Renamed
[u/mrichter/AliRoot.git] / ANALYSIS / AliAnalysisTaskSE.cxx
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 #include <TROOT.h>
19 #include <TSystem.h>
20 #include <TInterpreter.h>
21 #include <TChain.h>
22 #include <TFile.h>
23 #include <TList.h>
24
25 #include "AliAnalysisTaskSE.h"
26 #include "AliAnalysisManager.h"
27 #include "AliAnalysisCuts.h"
28 #include "AliAnalysisDataSlot.h"
29 #include "AliAnalysisDataContainer.h"
30
31 #include "AliESDEvent.h"
32 #include "AliESDfriend.h"
33 #include "AliESD.h"
34 #include "AliAODEvent.h"
35 #include "AliAODHeader.h"
36 #include "AliAODTracklets.h"
37 #include "AliAODCaloCells.h"
38 #include "AliAODMCParticle.h"
39 #include "AliVEvent.h"
40 #include "AliAODHandler.h"
41 #include "AliAODInputHandler.h"
42 #include "AliMCEventHandler.h"
43 #include "AliInputEventHandler.h"
44 #include "AliMultiInputEventHandler.h"
45 #include "AliESDInputHandler.h"
46 #include "AliMCEvent.h"
47 #include "AliStack.h"
48 #include "AliLog.h"
49 #include "AliAODDimuon.h"
50
51
52 ClassImp(AliAnalysisTaskSE)
53
54 ////////////////////////////////////////////////////////////////////////
55 AliAODHeader*    AliAnalysisTaskSE::fgAODHeader         = NULL;
56 TClonesArray*    AliAnalysisTaskSE::fgAODTracks         = NULL;
57 TClonesArray*    AliAnalysisTaskSE::fgAODVertices       = NULL;
58 TClonesArray*    AliAnalysisTaskSE::fgAODV0s            = NULL;
59 TClonesArray*    AliAnalysisTaskSE::fgAODPMDClusters    = NULL;
60 TClonesArray*    AliAnalysisTaskSE::fgAODJets           = NULL;
61 TClonesArray*    AliAnalysisTaskSE::fgAODFMDClusters    = NULL;
62 TClonesArray*    AliAnalysisTaskSE::fgAODCaloClusters   = NULL;
63 TClonesArray*    AliAnalysisTaskSE::fgAODMCParticles    = NULL;
64 AliAODTracklets* AliAnalysisTaskSE::fgAODTracklets      = NULL;
65 AliAODCaloCells* AliAnalysisTaskSE::fgAODEmcalCells     = NULL;
66 AliAODCaloCells* AliAnalysisTaskSE::fgAODPhosCells      = NULL;
67 TClonesArray*    AliAnalysisTaskSE::fgAODDimuons        = NULL;
68
69 AliAnalysisTaskSE::AliAnalysisTaskSE():
70     AliAnalysisTask(),
71     fDebug(0),
72     fEntry(0),
73     fInputEvent(0x0),
74     fESDfriend(0x0),
75     fInputHandler(0x0),
76     fOutputAOD(0x0),
77     fMCEvent(0x0),
78     fTreeA(0x0),
79     fCurrentRunNumber(-1),
80     fHistosQA(0x0),
81     fOfflineTriggerMask(0),
82     fMultiInputHandler(0),
83     fMCEventHandler(0)
84 {
85   // Default constructor
86 }
87
88 AliAnalysisTaskSE::AliAnalysisTaskSE(const char* name):
89     AliAnalysisTask(name, "AnalysisTaskSE"),
90     fDebug(0),
91     fEntry(0),
92     fInputEvent(0x0),
93     fESDfriend(0x0),
94     fInputHandler(0x0),
95     fOutputAOD(0x0),
96     fMCEvent(0x0),
97     fTreeA(0x0),
98     fCurrentRunNumber(-1),
99     fHistosQA(0x0),
100     fOfflineTriggerMask(0),
101     fMultiInputHandler(0),
102     fMCEventHandler(0)
103 {
104   // Default constructor
