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1df4a03e | 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 | ||
3d1463c8 | 18 | //----------------------------------------------------------------------------- |
1df4a03e | 19 | /// \class AliMUONMCDataInterface |
20 | /// | |
21 | /// Easy to use MC data accessor | |
22 | /// | |
23 | /// \author Laurent Aphecetche, Subatech | |
e8636ba0 | 24 | /// |
25 | // Moved parts of old AliMUONDataInterface interface to AliMUONMCDataInterface | |
26 | // Artur Szostak <artursz@iafrica.com> (University of Cape Town) | |
3d1463c8 | 27 | //----------------------------------------------------------------------------- |
1df4a03e | 28 | |
29 | #include "AliMUONMCDataInterface.h" | |
e9bef706 | 30 | #include "AliMUONVDigitStore.h" |
31 | #include "AliMUONVHitStore.h" | |
e9bef706 | 32 | #include "AliMUONVTriggerStore.h" |
e8636ba0 | 33 | #include "AliMUONHit.h" |
34 | #include "AliMUONVDigit.h" | |
35 | #include "AliMUONLocalTrigger.h" | |
36 | #include "AliMUONRegionalTrigger.h" | |
37 | #include "AliMUONGlobalTrigger.h" | |
38 | ||
168e9c4d | 39 | #include "AliMpEncodePair.h" |
e8636ba0 | 40 | #include "AliMpDEManager.h" |
41 | #include "AliMpConstants.h" | |
a55f49a0 | 42 | #include "AliMpCDB.h" |
1df4a03e | 43 | |
44 | #include "AliLog.h" | |
1df4a03e | 45 | #include "AliRunLoader.h" |
aa73f8fb | 46 | #include "AliHeader.h" |
1df4a03e | 47 | #include "AliStack.h" |
aa73f8fb | 48 | #include "AliCDBManager.h" |
e9bef706 | 49 | |
1df4a03e | 50 | #include <Riostream.h> |
51 | #include <TClonesArray.h> | |
e9bef706 | 52 | #include <TList.h> |
1df4a03e | 53 | #include <TParticle.h> |
e8636ba0 | 54 | #include <TIterator.h> |
55 | #include <cstdlib> | |
56 | #include <cassert> | |
1df4a03e | 57 | |
58 | /// \cond CLASSIMP | |
59 | ClassImp(AliMUONMCDataInterface) | |
60 | /// \endcond | |
61 | ||
e9bef706 | 62 | Int_t AliMUONMCDataInterface::fgInstanceCounter(0); |
63 | ||
1df4a03e | 64 | //_____________________________________________________________________________ |
65 | AliMUONMCDataInterface::AliMUONMCDataInterface(const char* filename) : | |
66 | TObject(), | |
e9bef706 | 67 | fLoader(0x0), |
68 | fHitStore(0x0), | |
69 | fSDigitStore(0x0), | |
70 | fDigitStore(0x0), | |
71 | fTriggerStore(0x0), | |
72 | fTrackRefs(0x0), | |
73 | fCurrentEvent(-1), | |
e8636ba0 | 74 | fIsValid(kFALSE), |
75 | fCurrentIteratorType(kNoIterator), | |
76 | fCurrentIndex(-1), | |
77 | fDataX(-1), | |
78 | fDataY(-1), | |
79 | fIterator(0x0) | |
1df4a03e | 80 | { |
81 | /// ctor | |
e9bef706 | 82 | |
83 | ++fgInstanceCounter; | |
84 | ||
88c5d53f | 85 | if ( AliCDBManager::Instance() != NULL && |
86 | AliCDBManager::Instance()->GetDefaultStorage() == NULL ) { | |
87 | AliFatal("CDB default storage not defined."); | |
ae9e8f66 | 88 | } |
89 | ||
e9bef706 | 90 | Open(filename); |
a55f49a0 | 91 | |
92 | // Load mapping | |
93 | if ( ! AliMpCDB::LoadMpSegmentation() ) { | |
94 | AliFatal("Could not access mapping from OCDB !"); | |
95 | } | |
1df4a03e | 96 | } |
97 | ||
98 | //_____________________________________________________________________________ | |
99 | AliMUONMCDataInterface::~AliMUONMCDataInterface() | |
100 | { | |
101 | /// dtor | |
e9bef706 | 102 | if ( fLoader ) |
103 | { | |
104 | delete fLoader->GetRunLoader(); | |
105 | } | |
106 | --fgInstanceCounter; | |
107 | } | |
108 | ||
e8636ba0 | 109 | //_____________________________________________________________________________ |
110 | AliMUONVHitStore* | |
111 | AliMUONMCDataInterface::HitStore(Int_t event, Int_t track) | |
112 | { | |
113 | /// Return the hitStore for a given track of one event | |
114 | /// Return 0x0 if event and/or track not found | |
115 | /// Returned pointer should not be deleted | |
46df197d | 116 | /// |
117 | /// \note If a previous store has been retrieved by one of the methods of | |
118 | /// this class, but for a different event number, then those stores will | |
119 | /// be deleted and no longer valid. | |
120 | /// If you require access to the data for the earlier retrieved store, | |
121 | /// but for different events, then you should deep copy / clone the object. | |
e8636ba0 | 122 | |
123 | if (not IsValid()) return 0x0; | |
4cfe83bc | 124 | |
125 | if (event == fCurrentEvent) | |
126 | { | |
127 | if (track == fDataX and fHitStore != 0x0) // using fDataX as track number. | |
e8636ba0 | 128 | return fHitStore; |
4cfe83bc | 129 | } |
130 | else | |
131 | { | |
132 | ResetStores(); | |
133 | if ( not LoadEvent(event) ) return 0x0; | |
134 | } | |
e8636ba0 | 135 | |
136 | fLoader->LoadHits(); | |
137 | ||
138 | TTree* treeH = fLoader->TreeH(); | |
139 | if (treeH == 0x0) | |
140 | { | |
141 | AliError("Could not get treeH"); | |
142 | return 0x0; | |
143 | } | |
144 | ||
145 | fHitStore = AliMUONVHitStore::Create(*treeH); | |
146 | AliDebug(1,"Creating hitStore from treeH"); | |
147 | if ( fHitStore != 0x0 ) | |
148 | { | |
149 | fHitStore->Connect(*treeH); | |
150 | if ( treeH->GetEvent(track) == 0 ) | |
151 | { | |
152 | AliError(Form("Could not read track %d",track)); | |
153 | fHitStore->Clear(); | |
154 | return 0x0; | |
155 | } | |
156 | fDataX = track; // using fDataX as track number. | |
157 | } | |
158 | ||
159 | fLoader->UnloadHits(); | |
160 | ||
161 | return fHitStore; | |
162 | } | |
163 | ||
164 | //_____________________________________________________________________________ | |
165 | AliMUONVDigitStore* | |
166 | AliMUONMCDataInterface::SDigitStore(Int_t event) | |
167 | { | |
