]> git.uio.no Git - u/mrichter/AliRoot.git/blobdiff - ANALYSIS/AliAnalysisTaskSE.cxx
preserve bit 8 for TPC only tracks
[u/mrichter/AliRoot.git] / ANALYSIS / AliAnalysisTaskSE.cxx
index e9df19c5abc88cbe2f16ab8114de802abe7dab6b..7f29edc1e4dde26fa73508981999feab1546db30 100644 (file)
 
 #include "AliAnalysisTaskSE.h"
 #include "AliAnalysisManager.h"
+#include "AliAnalysisCuts.h"
 #include "AliAnalysisDataSlot.h"
+#include "AliAnalysisDataContainer.h"
+
 #include "AliESDEvent.h"
+#include "AliESDfriend.h"
 #include "AliESD.h"
 #include "AliAODEvent.h"
 #include "AliAODHeader.h"
 #include "AliAODInputHandler.h"
 #include "AliMCEventHandler.h"
 #include "AliInputEventHandler.h"
+#include "AliMultiInputEventHandler.h"
+#include "AliESDInputHandler.h"
 #include "AliMCEvent.h"
 #include "AliStack.h"
 #include "AliLog.h"
+#include "AliAODDimuon.h"
 
 
 ClassImp(AliAnalysisTaskSE)
 
 ////////////////////////////////////////////////////////////////////////
-AliAODHeader*    AliAnalysisTaskSE::fgAODHeader        = NULL;
-TClonesArray*    AliAnalysisTaskSE::fgAODTracks        = NULL;
-TClonesArray*    AliAnalysisTaskSE::fgAODVertices      = NULL;
-TClonesArray*    AliAnalysisTaskSE::fgAODV0s           = NULL;
-TClonesArray*    AliAnalysisTaskSE::fgAODPMDClusters   = NULL;
-TClonesArray*    AliAnalysisTaskSE::fgAODJets          = NULL;
-TClonesArray*    AliAnalysisTaskSE::fgAODFMDClusters   = NULL;
-TClonesArray*    AliAnalysisTaskSE::fgAODCaloClusters  = NULL;
-TClonesArray*    AliAnalysisTaskSE::fgAODMCParticles   = NULL;
-AliAODTracklets* AliAnalysisTaskSE::fgAODTracklets     = NULL;
-AliAODCaloCells* AliAnalysisTaskSE::fgAODEmcalCells    = NULL;
-AliAODCaloCells* AliAnalysisTaskSE::fgAODPhosCells     = NULL;
-
+AliAODHeader*    AliAnalysisTaskSE::fgAODHeader         = NULL;
+TClonesArray*    AliAnalysisTaskSE::fgAODTracks         = NULL;
+TClonesArray*    AliAnalysisTaskSE::fgAODVertices       = NULL;
+TClonesArray*    AliAnalysisTaskSE::fgAODV0s            = NULL;
+TClonesArray*    AliAnalysisTaskSE::fgAODPMDClusters    = NULL;
+TClonesArray*    AliAnalysisTaskSE::fgAODJets           = NULL;
+TClonesArray*    AliAnalysisTaskSE::fgAODFMDClusters    = NULL;
+TClonesArray*    AliAnalysisTaskSE::fgAODCaloClusters   = NULL;
+TClonesArray*    AliAnalysisTaskSE::fgAODMCParticles    = NULL;
+AliAODTracklets* AliAnalysisTaskSE::fgAODTracklets      = NULL;
+AliAODCaloCells* AliAnalysisTaskSE::fgAODEmcalCells     = NULL;
+AliAODCaloCells* AliAnalysisTaskSE::fgAODPhosCells      = NULL;
+TClonesArray*    AliAnalysisTaskSE::fgAODDimuons        = NULL;
 