105     DefineInput (0, TChain::Class());
106     DefineOutput(0,  TTree::Class());
107 }
108
109 AliAnalysisTaskSE::AliAnalysisTaskSE(const AliAnalysisTaskSE& obj):
110     AliAnalysisTask(obj),
111     fDebug(0),
112     fEntry(0),
113     fInputEvent(0x0),
114     fESDfriend(0x0),
115     fInputHandler(0x0),
116     fOutputAOD(0x0),
117     fMCEvent(0x0),
118     fTreeA(0x0),
119     fCurrentRunNumber(-1),
120     fHistosQA(0x0),
121     fOfflineTriggerMask(0),
122     fMultiInputHandler(obj.fMultiInputHandler),
123     fMCEventHandler(obj.fMCEventHandler)
124 {
125 // Copy constructor
126     fDebug            = obj.fDebug;
127     fEntry            = obj.fEntry;
128     fInputEvent       = obj.fInputEvent;
129     fESDfriend        = obj.fESDfriend;
130     fInputHandler     = obj.fInputHandler;
131     fOutputAOD        = obj.fOutputAOD;
132     fMCEvent          = obj.fMCEvent;
133     fTreeA            = obj.fTreeA;    
134     fCurrentRunNumber = obj.fCurrentRunNumber;
135     fHistosQA         = obj.fHistosQA;
136
137 }
138
139
140 AliAnalysisTaskSE& AliAnalysisTaskSE::operator=(const AliAnalysisTaskSE& other)
141 {
142 // Assignment
143     AliAnalysisTask::operator=(other);
144     fDebug            = other.fDebug;
145     fEntry            = other.fEntry;
146     fInputEvent       = other.fInputEvent;
147     fESDfriend        = other.fESDfriend;
148     fInputHandler     = other.fInputHandler;
149     fOutputAOD        = other.fOutputAOD;
150     fMCEvent          = other.fMCEvent;
151     fTreeA            = other.fTreeA;    
152     fCurrentRunNumber = other.fCurrentRunNumber;
153     fHistosQA         = other.fHistosQA;
154     fOfflineTriggerMask = other.fOfflineTriggerMask;
155     fMultiInputHandler  = other.fMultiInputHandler;
156     fMCEventHandler     = other.fMCEventHandler;
157     return *this;
158 }
159
160 //______________________________________________________________________________
161 Bool_t AliAnalysisTaskSE::CheckPostData() const
162 {
163 // Checks if data was posted to all outputs defined by the task. If task does
164 // not have output slots this returns always kTRUE.
165    AliAnalysisDataContainer *coutput;
166    AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
167    for (Int_t islot=1; islot<fNoutputs; islot++) {
168       coutput = GetOutputSlot(islot)->GetContainer();
169       if (!mgr->GetOutputs()->FindObject(coutput)) continue;
170       if (!coutput->GetData()) return kFALSE;
171    }
172    CheckOwnership();
173    return kTRUE;
174 }
175
176 void AliAnalysisTaskSE::ConnectInputData(Option_t* /*option*/)
177 {
178 // Connect the input data
179     if (fDebug > 1) printf("AnalysisTaskSE::ConnectInputData() \n");
180
181    // Connect input handlers (multi input handler is handled)
182    ConnectMultiHandler();
183
184     if (fInputHandler) {
185         if ((fInputHandler->GetTree())->GetBranch("ESDfriend."))
