Adding a reminder for coders
[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     // Check if AOD replication has been required
216     if (handler) {
217         fOutputAOD   = handler->GetAOD();
218         fTreeA = handler->GetTree();
219         if (fOutputAOD && !(handler->IsStandard())) {
220             if ((handler->NeedsHeaderReplication() || merging) && !(fgAODHeader)) 
221                 {
222                  if (fDebug > 1) AliInfo("Replicating header");
223                  fgAODHeader = new AliAODHeader;
224                  handler->AddBranch("AliAODHeader", &fgAODHeader);
225                 }
226             if ((handler->NeedsTracksBranchReplication() || merging) && !(fgAODTracks))      
227             {   
228                 if (fDebug > 1) AliInfo("Replicating track branch\n");
229                 fgAODTracks = new TClonesArray("AliAODTrack",500);
230                 fgAODTracks->SetName("tracks");
231                 handler->AddBranch("TClonesArray", &fgAODTracks);
232             }    
233             if ((handler->NeedsVerticesBranchReplication() || merging) && !(fgAODVertices))
234             {
235                 if (fDebug > 1) AliInfo("Replicating vertices branch\n");
236                 fgAODVertices = new TClonesArray("AliAODVertex",500);
237                 fgAODVertices->SetName("vertices");
238                 handler->AddBranch("TClonesArray", &fgAODVertices);
239             }   
240             if ((handler->NeedsV0sBranchReplication()) && !(fgAODV0s))    
241             {   
242                 if (fDebug > 1) AliInfo("Replicating V0s branch\n");
243                 fgAODV0s = new TClonesArray("AliAODv0",500);
244                 fgAODV0s->SetName("v0s");
245                 handler->AddBranch("TClonesArray", &fgAODV0s);
246             }
247             if ((handler->NeedsTrackletsBranchReplication()) && !(fgAODTracklets))        
248             {   
249                 if (fDebug > 1) AliInfo("Replicating Tracklets branch\n");
250                 fgAODTracklets = new AliAODTracklets("tracklets","tracklets");
251                 handler->AddBranch("AliAODTracklets", &fgAODTracklets);
252             }
253             if ((handler->NeedsPMDClustersBranchReplication()) && !(fgAODPMDClusters))    
254             {   
255                 if (fDebug > 1) AliInfo("Replicating PMDClusters branch\n");
256                 fgAODPMDClusters = new TClonesArray("AliAODPmdCluster",500);
257                 fgAODPMDClusters->SetName("pmdClusters");
258                 handler->AddBranch("TClonesArray", &fgAODPMDClusters);
259             }
260             if ((handler->NeedsJetsBranchReplication() || merging) && !(fgAODJets))       
261             {   
262                 if (fDebug > 1) AliInfo("Replicating Jets branch\n");
263                 fgAODJets = new TClonesArray("AliAODJet",500);
264                 fgAODJets->SetName("jets");
265                 handler->AddBranch("TClonesArray", &fgAODJets);
266             }
267             if ((handler->NeedsFMDClustersBranchReplication()) && !(fgAODFMDClusters))    
268             {   
269                 AliInfo("Replicating FMDClusters branch\n");
270                 fgAODFMDClusters = new TClonesArray("AliAODFmdCluster",500);
271                 fgAODFMDClusters->SetName("fmdClusters");
272                 handler->AddBranch("TClonesArray", &fgAODFMDClusters);
273             }
274             if ((handler->NeedsCaloClustersBranchReplication() || merging) && !(fgAODCaloClusters))       
275             {   
276                 if (fDebug > 1) AliInfo("Replicating CaloClusters branch\n");
277                 fgAODCaloClusters = new TClonesArray("AliAODCaloCluster",500);
278                 fgAODCaloClusters->SetName("caloClusters");
279                 handler->AddBranch("TClonesArray", &fgAODCaloClusters);
280