 AliAnalysisTaskSE::AliAnalysisTaskSE():
     AliAnalysisTask(),
     fDebug(0),
     fEntry(0),
     fInputEvent(0x0),
+    fESDfriend(0x0),
     fInputHandler(0x0),
     fOutputAOD(0x0),
     fMCEvent(0x0),
-    fTreeA(0x0)
+    fTreeA(0x0),
+    fCurrentRunNumber(-1),
+    fHistosQA(0x0),
+    fOfflineTriggerMask(0),
+    fMultiInputHandler(0),
+    fMCEventHandler(0)
 {
   // Default constructor
 }
@@ -77,10 +90,16 @@ AliAnalysisTaskSE::AliAnalysisTaskSE(const char* name):
     fDebug(0),
     fEntry(0),
     fInputEvent(0x0),
+    fESDfriend(0x0),
     fInputHandler(0x0),
     fOutputAOD(0x0),
     fMCEvent(0x0),
-    fTreeA(0x0)
+    fTreeA(0x0),
+    fCurrentRunNumber(-1),
+    fHistosQA(0x0),
+    fOfflineTriggerMask(0),
+    fMultiInputHandler(0),
+    fMCEventHandler(0)
 {
   // Default constructor
     DefineInput (0, TChain::Class());
@@ -92,19 +111,29 @@ AliAnalysisTaskSE::AliAnalysisTaskSE(const AliAnalysisTaskSE& obj):
     fDebug(0),
     fEntry(0),
     fInputEvent(0x0),
+    fESDfriend(0x0),
     fInputHandler(0x0),
     fOutputAOD(0x0),
     fMCEvent(0x0),
-    fTreeA(0x0)
+    fTreeA(0x0),
+    fCurrentRunNumber(-1),
+    fHistosQA(0x0),
+    fOfflineTriggerMask(0),
+    fMultiInputHandler(obj.fMultiInputHandler),
+    fMCEventHandler(obj.fMCEventHandler)
 {
 // Copy constructor
-    fDebug        = obj.fDebug;
-    fEntry        = obj.fEntry;
-    fInputEvent   = obj.fInputEvent;
-    fInputHandler = obj.fInputHandler;
-    fOutputAOD    = obj.fOutputAOD;
-    fMCEvent      = obj.fMCEvent;
-    fTreeA        = obj.fTreeA;    
+    fDebug            = obj.fDebug;
+    fEntry            = obj.fEntry;
+    fInputEvent       = obj.fInputEvent;
+    fESDfriend        = obj.fESDfriend;
+    fInputHandler     = obj.fInputHandler;
+    fOutputAOD        = obj.fOutputAOD;
+    fMCEvent          = obj.fMCEvent;
+    fTreeA            = obj.fTreeA;    
+    fCurrentRunNumber = obj.fCurrentRunNumber;
+    fHistosQA         = obj.fHistosQA;
+
 }
 
 
@@ -112,43 +141,59 @@ AliAnalysisTaskSE& AliAnalysisTaskSE::operator=(const AliAnalysisTaskSE& other)
 {
 // Assignment
     AliAnalysisTask::operator=(other);
-    fDebug        = other.fDebug;
-    fEntry        = other.fEntry;
-    fInputEvent   = other.fInputEvent;
-    fInputHandler = other.fInputHandler;
-    fOutputAOD    = other.fOutputAOD;
-    fMCEvent      = other.fMCEvent;
-    fTreeA        = other.fTreeA;    
+    fDebug            = other.fDebug;
+    fEntry            = other.fEntry;
+    fInputEvent       = other.fInputEvent;
+    fESDfriend        = other.fESDfriend;
+    fInputHandler     = other.fInputHandler;
+    fOutputAOD        = other.fOutputAOD;
+    fMCEvent          = other.fMCEvent;
+    fTreeA            = other.fTreeA;    
+    fCurrentRunNumber = other.fCurrentRunNumber;
+    fHistosQA         = other.fHistosQA;
+    fOfflineTriggerMask = other.fOfflineTriggerMask;
+    fMultiInputHandler  = other.fMultiInputHandler;
+    fMCEventHandler     = other.fMCEventHandler;
     return *this;
 }
 
+//______________________________________________________________________________
+Bool_t AliAnalysisTaskSE::CheckPostData() const
+{
+// Checks if data was posted to all outputs defined by the task. If task does
+// not have output slots this returns always kTRUE.
+   AliAnalysisDataContainer *coutput;
+   AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
+   for (Int_t islot=1; islot<fNoutputs; islot++) {
+      coutput = GetOutputSlot(islot)->GetContainer();
+      if (!mgr->GetOutputs()->FindObject(coutput)) continue;
+      if (!coutput->GetData()) return kFALSE;
+   }
+   CheckOwnership();
+   return kTRUE;
+}
 
