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 void AliAnalysisTaskSE::ConnectInputData(Option_t* /*option*/)
 162 {
 163 // Connect the input data
 164     if (fDebug > 1) printf("AnalysisTaskSE::ConnectInputData() \n");
 165
 166    // Connect input handlers (multi input handler is handled)
 167     ConnectMultiHandler();
 168
 169     if (fInputHandler) {
 170         if ((fInputHandler->GetTree())->GetBranch("ESDfriend."))
 171             fESDfriend = ((AliESDInputHandler*)fInputHandler)->GetESDfriend();
 172
 173         fInputEvent = fInputHandler->GetEvent();
 174     } else if( fMCEvent ) {
 175          AliWarning("No Input Event Handler connected, only MC Truth Event Handler") ;
 176     } else {
 177          AliError("No Input Event Handler connected") ;
 178          return ;
 179     }
 180     // Disconnect multi handler
 181     DisconnectMultiHandler();
 182 }
 183
 184 void AliAnalysisTaskSE::CreateOutputObjects()
 185 {
 186 // Create the output container
 187 //
 188 //  Default AOD
 189     if (fDebug > 1) printf("AnalysisTaskSE::CreateOutPutData() \n");
 190
 191     AliAODHandler* handler = dynamic_cast<AliAODHandler*>
 192          ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 193
 194     Bool_t merging = kFALSE;
 195     AliAODInputHandler* aodIH = static_cast<AliAODInputHandler*>((AliAnalysisManager::GetAnalysisManager())->GetInputEventHandler());
 196     if (aodIH) {
 197         if (aodIH->GetMergeEvents()) merging = kTRUE;
 198     }
 199
 200     // Check if AOD replication has been required
 201     if (handler) {
 202         fOutputAOD   = handler->GetAOD();
 203         fTreeA = handler->GetTree();
 204         if (fOutputAOD && !(handler->IsStandard())) {
 205             if ((handler->NeedsHeaderReplication() || merging) && !(fgAODHeader))
 206                 {
 207                  if (fDebug > 1) AliInfo("Replicating header");
 208                  fgAODHeader = new AliAODHeader;
 209                  handler->AddBranch("AliAODHeader", &fgAODHeader);
 210                 }
 211             if ((handler->NeedsTracksBranchReplication() || merging) && !(fgAODTracks))
 212             {
 213                 if (fDebug > 1) AliInfo("Replicating track branch\n");
 214                 fgAODTracks = new TClonesArray("AliAODTrack",500);
 215                 fgAODTracks->SetName("tracks");
 216                 handler->AddBranch("TClonesArray", &fgAODTracks);
 217             }
 218             if ((handler->NeedsVerticesBranchReplication() || merging) && !(fgAODVertices))
 219             {
 220                 if (fDebug > 1) AliInfo("Replicating vertices branch\n");
 221                 fgAODVertices = new TClonesArray("AliAODVertex",500);
 222                 fgAODVertices->SetName("vertices");
 223                 handler->AddBranch("TClonesArray", &fgAODVertices);
 224             }
 225             if ((handler->NeedsV0sBranchReplication()) && !(fgAODV0s))
 226             {
 227                 if (fDebug > 1) AliInfo("Replicating V0s branch\n");
 228                 fgAODV0s = new TClonesArray("AliAODv0",500);
 229                 fgAODV0s->SetName("v0s");
 230                 handler->AddBranch("TClonesArray", &fgAODV0s);
 231             }
 232             if ((handler->NeedsTrackletsBranchReplication()) && !(fgAODTracklets))
 233             {
 234                 if (fDebug > 1) AliInfo("Replicating Tracklets branch\n");
 235                 fgAODTracklets = new AliAODTracklets("tracklets","tracklets");
 236                 handler->AddBranch("AliAODTracklets", &fgAODTracklets);
 237             }
 238             if ((handler->NeedsPMDClustersBranchReplication()) && !(fgAODPMDClusters))
 239             {
 240                 if (fDebug > 1) AliInfo("Replicating PMDClusters branch\n");
 241                 fgAODPMDClusters = new TClonesArray("AliAODPmdCluster",500);