281                 fgAODEmcalCells = new AliAODCaloCells("emcalCells","emcalCells",AliVCaloCells::kEMCALCell);
282                 handler->AddBranch("AliAODCaloCells", &fgAODEmcalCells);
283
284                 fgAODPhosCells = new AliAODCaloCells("phosCells","phosCells",AliVCaloCells::kPHOSCell);
285                 handler->AddBranch("AliAODCaloCells", &fgAODPhosCells);
286                 
287             }
288             if ((handler->NeedsMCParticlesBranchReplication() || merging) && !(fgAODMCParticles))         
289             {   
290                 if (fDebug > 1) AliInfo("Replicating MCParticles branch\n");
291                 fgAODMCParticles = new TClonesArray("AliAODMCParticle",500);
292                 fgAODMCParticles->SetName("mcparticles");
293                 handler->AddBranch("TClonesArray", &fgAODMCParticles);
294             }
295             if ((handler->NeedsDimuonsBranchReplication() || merging) && !(fgAODDimuons))      
296             {   
297                 if (fDebug > 1) AliInfo("Replicating dimuon branch\n");
298                 fgAODDimuons = new TClonesArray("AliAODDimuon",0);
299                 fgAODDimuons->SetName("dimuons");
300                 handler->AddBranch("TClonesArray", &fgAODDimuons);
301             }    
302
303             // cache the pointerd in the AODEvent
304             fOutputAOD->GetStdContent();
305         }
306     }
307     ConnectMultiHandler();
308     UserCreateOutputObjects();
309     DisconnectMultiHandler();
310 }
311
312 void AliAnalysisTaskSE::Exec(Option_t* option)
313 {
314 //
315 // Exec analysis of one event
316
317     ConnectMultiHandler();
318
319     if ( fDebug >= 10)
320       printf("Task is active %5d\n", IsActive());
321     
322     if (fDebug > 1) AliInfo("AliAnalysisTaskSE::Exec() \n");
323 //
324     AliAODHandler* handler = dynamic_cast<AliAODHandler*> 
325         ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
326
327     AliAODInputHandler* aodH = dynamic_cast<AliAODInputHandler*>(fInputHandler);
328 //
329 // Was event selected ? If no event selection mechanism, the event SHOULD be selected (AG)
330     UInt_t isSelected = AliVEvent::kAny;
331     if( fInputHandler && (fInputHandler->GetEventSelection() || aodH)) {
332       // Get the actual offline trigger mask for the event and AND it with the
333       // requested mask. If no mask requested select by default the event.
334       if (fOfflineTriggerMask)
335          isSelected = fOfflineTriggerMask & fInputHandler->IsEventSelected();
336     }
337 //  Functionality below moved in the filter tasks (AG)
338 //    if (handler) handler->SetFillAOD(isSelected);
339
340     if( fInputHandler ) {
341         fEntry = fInputHandler->GetReadEntry();
342         fESDfriend = ((AliESDInputHandler*)fInputHandler)->GetESDfriend();
343     }
344     
345
346 // Notify the change of run number
347     if (InputEvent() && (InputEvent()->GetRunNumber() != fCurrentRunNumber)) {
348         fCurrentRunNumber = InputEvent()->GetRunNumber();
349         NotifyRun();
350     }    
351            
352     else if( fMCEvent )
353        fEntry = fMCEvent->Header()->GetEvent(); 
354     if ( !((Entry()-1)%100) && fDebug > 0) 
355          AliInfo(Form("%s ----> Processing event # %lld", CurrentFileName(), Entry()));
356
357     
358     
359
360     if (handler && aodH) {
361         fMCEvent = aodH->MCEvent();
362         Bool_t merging = aodH->GetMergeEvents();
363       
364   // Do not analyze merged events if last embedded file has less events than normal event, 
365   // skip analysis after last embeded event 
366   if(merging){
367     if(aodH->GetReadEntry() + aodH->GetMergeOffset() >= aodH->GetTreeToMerge()->GetEntriesFast()){
368       //printf("Skip Entry %lld, Offset %d, Tree Entries %d\n",aodH->GetReadEntry(),aodH->GetMergeOffset(), aodH->GetTreeToMerge()->GetEntries());
369           
370       // Do I need to add the lines before the return?
