[u/mrichter/AliRoot.git] / ANALYSIS / AliAnalysisDataContainer.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/* $Id$ */
// Author: Andrei Gheata, 31/05/2006

//==============================================================================
//   AliAnalysysDataContainer - Container of data of arbitrary type deriving
//      from TObject used for analysis. A container must be connected to the 
//      output data slot of a single analysis task (producer) , but also as 
//      input slot for possibly several other tasks (consumers). The connected 
//      slots must enforce the same data type as the container (or a derived type).
//      A container becomes the owner of the contained data once this was produced.
//
// Containers should be defined by the analysis module using:
//
//   AliAnalysisModule::AddContainer(const char *name, TClass *type);
//
// A container should be connected to a producer:

//   AliAnalysisModule::ConnectOutput(AliAnalysisTask *task,
//                                    AliAnalysisDataContainer *cont)
// and to its consumers:
//
//   AliAnalysisModule::ConnectInput(AliAnalysisTask *task, Int_t islot,
//                                   AliAnalysisDataContainer *cont)
//
// The container will create an implicit connection between the producer task 
// and all consumers, which will become sub-tasks of the producer.
//
//==============================================================================

#include <Riostream.h>
#include <TMethodCall.h>

#include <TClass.h>
#include <TTree.h>
#include <TROOT.h>

#include "AliAnalysisDataContainer.h"
#include "AliAnalysisDataSlot.h"
#include "AliAnalysisTask.h"

ClassImp(AliAnalysisDataContainer)

//______________________________________________________________________________
AliAnalysisDataContainer::AliAnalysisDataContainer() : TNamed(),
                          fDataReady(kFALSE),
                          fOwnedData(kFALSE),
                          fFileName(),
                          fData(NULL),
                          fType(NULL),
                          fProducer(NULL),
                          fConsumers(NULL)
{
// Dummy ctor.
   TObject::SetBit(kContEvtByEvt, kTRUE);
}

//______________________________________________________________________________
AliAnalysisDataContainer::AliAnalysisDataContainer(const char *name, TClass *type)
                         :TNamed(name,""),
                          fDataReady(kFALSE),
                          fOwnedData(kTRUE),
                          fFileName(),
                          fData(NULL),
                          fType(type),
                          fProducer(NULL),
                          fConsumers(NULL)
{
// Default constructor.
   SetTitle(fType->GetName());
   TObject::SetBit(kContEvtByEvt, kTRUE);
}

//______________________________________________________________________________
AliAnalysisDataContainer::AliAnalysisDataContainer(const AliAnalysisDataContainer &cont)
                         :TNamed(cont),
                          fDataReady(cont.fDataReady),
                          fOwnedData(kFALSE),
                          fFileName(cont.fFileName),
                          fData(cont.fData),
                          fType(NULL),
                          fProducer(cont.fProducer),
                          fConsumers(NULL)
{
// Copy ctor.
   GetType();
   if (cont.fConsumers) {
      fConsumers = new TObjArray(2);
      Int_t ncons = cont.fConsumers->GetEntriesFast();
      for (Int_t i=0; i<ncons; i++) fConsumers->Add(cont.fConsumers->At(i));
   }   
}

//______________________________________________________________________________
AliAnalysisDataContainer::~AliAnalysisDataContainer()
{
// Destructor. Deletes data ! (What happens if data is a container ???)
   if (fData && fOwnedData) delete fData;
   if (fConsumers) delete fConsumers;
}

//______________________________________________________________________________
AliAnalysisDataContainer &AliAnalysisDataContainer::operator=(const AliAnalysisDataContainer &cont)
{
// Assignment.
   if (&cont != this) {
      TNamed::operator=(cont);
      fDataReady = cont.fDataReady;
      fOwnedData = kFALSE;  // !!! Data owned by cont.
      fFileName = cont.fFileName;
      fData = cont.fData;
      GetType();
      fProducer = cont.fProducer;
      if (cont.fConsumers) {
         fConsumers = new TObjArray(2);
         Int_t ncons = cont.fConsumers->GetEntriesFast();
         for (Int_t i=0; i<ncons; i++) fConsumers->Add(cont.fConsumers->At(i));
      }   
   }   
   return *this;
}      