168 | /// Return the SDigit store for a given event. | |
169 | /// Return 0 if event not found | |
170 | /// Returned pointer should not be deleted | |
46df197d | 171 | /// |
172 | /// \note If a previous store has been retrieved by one of the methods of | |
173 | /// this class, but for a different event number, then those stores will | |
174 | /// be deleted and no longer valid. | |
175 | /// If you require access to the data for the earlier retrieved store, | |
176 | /// but for different events, then you should deep copy / clone the object. | |
e8636ba0 | 177 | |
178 | if (not IsValid()) return 0x0; | |
e8636ba0 | 179 | |
4cfe83bc | 180 | if (event == fCurrentEvent) |
181 | { | |
182 | if (fSDigitStore != 0x0) | |
183 | return fSDigitStore; | |
184 | } | |
185 | else | |
186 | { | |
187 | ResetStores(); | |
188 | if ( not LoadEvent(event) ) return 0x0; | |
189 | } | |
e8636ba0 | 190 | |
191 | fLoader->LoadSDigits(); | |
192 | ||
193 | TTree* treeS = fLoader->TreeS(); | |
194 | if (treeS == 0x0) | |
195 | { | |
196 | AliError("Could not get treeS"); | |
197 | return 0x0; | |
198 | } | |
199 | ||
200 | fSDigitStore = AliMUONVDigitStore::Create(*treeS); | |
201 | if ( fSDigitStore != 0x0 ) | |
202 | { | |
203 | fSDigitStore->Clear(); | |
204 | fSDigitStore->Connect(*treeS); | |
205 | treeS->GetEvent(0); | |
206 | } | |
207 | ||
208 | fLoader->UnloadSDigits(); | |
209 | ||
210 | return fSDigitStore; | |
211 | } | |
212 | ||
e9bef706 | 213 | //_____________________________________________________________________________ |
214 | AliMUONVDigitStore* | |
215 | AliMUONMCDataInterface::DigitStore(Int_t event) | |
216 | { | |
217 | /// Return a pointer to the digitStore for a given event (or 0 if not found) | |
218 | /// Returned pointer should not be deleted | |
46df197d | 219 | /// |
220 | /// \note If a previous store has been retrieved by one of the methods of | |
221 | /// this class, but for a different event number, then those stores will | |
222 | /// be deleted and no longer valid. | |
223 | /// If you require access to the data for the earlier retrieved store, | |
224 | /// but for different events, then you should deep copy / clone the object. | |
e9bef706 | 225 | |
e8636ba0 | 226 | if (not IsValid()) return 0x0; |
e8636ba0 | 227 | |
4cfe83bc | 228 | if (event == fCurrentEvent) |
229 | { | |
230 | if (fDigitStore != 0x0) | |
231 | return fDigitStore; | |
232 | } | |
233 | else | |
234 | { | |
235 | ResetStores(); | |
236 | if ( not LoadEvent(event) ) return 0x0; | |
237 | } | |
e9bef706 | 238 | |
239 | fLoader->LoadDigits(); | |
240 | ||
241 | TTree* treeD = fLoader->TreeD(); | |
e8636ba0 | 242 | if (treeD == 0x0) |
e9bef706 | 243 | { |
244 | AliError("Could not get treeD"); | |
245 | return 0x0; | |
246 | } | |
247 | ||
e8636ba0 | 248 | fDigitStore = AliMUONVDigitStore::Create(*treeD); |
249 | if ( fDigitStore != 0x0 ) | |
e9bef706 | 250 | { |
251 | fDigitStore->Clear(); | |
252 | fDigitStore->Connect(*treeD); | |
253 | treeD->GetEvent(0); | |
254 | } | |
255 | ||
256 | fLoader->UnloadDigits(); | |
257 | ||
258 | return fDigitStore; | |
259 | } | |
260 | ||
e8636ba0 | 261 | //_____________________________________________________________________________ |
262 | AliStack* | |
263 | AliMUONMCDataInterface::Stack(Int_t event) | |
264 | { | |
265 | /// Get the Stack (list of generated particles) for one event | |
266 | /// Returned pointer should not be deleted | |
46df197d | 267 | /// |
268 | /// \note If a previous store has been retrieved by one of the methods of | |
269 | /// this class, but for a different event number, then those stores will | |
270 | /// be deleted and no longer valid. | |
271 | /// If you require access to the data for the earlier retrieved store, | |
272 | /// but for different events, then you should deep copy / clone the object. | |
e8636ba0 | 273 | |
274 | if ( not IsValid() ) return 0x0; | |
275 | ||
276 | if (event != fCurrentEvent) | |
277 | { | |
278 | ResetStores(); | |
279 | if ( not LoadEvent(event) ) return 0x0; | |
280 | } | |
281 | ||
282 | fLoader->GetRunLoader()->LoadKinematics(); | |
283 | ||
284 | return fLoader->GetRunLoader()->Stack(); | |
285 | } | |
286 | ||
287 | //_____________________________________________________________________________ | |
288 | TClonesArray* | |
289 | AliMUONMCDataInterface::TrackRefs(Int_t event, Int_t track) | |
290 | { | |
291 | /// Get the track references for a given (generated) track of one event | |
292 | /// Returned pointer should not be deleted | |
46df197d | 293 | /// |
294 | /// \note If a previous store has been retrieved by one of the methods of | |
295 | /// this class, but for a different event number, then those stores will | |
296 | /// be deleted and no longer valid. | |
297 | /// If you require access to the data for the earlier retrieved store, | |
298 | /// but for different events, then you should deep copy / clone the object. | |
e8636ba0 | 299 | |
300 | if ( not IsValid() ) return 0x0; | |
4cfe83bc | 301 | |
302 | if (event == fCurrentEvent) | |
303 | { | |
304 | if (track == fDataX and fTrackRefs != 0x0) // using fDataX as track number. | |
305 | return fTrackRefs; | |
306 | } | |
307 | else | |
e8636ba0 | 308 | { |
309 | ResetStores(); | |
310 | if ( not LoadEvent(event) ) return 0x0; | |
311 | } | |
312 | ||
e8636ba0 | 313 | fLoader->GetRunLoader()->LoadTrackRefs(); |
314 | ||
315 | TTree* treeTR = fLoader->GetRunLoader()->TreeTR(); | |
316 | ||
317 | if ( fTrackRefs != 0x0 ) fTrackRefs->Clear("C"); | |
318 | ||