186             fESDfriend = ((AliESDInputHandler*)fInputHandler)->GetESDfriend();
187
188         fInputEvent = fInputHandler->GetEvent();
189     } else if( fMCEvent ) {
190          AliWarning("No Input Event Handler connected, only MC Truth Event Handler") ; 
191     } else {
192          AliError("No Input Event Handler connected") ; 
193          return ; 
194     }
195     // Disconnect multi handler
196     DisconnectMultiHandler();
197 }
198
199 void AliAnalysisTaskSE::CreateOutputObjects()
200 {
201 // Create the output container
202 //
203 //  Default AOD
204     if (fDebug > 1) printf("AnalysisTaskSE::CreateOutPutData() \n");
205
206     AliAODHandler* handler = dynamic_cast<AliAODHandler*> 
207          ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
208     
209     Bool_t merging = kFALSE;
210     AliAODInputHandler* aodIH = static_cast<AliAODInputHandler*>((AliAnalysisManager::GetAnalysisManager())->GetInputEventHandler());
211     if (aodIH) {
212         if (aodIH->GetMergeEvents()) merging = kTRUE;
213     }
214     
215
216     // Check if AOD replication has been required
217     
218     if (handler) {
219         fOutputAOD   = handler->GetAOD();
220         fTreeA = handler->GetTree();
221         if (fOutputAOD && !(handler->IsStandard())) {
222             if ((handler->NeedsHeaderReplication()) && !(fgAODHeader)) 
223                 {
224                  if (fDebug > 1) AliInfo("Replicating header");
225                  fgAODHeader = new AliAODHeader;
226                  handler->AddBranch("AliAODHeader", &fgAODHeader);
227                 }
228             if ((handler->NeedsTracksBranchReplication() || merging) && !(fgAODTracks))      
229             {   
230                 if (fDebug > 1) AliInfo("Replicating track branch\n");
231                 fgAODTracks = new TClonesArray("AliAODTrack",500);
232                 fgAODTracks->SetName("tracks");
233                 handler->AddBranch("TClonesArray", &fgAODTracks);
234             }    
235             if ((handler->NeedsVerticesBranchReplication() || merging) && !(fgAODVertices))
236             {
237                 if (fDebug > 1) AliInfo("Replicating vertices branch\n");
238                 fgAODVertices = new TClonesArray("AliAODVertex",500);
239                 fgAODVertices->SetName("vertices");
240                 handler->AddBranch("TClonesArray", &fgAODVertices);
241             }   
242             if ((handler->NeedsV0sBranchReplication()) && !(fgAODV0s))    
243             {   
244                 if (fDebug > 1) AliInfo("Replicating V0s branch\n");
245                 fgAODV0s = new TClonesArray("AliAODv0",500);
246                 fgAODV0s->SetName("v0s");
247                 handler->AddBranch("TClonesArray", &fgAODV0s);
248             }
249             if ((handler->NeedsTrackletsBranchReplication()) && !(fgAODTracklets))        
250             {   
251                 if (fDebug > 1) AliInfo("Replicating Tracklets branch\n");
252                 fgAODTracklets = new AliAODTracklets("tracklets","tracklets");
253                 handler->AddBranch("AliAODTracklets", &fgAODTracklets);
254             }
255             if ((handler->NeedsPMDClustersBranchReplication()) && !(fgAODPMDClusters))    
256             {   
257                 if (fDebug > 1) AliInfo("Replicating PMDClusters branch\n");
258                 fgAODPMDClusters = new TClonesArray("AliAODPmdCluster",500);
259                 fgAODPMDClusters->SetName("pmdClusters");
260                 handler->AddBranch("TClonesArray", &fgAODPMDClusters);
261             }