 242                 fgAODPMDClusters->SetName("pmdClusters");
 243                 handler->AddBranch("TClonesArray", &fgAODPMDClusters);
 244             }
 245             if ((handler->NeedsJetsBranchReplication() || merging) && !(fgAODJets))
 246             {
 247                 if (fDebug > 1) AliInfo("Replicating Jets branch\n");
 248                 fgAODJets = new TClonesArray("AliAODJet",500);
 249                 fgAODJets->SetName("jets");
 250                 handler->AddBranch("TClonesArray", &fgAODJets);
 251             }
 252             if ((handler->NeedsFMDClustersBranchReplication()) && !(fgAODFMDClusters))
 253             {
 254                 AliInfo("Replicating FMDClusters branch\n");
 255                 fgAODFMDClusters = new TClonesArray("AliAODFmdCluster",500);
 256                 fgAODFMDClusters->SetName("fmdClusters");
 257                 handler->AddBranch("TClonesArray", &fgAODFMDClusters);
 258             }
 259             if ((handler->NeedsCaloClustersBranchReplication() || merging) && !(fgAODCaloClusters))
 260             {
 261                 if (fDebug > 1) AliInfo("Replicating CaloClusters branch\n");
 262                 fgAODCaloClusters = new TClonesArray("AliAODCaloCluster",500);
 263                 fgAODCaloClusters->SetName("caloClusters");
 264                 handler->AddBranch("TClonesArray", &fgAODCaloClusters);
 265
 266                 fgAODEmcalCells = new AliAODCaloCells("emcalCells","emcalCells",AliVCaloCells::kEMCALCell);
 267                 handler->AddBranch("AliAODCaloCells", &fgAODEmcalCells);
 268
 269                 fgAODPhosCells = new AliAODCaloCells("phosCells","phosCells",AliVCaloCells::kPHOSCell);
 270                 handler->AddBranch("AliAODCaloCells", &fgAODPhosCells);
 271
 272             }
 273             if ((handler->NeedsMCParticlesBranchReplication() || merging) && !(fgAODMCParticles))
 274             {
 275                 if (fDebug > 1) AliInfo("Replicating MCParticles branch\n");
 276                 fgAODMCParticles = new TClonesArray("AliAODMCParticle",500);
 277                 fgAODMCParticles->SetName("mcparticles");
 278                 handler->AddBranch("TClonesArray", &fgAODMCParticles);
 279             }
 280             if ((handler->NeedsDimuonsBranchReplication() || merging) && !(fgAODDimuons))
 281             {
 282                 if (fDebug > 1) AliInfo("Replicating dimuon branch\n");
 283                 fgAODDimuons = new TClonesArray("AliAODDimuon",0);
 284                 fgAODDimuons->SetName("dimuons");
 285                 handler->AddBranch("TClonesArray", &fgAODDimuons);
 286             }
 287
 288             // cache the pointerd in the AODEvent
 289             fOutputAOD->GetStdContent();
 290         }
 291     }
 292     ConnectMultiHandler();
 293     UserCreateOutputObjects();
 294     DisconnectMultiHandler();
 295 }
 296
 297 void AliAnalysisTaskSE::Exec(Option_t* option)
 298 {
 299 //
 300 // Exec analysis of one event
 301
 302     ConnectMultiHandler();
 303
 304     if ( fDebug >= 10)
 305       printf("Task is active %5d\n", IsActive());
 306
 307     if (fDebug > 1) AliInfo("AliAnalysisTaskSE::Exec() \n");
 308 //
 309     AliAODHandler* handler = dynamic_cast<AliAODHandler*>
 310         ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 311
 312     AliAODInputHandler* aodH = dynamic_cast<AliAODInputHandler*>(fInputHandler);
 313 //
 314 // Was event selected ? If no event selection mechanism, the event SHOULD be selected (AG)
 315     UInt_t isSelected = AliVEvent::kAny;
 316     if( fInputHandler && (fInputHandler->GetEventSelection() || aodH)) {
 317       // Get the actual offline trigger mask for the event and AND it with the
 318       // requested mask. If no mask requested select by default the event.