319 | if (treeTR != 0x0) | |
320 | { | |
321 | if ( treeTR->GetEvent(track) > 0 ) | |
322 | { | |
91469ad4 | 323 | TBranch* branch = treeTR->GetBranch("TrackReferences"); |
e8636ba0 | 324 | branch->SetAddress(&fTrackRefs); |
325 | branch->GetEvent(track); | |
326 | fDataX = track; // using fDataX as track number. | |
327 | } | |
328 | } | |
329 | else | |
330 | { | |
331 | AliError("Could not get TreeTR"); | |
332 | } | |
333 | ||
334 | fLoader->GetRunLoader()->UnloadTrackRefs(); | |
335 | ||
336 | return fTrackRefs; | |
337 | } | |
338 | ||
339 | //_____________________________________________________________________________ | |
340 | AliMUONVTriggerStore* | |
341 | AliMUONMCDataInterface::TriggerStore(Int_t event) | |
342 | { | |
343 | /// Return the triggerStore for a given event. | |
344 | /// Return 0x0 if event not found. | |
345 | /// Returned pointer should not be deleted. | |
46df197d | 346 | /// |
347 | /// \note If a previous store has been retrieved by one of the methods of | |
348 | /// this class, but for a different event number, then those stores will | |
349 | /// be deleted and no longer valid. | |
350 | /// If you require access to the data for the earlier retrieved store, | |
351 | /// but for different events, then you should deep copy / clone the object. | |
e8636ba0 | 352 | |
353 | if (not IsValid()) return 0x0; | |
e8636ba0 | 354 | |
4cfe83bc | 355 | if (event == fCurrentEvent) |
356 | { | |
357 | if (fTriggerStore != 0x0) | |
358 | return fTriggerStore; | |
359 | } | |
360 | else | |
361 | { | |
362 | ResetStores(); | |
363 | if ( not LoadEvent(event) ) return 0x0; | |
364 | } | |
e8636ba0 | 365 | |
366 | fLoader->LoadDigits(); | |
367 | ||
368 | TTree* treeD = fLoader->TreeD(); | |
369 | if ( treeD == 0x0 ) | |
370 | { | |
371 | AliError("Could not get treeD"); | |
372 | return 0x0; | |
373 | } | |
374 | ||
375 | fTriggerStore = AliMUONVTriggerStore::Create(*treeD); | |
376 | if ( fTriggerStore != 0x0 ) | |
377 | { | |
378 | fTriggerStore->Clear(); | |
379 | fTriggerStore->Connect(*treeD); | |
380 | treeD->GetEvent(0); | |
381 | } | |
382 | ||
383 | fLoader->UnloadDigits(); | |
384 | ||
385 | return fTriggerStore; | |
386 | } | |
387 | ||
e9bef706 | 388 | //_____________________________________________________________________________ |
389 | void | |
390 | AliMUONMCDataInterface::DumpDigits(Int_t event, Bool_t sorted) | |
391 | { | |
392 | /// Dump the digits for a given event, sorted if requested. | |
393 | DigitStore(event); | |
394 | ||
e8636ba0 | 395 | if ( fDigitStore != 0x0 ) |
e9bef706 | 396 | { |
397 | if ( sorted ) | |
398 | { | |
399 | DumpSorted(*fDigitStore); | |
400 | } | |
401 | else | |
402 | { | |
403 | fDigitStore->Print(); | |
404 | } | |
405 | } | |
1df4a03e | 406 | } |
407 | ||
408 | //_____________________________________________________________________________ | |
409 | void | |
e9bef706 | 410 | AliMUONMCDataInterface::DumpHits(Int_t event) |
1df4a03e | 411 | { |
412 | /// Dump all the hits for one event | |
413 | ||
414 | Int_t ntracks = NumberOfTracks(event); | |
415 | ||
416 | for ( Int_t i = 0; i < ntracks; ++i ) | |
417 | { | |
418 | cout << ">> Track " << i << endl; | |
e9bef706 | 419 | HitStore(event,i); |
420 | if ( fHitStore ) | |
421 | { | |
422 | fHitStore->Print("","full"); | |
423 | } | |
1df4a03e | 424 | } |
425 | } | |
426 | ||
427 | //_____________________________________________________________________________ | |
428 | void | |
e9bef706 | 429 | AliMUONMCDataInterface::DumpKine(Int_t event) |
1df4a03e | 430 | { |
431 | /// Dump all generated particles for one event | |
432 | AliStack* stack = Stack(event); | |
433 | ||
e8636ba0 | 434 | if ( stack != 0x0 ) |
1df4a03e | 435 | { |
436 | Int_t nparticles = (Int_t) stack->GetNtrack(); | |
437 | ||
438 | for (Int_t iparticle=0; iparticle<nparticles; ++iparticle) | |
439 | { | |
440 | stack->Particle(iparticle)->Print(""); | |
441 | } | |
442 | } | |
443 | else | |
444 | { | |
445 | AliError("Could not get stack"); | |
446 | } | |
447 | } | |
448 | ||
449 | //_____________________________________________________________________________ | |
450 | void | |
e9bef706 | 451 | AliMUONMCDataInterface::DumpSDigits(Int_t event, Bool_t sorted) |
452 | { | |
453 | /// Dump the SDigits for a given event, sorted if requested | |
454 | SDigitStore(event); | |
455 | ||
e8636ba0 | 456 | if ( fSDigitStore != 0x0 ) |
e9bef706 | 457 | { |
458 | if ( sorted ) | |
459 | { | |
460 | DumpSorted(*fSDigitStore); | |
461 | } | |
462 | else | |
463 | { | |
464 | fSDigitStore->Print(); | |
465 | } | |
466 | } | |
467 | } | |
468 | ||
469 | //_____________________________________________________________________________ | |
470 | void | |
471 | AliMUONMCDataInterface::DumpSorted(const AliMUONVStore& store) const | |
472 | { | |
473 | /// Dump the given store in sorted order | |
474 | ||
475 | TIter next(store.CreateIterator()); | |
476 | TObject* object; | |
477 | TList list; | |
478 | list.SetOwner(kFALSE); | |
479 | ||
480 | while ( ( object = next() ) ) | |
481 | { | |
482 | list.Add(object); | |
483 | } | |
484 | ||
485 | list.Sort(); | |
486 | ||
487 | list.Print(); | |
488 | } | |
489 | ||
490 | //_____________________________________________________________________________ | |
491 | void | |
492 | AliMUONMCDataInterface::DumpTrackRefs(Int_t event) | |
1df4a03e | 493 | { |
494 | /// Dump track references for one event | |
495 | Int_t ntrackrefs = NumberOfTrackRefs(event); | |
496 | ||
497 | for ( Int_t i = 0; i < ntrackrefs; ++i ) | |