//______________________________________________________________________________
void AliAnalysisDataContainer::AddConsumer(AliAnalysisTask *consumer, Int_t islot)
{
// Add a consumer for contained data;
   AliAnalysisDataSlot *slot = consumer->GetInputSlot(islot);
   if (!slot || !slot->GetType()) {
     cout<<"Consumer task "<< consumer->GetName()<<" does not have an input/type #"<<islot<<endl;
     //AliError(Form("Consumer task %s does not have an input #%i", consumer->GetName(),islot));
      return;
   }
   if (!slot->GetType()->InheritsFrom(GetType())) {
     cout<<"Data type "<<slot->GetTitle()<<" for input slot "<<islot<<" of task "<<consumer->GetName()<<" does not match container type "<<GetTitle()<<endl;  
     //AliError(Form("Data type %s for input slot %i of task %s does not match container type %s", slot->GetType()->GetName(),islot,consumer->GetName(),fType->GetName()));
      return;
   }   

   if (!fConsumers) fConsumers = new TObjArray(2);   
   fConsumers->Add(consumer);
   // Add the consumer task to the list of task of the producer
   if (fProducer && !fProducer->GetListOfTasks()->FindObject(consumer)) 
      fProducer->Add(consumer);
}      

//______________________________________________________________________________
Bool_t AliAnalysisDataContainer::ClientsExecuted() const
{
// Check if all client tasks have executed.
   TIter next(fConsumers);
   AliAnalysisTask *task;
   while ((task=(AliAnalysisTask*)next())) {
      if (!task->HasExecuted()) return kFALSE;
   }
   return kTRUE;
}   

//______________________________________________________________________________
void AliAnalysisDataContainer::DeleteData()
{
// Delete data if not needed anymore.
   if (!fDataReady || !ClientsExecuted()) {
     cout<<"Data not ready or not all clients of container "<<GetName()<<" executed. Data not deleted."<<endl;
     //AliWarning(Form("Data not ready or not all clients of container %s executed. Data not deleted.", GetName()));
      return;
   }
   if (!fOwnedData) {
     cout<<"Data not owned by container "<<GetName()<<". Not deleted."<<endl;
     //AliWarning(Form("Data not owned by container %s. Not deleted.", GetName()));
      return;
   }
   delete fData;
   fData = 0;
   fDataReady = kFALSE;
}   

//______________________________________________________________________________
TClass *AliAnalysisDataContainer::GetType() const
{
// Get class type for this slot.
   AliAnalysisDataContainer *cont = (AliAnalysisDataContainer*)this;
   if (!fType) cont->SetType(gROOT->GetClass(fTitle.Data()));
   if (!fType) printf("AliAnalysisDataContainer: Unknown class: %s\n", GetTitle());
   return fType;
}

//______________________________________________________________________________
void AliAnalysisDataContainer::GetEntry(Long64_t ientry)
{
// If data is ready and derives from TTree or from TBranch, this will get the
// requested entry in memory if not already loaded.
   if (!fDataReady || !GetType()) return;
   Bool_t istree = fType->InheritsFrom(TTree::Class());
   if (istree) {
      TTree *tree = (TTree*)fData;
      if (tree->GetReadEntry() != ientry) tree->GetEntry(ientry);
      return;
   }   
   Bool_t isbranch = fType->InheritsFrom(TBranch::Class());
   if (isbranch) {
      TBranch *branch = (TBranch*)fData;
      if (branch->GetReadEntry() != ientry) branch->GetEntry(ientry);
      return;
   }   
}   

//______________________________________________________________________________
Long64_t AliAnalysisDataContainer::Merge(TCollection *list)
{
// Merge a list of containers with this one. Containers in the list must have
// data of the same type.
   if (!list || !fData) return 0;
   printf("Merging %d containers %s\n", list->GetSize()+1, GetName());
   TMethodCall callEnv;
   if (fData->IsA())
      callEnv.InitWithPrototype(fData->IsA(), "Merge", "TCollection*");
   if (!callEnv.IsValid() && !list->IsEmpty()) {
      cout << "No merge interface for data stored by " << GetName() << ". Merging not possible !" << endl;
      return 1;
   }

   if (list->IsEmpty()) return 1;

