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    for (Int_t islot=1; islot<fNoutputs; islot++) {
 167       coutput = GetOutputSlot(islot)->GetContainer();
 168       if (!coutput->GetData()) return kFALSE;
 169    }
 170    return kTRUE;
 171 }
 172
 173 void AliAnalysisTaskSE::ConnectInputData(Option_t* /*option*/)
 174 {
 175 // Connect the input data
 176     if (fDebug > 1) printf("AnalysisTaskSE::ConnectInputData() \n");
 177
 178    // Connect input handlers (multi input handler is handled)
 179    ConnectMultiHandler();
 180
 181     if (fInputHandler) {
 182         if ((fInputHandler->GetTree())->GetBranch("ESDfriend."))
 183             fESDfriend = ((AliESDInputHandler*)fInputHandler)->GetESDfriend();
 184
 185         fInputEvent = fInputHandler->GetEvent();
 186     } else if( fMCEvent ) {
 187          AliWarning("No Input Event Handler connected, only MC Truth Event Handler") ;
 188     } else {
 189          AliError("No Input Event Handler connected") ;
 190          return ;
 191     }
 192     // Disconnect multi handler
 193     DisconnectMultiHandler();
 194 }
 195
 196 void AliAnalysisTaskSE::CreateOutputObjects()
 197 {
 198 // Create the output container
 199 //
 200 //  Default AOD
 201     if (fDebug > 1) printf("AnalysisTaskSE::CreateOutPutData() \n");
 202
 203     AliAODHandler* handler = dynamic_cast<AliAODHandler*>
 204          ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 205
 206     Bool_t merging = kFALSE;
 207     AliAODInputHandler* aodIH = static_cast<AliAODInputHandler*>((AliAnalysisManager::GetAnalysisManager())->GetInputEventHandler());
 208     if (aodIH) {
 209         if (aodIH->GetMergeEvents()) merging = kTRUE;
 210     }
 211
 212
 213     // Check if AOD replication has been required
 214
 215     if (handler) {
 216         fOutputAOD   = handler->GetAOD();
 217         fTreeA = handler->GetTree();
 218         if (fOutputAOD && !(handler->IsStandard())) {
 219             if ((handler->NeedsHeaderReplication()) && !(fgAODHeader))
 220                 {
 221                  if (fDebug > 1) AliInfo("Replicating header");
 222                  fgAODHeader = new AliAODHeader;
 223                  handler->AddBranch("AliAODHeader", &fgAODHeader);
 224                 }
 225             if ((handler->NeedsTracksBranchReplication() || merging) && !(fgAODTracks))
 226             {
 227                 if (fDebug > 1) AliInfo("Replicating track branch\n");
 228                 fgAODTracks = new TClonesArray("AliAODTrack",500);
 229                 fgAODTracks->SetName("tracks");
 230                 handler->AddBranch("TClonesArray", &fgAODTracks);
 231             }
 232             if ((handler->NeedsVerticesBranchReplication() || merging) && !(fgAODVertices))
 233             {
 234                 if (fDebug > 1) AliInfo("Replicating vertices branch\n");
 235                 fgAODVertices = new TClonesArray("AliAODVertex",500);
 236                 fgAODVertices->SetName("vertices");
 237                 handler->AddBranch("TClonesArray", &fgAODVertices);
 238             }
 239             if ((handler->NeedsV0sBranchReplication()) && !(fgAODV0s))
 240             {
 241                 if (fDebug > 1) AliInfo("Replicating V0s branch\n");
 242                 fgAODV0s = new TClonesArray("AliAODv0",500);
 243                 fgAODV0s->SetName("v0s");
 244                 handler->AddBranch("TClonesArray", &fgAODV0s);
 245             }