 void AliAnalysisTaskSE::ConnectInputData(Option_t* /*option*/)
 {
 // Connect the input data
     if (fDebug > 1) printf("AnalysisTaskSE::ConnectInputData() \n");
-//
-//  ESD
-//
-    fInputHandler = (AliInputEventHandler*) 
-         ((AliAnalysisManager::GetAnalysisManager())->GetInputEventHandler());
-//
-//  Monte Carlo
-//
-    AliMCEventHandler*    mcH = 0;
-    mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler());
-    if (mcH) {
-       fMCEvent = mcH->MCEvent();
-    } 
+
+   // Connect input handlers (multi input handler is handled)
+    ConnectMultiHandler();
     
     if (fInputHandler) {
-         fInputEvent = fInputHandler->GetEvent();
+       if ((fInputHandler->GetTree())->GetBranch("ESDfriend."))
+           fESDfriend = ((AliESDInputHandler*)fInputHandler)->GetESDfriend();
+
+       fInputEvent = fInputHandler->GetEvent();
     } else if( fMCEvent ) {
          AliWarning("No Input Event Handler connected, only MC Truth Event Handler") ; 
     } else {
          AliError("No Input Event Handler connected") ; 
          return ; 
     }
+    // Disconnect multi handler
+    DisconnectMultiHandler();
 }
 
 void AliAnalysisTaskSE::CreateOutputObjects()
@@ -158,7 +203,7 @@ void AliAnalysisTaskSE::CreateOutputObjects()
 //  Default AOD
     if (fDebug > 1) printf("AnalysisTaskSE::CreateOutPutData() \n");
 
-    AliAODHandler* handler = (AliAODHandler*) 
+    AliAODHandler* handler = dynamic_cast<AliAODHandler*> 
          ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
     
     Bool_t merging = kFALSE;
@@ -166,14 +211,13 @@ void AliAnalysisTaskSE::CreateOutputObjects()
     if (aodIH) {
        if (aodIH->GetMergeEvents()) merging = kTRUE;
     }
-    
+
     // Check if AOD replication has been required
-    
     if (handler) {
        fOutputAOD   = handler->GetAOD();
        fTreeA = handler->GetTree();
-       if (!(handler->IsStandard())) {
-           if ((handler->NeedsHeaderReplication()) && !(fgAODHeader)) 
+       if (fOutputAOD && !(handler->IsStandard())) {
+           if ((handler->NeedsHeaderReplication() || merging) && !(fgAODHeader)) 
                {
                 if (fDebug > 1) AliInfo("Replicating header");
                 fgAODHeader = new AliAODHeader;
@@ -234,13 +278,12 @@ void AliAnalysisTaskSE::CreateOutputObjects()
                fgAODCaloClusters->SetName("caloClusters");
                handler->AddBranch("TClonesArray", &fgAODCaloClusters);
 
-               fgAODEmcalCells = new AliAODCaloCells();
-               fgAODEmcalCells->SetName("emcalCells");
+               fgAODEmcalCells = new AliAODCaloCells("emcalCells","emcalCells",AliVCaloCells::kEMCALCell);
                handler->AddBranch("AliAODCaloCells", &fgAODEmcalCells);
 
-               fgAODPhosCells = new AliAODCaloCells();
-               fgAODPhosCells->SetName("phosCells");
+               fgAODPhosCells = new AliAODCaloCells("phosCells","phosCells",AliVCaloCells::kPHOSCell);
                handler->AddBranch("AliAODCaloCells", &fgAODPhosCells);
+               
            }
            if ((handler->NeedsMCParticlesBranchReplication() || merging) && !(fgAODMCParticles))         
            {   
@@ -249,154 +292,313 @@ void AliAnalysisTaskSE::CreateOutputObjects()
                fgAODMCParticles->SetName("mcparticles");
                handler->AddBranch("TClonesArray", &fgAODMCParticles);
            }
+           if ((handler->NeedsDimuonsBranchReplication() || merging) && !(fgAODDimuons))      
+           {   
+               if (fDebug > 1) AliInfo("Replicating dimuon branch\n");
+               fgAODDimuons = new TClonesArray("AliAODDimuon",0);
+               fgAODDimuons->SetName("dimuons");
+               handler->AddBranch("TClonesArray", &fgAODDimuons);
+           }    
+
            // cache the pointerd in the AODEvent
            fOutputAOD->GetStdContent();
        }
-    } else {
-       AliWarning("No AOD Event Handler connected.") ; 
     }
+    ConnectMultiHandler();
     UserCreateOutputObjects();
+    DisconnectMultiHandler();
 }
 