   TIter next(list);
   AliAnalysisDataContainer *cont;
   // Make a list where to temporary store the data to be merged.
   TList *collectionData = new TList();
   Int_t count = 0; // object counter
   while ((cont=(AliAnalysisDataContainer*)next())) {
      TObject *data = cont->GetData();
      if (!data) continue;
      if (strcmp(cont->GetName(), GetName())) {
         cout << "Not merging containers with different names !" << endl;
         continue;
      }
      printf(" ... merging object %s\n", data->GetName());
      collectionData->Add(data);
      count++;
   }
   callEnv.SetParam((Long_t) collectionData);
   callEnv.Execute(fData);
   delete collectionData;

   return count+1;
}

//______________________________________________________________________________
void AliAnalysisDataContainer::PrintContainer(Option_t *option, Int_t indent) const
{
// Print info about this container.
   TString ind;
   for (Int_t i=0; i<indent; i++) ind += " ";
   TString opt(option);
   opt.ToLower();
   Bool_t dep = (opt.Contains("dep"))?kTRUE:kFALSE;
   if (!dep) {
      printf("%sContainer: %s  type: %s", ind.Data(), GetName(), GetTitle());
      if (fProducer) 
         printf("%s = Data producer: task %s",ind.Data(),fProducer->GetName());
      else
         printf("%s= No data producer",ind.Data());
      printf("%s = Consumer tasks: ", ind.Data());
      if (!fConsumers || !fConsumers->GetEntriesFast()) printf("-none-\n");
      else printf("\n");
   }
   printf("Filename: %s\n", fFileName.Data());
   TIter next(fConsumers);
   AliAnalysisTask *task;
   while ((task=(AliAnalysisTask*)next())) task->PrintTask(option, indent+3);
}   

//______________________________________________________________________________
Bool_t AliAnalysisDataContainer::SetData(TObject *data, Option_t *)
{
// Set the data as READY only if it was published by the producer.
   // If there is no producer declared, this is a top level container.
   AliAnalysisTask *task;
   Bool_t init = kFALSE;
   Int_t i, nc;
   if (!fProducer) {
      if (data != fData) init = kTRUE;
      fData = data;
      fDataReady = kTRUE;
      if (fConsumers) {
         nc = fConsumers->GetEntriesFast();
         for (i=0; i<nc; i++) {
            task = (AliAnalysisTask*)fConsumers->At(i);
            task->CheckNotify(init);
         }
      }      
      return kTRUE;
   }
   // Check if it is the producer who published the data     
   if (fProducer->GetPublishedData()==data) {
      fData = data;
      fDataReady = kTRUE;
      if (fConsumers) {
         nc = fConsumers->GetEntriesFast();
         for (i=0; i<nc; i++) {
            task = (AliAnalysisTask*)fConsumers->At(i);
            task->CheckNotify();
         }
      }      
      return kTRUE;   
   } else {
     cout<<"Data for container "<<GetName()<<" can be published only by producer task "<<fProducer->GetName()<<endl;
     //AliWarning(Form("Data for container %s can be published only by producer task %s", GetName(), fProducer->GetName()));   
     return kFALSE;           
   }              
}

//______________________________________________________________________________
void AliAnalysisDataContainer::SetProducer(AliAnalysisTask *prod, Int_t islot)
{
// Set the producer of data. The slot number is required for data type checking.
   if (fProducer) {
     cout<<"Data container "<<GetName()<<" already has a producer: "<<fProducer->GetName()<<endl;
     //AliWarning(Form("Data container %s already has a producer: %s",GetName(),fProducer->GetName()));
   } 
   if (fDataReady) {
     cout<<GetName()<<" container contains data - cannot change producer!"<<endl;
     //AliError(Form("%s container contains data - cannot change producer!", GetName()));
      return;
   }   
   AliAnalysisDataSlot *slot = prod->GetOutputSlot(islot);
   if (!slot) {
     cout<<"Producer task "<<prod->GetName()<<" does not have an output #"<<islot<<endl;
     //AliError(Form("Producer task %s does not have an output #%i", prod->GetName(),islot));
      return;
   }   
   if (!slot->GetType()->InheritsFrom(GetType())) {
     cout<<"Data type "<<slot->GetTitle()<<"for output slot "<<islot<<" of task "<<prod->GetName()<<" does not match container type "<<GetTitle()<<endl;
     //AliError(Form("Data type %s for output slot %i of task %s does not match container type %s", slot->GetType()->GetName(),islot,prod->GetName(),fType->GetName()));
      return;
   }   
   