498 | { | |
e9bef706 | 499 | TrackRefs(event,i); |
e8636ba0 | 500 | if ( fTrackRefs != 0x0 ) |
e9bef706 | 501 | { |
502 | fTrackRefs->Print("","*"); | |
503 | } | |
504 | } | |
505 | } | |
506 | ||
507 | //_____________________________________________________________________________ | |
508 | void | |
509 | AliMUONMCDataInterface::DumpTrigger(Int_t event) | |
510 | { | |
511 | /// Dump trigger for a given event (trigger is read from TreeD) | |
512 | ||
513 | TriggerStore(event); | |
514 | ||
e8636ba0 | 515 | if ( fTriggerStore != 0x0 ) |
e9bef706 | 516 | { |
517 | fTriggerStore->Print(); | |
1df4a03e | 518 | } |
519 | } | |
520 | ||
1df4a03e | 521 | //_____________________________________________________________________________ |
522 | Bool_t | |
e9bef706 | 523 | AliMUONMCDataInterface::LoadEvent(Int_t event) |
524 | { | |
525 | /// Load event if different from the current one. | |
e8636ba0 | 526 | /// Returns kFALSE on error and kTRUE if the event was loaded. |
527 | ||
528 | assert( IsValid() ); | |
529 | ||
530 | AliDebug(1,Form("Loading event %d using runLoader %p",event,fLoader->GetRunLoader())); | |
531 | if (fLoader->GetRunLoader()->GetEvent(event) == 0) | |
e9bef706 | 532 | { |
533 | fCurrentEvent = event; | |
e8636ba0 | 534 | return kTRUE; |
e9bef706 | 535 | } |
e8636ba0 | 536 | else |
537 | return kFALSE; | |
1df4a03e | 538 | } |
539 | ||
e9bef706 | 540 | |
1df4a03e | 541 | //_____________________________________________________________________________ |
542 | Int_t | |
543 | AliMUONMCDataInterface::NumberOfEvents() const | |
544 | { | |
545 | /// Number of events in the file we're connected to | |
e8636ba0 | 546 | if (not IsValid()) return -1; |
e9bef706 | 547 | return fLoader->GetRunLoader()->GetNumberOfEvents(); |
1df4a03e | 548 | } |
549 | ||
550 | //_____________________________________________________________________________ | |
551 | Int_t | |
e9bef706 | 552 | AliMUONMCDataInterface::NumberOfTracks(Int_t event) |
1df4a03e | 553 | { |
554 | /// Number of tracks in the event | |
e8636ba0 | 555 | if ( not IsValid()) return -1; |
1df4a03e | 556 | |
e8636ba0 | 557 | if (event != fCurrentEvent) |
558 | { | |
559 | ResetStores(); | |
560 | if ( not LoadEvent(event) ) return -1; | |
561 | } | |
e9bef706 | 562 | |
563 | fLoader->LoadHits(); | |
1df4a03e | 564 | |
e8636ba0 | 565 | Int_t rv(-1); |
1df4a03e | 566 | |
e9bef706 | 567 | TTree* treeH = fLoader->TreeH(); |
e8636ba0 | 568 | if (treeH != 0x0) |
1df4a03e | 569 | { |
e9bef706 | 570 | rv = static_cast<Int_t>(treeH->GetEntries()); |
1df4a03e | 571 | } |
572 | else | |
573 | { | |
574 | AliError("Could not get TreeH"); | |
575 | } | |
576 | ||
e9bef706 | 577 | fLoader->UnloadHits(); |
1df4a03e | 578 | |
579 | return rv; | |
580 | } | |
581 | ||
582 | //_____________________________________________________________________________ | |
583 | Int_t | |
e9bef706 | 584 | AliMUONMCDataInterface::NumberOfTrackRefs(Int_t event) |
1df4a03e | 585 | { |
586 | /// Number of track references in the event | |
e8636ba0 | 587 | if ( not IsValid()) return -1; |
1df4a03e | 588 | |
e8636ba0 | 589 | if (event != fCurrentEvent) |
590 | { | |
591 | ResetStores(); | |
592 | if ( not LoadEvent(event) ) return -1; | |
593 | } | |
e9bef706 | 594 | |
595 | fLoader->GetRunLoader()->LoadTrackRefs(); | |
1df4a03e | 596 | |
e8636ba0 | 597 | Int_t rv(-1); |
1df4a03e | 598 | |
e9bef706 | 599 | TTree* treeTR = fLoader->GetRunLoader()->TreeTR(); |
e8636ba0 | 600 | if (treeTR != 0x0) |
1df4a03e | 601 | { |
e9bef706 | 602 | rv = static_cast<Int_t>(treeTR->GetEntries()); |
1df4a03e | 603 | } |
604 | else | |
605 | { | |
606 | AliError("Could not get TreeTR"); | |
607 | } | |
608 | ||
e9bef706 | 609 | fLoader->GetRunLoader()->UnloadTrackRefs(); |
1df4a03e | 610 | |
611 | return rv; | |
612 | } | |
613 | ||
e9bef706 | 614 | //_____________________________________________________________________________ |
615 | void | |
616 | AliMUONMCDataInterface::Open(const char* filename) | |
617 | { | |
618 | /// Connect to a given galice.root file | |
619 | ||
e8636ba0 | 620 | ResetStores(); |
e9bef706 | 621 | |
622 | fCurrentEvent=-1; | |
623 | ||
e8636ba0 | 624 | if ( fLoader != 0x0 ) |
e9bef706 | 625 | { |
626 | delete fLoader->GetRunLoader(); | |
627 | } | |
628 | ||
629 | fLoader = 0x0; | |
630 | ||
631 | fIsValid = kTRUE; | |
632 | ||
633 | TString foldername(Form("%s-%d",ClassName(),fgInstanceCounter)); | |
634 | ||
635 | while (AliRunLoader::GetRunLoader(foldername)) | |
636 | { | |
637 | delete AliRunLoader::GetRunLoader(foldername); | |
638 | } | |
639 | ||
640 | AliRunLoader* runLoader = AliRunLoader::Open(filename,foldername); | |
e8636ba0 | 641 | if (runLoader == 0x0) |
e9bef706 | 642 | { |
643 | AliError(Form("Cannot open file %s",filename)); | |
644 | fIsValid = kFALSE; | |
645 | } | |
aa73f8fb | 646 | |
647 | // Get run number and set it to CDB manager | |
648 | runLoader->LoadHeader(); | |
649 | if ( ! runLoader->GetHeader() ) { | |
650 | AliError("Cannot load header."); | |
651 | fIsValid = kFALSE; | |
652 | } | |
653 | else { | |
654 | Int_t runNumber = runLoader->GetHeader()->GetRun(); | |
655 | AliCDBManager::Instance()->SetRun(runNumber); | |
656 | } | |
657 | runLoader->UnloadHeader(); | |
658 | ||
e9bef706 | 659 | fLoader = runLoader->GetDetectorLoader("MUON"); |
e8636ba0 | 660 | if (fLoader == 0x0) |
e9bef706 | 661 | { |
662 | AliError("Cannot get AliMUONLoader"); | |
663 | fIsValid = kFALSE; | |
664 | } | |
665 | ||
e8636ba0 | 666 | if (not IsValid()) |