 void AliAnalysisTaskSE::Exec(Option_t* option)
 {
 //
 // Exec analysis of one event
+
+    ConnectMultiHandler();
+
+    if ( fDebug >= 10)
+      printf("Task is active %5d\n", IsActive());
+    
     if (fDebug > 1) AliInfo("AliAnalysisTaskSE::Exec() \n");
+//
+    AliAODHandler* handler = dynamic_cast<AliAODHandler*> 
+       ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
+
+    AliAODInputHandler* aodH = dynamic_cast<AliAODInputHandler*>(fInputHandler);
+//
+// Was event selected ? If no event selection mechanism, the event SHOULD be selected (AG)
+    UInt_t isSelected = AliVEvent::kAny;
+    if( fInputHandler && fInputHandler->GetEventSelection()) {
+      // Get the actual offline trigger mask for the event and AND it with the
+      // requested mask. If no mask requested select by default the event.
+      if (fOfflineTriggerMask)
+         isSelected = fOfflineTriggerMask & fInputHandler->IsEventSelected();
+    }
+//  Functionality below moved in the filter tasks (AG)
+//    if (handler) handler->SetFillAOD(isSelected);
 
     if( fInputHandler ) {
-       fEntry = fInputHandler->GetReadEntry();
+       fEntry = fInputHandler->GetReadEntry();
+       fESDfriend = ((AliESDInputHandler*)fInputHandler)->GetESDfriend();
     }
     
+
+// Notify the change of run number
+    if (InputEvent() && (InputEvent()->GetRunNumber() != fCurrentRunNumber)) {
+       fCurrentRunNumber = InputEvent()->GetRunNumber();
+       NotifyRun();
+    }    
           
     else if( fMCEvent )
        fEntry = fMCEvent->Header()->GetEvent(); 
     if ( !((Entry()-1)%100) && fDebug > 0) 
          AliInfo(Form("%s ----> Processing event # %lld", CurrentFileName(), Entry()));
 
-    AliAODHandler* handler = (AliAODHandler*) 
-       ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
-    AliAODInputHandler* aodH = dynamic_cast<AliAODInputHandler*>(fInputHandler);
+    
+    
 