   fProducer = prod;
   // Add all consumers as daughter tasks
   TIter next(fConsumers);
   AliAnalysisTask *cons;
   while ((cons=(AliAnalysisTask*)next())) {
      if (!prod->GetListOfTasks()->FindObject(cons)) prod->Add(cons);
   }   
}   

//______________________________________________________________________________
AliAnalysisDataWrapper *AliAnalysisDataContainer::ExportData() const
{
// Wraps data for sending it through the net.
   AliAnalysisDataWrapper *pack = 0;
   if (!fData) return pack;
   pack = new AliAnalysisDataWrapper(fData);
   pack->SetName(fName.Data());
   return pack;
}

//______________________________________________________________________________
void AliAnalysisDataContainer::ImportData(AliAnalysisDataWrapper *pack)
{
// Unwraps data from a data wrapper.
   if (pack) {
      fData = pack->Data();
      fDataReady = kTRUE;
   }   
}      
      
ClassImp (AliAnalysisDataWrapper)

//______________________________________________________________________________
AliAnalysisDataWrapper &AliAnalysisDataWrapper::operator=(const AliAnalysisDataWrapper &other)
{
// Assignment.
   if (&other != this) {
      TNamed::operator=(other);
      fData = other.fData;
   }   
   return *this;
}

//______________________________________________________________________________
Long64_t AliAnalysisDataWrapper::Merge(TCollection *list)
{
// Merge a list of containers with this one. Containers in the list must have
// data of the same type.
   if (!fData) return 0;
   if (!list || list->IsEmpty()) return 1;

   printf("Merging %d data wrappers %s\n", list->GetSize()+1, GetName());
   TMethodCall callEnv;
   if (fData->InheritsFrom(TSeqCollection::Class())) {
      TSeqCollection *coll = (TSeqCollection*)fData;
      if (coll->IsEmpty()) return 0;
      Int_t nentries = coll->GetEntries();
      AliAnalysisDataWrapper *top;
      TIter next(list);
      TSeqCollection *collcrt = 0;
      TList *list1 = 0;
      for (Int_t i=0; i<nentries; i++) {
         list1 = new TList();
         top = new AliAnalysisDataWrapper(coll->At(i));
         next.Reset();
         while ((collcrt=(TSeqCollection*)next())) 
            list1->Add(new AliAnalysisDataWrapper(collcrt->At(i)));
         if (!top->Merge(list1)) {
            list1->Delete();
            delete list1;
            return 0;   
         }   
         list1->Delete();
         delete list1;
      }
      return nentries;
   }   
   
   if (fData->IsA())
      callEnv.InitWithPrototype(fData->IsA(), "Merge", "TCollection*");
   if (!callEnv.IsValid()) {
      cout << "No merge interface for data stored by " << GetName() << ". Merging not possible !" << endl;
      return 1;
   }