e9bef706 | 667 | { |
668 | AliError(Form("Could not access %s filename. Object is unuseable",filename)); | |
669 | } | |
670 | } | |
671 | ||
672 | //_____________________________________________________________________________ | |
e8636ba0 | 673 | Bool_t AliMUONMCDataInterface::GetEvent(Int_t event) |
e9bef706 | 674 | { |
e8636ba0 | 675 | /// Loads all simulated data for the given event. |
676 | ||
677 | if (HitStore(event, 0) == 0x0) return kFALSE; | |
678 | if (SDigitStore(event) == 0x0) return kFALSE; | |
679 | if (DigitStore(event) == 0x0) return kFALSE; | |
680 | if (TriggerStore(event) == 0x0) return kFALSE; | |
681 | if (TrackRefs(event, 0) == 0x0) return kFALSE; | |
682 | return kTRUE; | |
683 | } | |
684 | ||
685 | //_____________________________________________________________________________ | |
686 | Int_t AliMUONMCDataInterface::NumberOfParticles() | |
687 | { | |
688 | /// Returns the total number of particles in the kinematics tree. | |
689 | ||
690 | AliStack* stack = Stack(fCurrentEvent); | |
691 | if ( stack == 0x0 ) return -1; | |
692 | return (Int_t) stack->GetNtrack(); | |
693 | } | |
694 | ||
695 | //_____________________________________________________________________________ | |
696 | TParticle* AliMUONMCDataInterface::Particle(Int_t index) | |
697 | { | |
698 | /// Returns the index'th particle in the kinematics tree. | |
699 | /// @param index The index number of the particle in the range [0 ... N-1] | |
700 | /// where N = NumberOfParticles() | |
701 | ||
702 | AliStack* stack = Stack(fCurrentEvent); | |
703 | if ( stack == 0x0 ) return 0x0; | |
704 | return static_cast<TParticle*>( stack->Particle(index) ); | |
705 | } | |
706 | ||
707 | //_____________________________________________________________________________ | |
708 | Int_t AliMUONMCDataInterface::NumberOfTracks() | |
709 | { | |
710 | /// Returns the number of primary tracks (from primary particles) in the current event. | |
711 | ||
712 | return NumberOfTracks(fCurrentEvent); | |
713 | } | |
714 | ||
715 | //_____________________________________________________________________________ | |
716 | Int_t AliMUONMCDataInterface::NumberOfHits(Int_t track) | |
717 | { | |
718 | /// Returns the number of hits for a given primary track/particle. | |
719 | /// @param track The track number in the range [0 .. N-1] | |
720 | /// where N = NumberOfTracks() | |
721 | ||
722 | TIterator* iter = GetIterator(kHitIterator, track); | |
723 | return CountObjects(iter); | |
724 | } | |
725 | ||
726 | //_____________________________________________________________________________ | |
727 | AliMUONHit* | |
728 | AliMUONMCDataInterface::Hit(Int_t track, Int_t index) | |
729 | { | |
730 | /// Returns a pointer to the index'th hit object. | |
731 | /// @param track The track number in the range [0 .. N-1] | |
732 | /// where N = NumberOfTracks() | |
733 | /// @param index The index number of the hit in the range [0 ... M-1] | |
734 | /// where M = NumberOfHits(track) | |
735 | ||
736 | TIterator* iter = GetIterator(kHitIterator, track); | |
737 | return static_cast<AliMUONHit*>( FetchObject(iter, index) ); | |
738 | } | |
739 | ||
740 | //_____________________________________________________________________________ | |
741 | Int_t AliMUONMCDataInterface::NumberOfSDigits(Int_t detElemId) | |
742 | { | |
743 | /// Returns the number of summable digits to be found on a given detector element. | |
744 | /// @param detElemId The detector element ID number to search on. | |
745 | ||
746 | TIterator* iter = GetIterator(kSDigitIteratorByDetectorElement, detElemId); | |
747 | return CountObjects(iter); | |
748 | } | |
749 | ||
750 | //_____________________________________________________________________________ | |
751 | AliMUONVDigit* AliMUONMCDataInterface::SDigit(Int_t detElemId, Int_t index) | |
752 | { | |
753 | /// Returns the a pointer to the index'th summable digit on the specified detector element. | |
754 | /// @param detElemId The detector element ID number to search on. | |
755 | /// @param index The index number of the digit to fetch in the range [0 .. N-1], | |
756 | /// where N = NumberOfDigits(detElemId) | |
757 | ||
758 | TIterator* iter = GetIterator(kSDigitIteratorByDetectorElement, detElemId); | |
759 | return static_cast<AliMUONVDigit*>( FetchObject(iter, index) ); | |
760 | } | |
761 | ||
762 | //_____________________________________________________________________________ | |
763 | Int_t AliMUONMCDataInterface::NumberOfSDigits(Int_t chamber, Int_t cathode) | |
764 | { | |
765 | /// Returns the number of summable digits to be found on a specific chamber and cathode. | |
766 | /// @param chamber The chamber number in the range [0 .. 13]. | |
767 | /// @param cathode The cathode in the range [0 .. 1], where 0 is the bending and | |
768 | /// 1 is the non-bending plane. | |
769 | ||
770 | TIterator* iter = GetIterator(kSDigitIteratorByChamberAndCathode, chamber, cathode); | |
771 | return CountObjects(iter); | |
772 | } | |
773 | ||
774 | //_____________________________________________________________________________ | |
775 | AliMUONVDigit* AliMUONMCDataInterface::SDigit(Int_t chamber, Int_t cathode, Int_t index) | |
776 | { | |
777 | /// Returns the a pointer to the index'th summable digit on the specified chamber and cathode. | |
778 | /// @param chamber The chamber number in the range [0 .. 13]. | |
779 | /// @param cathode The cathode in the range [0 .. 1], where 0 is the bending and | |
780 | /// 1 is the non-bending plane. | |