     if (handler && aodH) {
        fMCEvent = aodH->MCEvent();
        Bool_t merging = aodH->GetMergeEvents();
-       
-       if (!(handler->IsStandard()) && !(handler->AODIsReplicated())) {
-           if ((handler->NeedsHeaderReplication()) && (fgAODHeader))
+      
+  // Do not analyze merged events if last embedded file has less events than normal event, 
+  // skip analysis after last embeded event 
+  if(merging){
+    if(aodH->GetReadEntry() + aodH->GetMergeOffset() >= aodH->GetTreeToMerge()->GetEntriesFast()){
+      //printf("Skip Entry %lld, Offset %d, Tree Entries %d\n",aodH->GetReadEntry(),aodH->GetMergeOffset(), aodH->GetTreeToMerge()->GetEntries());
+          
+      // Do I need to add the lines before the return?
+      // Added protection in case the derived task is not an AOD producer.
+      AliAnalysisDataSlot *out0 = GetOutputSlot(0);
+      if (out0 && out0->IsConnected()) PostData(0, fTreeA);    
+          
+      DisconnectMultiHandler();
+          
+      return;
+    }
+    //else   printf("MERGE Entry %lld, Offset %d, Tree Entries %d\n",aodH->GetReadEntry(),aodH->GetMergeOffset(), aodH->GetTreeToMerge()->GetEntries());
+  }
+      
+       AliAODEvent* aod = dynamic_cast<AliAODEvent*>(InputEvent());
+
+       if (aod && !(handler->IsStandard()) && !(handler->AODIsReplicated())) {
+           if ((handler->NeedsHeaderReplication() || merging) && (fgAODHeader))
            {
              // copy the contents by assigment
-             *fgAODHeader =  *(dynamic_cast<AliAODHeader*>(InputEvent()->GetHeader()));
+             *fgAODHeader =  *(aod->GetHeader());
            }
-           if ((handler->NeedsTracksBranchReplication() || merging) && (fgAODTracks))
+           if ((handler->NeedsTracksBranchReplication() || (merging &&  aodH->GetMergeTracks())) && (fgAODTracks))
            {
-               TClonesArray* tracks = (dynamic_cast<AliAODEvent*>(InputEvent()))->GetTracks();
+               TClonesArray* tracks = aod->GetTracks();
                new (fgAODTracks) TClonesArray(*tracks);
            }
            if ((handler->NeedsVerticesBranchReplication() || merging) && (fgAODVertices))
            {
-               TClonesArray* vertices = (dynamic_cast<AliAODEvent*>(InputEvent()))->GetVertices();
+               TClonesArray* vertices = aod->GetVertices();
                new (fgAODVertices) TClonesArray(*vertices);
            }
            if ((handler->NeedsV0sBranchReplication()) && (fgAODV0s))
            {
-               TClonesArray* v0s = (dynamic_cast<AliAODEvent*>(InputEvent()))->GetV0s();
+               TClonesArray* v0s = aod->GetV0s();
                new (fgAODV0s) TClonesArray(*v0s);
            }
            if ((handler->NeedsTrackletsBranchReplication()) && (fgAODTracklets))
            {
-             *fgAODTracklets = *(dynamic_cast<AliAODEvent*>(InputEvent()))->GetTracklets();
+             *fgAODTracklets = *aod->GetTracklets();
            }
            if ((handler->NeedsPMDClustersBranchReplication()) && (fgAODPMDClusters))
            {
-               TClonesArray* pmdClusters = (dynamic_cast<AliAODEvent*>(InputEvent()))->GetPmdClusters();
+               TClonesArray* pmdClusters = aod->GetPmdClusters();
                new (fgAODPMDClusters) TClonesArray(*pmdClusters);
            }
-           if ((handler->NeedsJetsBranchReplication() || merging) && (fgAODJets))
+           if ((handler->NeedsJetsBranchReplication() || (merging &&aodH->GetMergeTracks())) && (fgAODJets))
            {
-               TClonesArray* jets = (dynamic_cast<AliAODEvent*>(InputEvent()))->GetJets();
+               TClonesArray* jets = aod->GetJets();
                new (fgAODJets) TClonesArray(*jets);
            }
            if ((handler->NeedsFMDClustersBranchReplication()) && (fgAODFMDClusters))
            {
-               TClonesArray* fmdClusters = (dynamic_cast<AliAODEvent*>(InputEvent()))->GetFmdClusters();
+               TClonesArray* fmdClusters = aod->GetFmdClusters();
                new (fgAODFMDClusters) TClonesArray(*fmdClusters);
            }
-           if ((handler->NeedsCaloClustersBranchReplication() || merging) && (fgAODCaloClusters))
+           if ((handler->NeedsCaloClustersBranchReplication() || 
+                (merging && (aodH->GetMergeEMCALClusters() || aodH->GetMergePHOSClusters()))) 
+               && (fgAODCaloClusters))
            {
-               TClonesArray* caloClusters = (dynamic_cast<AliAODEvent*>(InputEvent()))->GetCaloClusters();
+               TClonesArray* caloClusters = aod->GetCaloClusters();
                new (fgAODCaloClusters) TClonesArray(*caloClusters);
            }
 
