader* currentloader = AliRunLoader::GetRunLoader(fEventFolderName); |
127 | if (currentloader == 0x0) | |
128 | { | |
129 | Info("NextEventInStream", | |
130 | "Can not get RL from folder named %s. Attempting to open next file", | |
131 | fEventFolderName.Data()); | |
132 | Int_t res = OpenNextFile(); | |
133 | if ( res == 0) return kFALSE; | |
134 | currentloader = AliRunLoader::GetRunLoader(fEventFolderName); | |
135 | } | |
033be4de | 136 | |
88cb7938 | 137 | if (fLastEventSerialNr+1 >= fEvents) |
138 | { | |
139 | if (!OpenNextFile()) return kFALSE; | |
140 | } | |
141 | Info("NextEventInStream","Trying to get event ",fLastEventSerialNr+1); | |
142 | currentloader->GetEvent(++fLastEventSerialNr); | |
77843484 | 143 | return kTRUE; |
144 | } | |
e2afb3b6 | 145 | //_______________________________________________________________________ |
88cb7938 | 146 | |
6873edea | 147 | void AliStream::ChangeMode(Option_t* option) |
88cb7938 | 148 | // set the mode to READ or UPDATE, reopen file with the new mode |
149 | // only change from UPDATE to READ have sense in the current scheme, | |
150 | // other changes are possible but not usefull | |
6873edea | 151 | { |
88cb7938 | 152 | |
6873edea | 153 | fMode = option; |
88cb7938 | 154 | AliRunLoader* currentloader = AliRunLoader::GetRunLoader(fEventFolderName); |
155 | if (currentloader) { | |
156 | delete currentloader; | |
6873edea | 157 | fCurrentFileIndex--; |
158 | OpenNextFile(); | |
159 | } | |
160 | } | |
e2afb3b6 | 161 | //_______________________________________________________________________ |
88cb7938 | 162 | |
77843484 | 163 | Bool_t AliStream::OpenNextFile() |
164 | { | |
fb0b99cb | 165 | if (++fCurrentFileIndex > fFileNames->GetLast()) { |
166 | cerr<<"No more files in the stream"<<endl; | |
167 | return kFALSE; | |
168 | } | |
169 | ||
88cb7938 | 170 | const char* filename = static_cast<TObjString*>(fFileNames->At(fCurrentFileIndex))->GetName(); |
3466e07f | 171 | |
172 | // check if the file was already opened by some other code | |
88cb7938 | 173 | TFile *f = (TFile *)(gROOT->GetListOfFiles()->FindObject(filename)); |
3466e07f | 174 | if (f) f->Close(); |
175 | ||
88cb7938 | 176 | AliRunLoader* currentloader = AliRunLoader::GetRunLoader(fEventFolderName); |
177 | ||
178 | if (currentloader) | |
179 | { | |
180 | delete currentloader; | |
181 | } | |
182 | ||
183 | currentloader = AliRunLoader::Open(filename,fEventFolderName,fMode); | |
184 | ||
6873edea | 185 | |
88cb7938 | 186 | if (currentloader == 0x0) |
187 | { | |
77843484 | 188 | // cannot open file specified on input. Do not skip it silently. |
88cb7938 | 189 | cerr<<"Cannot open session "<<filename<<endl; |
77843484 | 190 | return kFALSE; |
88cb7938 | 191 | } |
192 | ||
77843484 | 193 | // find nr of events in the given file |
88cb7938 | 194 | |
195 | if ( AliLoader::TestFileOption(fMode) )//tests if file is opened in read or update mode | |
196 | { | |
197 | Int_t res = currentloader->LoadHeader(); | |
198 | if (res) | |
199 | { | |
200 | Error("OpenNextFile","Problems with loading header"); | |
201 | return kFALSE; | |
202 | } | |
203 | fEvents = static_cast<Int_t>(currentloader->TreeE()->GetEntries()); | |
204 | } | |
205 | else | |
206 | { | |
207 | //if it is new, create or recreate there is no chance to find header in file | |
208 | fEvents = 0; | |
209 | } | |
210 | ||
77843484 | 211 | fLastEventSerialNr = -1; |
212 | return kTRUE; | |
213 | } | |
e2afb3b6 | 214 | //_______________________________________________________________________ |
88cb7938 | 215 | |
77843484 | 216 | Bool_t AliStream::ImportgAlice() |
217 | { | |
218 | if (fFileNames->GetLast() < 0) return kFALSE; | |
88cb7938 | 219 | |
220 | AliRunLoader* currentloader = AliRunLoader::GetRunLoader(fEventFolderName); | |
221 | if (!currentloader) | |
222 | { | |
77843484 | 223 | if (!OpenNextFile()) return kFALSE; |
88cb7938 | 224 | currentloader = AliRunLoader::GetRunLoader(fEventFolderName); |
225 | } | |
226 | currentloader->LoadgAlice(); | |
227 | gAlice = currentloader->GetAliRun(); | |
77843484 | 228 | if (!gAlice) return kFALSE; |
229 | return kTRUE; | |
230 | } | |
e2afb3b6 | 231 | |
232 | //_______________________________________________________________________ | |
f7ae2b32 | 233 | TString AliStream::GetFileName(const Int_t order) const |
88cb7938 | 234 | // returns name of the order-th file |
235 | // returns empty string if such file does not exist | |
236 | // first file in the input stream is 0 | |
f7ae2b32 | 237 | { |
238 | TString fileName(""); | |
239 | if (order > fFileNames->GetLast()) return fileName; | |
240 | TObjString *fileNameStored = dynamic_cast<TObjString*>(fFileNames->At(order)); | |
241 | if (fileNameStored) fileName = fileNameStored->GetString(); | |
242 | return fileName; | |
243 | } | |
e2afb3b6 | 244 |