781 | /// @param index The index number of the digit to fetch in the range [0 .. N-1], | |
782 | /// where N = NumberOfDigits(chamber, cathode) | |
783 | ||
784 | TIterator* iter = GetIterator(kSDigitIteratorByChamberAndCathode, chamber, cathode); | |
785 | return static_cast<AliMUONVDigit*>( FetchObject(iter, index) ); | |
786 | } | |
787 | ||
788 | //_____________________________________________________________________________ | |
789 | Int_t AliMUONMCDataInterface::NumberOfDigits(Int_t detElemId) | |
790 | { | |
791 | /// Returns the number of simulated digits to be found on a given detector element. | |
792 | /// @param detElemId The detector element ID number to search on. | |
793 | ||
794 | TIterator* iter = GetIterator(kDigitIteratorByDetectorElement, detElemId); | |
795 | return CountObjects(iter); | |
796 | } | |
797 | ||
798 | //_____________________________________________________________________________ | |
799 | AliMUONVDigit* AliMUONMCDataInterface::Digit(Int_t detElemId, Int_t index) | |
800 | { | |
801 | /// Returns the a pointer to the index'th simulated digit on the specified detector element. | |
802 | /// @param detElemId The detector element ID number to search on. | |
803 | /// @param index The index number of the digit to fetch in the range [0 .. N-1], | |
804 | /// where N = NumberOfDigits(detElemId) | |
805 | ||
806 | TIterator* iter = GetIterator(kDigitIteratorByDetectorElement, detElemId); | |
807 | return static_cast<AliMUONVDigit*>( FetchObject(iter, index) ); | |
808 | } | |
809 | ||
810 | //_____________________________________________________________________________ | |
811 | Int_t AliMUONMCDataInterface::NumberOfDigits(Int_t chamber, Int_t cathode) | |
812 | { | |
813 | /// Returns the number of simulated digits to be found on a specific chamber and cathode. | |
814 | /// @param chamber The chamber number in the range [0 .. 13]. | |
815 | /// @param cathode The cathode in the range [0 .. 1], where 0 is the bending and | |
816 | /// 1 is the non-bending plane. | |
817 | ||
818 | TIterator* iter = GetIterator(kDigitIteratorByChamberAndCathode, chamber, cathode); | |
819 | return CountObjects(iter); | |
820 | } | |
821 | ||
822 | //_____________________________________________________________________________ | |
823 | AliMUONVDigit* AliMUONMCDataInterface::Digit(Int_t chamber, Int_t cathode, Int_t index) | |
824 | { | |
825 | /// Returns the a pointer to the index'th simulated digit on the specified chamber and cathode. | |
826 | /// @param chamber The chamber number in the range [0 .. 13]. | |
827 | /// @param cathode The cathode in the range [0 .. 1], where 0 is the bending and | |
828 | /// 1 is the non-bending plane. | |
829 | /// @param index The index number of the digit to fetch in the range [0 .. N-1], | |
830 | /// where N = NumberOfDigits(chamber, cathode) | |
831 | ||
832 | TIterator* iter = GetIterator(kDigitIteratorByChamberAndCathode, chamber, cathode); | |
833 | return static_cast<AliMUONVDigit*>( FetchObject(iter, index) ); | |
834 | } | |
835 | ||
836 | //_____________________________________________________________________________ | |
837 | Int_t AliMUONMCDataInterface::NumberOfLocalTriggers() | |
838 | { | |
839 | /// Returns the number of simulated local trigger objects. | |
840 | ||
841 | TIterator* iter = GetIterator(kLocalTriggerIterator); | |
842 | return CountObjects(iter); | |
843 | } | |
844 | ||
845 | //_____________________________________________________________________________ | |
846 | AliMUONLocalTrigger* AliMUONMCDataInterface::LocalTrigger(Int_t index) | |
847 | { | |
848 | /// Returns a pointer to the index'th simulated local trigger object. | |
849 | /// @param index The index number of the local trigger object to fetch in the range [0 .. N-1], | |
850 | /// where N = NumberOfLocalTriggers() | |
851 | ||
852 | TIterator* iter = GetIterator(kLocalTriggerIterator); | |
853 | return static_cast<AliMUONLocalTrigger*>( FetchObject(iter, index) ); | |
854 | } | |
855 | ||
856 | //_____________________________________________________________________________ | |
857 | Int_t AliMUONMCDataInterface::NumberOfRegionalTriggers() | |
858 | { | |
859 | /// Returns the number of simulated regional trigger objects. | |
860 | ||
861 | TIterator* iter = GetIterator(kRegionalTriggerIterator); | |
862 | return CountObjects(iter); | |
863 | } | |
864 | ||
865 | //_____________________________________________________________________________ | |
866 | AliMUONRegionalTrigger* AliMUONMCDataInterface::RegionalTrigger(Int_t index) | |
867 | { | |
868 | /// Returns a pointer to the index'th simulated regional trigger object. | |
869 | /// @param index The index number of the regional trigger object to fetch in the range [0 .. N-1], | |
870 | /// where N = NumberOfRegionalTriggers() | |
871 | ||
872 | TIterator* iter = GetIterator(kRegionalTriggerIterator); | |
873 | return static_cast<AliMUONRegionalTrigger*>( FetchObject(iter, index) ); | |
874 | } | |
875 | ||
876 | //_____________________________________________________________________________ | |
877 | AliMUONGlobalTrigger* AliMUONMCDataInterface::GlobalTrigger() | |
878 | { | |
879 | /// Returns a pointer to the simulated global trigger object for the event. | |
880 | ||
881 | AliMUONVTriggerStore* store = TriggerStore(fCurrentEvent); | |
882 | if (store == 0x0) return 0x0; | |
883 | return store->Global(); | |
884 | } | |
885 | ||
886 | //_____________________________________________________________________________ | |