            if ((handler->NeedsMCParticlesBranchReplication() || merging) && (fgAODMCParticles))
            {
-               TClonesArray* mcParticles = (TClonesArray*) ((dynamic_cast<AliAODEvent*>(InputEvent()))->FindListObject("mcparticles"));
-               new (fgAODMCParticles) TClonesArray(*mcParticles);
+               TClonesArray* mcParticles = (TClonesArray*) (aod->FindListObject("mcparticles"));
+               if( mcParticles )
+                 new (fgAODMCParticles) TClonesArray(*mcParticles);
+           }
+           
+           if ((handler->NeedsDimuonsBranchReplication() || (merging && aodH->GetMergeTracks())) && (fgAODDimuons))
+           {
+               fgAODDimuons->Clear();
+               TClonesArray& dimuons = *fgAODDimuons;
+               TClonesArray& tracksnew = *fgAODTracks;
+               
+                Int_t nMuonTrack[100]; 
+                for(Int_t imuon = 0; imuon < 100; imuon++) nMuonTrack[imuon] = 0;
+                Int_t nMuons=0;
+               for(Int_t ii=0; ii < fgAODTracks->GetEntries(); ii++){
+                   AliAODTrack *track = (AliAODTrack*) fgAODTracks->At(ii);
+                   if(track->IsMuonTrack()) {
+                       nMuonTrack[nMuons]= ii;
+                       nMuons++;
+                   }  
+               }
+                Int_t jDimuons=0;
+               if(nMuons >= 2){
+                   for(Int_t i = 0; i < nMuons; i++){
+                       Int_t index0 = nMuonTrack[i];
+                       for(Int_t j = i+1; j < nMuons; j++){
+                           Int_t index1 = nMuonTrack[j];
+                           tracksnew.At(index0)->ResetBit(kIsReferenced);
+                           tracksnew.At(index0)->SetUniqueID(0); 
+                           tracksnew.At(index1)->ResetBit(kIsReferenced);
+                           tracksnew.At(index1)->SetUniqueID(0);
+                           new(dimuons[jDimuons++]) AliAODDimuon(tracksnew.At(index0),tracksnew.At(index1));
+                       }
+                   }    
+               }
            }
-       
            // Additional merging if needed
            if (merging) {
+             Int_t nc;
+
                // mcParticles
                TClonesArray* mcparticles = (TClonesArray*) ((aodH->GetEventToMerge())->FindListObject("mcparticles"));
-               Int_t npart = mcparticles->GetEntries();
-               Int_t nc = fgAODMCParticles->GetEntries();
-               Int_t nc0 = nc;
-               
-               for (Int_t i = 0; i < npart; i++) {
+               if( mcparticles ){
+                 Int_t npart = mcparticles->GetEntries();
+                 nc = fgAODMCParticles->GetEntries();
+                 
+                 for (Int_t i = 0; i < npart; i++) {
                    AliAODMCParticle* particle = (AliAODMCParticle*) mcparticles->At(i);
-                   AliAODMCParticle* newpart  = new((*fgAODMCParticles)[nc++]) AliAODMCParticle(*particle);
+                   new((*fgAODMCParticles)[nc++]) AliAODMCParticle(*particle);
+                 }
                }
-               
+
                // tracks
                TClonesArray* tracks = aodH->GetEventToMerge()->GetTracks();
-               Int_t ntr = tracks->GetEntries();
-               nc  = fgAODTracks->GetEntries();        
-               for (Int_t i = 0; i < ntr; i++) {
+               if(tracks && aodH->GetMergeTracks()){
+                 Int_t ntr = tracks->GetEntries();
+                 nc  = fgAODTracks->GetEntries();      
+                 for (Int_t i = 0; i < ntr; i++) {
                    AliAODTrack*    track = (AliAODTrack*) tracks->At(i);
                    AliAODTrack* newtrack = new((*fgAODTracks)[nc++]) AliAODTrack(*track);
-                   newtrack->ResetBit(kIsReferenced);
-                   newtrack->SetUniqueID(0);
-                   newtrack->SetLabel(newtrack->GetLabel() + nc0);
-                   
+                   newtrack->SetLabel(newtrack->GetLabel() + fgAODMCParticles->GetEntries());
+                 }
+                 
+                 for (Int_t i = 0; i < nc; i++) 
+                   {
+                     AliAODTrack* track = (AliAODTrack*) fgAODTracks->At(i);
+                     track->ResetBit(kIsReferenced);
+                     track->SetUniqueID(0);
+                   }
                }
+               
                // clusters
                TClonesArray* clusters = aodH->GetEventToMerge()->GetCaloClusters();
-               Int_t ncl  = clusters->GetEntries();
-               nc         =  fgAODCaloClusters->GetEntries();
-               for (Int_t i = 0; i < ncl; i++) {
+               if( clusters  && (aodH->GetMergeEMCALClusters() || aodH->GetMergePHOSClusters())) {
+                 Int_t ncl  = clusters->GetEntries();
+                 nc         =  fgAODCaloClusters->GetEntries();
+                 for (Int_t i = 0; i < ncl; i++) {
                    AliAODCaloCluster*    cluster = (AliAODCaloCluster*) clusters->At(i);
-                   AliAODCaloCluster* newcluster = new((*fgAODCaloClusters)[nc++]) AliAODCaloCluster(*cluster);
+                   if(cluster->IsEMCAL() && !aodH->GetMergeEMCALClusters() ) continue;
+                   if(cluster->IsPHOS()  && !aodH->GetMergePHOSClusters()  ) continue;   
+                   new((*fgAODCaloClusters)[nc++]) AliAODCaloCluster(*cluster);
+                 }
                }
-               // cells
-               AliAODCaloCells* cellsA = aodH->GetEventToMerge()->GetEMCALCells();
-               Int_t ncells  = cellsA->GetNumberOfCells();
-               nc = fgAODEmcalCells->GetNumberOfCells();
-               
-               for (Int_t i  = 0; i < ncells; i++) {
-                   Int_t cn  = cellsA->GetCellNumber(i);
-                   Int_t pos = fgAODEmcalCells->GetCellPosition(cn);
-                   if (pos >= 0) {
-                       Double_t amp = cellsA->GetAmplitude(i) + fgAODEmcalCells->GetAmplitude(pos);
-                       fgAODEmcalCells->SetCell(pos, cn, amp);
-                   } else {
-                       Double_t amp = cellsA->GetAmplitude(i);
-                       fgAODEmcalCells->SetCell(nc++, cn, amp);
+
+               // EMCAL cells
+               //*fgAODEmcalCells =  *(aod->GetEMCALCells()); // This will be valid after 10.Mar.2011.
+               if(aodH->GetMergeEMCALCells()) {
+                   AliAODCaloCells* copycells = aod->GetEMCALCells();
+                   fgAODEmcalCells->CreateContainer(copycells->GetNumberOfCells());
+                   nc  = copycells->GetNumberOfCells();
+                   while( nc-- ){ fgAODEmcalCells->SetCell(nc,copycells->GetCellNumber(nc),copycells->GetAmplitude(nc)); }
+
+                   AliAODCaloCells* cellsA = aodH->GetEventToMerge()->GetEMCALCells();
+                   if( cellsA ){
+                       Int_t ncells  = cellsA->GetNumberOfCells();
+                       nc = fgAODEmcalCells->GetNumberOfCells();
+                       for (Int_t i  = 0; i < ncells; i++) {
+                           Int_t cn  = cellsA->GetCellNumber(i);
+                           Int_t pos = fgAODEmcalCells->GetCellPosition(cn);
+                           if (pos >= 0) {
+                               Double_t amp = cellsA->GetAmplitude(i) + fgAODEmcalCells->GetAmplitude(pos);
+                               fgAODEmcalCells->SetCell(pos, cn, amp);
+                           } else {
+                               AliAODCaloCells* copycells1 = new AliAODCaloCells(*fgAODEmcalCells);
+                               fgAODEmcalCells->CreateContainer(nc+1);
+                               Int_t nn = copycells1->GetNumberOfCells();
+                               while( nn-- ){ fgAODEmcalCells->SetCell(nn,copycells1->GetCellNumber(nn),copycells1->GetAmplitude(nn)); }
+                               fgAODEmcalCells->SetCell(nc++,cn,cellsA->GetAmplitude(i));
+                               delete copycells1;
+                           }
+                       }
                        fgAODEmcalCells->Sort();
                    }
-               }
+               } // merge emcal cells
                