371       // Added protection in case the derived task is not an AOD producer.
372       AliAnalysisDataSlot *out0 = GetOutputSlot(0);
373       if (out0 && out0->IsConnected()) PostData(0, fTreeA);    
374           
375       DisconnectMultiHandler();
376           
377       return;
378     }
379     //else   printf("MERGE Entry %lld, Offset %d, Tree Entries %d\n",aodH->GetReadEntry(),aodH->GetMergeOffset(), aodH->GetTreeToMerge()->GetEntries());
380   }
381       
382         AliAODEvent* aod = dynamic_cast<AliAODEvent*>(InputEvent());
383
384         if (aod && !(handler->IsStandard()) && !(handler->AODIsReplicated())) {
385             if ((handler->NeedsHeaderReplication() || merging) && (fgAODHeader))
386             {
387               // copy the contents by assigment
388               *fgAODHeader =  *(aod->GetHeader());
389             }
390             if ((handler->NeedsTracksBranchReplication() || (merging &&  aodH->GetMergeTracks())) && (fgAODTracks))
391             {
392                 TClonesArray* tracks = aod->GetTracks();
393                 new (fgAODTracks) TClonesArray(*tracks);
394             }
395             if ((handler->NeedsVerticesBranchReplication() || merging) && (fgAODVertices))
396             {
397                 TClonesArray* vertices = aod->GetVertices();
398                 new (fgAODVertices) TClonesArray(*vertices);
399             }
400             if ((handler->NeedsV0sBranchReplication()) && (fgAODV0s))
401             {
402                 TClonesArray* v0s = aod->GetV0s();
403                 new (fgAODV0s) TClonesArray(*v0s);
404             }
405             if ((handler->NeedsTrackletsBranchReplication()) && (fgAODTracklets))
406             {
407               *fgAODTracklets = *aod->GetTracklets();
408             }
409             if ((handler->NeedsPMDClustersBranchReplication()) && (fgAODPMDClusters))
410             {
411                 TClonesArray* pmdClusters = aod->GetPmdClusters();
412                 new (fgAODPMDClusters) TClonesArray(*pmdClusters);
413             }
414             if ((handler->NeedsJetsBranchReplication() || (merging &&aodH->GetMergeTracks())) && (fgAODJets))
415             {
416                 TClonesArray* jets = aod->GetJets();
417                 new (fgAODJets) TClonesArray(*jets);
418             }
419             if ((handler->NeedsFMDClustersBranchReplication()) && (fgAODFMDClusters))
420             {
421                 TClonesArray* fmdClusters = aod->GetFmdClusters();
422                 new (fgAODFMDClusters) TClonesArray(*fmdClusters);
423             }
424             if ((handler->NeedsCaloClustersBranchReplication() || 
425                  (merging && (aodH->GetMergeEMCALClusters() || aodH->GetMergePHOSClusters()))) 
426                 && (fgAODCaloClusters))
427             {
428                 TClonesArray* caloClusters = aod->GetCaloClusters();
429                 new (fgAODCaloClusters) TClonesArray(*caloClusters);
430             }
431
432             if ((handler->NeedsMCParticlesBranchReplication() || merging) && (fgAODMCParticles))
433             {
434                 TClonesArray* mcParticles = (TClonesArray*) (aod->FindListObject("mcparticles"));
435                 if( mcParticles )
436                   new (fgAODMCParticles) TClonesArray(*mcParticles);
437             }
438             
439             if ((handler->NeedsDimuonsBranchReplication() || (merging && aodH->GetMergeTracks())) && (fgAODDimuons))
440             {
441                 fgAODDimuons->Clear();
442                 TClonesArray& dimuons = *fgAODDimuons;
443                 TClonesArray& tracksnew = *fgAODTracks;
444                 
445                 Int_t nMuonTrack[100]; 
446                 for(Int_t imuon = 0; imuon < 100; imuon++) nMuonTrack[imuon] = 0;
447                 Int_t nMuons=0;