 319       if (fOfflineTriggerMask)
 320          isSelected = fOfflineTriggerMask & fInputHandler->IsEventSelected();
 321     }
 322 //  Functionality below moved in the filter tasks (AG)
 323 //    if (handler) handler->SetFillAOD(isSelected);
 324
 325     if( fInputHandler ) {
 326         fEntry = fInputHandler->GetReadEntry();
 327         fESDfriend = ((AliESDInputHandler*)fInputHandler)->GetESDfriend();
 328     }
 329
 330
 331 // Notify the change of run number
 332     if (InputEvent() && (InputEvent()->GetRunNumber() != fCurrentRunNumber)) {
 333         fCurrentRunNumber = InputEvent()->GetRunNumber();
 334         NotifyRun();
 335     }
 336
 337     else if( fMCEvent )
 338        fEntry = fMCEvent->Header()->GetEvent();
 339     if ( !((Entry()-1)%100) && fDebug > 0)
 340          AliInfo(Form("%s ----> Processing event # %lld", CurrentFileName(), Entry()));
 341
 342
 343
 344
 345     if (handler && aodH) {
 346         fMCEvent = aodH->MCEvent();
 347         Bool_t merging = aodH->GetMergeEvents();
 348
 349   // Do not analyze merged events if last embedded file has less events than normal event,
 350   // skip analysis after last embeded event
 351   if(merging){
 352     if(aodH->GetReadEntry() + aodH->GetMergeOffset() >= aodH->GetTreeToMerge()->GetEntriesFast()){
 353       //printf("Skip Entry %lld, Offset %d, Tree Entries %d\n",aodH->GetReadEntry(),aodH->GetMergeOffset(), aodH->GetTreeToMerge()->GetEntries());
 354
 355       // Do I need to add the lines before the return?
 356       // Added protection in case the derived task is not an AOD producer.
 357       AliAnalysisDataSlot *out0 = GetOutputSlot(0);
 358       if (out0 && out0->IsConnected()) PostData(0, fTreeA);
 359
 360       DisconnectMultiHandler();
 361
 362       return;
 363     }
 364     //else   printf("MERGE Entry %lld, Offset %d, Tree Entries %d\n",aodH->GetReadEntry(),aodH->GetMergeOffset(), aodH->GetTreeToMerge()->GetEntries());
 365   }
 366
 367         AliAODEvent* aod = dynamic_cast<AliAODEvent*>(InputEvent());
 368
 369         if (aod && !(handler->IsStandard()) && !(handler->AODIsReplicated())) {
 370             if ((handler->NeedsHeaderReplication() || merging) && (fgAODHeader))
 371             {
 372               // copy the contents by assigment
 373               *fgAODHeader =  *(aod->GetHeader());
 374             }
 375             if ((handler->NeedsTracksBranchReplication() || (merging &&  aodH->GetMergeTracks())) && (fgAODTracks))
 376             {
 377                 TClonesArray* tracks = aod->GetTracks();
 378                 new (fgAODTracks) TClonesArray(*tracks);
 379             }
 380             if ((handler->NeedsVerticesBranchReplication() || merging) && (fgAODVertices))
 381             {
 382                 TClonesArray* vertices = aod->GetVertices();
 383                 new (fgAODVertices) TClonesArray(*vertices);
 384             }
 385             if ((handler->NeedsV0sBranchReplication()) && (fgAODV0s))
 386             {
 387                 TClonesArray* v0s = aod->GetV0s();
 388                 new (fgAODV0s) TClonesArray(*v0s);
 389             }
 390             if ((handler->NeedsTrackletsBranchReplication()) && (fgAODTracklets))
 391             {
 392               *fgAODTracklets = *aod->GetTracklets();
 393             }
 394             if ((handler->NeedsPMDClustersBranchReplication()) && (fgAODPMDClusters))
 395             {
 396                 TClonesArray* pmdClusters = aod->GetPmdClusters();
 397                 new (fgAODPMDClusters) TClonesArray(*pmdClusters);
 398             }
 399             if ((handler->NeedsJetsBranchReplication() || (merging &&aodH->GetMergeTracks())) && (fgAODJets))
 400             {
 401                 TClonesArray* jets = aod->GetJets();
 402                 new (fgAODJets) TClonesArray(*jets);
 403             }
 404             if ((handler->NeedsFMDClustersBranchReplication()) && (fgAODFMDClusters))
 405             {
 406                 TClonesArray* fmdClusters = aod->GetFmdClusters();
 407                 new (fgAODFMDClusters) TClonesArray(*fmdClusters);
 408             }
 409             if ((handler->NeedsCaloClustersBranchReplication() ||
 410                  (merging && (aodH->GetMergeEMCALClusters() || aodH->GetMergePHOSClusters())))
 411                 && (fgAODCaloClusters))
 412             {
 413                 TClonesArray* caloClusters = aod->GetCaloClusters();
 414                 new (fgAODCaloClusters) TClonesArray(*caloClusters);
 415             }
 416
 417             if ((handler->NeedsMCParticlesBranchReplication() || merging) && (fgAODMCParticles))