 246             if ((handler->NeedsTrackletsBranchReplication()) && !(fgAODTracklets))
 247             {
 248                 if (fDebug > 1) AliInfo("Replicating Tracklets branch\n");
 249                 fgAODTracklets = new AliAODTracklets("tracklets","tracklets");
 250                 handler->AddBranch("AliAODTracklets", &fgAODTracklets);
 251             }
 252             if ((handler->NeedsPMDClustersBranchReplication()) && !(fgAODPMDClusters))
 253             {
 254                 if (fDebug > 1) AliInfo("Replicating PMDClusters branch\n");
 255                 fgAODPMDClusters = new TClonesArray("AliAODPmdCluster",500);
 256                 fgAODPMDClusters->SetName("pmdClusters");
 257                 handler->AddBranch("TClonesArray", &fgAODPMDClusters);
 258             }
 259             if ((handler->NeedsJetsBranchReplication() || merging) && !(fgAODJets))
 260             {
 261                 if (fDebug > 1) AliInfo("Replicating Jets branch\n");
 262                 fgAODJets = new TClonesArray("AliAODJet",500);
 263                 fgAODJets->SetName("jets");
 264                 handler->AddBranch("TClonesArray", &fgAODJets);
 265             }
 266             if ((handler->NeedsFMDClustersBranchReplication()) && !(fgAODFMDClusters))
 267             {
 268                 AliInfo("Replicating FMDClusters branch\n");
 269                 fgAODFMDClusters = new TClonesArray("AliAODFmdCluster",500);
 270                 fgAODFMDClusters->SetName("fmdClusters");
 271                 handler->AddBranch("TClonesArray", &fgAODFMDClusters);
 272             }
 273             if ((handler->NeedsCaloClustersBranchReplication() || merging) && !(fgAODCaloClusters))
 274             {
 275                 if (fDebug > 1) AliInfo("Replicating CaloClusters branch\n");
 276                 fgAODCaloClusters = new TClonesArray("AliAODCaloCluster",500);
 277                 fgAODCaloClusters->SetName("caloClusters");
 278                 handler->AddBranch("TClonesArray", &fgAODCaloClusters);
 279
 280                 fgAODEmcalCells = new AliAODCaloCells();
 281                 fgAODEmcalCells->SetName("emcalCells");
 282                 handler->AddBranch("AliAODCaloCells", &fgAODEmcalCells);
 283
 284                 fgAODPhosCells = new AliAODCaloCells();
 285                 fgAODPhosCells->SetName("phosCells");
 286                 handler->AddBranch("AliAODCaloCells", &fgAODPhosCells);
 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     UserCreateOutputObjects();
 308 }
 309
 310 void AliAnalysisTaskSE::Exec(Option_t* option)
 311 {
 312 //
 313 // Exec analysis of one event
 314
 315     ConnectMultiHandler();
 316
 317     if ( fDebug >= 10)
 318       printf("Task is active %5d\n", IsActive());
 319
 320     if (fDebug > 1) AliInfo("AliAnalysisTaskSE::Exec() \n");
 321 //
 322     AliAODHandler* handler = dynamic_cast<AliAODHandler*>
 323         ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 324
 325     AliAODInputHandler* aodH = dynamic_cast<AliAODInputHandler*>(fInputHandler);
 326 //
 327 // Was event selected ? If no event selection mechanism, the event SHOULD be selected (AG)
 328     UInt_t isSelected = AliVEvent::kAny;
 329     if( fInputHandler && fInputHandler->GetEventSelection()) {
 330       // Get the actual offline trigger mask for the event and AND it with the
 331       // requested mask. If no mask requested select by default the event.