262             if ((handler->NeedsJetsBranchReplication() || merging) && !(fgAODJets))       
263             {   
264                 if (fDebug > 1) AliInfo("Replicating Jets branch\n");
265                 fgAODJets = new TClonesArray("AliAODJet",500);
266                 fgAODJets->SetName("jets");
267                 handler->AddBranch("TClonesArray", &fgAODJets);
268             }
269             if ((handler->NeedsFMDClustersBranchReplication()) && !(fgAODFMDClusters))    
270             {   
271                 AliInfo("Replicating FMDClusters branch\n");
272                 fgAODFMDClusters = new TClonesArray("AliAODFmdCluster",500);
273                 fgAODFMDClusters->SetName("fmdClusters");
274                 handler->AddBranch("TClonesArray", &fgAODFMDClusters);
275             }
276             if ((handler->NeedsCaloClustersBranchReplication() || merging) && !(fgAODCaloClusters))       
277             {   
278                 if (fDebug > 1) AliInfo("Replicating CaloClusters branch\n");
279                 fgAODCaloClusters = new TClonesArray("AliAODCaloCluster",500);
280                 fgAODCaloClusters->SetName("caloClusters");
281                 handler->AddBranch("TClonesArray", &fgAODCaloClusters);
282
283                 fgAODEmcalCells = new AliAODCaloCells();
284                 fgAODEmcalCells->SetName("emcalCells");
285                 handler->AddBranch("AliAODCaloCells", &fgAODEmcalCells);
286
287                 fgAODPhosCells = new AliAODCaloCells();
288                 fgAODPhosCells->SetName("phosCells");
289                 handler->AddBranch("AliAODCaloCells", &fgAODPhosCells);
290             }
291             if ((handler->NeedsMCParticlesBranchReplication() || merging) && !(fgAODMCParticles))         
292             {   
293                 if (fDebug > 1) AliInfo("Replicating MCParticles branch\n");
294                 fgAODMCParticles = new TClonesArray("AliAODMCParticle",500);
295                 fgAODMCParticles->SetName("mcparticles");
296                 handler->AddBranch("TClonesArray", &fgAODMCParticles);
297             }
298             if ((handler->NeedsDimuonsBranchReplication() || merging) && !(fgAODDimuons))      
299             {   
300                 if (fDebug > 1) AliInfo("Replicating dimuon branch\n");
301                 fgAODDimuons = new TClonesArray("AliAODDimuon",0);
302                 fgAODDimuons->SetName("dimuons");
303                 handler->AddBranch("TClonesArray", &fgAODDimuons);
304             }    
305
306             // cache the pointerd in the AODEvent
307             fOutputAOD->GetStdContent();
308         }
309     }
310     ConnectMultiHandler();
311     UserCreateOutputObjects();
312     DisconnectMultiHandler();
313 }
314
315 void AliAnalysisTaskSE::Exec(Option_t* option)
316 {
317 //
318 // Exec analysis of one event
319
320     ConnectMultiHandler();
321
322     if ( fDebug >= 10)
323       printf("Task is active %5d\n", IsActive());
324     
325     if (fDebug > 1) AliInfo("AliAnalysisTaskSE::Exec() \n");
326 //
327     AliAODHandler* handler = dynamic_cast<AliAODHandler*> 
328         ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
329
330     AliAODInputHandler* aodH = dynamic_cast<AliAODInputHandler*>(fInputHandler);
331 //
332 // Was event selected ? If no event selection mechanism, the event SHOULD be selected (AG)
333     UInt_t isSelected = AliVEvent::kAny;
334     if( fInputHandler && fInputHandler->GetEventSelection()) {
335       // Get the actual offline trigger mask for the event and AND it with the
336       // requested mask. If no mask requested select by default the event.