887 | Int_t AliMUONMCDataInterface::NumberOfTrackRefs() | |
888 | { | |
889 | /// Number of track references in the currently selected event. | |
890 | ||
891 | return NumberOfTrackRefs(fCurrentEvent); | |
892 | } | |
893 | ||
894 | //_____________________________________________________________________________ | |
895 | TClonesArray* AliMUONMCDataInterface::TrackRefs(Int_t track) | |
896 | { | |
897 | /// Returns the track references for a given track in the current event. | |
898 | /// @param track The track to returns track references for. In the range [0 .. N-1] | |
899 | /// where N = NumberOfTrackRefs() | |
900 | ||
901 | return TrackRefs(fCurrentEvent, track); | |
902 | } | |
903 | ||
904 | //_____________________________________________________________________________ | |
905 | void AliMUONMCDataInterface::ResetStores() | |
906 | { | |
907 | /// Deletes all the store objects that have been created and resets the pointers to 0x0. | |
908 | /// The temporary iterator object is automatically reset. See ResetIterator for more details. | |
909 | ||
910 | ResetIterator(); | |
911 | if (fHitStore != 0x0) | |
e9bef706 | 912 | { |
e8636ba0 | 913 | delete fHitStore; |
914 | fHitStore = 0x0; | |
e9bef706 | 915 | } |
e8636ba0 | 916 | if (fSDigitStore != 0x0) |
917 | { | |
918 | delete fSDigitStore; | |
919 | fSDigitStore = 0x0; | |
920 | } | |
921 | if (fDigitStore != 0x0) | |
922 | { | |
923 | delete fDigitStore; | |
924 | fDigitStore = 0x0; | |
925 | } | |
926 | if (fTrackRefs != 0x0) | |
e9bef706 | 927 | { |
e8636ba0 | 928 | delete fTrackRefs; |
929 | fTrackRefs = 0x0; | |
e9bef706 | 930 | } |
e8636ba0 | 931 | if (fTriggerStore != 0x0) |
932 | { | |
933 | delete fTriggerStore; | |
934 | fTriggerStore = 0x0; | |
935 | } | |
936 | } | |
937 | ||
938 | //_____________________________________________________________________________ | |
939 | TIterator* AliMUONMCDataInterface::GetIterator(IteratorType type, Int_t x, Int_t y) | |
940 | { | |
941 | /// Creates an appropriate iterator object and returns it. | |
942 | /// If the iterator has already been created then that one is returned otherwise | |
943 | /// a new object is created. | |
944 | /// Depending on the value of 'type' the semantics of parameters x and y can change. | |
945 | /// @param type The type of iterator to create. | |
946 | /// @param x This is the detector element ID if type equals kDigitIteratorByDetectorElement | |
947 | /// or kSDigitIteratorByDetectorElement. | |
948 | /// If type equals kDigitIteratorByChamberAndCathode or | |
949 | /// kSDigitIteratorByChamberAndCathode then this is the chamber number. | |
950 | /// For type == kHitIterator the parameter x is the track number. | |
951 | /// In all other cases this parameter is ignored. | |
952 | /// @param y If type equals kDigitIteratorByChamberAndCathode or | |
953 | /// kSDigitIteratorByChamberAndCathode then this parameter is the cathode | |
954 | /// number. In all other cases this parameter is ignored. | |
955 | ||
956 | if (type == fCurrentIteratorType and fDataX == x and fDataY == y) | |
957 | return fIterator; | |
e9bef706 | 958 | |
e8636ba0 | 959 | if (fCurrentEvent == -1) |
e9bef706 | 960 | { |
e8636ba0 | 961 | AliError("No event was selected. Try first using GetEvent()."); |
962 | return 0x0; | |
e9bef706 | 963 | } |
964 | ||
e8636ba0 | 965 | ResetIterator(); |
e9bef706 | 966 | |
e8636ba0 | 967 | switch (type) |
968 | { | |
969 | case kHitIterator: | |
970 | { | |
971 | Int_t track = x; | |
972 | AliMUONVHitStore* store = HitStore(fCurrentEvent, track); | |
973 | if (store == 0x0) return 0x0; | |
974 | fIterator = store->CreateIterator(); | |
975 | if (fIterator == 0x0) return 0x0; | |
976 | fCurrentIteratorType = kHitIterator; | |
977 | return fIterator; | |
978 | } | |
979 | ||
980 | case kSDigitIteratorByDetectorElement: | |
981 | { | |
982 | Int_t detElem = x; | |
983 | AliMUONVDigitStore* store = SDigitStore(fCurrentEvent); | |
984 | if (store == 0x0) return 0x0; | |
e8636ba0 | 985 | fIterator = store->CreateIterator(detElem, detElem, 2); |
986 | if (fIterator == 0x0) return 0x0; | |
987 | fCurrentIteratorType = kSDigitIteratorByDetectorElement; | |
988 | fDataX = detElem; | |
989 | return fIterator; | |
990 | } | |
991 | ||
992 | case kSDigitIteratorByChamberAndCathode: | |
993 | { | |
994 | Int_t chamber = x; | |
995 | Int_t cathode = y; | |
996 | if (chamber < 0 or AliMpConstants::NofChambers() <= chamber) | |
997 | { | |
998 | AliError(Form( | |
999 | "Must have give a chamber value in the range [0..%d], but got a value of: %d", | |
1000 | AliMpConstants::NofChambers() - 1, | |
1001 | chamber | |
1002 | )); | |
1003 | return 0x0; | |
1004 | } | |
1005 | if (cathode < 0 or 1 < cathode) | |
1006 | { | |
1007 | AliError(Form("Must have give a cathode value in the range [0..1], but got a value of: %d", cathode)); | |
1008 | return 0x0; | |
1009 | } | |
1010 | ||
1011 | AliMUONVDigitStore* store = SDigitStore(fCurrentEvent); | |
1012 | if (store == 0x0) return 0x0; | |
168e9c4d | 1013 | MpPair_t pair = AliMpDEManager::GetDetElemIdRange(chamber); |
1014 | fIterator = store->CreateIterator(AliMp::PairFirst(pair), AliMp::PairSecond(pair), cathode); | |
e8636ba0 | 1015 | if (fIterator == 0x0) return 0x0; |
1016 | fCurrentIteratorType = kSDigitIteratorByChamberAndCathode; | |
1017 | fDataX = chamber; | |
1018 | fDataY = cathode; | |
1019 | return fIterator; | |
1020 | } | |
1021 | ||
1022 | case kDigitIteratorByDetectorElement: | |
1023 | { | |
1024 | Int_t detElem = x; | |