 332       if (fOfflineTriggerMask)
 333          isSelected = fOfflineTriggerMask & fInputHandler->IsEventSelected();
 334     }
 335 //  Functionality below moved in the filter tasks (AG)
 336 //    if (handler) handler->SetFillAOD(isSelected);
 337
 338     if( fInputHandler ) {
 339         fEntry = fInputHandler->GetReadEntry();
 340         fESDfriend = ((AliESDInputHandler*)fInputHandler)->GetESDfriend();
 341     }
 342
 343
 344 // Notify the change of run number
 345     if (InputEvent() && (InputEvent()->GetRunNumber() != fCurrentRunNumber)) {
 346         fCurrentRunNumber = InputEvent()->GetRunNumber();
 347         NotifyRun();
 348     }
 349
 350     else if( fMCEvent )
 351        fEntry = fMCEvent->Header()->GetEvent();
 352     if ( !((Entry()-1)%100) && fDebug > 0)
 353          AliInfo(Form("%s ----> Processing event # %lld", CurrentFileName(), Entry()));
 354
 355
 356
 357
 358     if (handler && aodH) {
 359         fMCEvent = aodH->MCEvent();
 360         Bool_t merging = aodH->GetMergeEvents();
 361         AliAODEvent* aod = dynamic_cast<AliAODEvent*>(InputEvent());
 362
 363         if (aod && !(handler->IsStandard()) && !(handler->AODIsReplicated())) {
 364             if ((handler->NeedsHeaderReplication()) && (fgAODHeader))
 365             {
 366               // copy the contents by assigment
 367               *fgAODHeader =  *(aod->GetHeader());
 368             }
 369             if ((handler->NeedsTracksBranchReplication() || merging) && (fgAODTracks))
 370             {
 371                 TClonesArray* tracks = aod->GetTracks();
 372                 new (fgAODTracks) TClonesArray(*tracks);
 373             }
 374             if ((handler->NeedsVerticesBranchReplication() || merging) && (fgAODVertices))
 375             {
 376                 TClonesArray* vertices = aod->GetVertices();
 377                 new (fgAODVertices) TClonesArray(*vertices);
 378             }
 379             if ((handler->NeedsV0sBranchReplication()) && (fgAODV0s))
 380             {
 381                 TClonesArray* v0s = aod->GetV0s();
 382                 new (fgAODV0s) TClonesArray(*v0s);
 383             }
 384             if ((handler->NeedsTrackletsBranchReplication()) && (fgAODTracklets))
 385             {
 386               *fgAODTracklets = *aod->GetTracklets();
 387             }
 388             if ((handler->NeedsPMDClustersBranchReplication()) && (fgAODPMDClusters))
 389             {
 390                 TClonesArray* pmdClusters = aod->GetPmdClusters();
 391                 new (fgAODPMDClusters) TClonesArray(*pmdClusters);
 392             }
 393             if ((handler->NeedsJetsBranchReplication() || merging) && (fgAODJets))
 394             {
 395                 TClonesArray* jets = aod->GetJets();
 396                 new (fgAODJets) TClonesArray(*jets);
 397             }
 398             if ((handler->NeedsFMDClustersBranchReplication()) && (fgAODFMDClusters))
 399             {
 400                 TClonesArray* fmdClusters = aod->GetFmdClusters();
 401                 new (fgAODFMDClusters) TClonesArray(*fmdClusters);
 402             }
 403             if ((handler->NeedsCaloClustersBranchReplication() || merging) && (fgAODCaloClusters))
 404             {
 405                 TClonesArray* caloClusters = aod->GetCaloClusters();
 406                 new (fgAODCaloClusters) TClonesArray(*caloClusters);
 407             }
 408
 409             if ((handler->NeedsMCParticlesBranchReplication() || merging) && (fgAODMCParticles))
 410             {
 411                 TClonesArray* mcParticles = (TClonesArray*) (aod->FindListObject("mcparticles"));
 412                 new (fgAODMCParticles) TClonesArray(*mcParticles);
 413             }
 414
 415             if ((handler->NeedsDimuonsBranchReplication() || merging) && (fgAODDimuons))
 416             {
 417                 fgAODDimuons->Clear();
 418                 TClonesArray& dimuons = *fgAODDimuons;
 419                 TClonesArray& tracksnew = *fgAODTracks;
 420
 421                 Int_t nMuonTrack[100];
 422                 for(Int_t imuon = 0; imuon < 100; imuon++) nMuonTrack[imuon] = 0;
 423                 Int_t nMuons=0;
 424                 for(Int_t ii=0; ii < fgAODTracks->GetEntries(); ii++){
 425                     AliAODTrack *track = (AliAODTrack*) fgAODTracks->At(ii);
 426                     if(track->IsMuonTrack()) {