   TIter next(list);
   AliAnalysisDataWrapper *cont;
   // Make a list where to temporary store the data to be merged.
   TList *collectionData = new TList();
   Int_t count = 0; // object counter
   while ((cont=(AliAnalysisDataWrapper*)next())) {
      TObject *data = cont->Data();
      if (!data) continue;
      if (strcmp(cont->GetName(), GetName())) continue;
      collectionData->Add(data);
      count++;
   }
   callEnv.SetParam((Long_t) collectionData);
   callEnv.Execute(fData);
   delete collectionData;

   return count+1;
}
Commit	Line	Data
	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	// Author: Andrei Gheata, 31/05/2006
	18
	19	//==============================================================================
	20	// AliAnalysysDataContainer - Container of data of arbitrary type deriving
	21	// from TObject used for analysis. A container must be connected to the
	22	// output data slot of a single analysis task (producer) , but also as
	23	// input slot for possibly several other tasks (consumers). The connected
	24	// slots must enforce the same data type as the container (or a derived type).
	25	// A container becomes the owner of the contained data once this was produced.
	26	//
	27	// Containers should be defined by the analysis module using:
	28	//
	29	// AliAnalysisModule::AddContainer(const char name, TClass type);
	30	//
	31	// A container should be connected to a producer:
	32
	33	// AliAnalysisModule::ConnectOutput(AliAnalysisTask *task,
	34	// AliAnalysisDataContainer *cont)
	35	// and to its consumers:
	36	//
	37	// AliAnalysisModule::ConnectInput(AliAnalysisTask *task, Int_t islot,
	38	// AliAnalysisDataContainer *cont)
	39	//
	40	// The container will create an implicit connection between the producer task
	41	// and all consumers, which will become sub-tasks of the producer.
	42	//
	43	//==============================================================================
	44
	45	#include <Riostream.h>
	46	#include <TMethodCall.h>
	47
	48	#include <TClass.h>
	49	#include <TTree.h>
	50	#include <TROOT.h>
	51
	52	#include "AliAnalysisDataContainer.h"
	53	#include "AliAnalysisDataSlot.h"
	54	#include "AliAnalysisTask.h"
	55
	56	ClassImp(AliAnalysisDataContainer)
	57
	58	//______________________________________________________________________________
	59	AliAnalysisDataContainer::AliAnalysisDataContainer() : TNamed(),
	60	fDataReady(kFALSE),
	61	fOwnedData(kFALSE),
	62	fFileName(),
	63	fData(NULL),
	64	fType(NULL),
	65	fProducer(NULL),
	66	fConsumers(NULL)
	67	{
	68	// Dummy ctor.
	69	TObject::SetBit(kContEvtByEvt, kTRUE);
	70	}
	71
	72	//______________________________________________________________________________
	73	AliAnalysisDataContainer::AliAnalysisDataContainer(const char name, TClass type)
	74	:TNamed(name,""),
	75	fDataReady(kFALSE),
	76	fOwnedData(kTRUE),
	77	fFileName(),
	78	fData(NULL),
	79	fType(type),
	80	fProducer(NULL),
	81	fConsumers(NULL)
	82	{
	83	// Default constructor.
	84	SetTitle(fType->GetName());
	85	TObject::SetBit(kContEvtByEvt, kTRUE);
	86	}
	87
	88	//______________________________________________________________________________
	89	AliAnalysisDataContainer::AliAnalysisDataContainer(const AliAnalysisDataContainer &cont)
	90	:TNamed(cont),
	91	fDataReady(cont.fDataReady),
	92	fOwnedData(kFALSE),
	93	fFileName(cont.fFileName),
	94	fData(cont.fData),
	95	fType(NULL),
	96	fProducer(cont.fProducer),
	97	fConsumers(NULL)
	98	{
	99	// Copy ctor.
	100	GetType();
	101	if (cont.fConsumers) {
	102	fConsumers = new TObjArray(2);
	103	Int_t ncons = cont.fConsumers->GetEntriesFast();
	104	for (Int_t i=0; i<ncons; i++) fConsumers->Add(cont.fConsumers->At(i));
	105	}
	106	}
	107
	108	//______________________________________________________________________________