 418             {
 419                 TClonesArray* mcParticles = (TClonesArray*) (aod->FindListObject("mcparticles"));
 420                 if( mcParticles )
 421                   new (fgAODMCParticles) TClonesArray(*mcParticles);
 422             }
 423
 424             if ((handler->NeedsDimuonsBranchReplication() || (merging && aodH->GetMergeTracks())) && (fgAODDimuons))
 425             {
 426                 fgAODDimuons->Clear();
 427                 TClonesArray& dimuons = *fgAODDimuons;
 428                 TClonesArray& tracksnew = *fgAODTracks;
 429
 430                 Int_t nMuonTrack[100];
 431                 for(Int_t imuon = 0; imuon < 100; imuon++) nMuonTrack[imuon] = 0;
 432                 Int_t nMuons=0;
 433                 for(Int_t ii=0; ii < fgAODTracks->GetEntries(); ii++){
 434                     AliAODTrack *track = (AliAODTrack*) fgAODTracks->At(ii);
 435                     if(track->IsMuonTrack()) {
 436                         nMuonTrack[nMuons]= ii;
 437                         nMuons++;
 438                     }
 439                 }
 440                 Int_t jDimuons=0;
 441                 if(nMuons >= 2){
 442                     for(Int_t i = 0; i < nMuons; i++){
 443                         Int_t index0 = nMuonTrack[i];
 444                         for(Int_t j = i+1; j < nMuons; j++){
 445                             Int_t index1 = nMuonTrack[j];
 446                             tracksnew.At(index0)->ResetBit(kIsReferenced);
 447                             tracksnew.At(index0)->SetUniqueID(0);
 448                             tracksnew.At(index1)->ResetBit(kIsReferenced);
 449                             tracksnew.At(index1)->SetUniqueID(0);
 450                             new(dimuons[jDimuons++]) AliAODDimuon(tracksnew.At(index0),tracksnew.At(index1));
 451                         }
 452                     }
 453                 }
 454             }
 455             // Additional merging if needed
 456             if (merging) {
 457               Int_t nc;
 458
 459                 // mcParticles
 460                 TClonesArray* mcparticles = (TClonesArray*) ((aodH->GetEventToMerge())->FindListObject("mcparticles"));
 461                 if( mcparticles ){
 462                   Int_t npart = mcparticles->GetEntries();
 463                   nc = fgAODMCParticles->GetEntries();
 464
 465                   for (Int_t i = 0; i < npart; i++) {
 466                     AliAODMCParticle* particle = (AliAODMCParticle*) mcparticles->At(i);
 467                     new((*fgAODMCParticles)[nc++]) AliAODMCParticle(*particle);
 468                   }
 469                 }
 470
 471                 // tracks
 472                 TClonesArray* tracks = aodH->GetEventToMerge()->GetTracks();
 473                 if(tracks && aodH->GetMergeTracks()){
 474                   Int_t ntr = tracks->GetEntries();
 475                   nc  = fgAODTracks->GetEntries();
 476                   for (Int_t i = 0; i < ntr; i++) {
 477                     AliAODTrack*    track = (AliAODTrack*) tracks->At(i);
 478                     AliAODTrack* newtrack = new((*fgAODTracks)[nc++]) AliAODTrack(*track);
 479                     newtrack->SetLabel(newtrack->GetLabel() + fgAODMCParticles->GetEntries());
 480                   }
 481
 482                   for (Int_t i = 0; i < nc; i++)
 483                     {
 484                       AliAODTrack* track = (AliAODTrack*) fgAODTracks->At(i);
 485                       track->ResetBit(kIsReferenced);
 486                       track->SetUniqueID(0);
 487                     }
 488                 }
 489
 490                 // clusters
 491                 TClonesArray* clusters = aodH->GetEventToMerge()->GetCaloClusters();
 492                 if( clusters  && (aodH->GetMergeEMCALClusters() || aodH->GetMergePHOSClusters())) {
 493                   Int_t ncl  = clusters->GetEntries();
 494                   nc         =  fgAODCaloClusters->GetEntries();
 495                   for (Int_t i = 0; i < ncl; i++) {
 496                     AliAODCaloCluster*    cluster = (AliAODCaloCluster*) clusters->At(i);
 497                     if(cluster->IsEMCAL() && !aodH->GetMergeEMCALClusters() ) continue;
 498                     if(cluster->IsPHOS()  && !aodH->GetMergePHOSClusters()  ) continue;
 499                     new((*fgAODCaloClusters)[nc++]) AliAODCaloCluster(*cluster);
 500                   }
 501                 }
 502
 503                 // EMCAL cells
 504                 //*fgAODEmcalCells =  *(aod->GetEMCALCells()); // This will be valid after 10.Mar.2011.