337       if (fOfflineTriggerMask)
338          isSelected = fOfflineTriggerMask & fInputHandler->IsEventSelected();
339     }
340 //  Functionality below moved in the filter tasks (AG)
341 //    if (handler) handler->SetFillAOD(isSelected);
342
343     if( fInputHandler ) {
344         fEntry = fInputHandler->GetReadEntry();
345         fESDfriend = ((AliESDInputHandler*)fInputHandler)->GetESDfriend();
346     }
347     
348
349 // Notify the change of run number
350     if (InputEvent() && (InputEvent()->GetRunNumber() != fCurrentRunNumber)) {
351         fCurrentRunNumber = InputEvent()->GetRunNumber();
352         NotifyRun();
353     }    
354            
355     else if( fMCEvent )
356        fEntry = fMCEvent->Header()->GetEvent(); 
357     if ( !((Entry()-1)%100) && fDebug > 0) 
358          AliInfo(Form("%s ----> Processing event # %lld", CurrentFileName(), Entry()));
359
360     
361     
362
363     if (handler && aodH) {
364         fMCEvent = aodH->MCEvent();
365         Bool_t merging = aodH->GetMergeEvents();
366         AliAODEvent* aod = dynamic_cast<AliAODEvent*>(InputEvent());
367
368         if (aod && !(handler->IsStandard()) && !(handler->AODIsReplicated())) {
369             if ((handler->NeedsHeaderReplication()) && (fgAODHeader))
370             {
371               // copy the contents by assigment
372               *fgAODHeader =  *(aod->GetHeader());
373             }
374             if ((handler->NeedsTracksBranchReplication() || merging) && (fgAODTracks))
375             {
376                 TClonesArray* tracks = aod->GetTracks();
377                 new (fgAODTracks) TClonesArray(*tracks);
378             }
379             if ((handler->NeedsVerticesBranchReplication() || merging) && (fgAODVertices))
380             {
381                 TClonesArray* vertices = aod->GetVertices();
382                 new (fgAODVertices) TClonesArray(*vertices);
383             }
384             if ((handler->NeedsV0sBranchReplication()) && (fgAODV0s))
385             {
386                 TClonesArray* v0s = aod->GetV0s();
387                 new (fgAODV0s) TClonesArray(*v0s);
388             }
389             if ((handler->NeedsTrackletsBranchReplication()) && (fgAODTracklets))
390             {
391               *fgAODTracklets = *aod->GetTracklets();
392             }
393             if ((handler->NeedsPMDClustersBranchReplication()) && (fgAODPMDClusters))
394             {
395                 TClonesArray* pmdClusters = aod->GetPmdClusters();
396                 new (fgAODPMDClusters) TClonesArray(*pmdClusters);
397             }
398             if ((handler->NeedsJetsBranchReplication() || merging) && (fgAODJets))
399             {
400                 TClonesArray* jets = aod->GetJets();
401                 new (fgAODJets) TClonesArray(*jets);
402             }
403             if ((handler->NeedsFMDClustersBranchReplication()) && (fgAODFMDClusters))
404             {
405                 TClonesArray* fmdClusters = aod->GetFmdClusters();
406                 new (fgAODFMDClusters) TClonesArray(*fmdClusters);
407             }
408             if ((handler->NeedsCaloClustersBranchReplication() || merging) && (fgAODCaloClusters))
409             {
410                 TClonesArray* caloClusters = aod->GetCaloClusters();
411                 new (fgAODCaloClusters) TClonesArray(*caloClusters);
412             }
413
414             if ((handler->NeedsMCParticlesBranchReplication() || merging) && (fgAODMCParticles))
415             {
416                 TClonesArray* mcParticles = (TClonesArray*) (aod->FindListObject("mcparticles"));
417                 new (fgAODMCParticles) TClonesArray(*mcParticles);
418             }
419             
420             if ((handler->NeedsDimuonsBranchReplication() || merging) && (fgAODDimuons))
421             {
422                 fgAODDimuons->Clear();
423                 TClonesArray& dimuons = *fgAODDimuons;
424                 TClonesArray& tracksnew = *fgAODTracks;
425                 
426                 Int_t nMuonTrack[100]; 
427                 for(Int_t imuon = 0; imuon < 100; imuon++) nMuonTrack[imuon] = 0;
428                 Int_t nMuons=0;
429                 for(Int_t ii=0; ii < fgAODTracks->GetEntries(); ii++){
430                     AliAODTrack *track = (AliAODTrack*) fgAODTracks->At(ii);
431                     if(track->IsMuonTrack()) {
432                         nMuonTrack[nMuons]= ii;