 427                         nMuonTrack[nMuons]= ii;
 428                         nMuons++;
 429                     }
 430                 }
 431                 Int_t jDimuons=0;
 432                 if(nMuons >= 2){
 433                     for(Int_t i = 0; i < nMuons; i++){
 434                         Int_t index0 = nMuonTrack[i];
 435                         for(Int_t j = i+1; j < nMuons; j++){
 436                             Int_t index1 = nMuonTrack[j];
 437                             tracksnew.At(index0)->ResetBit(kIsReferenced);
 438                             tracksnew.At(index0)->SetUniqueID(0);
 439                             tracksnew.At(index1)->ResetBit(kIsReferenced);
 440                             tracksnew.At(index1)->SetUniqueID(0);
 441                             new(dimuons[jDimuons++]) AliAODDimuon(tracksnew.At(index0),tracksnew.At(index1));
 442                         }
 443                     }
 444                 }
 445             }
 446
 447             // Additional merging if needed
 448             if (merging) {
 449                 // mcParticles
 450                 TClonesArray* mcparticles = (TClonesArray*) ((aodH->GetEventToMerge())->FindListObject("mcparticles"));
 451                 Int_t npart = mcparticles->GetEntries();
 452                 Int_t nc = fgAODMCParticles->GetEntries();
 453                 Int_t nc0 = nc;
 454
 455                 for (Int_t i = 0; i < npart; i++) {
 456                     AliAODMCParticle* particle = (AliAODMCParticle*) mcparticles->At(i);
 457                     new((*fgAODMCParticles)[nc++]) AliAODMCParticle(*particle);
 458                 }
 459
 460                 // tracks
 461                 TClonesArray* tracks = aodH->GetEventToMerge()->GetTracks();
 462                 Int_t ntr = tracks->GetEntries();
 463                 nc  = fgAODTracks->GetEntries();
 464                 for (Int_t i = 0; i < ntr; i++) {
 465                     AliAODTrack*    track = (AliAODTrack*) tracks->At(i);
 466                     AliAODTrack* newtrack = new((*fgAODTracks)[nc++]) AliAODTrack(*track);
 467                     newtrack->SetLabel(newtrack->GetLabel() + nc0);
 468                 }
 469
 470                 for (Int_t i = 0; i < nc; i++)
 471                 {
 472                     AliAODTrack* track = (AliAODTrack*) fgAODTracks->At(i);
 473                     track->ResetBit(kIsReferenced);
 474                     track->SetUniqueID(0);
 475                 }
 476
 477
 478                 // clusters
 479                 TClonesArray* clusters = aodH->GetEventToMerge()->GetCaloClusters();
 480                 Int_t ncl  = clusters->GetEntries();
 481                 nc         =  fgAODCaloClusters->GetEntries();
 482                 for (Int_t i = 0; i < ncl; i++) {
 483                     AliAODCaloCluster*    cluster = (AliAODCaloCluster*) clusters->At(i);
 484                     new((*fgAODCaloClusters)[nc++]) AliAODCaloCluster(*cluster);
 485                 }
 486                 // cells
 487                 AliAODCaloCells* cellsA = aodH->GetEventToMerge()->GetEMCALCells();
 488                 Int_t ncells  = cellsA->GetNumberOfCells();
 489                 nc = fgAODEmcalCells->GetNumberOfCells();
 490
 491                 for (Int_t i  = 0; i < ncells; i++) {
 492                     Int_t cn  = cellsA->GetCellNumber(i);
 493                     Int_t pos = fgAODEmcalCells->GetCellPosition(cn);
 494                     if (pos >= 0) {
 495                         Double_t amp = cellsA->GetAmplitude(i) + fgAODEmcalCells->GetAmplitude(pos);
 496                         fgAODEmcalCells->SetCell(pos, cn, amp);
 497                     } else {
 498                         Double_t amp = cellsA->GetAmplitude(i);
 499                         fgAODEmcalCells->SetCell(nc++, cn, amp);
 500                         fgAODEmcalCells->Sort();
 501                     }
 502                 }
 503
 504
 505             } // merging
 506
 507             handler->SetAODIsReplicated();
 508         }
 509     }
 510
 511 // Call the user analysis
 512     if (!fMCEventHandler) {
 513         if (isSelected)
 514             UserExec(option);
 515     } else {
 516         if (isSelected && (fMCEventHandler->InitOk()))
 517             UserExec(option);
 518     }
 519
 520 // Added protection in case the derived task is not an AOD producer.