 505                 if(aodH->GetMergeEMCALCells()) {
 506                     AliAODCaloCells* copycells = aod->GetEMCALCells();
 507                     fgAODEmcalCells->CreateContainer(copycells->GetNumberOfCells());
 508                     nc  = copycells->GetNumberOfCells();
 509                     while( nc-- ){ fgAODEmcalCells->SetCell(nc,copycells->GetCellNumber(nc),copycells->GetAmplitude(nc)); }
 510
 511                     AliAODCaloCells* cellsA = aodH->GetEventToMerge()->GetEMCALCells();
 512                     if( cellsA ){
 513                         Int_t ncells  = cellsA->GetNumberOfCells();
 514                         nc = fgAODEmcalCells->GetNumberOfCells();
 515                         for (Int_t i  = 0; i < ncells; i++) {
 516                             Int_t cn  = cellsA->GetCellNumber(i);
 517                             Int_t pos = fgAODEmcalCells->GetCellPosition(cn);
 518                             if (pos >= 0) {
 519                                 Double_t amp = cellsA->GetAmplitude(i) + fgAODEmcalCells->GetAmplitude(pos);
 520                                 fgAODEmcalCells->SetCell(pos, cn, amp);
 521                             } else {
 522                                 AliAODCaloCells* copycells1 = new AliAODCaloCells(*fgAODEmcalCells);
 523                                 fgAODEmcalCells->CreateContainer(nc+1);
 524                                 Int_t nn = copycells1->GetNumberOfCells();
 525                                 while( nn-- ){ fgAODEmcalCells->SetCell(nn,copycells1->GetCellNumber(nn),copycells1->GetAmplitude(nn)); }
 526                                 fgAODEmcalCells->SetCell(nc++,cn,cellsA->GetAmplitude(i));
 527                                 delete copycells1;
 528                             }
 529                         }
 530                         fgAODEmcalCells->Sort();
 531                     }
 532                 } // merge emcal cells
 533
 534
 535                 // PHOS cells
 536                 //*fgAODPhosCells =  *(aod->GetPHOSCells()); // This will be valid after 10.Mar.2011.
 537                 if(aodH->GetMergePHOSCells()) {
 538                     AliAODCaloCells* copycells = aod->GetPHOSCells();
 539                     fgAODPhosCells->CreateContainer(copycells->GetNumberOfCells());
 540                     nc  = copycells->GetNumberOfCells();
 541                     while( nc-- ){ fgAODPhosCells->SetCell(nc,copycells->GetCellNumber(nc),copycells->GetAmplitude(nc)); }
 542                     AliAODCaloCells* cellsP = aodH->GetEventToMerge()->GetPHOSCells();
 543                     if( cellsP ){
 544                         Int_t ncellsP  = cellsP->GetNumberOfCells();
 545                         nc = fgAODPhosCells->GetNumberOfCells();
 546
 547                         for (Int_t i  = 0; i < ncellsP; i++) {
 548                             Int_t cn  = cellsP->GetCellNumber(i);
 549                             Int_t pos = fgAODPhosCells->GetCellPosition(cn);
 550                             if (pos >= 0) {
 551                                 Double_t amp = cellsP->GetAmplitude(i) + fgAODPhosCells->GetAmplitude(pos);
 552                                 fgAODPhosCells->SetCell(pos, cn, amp);
 553                             } else {
 554                                 AliAODCaloCells* copycells1 = new AliAODCaloCells(*fgAODPhosCells);
 555                                 fgAODPhosCells->CreateContainer(nc+1);
 556                                 Int_t nn = copycells1->GetNumberOfCells();
 557                                 while( nn-- ){ fgAODPhosCells->SetCell(nn,copycells1->GetCellNumber(nn),copycells1->GetAmplitude(nn)); }
 558                                 fgAODPhosCells->SetCell(nc++,cn,cellsP->GetAmplitude(i));
 559                                 delete copycells1;
 560                             }
 561                         }
 562                         fgAODPhosCells->Sort();
 563                     }
 564                 } // Merge PHOS Cells
 565
 566             } // merging
 567
 568             handler->SetAODIsReplicated();
 569         }
 570     }
 571
 572
 573 // Call the user analysis
 574     if (!fMCEventHandler) {
 575         if (isSelected)
 576             UserExec(option);
 577     } else {
 578         if (isSelected && (fMCEventHandler->InitOk()))
 579             UserExec(option);
 580     }
 581
 582 // Added protection in case the derived task is not an AOD producer.