433                         nMuons++;
434                     }  
435                 }
436                 Int_t jDimuons=0;
437                 if(nMuons >= 2){
438                     for(Int_t i = 0; i < nMuons; i++){
439                         Int_t index0 = nMuonTrack[i];
440                         for(Int_t j = i+1; j < nMuons; j++){
441                             Int_t index1 = nMuonTrack[j];
442                             tracksnew.At(index0)->ResetBit(kIsReferenced);
443                             tracksnew.At(index0)->SetUniqueID(0); 
444                             tracksnew.At(index1)->ResetBit(kIsReferenced);
445                             tracksnew.At(index1)->SetUniqueID(0);
446                             new(dimuons[jDimuons++]) AliAODDimuon(tracksnew.At(index0),tracksnew.At(index1));
447                         }
448                     }    
449                 }
450             }
451             
452             // Additional merging if needed
453             if (merging) {
454                 // mcParticles
455                 TClonesArray* mcparticles = (TClonesArray*) ((aodH->GetEventToMerge())->FindListObject("mcparticles"));
456                 Int_t npart = mcparticles->GetEntries();
457                 Int_t nc = fgAODMCParticles->GetEntries();
458                 Int_t nc0 = nc;
459                 
460                 for (Int_t i = 0; i < npart; i++) {
461                     AliAODMCParticle* particle = (AliAODMCParticle*) mcparticles->At(i);
462                     new((*fgAODMCParticles)[nc++]) AliAODMCParticle(*particle);
463                 }
464                 
465                 // tracks
466                 TClonesArray* tracks = aodH->GetEventToMerge()->GetTracks();
467                 Int_t ntr = tracks->GetEntries();
468                 nc  = fgAODTracks->GetEntries();        
469                 for (Int_t i = 0; i < ntr; i++) {
470                     AliAODTrack*    track = (AliAODTrack*) tracks->At(i);
471                     AliAODTrack* newtrack = new((*fgAODTracks)[nc++]) AliAODTrack(*track);
472                     newtrack->SetLabel(newtrack->GetLabel() + nc0);
473                 }
474
475                 for (Int_t i = 0; i < nc; i++) 
476                 {
477                     AliAODTrack* track = (AliAODTrack*) fgAODTracks->At(i);
478                     track->ResetBit(kIsReferenced);
479                     track->SetUniqueID(0);
480                 }
481                 
482                 
483                 // clusters
484                 TClonesArray* clusters = aodH->GetEventToMerge()->GetCaloClusters();
485                 Int_t ncl  = clusters->GetEntries();
486                 nc         =  fgAODCaloClusters->GetEntries();
487                 for (Int_t i = 0; i < ncl; i++) {
488                     AliAODCaloCluster*    cluster = (AliAODCaloCluster*) clusters->At(i);
489                     new((*fgAODCaloClusters)[nc++]) AliAODCaloCluster(*cluster);
490                 }
491                 // cells
492                 AliAODCaloCells* cellsA = aodH->GetEventToMerge()->GetEMCALCells();
493                 Int_t ncells  = cellsA->GetNumberOfCells();
494                 nc = fgAODEmcalCells->GetNumberOfCells();
495                 
496                 for (Int_t i  = 0; i < ncells; i++) {
497                     Int_t cn  = cellsA->GetCellNumber(i);
498                     Int_t pos = fgAODEmcalCells->GetCellPosition(cn);
499                     if (pos >= 0) {
500                         Double_t amp = cellsA->GetAmplitude(i) + fgAODEmcalCells->GetAmplitude(pos);
501                         fgAODEmcalCells->SetCell(pos, cn, amp);
502                     } else {
503                         Double_t amp = cellsA->GetAmplitude(i);
504                         fgAODEmcalCells->SetCell(nc++, cn, amp);
505                         fgAODEmcalCells->Sort();
506                     }
507                 }
508                 
509                 
510             } // merging
511             
512             handler->SetAODIsReplicated();
513         }
514     }
515
516 // Call the user analysis    
517     if (!fMCEventHandler) {
518         if (isSelected) 
519             UserExec(option);
520     } else {
521         if (isSelected && (fMCEventHandler->InitOk())) 
522             UserExec(option);
523     }
524     
525 // Added protection in case the derived task is not an AOD producer.