                
+               // PHOS cells
+               //*fgAODPhosCells =  *(aod->GetPHOSCells()); // This will be valid after 10.Mar.2011.
+               if(aodH->GetMergePHOSCells()) {
+                   AliAODCaloCells* copycells = aod->GetPHOSCells();
+                   fgAODPhosCells->CreateContainer(copycells->GetNumberOfCells());
+                   nc  = copycells->GetNumberOfCells();
+                   while( nc-- ){ fgAODPhosCells->SetCell(nc,copycells->GetCellNumber(nc),copycells->GetAmplitude(nc)); }
+                   AliAODCaloCells* cellsP = aodH->GetEventToMerge()->GetPHOSCells();
+                   if( cellsP ){
+                       Int_t ncellsP  = cellsP->GetNumberOfCells();
+                       nc = fgAODPhosCells->GetNumberOfCells();
+                       
+                       for (Int_t i  = 0; i < ncellsP; i++) {
+                           Int_t cn  = cellsP->GetCellNumber(i);
+                           Int_t pos = fgAODPhosCells->GetCellPosition(cn);
+                           if (pos >= 0) {
+                               Double_t amp = cellsP->GetAmplitude(i) + fgAODPhosCells->GetAmplitude(pos);
+                               fgAODPhosCells->SetCell(pos, cn, amp);
+                           } else {
+                               AliAODCaloCells* copycells1 = new AliAODCaloCells(*fgAODPhosCells);
+                               fgAODPhosCells->CreateContainer(nc+1);
+                               Int_t nn = copycells1->GetNumberOfCells();
+                               while( nn-- ){ fgAODPhosCells->SetCell(nn,copycells1->GetCellNumber(nn),copycells1->GetAmplitude(nn)); }
+                               fgAODPhosCells->SetCell(nc++,cn,cellsP->GetAmplitude(i));
+                               delete copycells1;
+                           }
+                       }
+                       fgAODPhosCells->Sort();
+                   }
+               } // Merge PHOS Cells
+                       
            } // merging
            