448                 for(Int_t ii=0; ii < fgAODTracks->GetEntries(); ii++){
449                     AliAODTrack *track = (AliAODTrack*) fgAODTracks->At(ii);
450                     if(track->IsMuonTrack()) {
451                         nMuonTrack[nMuons]= ii;
452                         nMuons++;
453                     }  
454                 }
455                 Int_t jDimuons=0;
456                 if(nMuons >= 2){
457                     for(Int_t i = 0; i < nMuons; i++){
458                         Int_t index0 = nMuonTrack[i];
459                         for(Int_t j = i+1; j < nMuons; j++){
460                             Int_t index1 = nMuonTrack[j];
461                             tracksnew.At(index0)->ResetBit(kIsReferenced);
462                             tracksnew.At(index0)->SetUniqueID(0); 
463                             tracksnew.At(index1)->ResetBit(kIsReferenced);
464                             tracksnew.At(index1)->SetUniqueID(0);
465                             new(dimuons[jDimuons++]) AliAODDimuon(tracksnew.At(index0),tracksnew.At(index1));
466                         }
467                     }    
468                 }
469             }
470             // Additional merging if needed
471             if (merging) {
472               Int_t nc;
473
474                 // mcParticles
475                 TClonesArray* mcparticles = (TClonesArray*) ((aodH->GetEventToMerge())->FindListObject("mcparticles"));
476                 if( mcparticles ){
477                   Int_t npart = mcparticles->GetEntries();
478                   nc = fgAODMCParticles->GetEntries();
479                   
480                   for (Int_t i = 0; i < npart; i++) {
481                     AliAODMCParticle* particle = (AliAODMCParticle*) mcparticles->At(i);
482                     new((*fgAODMCParticles)[nc++]) AliAODMCParticle(*particle);
483                   }
484                 }
485
486                 // tracks
487                 TClonesArray* tracks = aodH->GetEventToMerge()->GetTracks();
488                 if(tracks && aodH->GetMergeTracks()){
489                   Int_t ntr = tracks->GetEntries();
490                   nc  = fgAODTracks->GetEntries();      
491                   for (Int_t i = 0; i < ntr; i++) {
492                     AliAODTrack*    track = (AliAODTrack*) tracks->At(i);
493                     AliAODTrack* newtrack = new((*fgAODTracks)[nc++]) AliAODTrack(*track);
494                     newtrack->SetLabel(newtrack->GetLabel() + fgAODMCParticles->GetEntries());
495                   }
496                   
497                   for (Int_t i = 0; i < nc; i++) 
498                     {
499                       AliAODTrack* track = (AliAODTrack*) fgAODTracks->At(i);
500                       track->ResetBit(kIsReferenced);
501                       track->SetUniqueID(0);
502                     }
503                 }
504                 
505                 // clusters
506                 TClonesArray* clusters = aodH->GetEventToMerge()->GetCaloClusters();
507                 if( clusters  && (aodH->GetMergeEMCALClusters() || aodH->GetMergePHOSClusters())) {
508                   Int_t ncl  = clusters->GetEntries();
509                   nc         =  fgAODCaloClusters->GetEntries();
510                   for (Int_t i = 0; i < ncl; i++) {
511                     AliAODCaloCluster*    cluster = (AliAODCaloCluster*) clusters->At(i);
512                     if(cluster->IsEMCAL() && !aodH->GetMergeEMCALClusters() ) continue;
513                     if(cluster->IsPHOS()  && !aodH->GetMergePHOSClusters()  ) continue;   
514                     new((*fgAODCaloClusters)[nc++]) AliAODCaloCluster(*cluster);
515                   }
516                 }
517
518                 // EMCAL cells
519                 //*fgAODEmcalCells =  *(aod->GetEMCALCells()); // This will be valid after 10.Mar.2011.
