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()) {
 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 }