            handler->SetAODIsReplicated();
        }
     }
 
+
 // Call the user analysis    
-    UserExec(option);
-    // Added protection in case the derived task is not an AOD producer.
+    if (!fMCEventHandler) {
+       if (isSelected) 
+           UserExec(option);
+    } else {
+       if (isSelected && (fMCEventHandler->InitOk())) 
+           UserExec(option);
+    }
+    
+// Added protection in case the derived task is not an AOD producer.
     AliAnalysisDataSlot *out0 = GetOutputSlot(0);
     if (out0 && out0->IsConnected()) PostData(0, fTreeA);    
+
+    DisconnectMultiHandler();
 }
 
 const char* AliAnalysisTaskSE::CurrentFileName()
@@ -412,7 +614,7 @@ const char* AliAnalysisTaskSE::CurrentFileName()
 void AliAnalysisTaskSE::AddAODBranch(const char* cname, void* addobj, const char *fname)
 {
     // Add a new branch to the aod tree
-    AliAODHandler* handler = (AliAODHandler*) 
+    AliAODHandler* handler = dynamic_cast<AliAODHandler*> 
        ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
     if (handler) {
        handler->AddBranch(cname, addobj, fname);
@@ -423,7 +625,7 @@ Bool_t AliAnalysisTaskSE::IsStandardAOD() const
 {
 // Check if the output AOD handler is configured for standard or delta AOD.
 // Users should first check that AODEvent() returns non-null.
-    AliAODHandler* handler = (AliAODHandler*) 
+    AliAODHandler* handler = dynamic_cast<AliAODHandler*> 
          ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
     if (!handler) {
        Error("IsStandardAOD", "No AOD handler. Please use AODEvent() to check this first");
@@ -431,3 +633,64 @@ Bool_t AliAnalysisTaskSE::IsStandardAOD() const
     }
     return handler->IsStandard();   
 }
+
+Bool_t AliAnalysisTaskSE::Notify()
+{
+    return (UserNotify());
+}
+
+const AliEventTag *AliAnalysisTaskSE::EventTag() const
+{
+// Returns tag for the current event, if any. The return value should always be checked by the user.
+   if (!fInputHandler) {
+      Error("EventTag", "Input handler not yet available. Call this in UserExec");
+      return NULL;
+   }
+   return fInputHandler->GetEventTag();
+}
+
+void AliAnalysisTaskSE::LoadBranches() const
+{
+// Load all branches declared in fBranchNames data member of the parent class.
+// Should be called in UserExec.
+  if (!fInputHandler) {
+     Error("LoadBranches", "Input handler not available yet. Call this in UserExec");
+     return;
+  }
+  AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
+  if (mgr->GetAutoBranchLoading()) return;
+  TString taskbranches;
+  GetBranches(fInputHandler->GetDataType(), taskbranches);
+  if (taskbranches.IsNull()) return;
+  TObjArray *arr = taskbranches.Tokenize(",");
+  TIter next(arr);
+  TObject *obj;
+  while ((obj=next())) mgr->LoadBranch(obj->GetName());
+}
+
+
+//_________________________________________________________________________________________________
+void AliAnalysisTaskSE::ConnectMultiHandler()
+{
+   //
+   // Connect MultiHandler
+   //
+   fInputHandler = (AliInputEventHandler *)((AliAnalysisManager::GetAnalysisManager())->GetInputEventHandler());
+   fMultiInputHandler = dynamic_cast<AliMultiInputEventHandler *>(fInputHandler);
+   if (fMultiInputHandler) {
+      fInputHandler = dynamic_cast<AliInputEventHandler *>(fMultiInputHandler->GetFirstInputEventHandler());
+      fMCEventHandler = dynamic_cast<AliMCEventHandler *>(fMultiInputHandler->GetFirstMCEventHandler());
+   } else { 
+      fMCEventHandler = dynamic_cast<AliMCEventHandler *>((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler());
+   }
+   if (fMCEventHandler) fMCEvent = fMCEventHandler->MCEvent();
+}
+
+//_________________________________________________________________________________________________
+void AliAnalysisTaskSE::DisconnectMultiHandler()
+{
+   //
+   // Disconnect MultiHandler
+   //
+   if (fMultiInputHandler) fInputHandler = fMultiInputHandler;
+}