526     AliAnalysisDataSlot *out0 = GetOutputSlot(0);
527     if (out0 && out0->IsConnected()) PostData(0, fTreeA);    
528     
529     DisconnectMultiHandler();
530 }
531
532 const char* AliAnalysisTaskSE::CurrentFileName()
533 {
534 // Returns the current file name    
535     if( fInputHandler )
536       return fInputHandler->GetTree()->GetCurrentFile()->GetName();
537     else if( fMCEvent )
538       return ((AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()))->TreeK()->GetCurrentFile()->GetName();
539     else return "";
540 }
541
542 void AliAnalysisTaskSE::AddAODBranch(const char* cname, void* addobj, const char *fname)
543 {
544     // Add a new branch to the aod tree
545     AliAODHandler* handler = dynamic_cast<AliAODHandler*> 
546         ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
547     if (handler) {
548         handler->AddBranch(cname, addobj, fname);
549     }
550 }
551
552 Bool_t AliAnalysisTaskSE::IsStandardAOD() const
553 {
554 // Check if the output AOD handler is configured for standard or delta AOD.
555 // Users should first check that AODEvent() returns non-null.
556     AliAODHandler* handler = dynamic_cast<AliAODHandler*> 
557          ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
558     if (!handler) {
559        Error("IsStandardAOD", "No AOD handler. Please use AODEvent() to check this first");
560        return kTRUE;
561     }
562     return handler->IsStandard();   
563 }
564
565 Bool_t AliAnalysisTaskSE::Notify()
566 {
567     return (UserNotify());
568 }
569
570 const AliEventTag *AliAnalysisTaskSE::EventTag() const
571 {
572 // Returns tag for the current event, if any. The return value should always be checked by the user.
573    if (!fInputHandler) {
574       Error("EventTag", "Input handler not yet available. Call this in UserExec");
575       return NULL;
576    }
577    return fInputHandler->GetEventTag();
578 }
579
580 void AliAnalysisTaskSE::LoadBranches() const
581 {
582 // Load all branches declared in fBranchNames data member of the parent class.
583 // Should be called in UserExec.
584   if (!fInputHandler) {
585      Error("LoadBranches", "Input handler not available yet. Call this in UserExec");
586      return;
587   }
588   AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
589   if (mgr->GetAutoBranchLoading()) return;
590   TString taskbranches;
591   GetBranches(fInputHandler->GetDataType(), taskbranches);
592   if (taskbranches.IsNull()) return;
593   TObjArray *arr = taskbranches.Tokenize(",");
594   TIter next(arr);
595   TObject *obj;
596   while ((obj=next())) mgr->LoadBranch(obj->GetName());
597 }
598
599
600 //_________________________________________________________________________________________________
601 void AliAnalysisTaskSE::ConnectMultiHandler()
602 {
603    //
604    // Connect MultiHandler
605    //
606    fInputHandler = (AliInputEventHandler *)((AliAnalysisManager::GetAnalysisManager())->GetInputEventHandler());
607    fMultiInputHandler = dynamic_cast<AliMultiInputEventHandler *>(fInputHandler);
608    if (fMultiInputHandler) {
609       fInputHandler = dynamic_cast<AliInputEventHandler *>(fMultiInputHandler->GetFirstInputEventHandler());
610       fMCEventHandler = dynamic_cast<AliMCEventHandler *>(fMultiInputHandler->GetFirstMCEventHandler());
611    } else { 
612       fMCEventHandler = dynamic_cast<AliMCEventHandler *>((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler());
613    }
614    if (fMCEventHandler) fMCEvent = fMCEventHandler->MCEvent();
615 }
616
617 //_________________________________________________________________________________________________
618 void AliAnalysisTaskSE::DisconnectMultiHandler()
619 {
620    //
621    // Disconnect MultiHandler
622    //
623    if (fMultiInputHandler) fInputHandler = fMultiInputHandler;
624 }