520                 if(aodH->GetMergeEMCALCells()) {
521                     AliAODCaloCells* copycells = aod->GetEMCALCells();
522                     fgAODEmcalCells->CreateContainer(copycells->GetNumberOfCells());
523                     nc  = copycells->GetNumberOfCells();
524                     while( nc-- ){ fgAODEmcalCells->SetCell(nc,copycells->GetCellNumber(nc),copycells->GetAmplitude(nc)); }
525
526                     AliAODCaloCells* cellsA = aodH->GetEventToMerge()->GetEMCALCells();
527                     if( cellsA ){
528                         Int_t ncells  = cellsA->GetNumberOfCells();
529                         nc = fgAODEmcalCells->GetNumberOfCells();
530                         for (Int_t i  = 0; i < ncells; i++) {
531                             Int_t cn  = cellsA->GetCellNumber(i);
532                             Int_t pos = fgAODEmcalCells->GetCellPosition(cn);
533                             if (pos >= 0) {
534                                 Double_t amp = cellsA->GetAmplitude(i) + fgAODEmcalCells->GetAmplitude(pos);
535                                 fgAODEmcalCells->SetCell(pos, cn, amp);
536                             } else {
537                                 AliAODCaloCells* copycells1 = new AliAODCaloCells(*fgAODEmcalCells);
538                                 fgAODEmcalCells->CreateContainer(nc+1);
539                                 Int_t nn = copycells1->GetNumberOfCells();
540                                 while( nn-- ){ fgAODEmcalCells->SetCell(nn,copycells1->GetCellNumber(nn),copycells1->GetAmplitude(nn)); }
541                                 fgAODEmcalCells->SetCell(nc++,cn,cellsA->GetAmplitude(i));
542                                 delete copycells1;
543                             }
544                         }
545                         fgAODEmcalCells->Sort();
546                     }
547                 } // merge emcal cells
548                 
549                 
550                 // PHOS cells
551                 //*fgAODPhosCells =  *(aod->GetPHOSCells()); // This will be valid after 10.Mar.2011.
552                 if(aodH->GetMergePHOSCells()) {
553                     AliAODCaloCells* copycells = aod->GetPHOSCells();
554                     fgAODPhosCells->CreateContainer(copycells->GetNumberOfCells());
555                     nc  = copycells->GetNumberOfCells();
556                     while( nc-- ){ fgAODPhosCells->SetCell(nc,copycells->GetCellNumber(nc),copycells->GetAmplitude(nc)); }
557                     AliAODCaloCells* cellsP = aodH->GetEventToMerge()->GetPHOSCells();
558                     if( cellsP ){
559                         Int_t ncellsP  = cellsP->GetNumberOfCells();
560                         nc = fgAODPhosCells->GetNumberOfCells();
561                         
562                         for (Int_t i  = 0; i < ncellsP; i++) {
563                             Int_t cn  = cellsP->GetCellNumber(i);
564                             Int_t pos = fgAODPhosCells->GetCellPosition(cn);
565                             if (pos >= 0) {
566                                 Double_t amp = cellsP->GetAmplitude(i) + fgAODPhosCells->GetAmplitude(pos);
567                                 fgAODPhosCells->SetCell(pos, cn, amp);
568                             } else {
569                                 AliAODCaloCells* copycells1 = new AliAODCaloCells(*fgAODPhosCells);
570                                 fgAODPhosCells->CreateContainer(nc+1);
571                                 Int_t nn = copycells1->GetNumberOfCells();
572                                 while( nn-- ){ fgAODPhosCells->SetCell(nn,copycells1->GetCellNumber(nn),copycells1->GetAmplitude(nn)); }
573                                 fgAODPhosCells->SetCell(nc++,cn,cellsP->GetAmplitude(i));
574                                 delete copycells1;
575                             }
576                         }
577                         fgAODPhosCells->Sort();
578                     }
579                 } // Merge PHOS Cells
580                         
581             } // merging
582             
583             handler->SetAODIsReplicated();
584         }
585     }
586
587
588 // Call the user analysis    
589     if (!fMCEventHandler) {
590         if (isSelected) 
591             UserExec(option);
592     } else {
593         if (isSelected && (fMCEventHandler->InitOk())) 
594             UserExec(option);
595     }
596     
597 // Added protection in case the derived task is not an AOD producer.