1025 | AliMUONVDigitStore* store = DigitStore(fCurrentEvent); | |
1026 | if (store == 0x0) return 0x0; | |
e8636ba0 | 1027 | fIterator = store->CreateIterator(detElem, detElem, 2); |
1028 | if (fIterator == 0x0) return 0x0; | |
1029 | fCurrentIteratorType = kDigitIteratorByDetectorElement; | |
1030 | fDataX = detElem; | |
1031 | return fIterator; | |
1032 | } | |
1033 | ||
1034 | case kDigitIteratorByChamberAndCathode: | |
1035 | { | |
1036 | Int_t chamber = x; | |
1037 | Int_t cathode = y; | |
1038 | if (chamber < 0 or AliMpConstants::NofChambers() <= chamber) | |
1039 | { | |
1040 | AliError(Form( | |
1041 | "Must have give a chamber value in the range [0..%d], but got a value of: %d", | |
1042 | AliMpConstants::NofChambers() - 1, | |
1043 | chamber | |
1044 | )); | |
1045 | return 0x0; | |
1046 | } | |
1047 | if (cathode < 0 or 1 < cathode) | |
1048 | { | |
1049 | AliError(Form("Must have give a cathode value in the range [0..1], but got a value of: %d", cathode)); | |
1050 | return 0x0; | |
1051 | } | |
1052 | ||
1053 | AliMUONVDigitStore* store = DigitStore(fCurrentEvent); | |
1054 | if (store == 0x0) return 0x0; | |
168e9c4d | 1055 | MpPair_t pair = AliMpDEManager::GetDetElemIdRange(chamber); |
1056 | fIterator = store->CreateIterator(AliMp::PairFirst(pair), AliMp::PairSecond(pair), cathode); | |
e8636ba0 | 1057 | if (fIterator == 0x0) return 0x0; |
1058 | fCurrentIteratorType = kDigitIteratorByChamberAndCathode; | |
1059 | fDataX = chamber; | |
1060 | fDataY = cathode; | |
1061 | return fIterator; | |
1062 | } | |
1063 | ||
1064 | case kLocalTriggerIterator: | |
1065 | { | |
1066 | AliMUONVTriggerStore* store = TriggerStore(fCurrentEvent); | |
1067 | if (store == 0x0) return 0x0; | |
1068 | fIterator = store->CreateLocalIterator(); | |
1069 | if (fIterator == 0x0) return 0x0; | |
1070 | fCurrentIteratorType = kLocalTriggerIterator; | |
1071 | return fIterator; | |
1072 | } | |
1073 | ||
1074 | case kRegionalTriggerIterator: | |
1075 | { | |
1076 | AliMUONVTriggerStore* store = TriggerStore(fCurrentEvent); | |
1077 | if (store == 0x0) return 0x0; | |
1078 | fIterator = store->CreateRegionalIterator(); | |
1079 | if (fIterator == 0x0) return 0x0; | |
1080 | fCurrentIteratorType = kRegionalTriggerIterator; | |
1081 | return fIterator; | |
1082 | } | |
1083 | ||
1084 | default: | |
1085 | return 0x0; | |
1086 | } | |
e9bef706 | 1087 | } |
1088 | ||
1df4a03e | 1089 | //_____________________________________________________________________________ |
e8636ba0 | 1090 | void AliMUONMCDataInterface::ResetIterator() |
1df4a03e | 1091 | { |
e8636ba0 | 1092 | /// The temporary iterator object is deleted if it exists and the pointer reset to 0x0. |
1093 | /// The iterator type and temporary data indicating the state of the iterator are | |
1094 | /// also reset. | |
1df4a03e | 1095 | |
e8636ba0 | 1096 | if (fIterator != 0x0) delete fIterator; |
1097 | fCurrentIteratorType = kNoIterator; | |
1098 | fCurrentIndex = fDataX = fDataY = -1; | |
1099 | fIterator = 0x0; | |
1df4a03e | 1100 | } |
1101 | ||
1102 | //_____________________________________________________________________________ | |
e8636ba0 | 1103 | Int_t AliMUONMCDataInterface::CountObjects(TIterator* iter) |
1df4a03e | 1104 | { |
e8636ba0 | 1105 | /// Counts the number of objects in the iterator and resets it. |
1106 | /// @return The number of objects in 'iter'. | |
e9bef706 | 1107 | |
e8636ba0 | 1108 | if (iter == 0x0) return -1; |
1109 | Int_t count = 0; | |
1110 | iter->Reset(); | |
1111 | while ( iter->Next() != 0x0 ) count++; | |
1112 | iter->Reset(); | |
1113 | fCurrentIndex = -1; | |
1114 | return count; | |
e9bef706 | 1115 | } |
1116 | ||
1117 | //_____________________________________________________________________________ | |
e8636ba0 | 1118 | TObject* AliMUONMCDataInterface::FetchObject(TIterator* iter, Int_t index) |
e9bef706 | 1119 | { |
e8636ba0 | 1120 | /// Fetches the index'th object from the iterator counting the first object |
1121 | /// returned by iterator after it is reset as index == 0. The next object | |
1122 | /// has index == 1 and so on where the last object returned by the iterator | |
1123 | /// has index == N-1 where N = CountObjects(iter) | |
1124 | /// This method will only reset the iterator if index is smaller than | |
1125 | /// fCurrentIndex, which is used to track the iteration progress and is | |
1126 | /// updated when a new object if returned by this method. | |
1127 | /// @param iter The iterator to fetch an object from. | |
1128 | /// @param index The index number of the object to fetch in the range [0 .. N-1] | |
1129 | /// where N = CountObjects(iter) | |
1130 | ||
1131 | if (index < 0) | |
e9bef706 | 1132 | { |
e8636ba0 | 1133 | AliError(Form("Index is out of bounds. Got a value of %d.", index)); |
e9bef706 | 1134 | return 0x0; |
1135 | } | |
e8636ba0 | 1136 | |
1137 | if (iter == 0x0) return 0x0; | |
1138 | if (index <= fCurrentIndex) | |
e9bef706 | 1139 | { |
e8636ba0 | 1140 | iter->Reset(); |
1141 | fCurrentIndex = -1; | |
e9bef706 | 1142 | } |
1143 | ||
e8636ba0 | 1144 | TObject* object = 0x0; |
1145 | while (fCurrentIndex < index) | |
e9bef706 | 1146 | { |
e8636ba0 | 1147 | object = iter->Next(); |
1148 | if (object == 0x0) | |
1149 | { | |
1150 | AliError(Form("Index is out of bounds. Got a value of %d.", index)); | |
1151 | iter->Reset(); | |
1152 | fCurrentIndex = -1; | |
1153 | return 0x0; | |
1154 | } | |
1155 | fCurrentIndex++; | |
e9bef706 | 1156 | } |
e8636ba0 | 1157 | return object; |
1df4a03e | 1158 | } |