 521     AliAnalysisDataSlot *out0 = GetOutputSlot(0);
 522     if (out0 && out0->IsConnected()) PostData(0, fTreeA);
 523
 524     DisconnectMultiHandler();
 525 }
 526
 527 const char* AliAnalysisTaskSE::CurrentFileName()
 528 {
 529 // Returns the current file name
 530     if( fInputHandler )
 531       return fInputHandler->GetTree()->GetCurrentFile()->GetName();
 532     else if( fMCEvent )
 533       return ((AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()))->TreeK()->GetCurrentFile()->GetName();
 534     else return "";
 535 }
 536
 537 void AliAnalysisTaskSE::AddAODBranch(const char* cname, void* addobj, const char *fname)
 538 {
 539     // Add a new branch to the aod tree
 540     AliAODHandler* handler = dynamic_cast<AliAODHandler*>
 541         ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 542     if (handler) {
 543         handler->AddBranch(cname, addobj, fname);
 544     }
 545 }
 546
 547 Bool_t AliAnalysisTaskSE::IsStandardAOD() const
 548 {
 549 // Check if the output AOD handler is configured for standard or delta AOD.
 550 // Users should first check that AODEvent() returns non-null.
 551     AliAODHandler* handler = dynamic_cast<AliAODHandler*>
 552          ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 553     if (!handler) {
 554        Error("IsStandardAOD", "No AOD handler. Please use AODEvent() to check this first");
 555        return kTRUE;
 556     }
 557     return handler->IsStandard();
 558 }
 559
 560 Bool_t AliAnalysisTaskSE::Notify()
 561 {
 562     return (UserNotify());
 563 }
 564
 565 const AliEventTag *AliAnalysisTaskSE::EventTag() const
 566 {
 567 // Returns tag for the current event, if any. The return value should always be checked by the user.
 568    if (!fInputHandler) {
 569       Error("EventTag", "Input handler not yet available. Call this in UserExec");
 570       return NULL;
 571    }
 572    return fInputHandler->GetEventTag();
 573 }
 574
 575 void AliAnalysisTaskSE::LoadBranches() const
 576 {
 577 // Load all branches declared in fBranchNames data member of the parent class.
 578 // Should be called in UserExec.
 579   if (!fInputHandler) {
 580      Error("LoadBranches", "Input handler not available yet. Call this in UserExec");
 581      return;
 582   }
 583   AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
 584   if (mgr->GetAutoBranchLoading()) return;
 585   TString taskbranches;
 586   GetBranches(fInputHandler->GetDataType(), taskbranches);
 587   if (taskbranches.IsNull()) return;
 588   TObjArray *arr = taskbranches.Tokenize(",");
 589   TIter next(arr);
 590   TObject *obj;
 591   while ((obj=next())) mgr->LoadBranch(obj->GetName());
 592 }
 593
 594
 595 //_________________________________________________________________________________________________
 596 void AliAnalysisTaskSE::ConnectMultiHandler()
 597 {
 598    //
 599    // Connect MultiHandler
 600    //
 601    fInputHandler = (AliInputEventHandler *)((AliAnalysisManager::GetAnalysisManager())->GetInputEventHandler());
 602    fMultiInputHandler = dynamic_cast<AliMultiInputEventHandler *>(fInputHandler);
 603    if (fMultiInputHandler) {
 604       fInputHandler = dynamic_cast<AliInputEventHandler *>(fMultiInputHandler->GetFirstInputEventHandler());
 605       fMCEventHandler = dynamic_cast<AliMCEventHandler *>(fMultiInputHandler->GetFirstMCEventHandler());
 606    } else {
 607       fMCEventHandler = dynamic_cast<AliMCEventHandler *>((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler());
 608    }
 609    if (fMCEventHandler) fMCEvent = fMCEventHandler->MCEvent();
 610 }
 611
 612 //_________________________________________________________________________________________________
 613 void AliAnalysisTaskSE::DisconnectMultiHandler()
 614 {
 615    //
 616    // Disconnect MultiHandler
 617    //
 618    if (fMultiInputHandler) fInputHandler = fMultiInputHandler;
 619 }