	109	AliAnalysisDataContainer::~AliAnalysisDataContainer()
	110	{
	111	// Destructor. Deletes data ! (What happens if data is a container ???)
	112	if (fData && fOwnedData) delete fData;
	113	if (fConsumers) delete fConsumers;
	114	}
	115
	116	//______________________________________________________________________________
	117	AliAnalysisDataContainer &AliAnalysisDataContainer::operator=(const AliAnalysisDataContainer &cont)
	118	{
	119	// Assignment.
	120	if (&cont != this) {
	121	TNamed::operator=(cont);
	122	fDataReady = cont.fDataReady;
	123	fOwnedData = kFALSE; // !!! Data owned by cont.
	124	fFileName = cont.fFileName;
	125	fData = cont.fData;
	126	GetType();
	127	fProducer = cont.fProducer;
	128	if (cont.fConsumers) {
	129	fConsumers = new TObjArray(2);
	130	Int_t ncons = cont.fConsumers->GetEntriesFast();
	131	for (Int_t i=0; i<ncons; i++) fConsumers->Add(cont.fConsumers->At(i));
	132	}
	133	}
	134	return *this;
	135	}
	136
	137	//______________________________________________________________________________
	138	void AliAnalysisDataContainer::AddConsumer(AliAnalysisTask *consumer, Int_t islot)
	139	{
	140	// Add a consumer for contained data;
	141	AliAnalysisDataSlot *slot = consumer->GetInputSlot(islot);
	142	if (!slot \|\| !slot->GetType()) {
	143	cout<<"Consumer task "<< consumer->GetName()<<" does not have an input/type #"<<islot<<endl;
	144	//AliError(Form("Consumer task %s does not have an input #%i", consumer->GetName(),islot));
	145	return;
	146	}
	147	if (!slot->GetType()->InheritsFrom(GetType())) {
	148	cout<<"Data type "<<slot->GetTitle()<<" for input slot "<<islot<<" of task "<<consumer->GetName()<<" does not match container type "<<GetTitle()<<endl;
	149	//AliError(Form("Data type %s for input slot %i of task %s does not match container type %s", slot->GetType()->GetName(),islot,consumer->GetName(),fType->GetName()));
	150	return;
	151	}
	152
	153	if (!fConsumers) fConsumers = new TObjArray(2);
	154	fConsumers->Add(consumer);
	155	// Add the consumer task to the list of task of the producer
	156	if (fProducer && !fProducer->GetListOfTasks()->FindObject(consumer))
	157	fProducer->Add(consumer);
	158	}
	159
	160	//______________________________________________________________________________
	161	Bool_t AliAnalysisDataContainer::ClientsExecuted() const
	162	{
	163	// Check if all client tasks have executed.
	164	TIter next(fConsumers);
	165	AliAnalysisTask *task;
	166	while ((task=(AliAnalysisTask*)next())) {
	167	if (!task->HasExecuted()) return kFALSE;
	168	}
	169	return kTRUE;
	170	}
	171
	172	//______________________________________________________________________________
	173	void AliAnalysisDataContainer::DeleteData()
	174	{
	175	// Delete data if not needed anymore.
	176	if (!fDataReady \|\| !ClientsExecuted()) {
	177	cout<<"Data not ready or not all clients of container "<<GetName()<<" executed. Data not deleted."<<endl;
	178	//AliWarning(Form("Data not ready or not all clients of container %s executed. Data not deleted.", GetName()));
	179	return;
	180	}
	181	if (!fOwnedData) {
	182	cout<<"Data not owned by container "<<GetName()<<". Not deleted."<<endl;
	183	//AliWarning(Form("Data not owned by container %s. Not deleted.", GetName()));
	184	return;
	185	}
	186	delete fData;
	187	fData = 0;
	188	fDataReady = kFALSE;
	189	}
	190
	191	//______________________________________________________________________________
	192	TClass *AliAnalysisDataContainer::GetType() const
	193	{
	194	// Get class type for this slot.
	195	AliAnalysisDataContainer cont = (AliAnalysisDataContainer)this;
	196	if (!fType) cont->SetType(gROOT->GetClass(fTitle.Data()));
	197	if (!fType) printf("AliAnalysisDataContainer: Unknown class: %s\n", GetTitle());
