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