598     AliAnalysisDataSlot *out0 = GetOutputSlot(0);
599     if (out0 && out0->IsConnected()) PostData(0, fTreeA);    
600
601     DisconnectMultiHandler();
602 }
603
604 const char* AliAnalysisTaskSE::CurrentFileName()
605 {
606 // Returns the current file name    
607     if( fInputHandler )
608       return fInputHandler->GetTree()->GetCurrentFile()->GetName();
609     else if( fMCEvent )
610       return ((AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()))->TreeK()->GetCurrentFile()->GetName();
611     else return "";
612 }
613
614 void AliAnalysisTaskSE::AddAODBranch(const char* cname, void* addobj, const char *fname)
615 {
616     // Add a new branch to the aod tree
617     AliAODHandler* handler = dynamic_cast<AliAODHandler*> 
618         ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
619     if (handler) {
620         handler->AddBranch(cname, addobj, fname);
621     }
622 }
623
624 Bool_t AliAnalysisTaskSE::IsStandardAOD() const
625 {
626 // Check if the output AOD handler is configured for standard or delta AOD.
627 // Users should first check that AODEvent() returns non-null.
628     AliAODHandler* handler = dynamic_cast<AliAODHandler*> 
629          ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
630     if (!handler) {
631        Error("IsStandardAOD", "No AOD handler. Please use AODEvent() to check this first");
632        return kTRUE;
633     }
634     return handler->IsStandard();   
635 }
636
637 Bool_t AliAnalysisTaskSE::Notify()
638 {
639     return (UserNotify());
640 }
641
642 const AliEventTag *AliAnalysisTaskSE::EventTag() const
643 {
644 // Returns tag for the current event, if any. The return value should always be checked by the user.
645    if (!fInputHandler) {
646       Error("EventTag", "Input handler not yet available. Call this in UserExec");
647       return NULL;
648    }
649    return fInputHandler->GetEventTag();
650 }
651
652 void AliAnalysisTaskSE::LoadBranches() const
653 {
654 // Load all branches declared in fBranchNames data member of the parent class.
655 // Should be called in UserExec.
656   if (!fInputHandler) {
657      Error("LoadBranches", "Input handler not available yet. Call this in UserExec");
658      return;
659   }
660   AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
661   if (mgr->GetAutoBranchLoading()) return;
662   TString taskbranches;
663   GetBranches(fInputHandler->GetDataType(), taskbranches);
664   if (taskbranches.IsNull()) return;
665   TObjArray *arr = taskbranches.Tokenize(",");
666   TIter next(arr);
667   TObject *obj;
668   while ((obj=next())) mgr->LoadBranch(obj->GetName());
669 }
670
671
672 //_________________________________________________________________________________________________
673 void AliAnalysisTaskSE::ConnectMultiHandler()
674 {
675    //
676    // Connect MultiHandler
677    //
678    fInputHandler = (AliInputEventHandler *)((AliAnalysisManager::GetAnalysisManager())->GetInputEventHandler());
679    fMultiInputHandler = dynamic_cast<AliMultiInputEventHandler *>(fInputHandler);
680    if (fMultiInputHandler) {
681       fInputHandler = dynamic_cast<AliInputEventHandler *>(fMultiInputHandler->GetFirstInputEventHandler());
682       fMCEventHandler = dynamic_cast<AliMCEventHandler *>(fMultiInputHandler->GetFirstMCEventHandler());
683    } else { 
684       fMCEventHandler = dynamic_cast<AliMCEventHandler *>((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler());
685    }
686    if (fMCEventHandler) fMCEvent = fMCEventHandler->MCEvent();
687 }
688
689 //_________________________________________________________________________________________________
690 void AliAnalysisTaskSE::DisconnectMultiHandler()
691 {
692    //
693    // Disconnect MultiHandler
694    //
695    if (fMultiInputHandler) fInputHandler = fMultiInputHandler;
696 }