	198	return fType;
	199	}
	200
	201	//______________________________________________________________________________
	202	void AliAnalysisDataContainer::GetEntry(Long64_t ientry)
	203	{
	204	// If data is ready and derives from TTree or from TBranch, this will get the
	205	// requested entry in memory if not already loaded.
	206	if (!fDataReady \|\| !GetType()) return;
	207	Bool_t istree = fType->InheritsFrom(TTree::Class());
	208	if (istree) {
	209	TTree tree = (TTree)fData;
	210	if (tree->GetReadEntry() != ientry) tree->GetEntry(ientry);
	211	return;
	212	}
	213	Bool_t isbranch = fType->InheritsFrom(TBranch::Class());
	214	if (isbranch) {
	215	TBranch branch = (TBranch)fData;
	216	if (branch->GetReadEntry() != ientry) branch->GetEntry(ientry);
	217	return;
	218	}
	219	}
	220
	221	//______________________________________________________________________________
	222	Long64_t AliAnalysisDataContainer::Merge(TCollection *list)
	223	{
	224	// Merge a list of containers with this one. Containers in the list must have
	225	// data of the same type.
	226	if (!list \|\| !fData) return 0;
	227	printf("Merging %d containers %s\n", list->GetSize()+1, GetName());
	228	TMethodCall callEnv;
	229	if (fData->IsA())
	230	callEnv.InitWithPrototype(fData->IsA(), "Merge", "TCollection*");
	231	if (!callEnv.IsValid() && !list->IsEmpty()) {
	232	cout << "No merge interface for data stored by " << GetName() << ". Merging not possible !" << endl;
	233	return 1;
	234	}
	235
	236	if (list->IsEmpty()) return 1;
	237
	238	TIter next(list);
	239	AliAnalysisDataContainer *cont;
	240	// Make a list where to temporary store the data to be merged.
	241	TList *collectionData = new TList();
	242	Int_t count = 0; // object counter
	243	while ((cont=(AliAnalysisDataContainer*)next())) {
	244	TObject *data = cont->GetData();
	245	if (!data) continue;
	246	if (strcmp(cont->GetName(), GetName())) {
	247	cout << "Not merging containers with different names !" << endl;
	248	continue;
	249	}
	250	printf(" ... merging object %s\n", data->GetName());
	251	collectionData->Add(data);
	252	count++;
	253	}
	254	callEnv.SetParam((Long_t) collectionData);
	255	callEnv.Execute(fData);
	256	delete collectionData;
	257
	258	return count+1;
	259	}
	260
	261	//______________________________________________________________________________
	262	void AliAnalysisDataContainer::PrintContainer(Option_t *option, Int_t indent) const
	263	{
	264	// Print info about this container.
	265	TString ind;
	266	for (Int_t i=0; i<indent; i++) ind += " ";
	267	TString opt(option);
	268	opt.ToLower();
	269	Bool_t dep = (opt.Contains("dep"))?kTRUE:kFALSE;
	270	if (!dep) {
	271	printf("%sContainer: %s type: %s", ind.Data(), GetName(), GetTitle());
	272	if (fProducer)
	273	printf("%s = Data producer: task %s",ind.Data(),fProducer->GetName());
	274	else
	275	printf("%s= No data producer",ind.Data());
	276	printf("%s = Consumer tasks: ", ind.Data());
	277	if (!fConsumers \|\| !fConsumers->GetEntriesFast()) printf("-none-\n");
	278	else printf("\n");
	279	}
	280	printf("Filename: %s\n", fFileName.Data());
	281	TIter next(fConsumers);
	282	AliAnalysisTask *task;
	283	while ((task=(AliAnalysisTask*)next())) task->PrintTask(option, indent+3);
	284	}
	285
	286	//______________________________________________________________________________
	287	Bool_t AliAnalysisDataContainer::SetData(TObject data, Option_t )
	288	{
	289	// Set the data as READY only if it was published by the producer.
	290	// If there is no producer declared, this is a top level container.
	291	AliAnalysisTask *task;
	292	Bool_t init = kFALSE;
	293	Int_t i, nc;
	294	if (!fProducer) {
	295	if (data != fData) init = kTRUE;
	296	fData = data;