 583     AliAnalysisDataSlot *out0 = GetOutputSlot(0);
 584     if (out0 && out0->IsConnected()) PostData(0, fTreeA);
 585
 586     DisconnectMultiHandler();
 587 }
 588
 589 const char* AliAnalysisTaskSE::CurrentFileName()
 590 {
 591 // Returns the current file name
 592     if( fInputHandler )
 593       return fInputHandler->GetTree()->GetCurrentFile()->GetName();
 594     else if( fMCEvent )
 595       return ((AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()))->TreeK()->GetCurrentFile()->GetName();
 596     else return "";
 597 }
 598
 599 void AliAnalysisTaskSE::AddAODBranch(const char* cname, void* addobj, const char *fname)
 600 {
 601     // Add a new branch to the aod tree
 602     AliAODHandler* handler = dynamic_cast<AliAODHandler*>
 603         ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 604     if (handler) {
 605         handler->AddBranch(cname, addobj, fname);
 606     }
 607 }
 608
 609 Bool_t AliAnalysisTaskSE::IsStandardAOD() const
 610 {
 611 // Check if the output AOD handler is configured for standard or delta AOD.
 612 // Users should first check that AODEvent() returns non-null.
 613     AliAODHandler* handler = dynamic_cast<AliAODHandler*>
 614          ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 615     if (!handler) {
 616        Error("IsStandardAOD", "No AOD handler. Please use AODEvent() to check this first");
 617        return kTRUE;
 618     }
 619     return handler->IsStandard();
 620 }
 621
 622 Bool_t AliAnalysisTaskSE::Notify()
 623 {
 624     return (UserNotify());
 625 }
 626
 627 const AliEventTag *AliAnalysisTaskSE::EventTag() const
 628 {
 629 // Returns tag for the current event, if any. The return value should always be checked by the user.
 630    if (!fInputHandler) {
 631       Error("EventTag", "Input handler not yet available. Call this in UserExec");
 632       return NULL;
 633    }
 634    return fInputHandler->GetEventTag();
 635 }
 636
 637 void AliAnalysisTaskSE::LoadBranches() const
 638 {
 639 // Load all branches declared in fBranchNames data member of the parent class.
 640 // Should be called in UserExec.
 641   if (!fInputHandler) {
 642      Error("LoadBranches", "Input handler not available yet. Call this in UserExec");
 643      return;
 644   }
 645   AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
 646   if (mgr->GetAutoBranchLoading()) return;
 647   TString taskbranches;
 648   GetBranches(fInputHandler->GetDataType(), taskbranches);
 649   if (taskbranches.IsNull()) return;
 650   TObjArray *arr = taskbranches.Tokenize(",");
 651   TIter next(arr);
 652   TObject *obj;
 653   while ((obj=next())) mgr->LoadBranch(obj->GetName());
 654 }
 655
 656
 657 //_________________________________________________________________________________________________
 658 void AliAnalysisTaskSE::ConnectMultiHandler()
 659 {
 660    //
 661    // Connect MultiHandler
 662    //
 663    fInputHandler = (AliInputEventHandler *)((AliAnalysisManager::GetAnalysisManager())->GetInputEventHandler());
 664    fMultiInputHandler = dynamic_cast<AliMultiInputEventHandler *>(fInputHandler);
 665    if (fMultiInputHandler) {
 666       fInputHandler = dynamic_cast<AliInputEventHandler *>(fMultiInputHandler->GetFirstInputEventHandler());
 667       fMCEventHandler = dynamic_cast<AliMCEventHandler *>(fMultiInputHandler->GetFirstMCEventHandler());
 668    } else {
 669       fMCEventHandler = dynamic_cast<AliMCEventHandler *>((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler());
 670    }
 671    if (fMCEventHandler) fMCEvent = fMCEventHandler->MCEvent();
 672 }
 673
 674 //_________________________________________________________________________________________________
 675 void AliAnalysisTaskSE::DisconnectMultiHandler()
 676 {
 677    //
 678    // Disconnect MultiHandler
 679    //
 680    if (fMultiInputHandler) fInputHandler = fMultiInputHandler;
 681 }