	297	fDataReady = kTRUE;
	298	if (fConsumers) {
	299	nc = fConsumers->GetEntriesFast();
	300	for (i=0; i<nc; i++) {
	301	task = (AliAnalysisTask*)fConsumers->At(i);
	302	task->CheckNotify(init);
	303	}
	304	}
	305	return kTRUE;
	306	}
	307	// Check if it is the producer who published the data
	308	if (fProducer->GetPublishedData()==data) {
	309	fData = data;
	310	fDataReady = kTRUE;
	311	if (fConsumers) {
	312	nc = fConsumers->GetEntriesFast();
	313	for (i=0; i<nc; i++) {
	314	task = (AliAnalysisTask*)fConsumers->At(i);
	315	task->CheckNotify();
	316	}
	317	}
	318	return kTRUE;
	319	} else {
	320	cout<<"Data for container "<<GetName()<<" can be published only by producer task "<<fProducer->GetName()<<endl;
	321	//AliWarning(Form("Data for container %s can be published only by producer task %s", GetName(), fProducer->GetName()));
	322	return kFALSE;
	323	}
	324	}
	325
	326	//______________________________________________________________________________
	327	void AliAnalysisDataContainer::SetProducer(AliAnalysisTask *prod, Int_t islot)
	328	{
	329	// Set the producer of data. The slot number is required for data type checking.
	330	if (fProducer) {
	331	cout<<"Data container "<<GetName()<<" already has a producer: "<<fProducer->GetName()<<endl;
	332	//AliWarning(Form("Data container %s already has a producer: %s",GetName(),fProducer->GetName()));
	333	}
	334	if (fDataReady) {
	335	cout<<GetName()<<" container contains data - cannot change producer!"<<endl;
	336	//AliError(Form("%s container contains data - cannot change producer!", GetName()));
	337	return;
	338	}
	339	AliAnalysisDataSlot *slot = prod->GetOutputSlot(islot);
	340	if (!slot) {
	341	cout<<"Producer task "<<prod->GetName()<<" does not have an output #"<<islot<<endl;
	342	//AliError(Form("Producer task %s does not have an output #%i", prod->GetName(),islot));
	343	return;
	344	}
	345	if (!slot->GetType()->InheritsFrom(GetType())) {
	346	cout<<"Data type "<<slot->GetTitle()<<"for output slot "<<islot<<" of task "<<prod->GetName()<<" does not match container type "<<GetTitle()<<endl;
	347	//AliError(Form("Data type %s for output slot %i of task %s does not match container type %s", slot->GetType()->GetName(),islot,prod->GetName(),fType->GetName()));
	348	return;
	349	}
	350
	351	fProducer = prod;
	352	// Add all consumers as daughter tasks
	353	TIter next(fConsumers);
	354	AliAnalysisTask *cons;
	355	while ((cons=(AliAnalysisTask*)next())) {
	356	if (!prod->GetListOfTasks()->FindObject(cons)) prod->Add(cons);
	357	}
	358	}
	359
	360	//______________________________________________________________________________
	361	AliAnalysisDataWrapper *AliAnalysisDataContainer::ExportData() const
	362	{
	363	// Wraps data for sending it through the net.
	364	AliAnalysisDataWrapper *pack = 0;
	365	if (!fData) return pack;
	366	pack = new AliAnalysisDataWrapper(fData);
	367	pack->SetName(fName.Data());
	368	return pack;
	369	}
	370
	371	//______________________________________________________________________________
	372	void AliAnalysisDataContainer::ImportData(AliAnalysisDataWrapper *pack)
	373	{
	374	// Unwraps data from a data wrapper.
	375	if (pack) {
	376	fData = pack->Data();
	377	fDataReady = kTRUE;
	378	}
	379	}
	380
	381	ClassImp (AliAnalysisDataWrapper)
	382
	383	//______________________________________________________________________________
	384	AliAnalysisDataWrapper &AliAnalysisDataWrapper::operator=(const AliAnalysisDataWrapper &other)
	385	{
	386	// Assignment.
	387	if (&other != this) {
	388	TNamed::operator=(other);
	389	fData = other.fData;
	390	}
	391	return *this;
	392	}
	393
	394	//______________________________________________________________________________
	395	Long64_t AliAnalysisDataWrapper::Merge(TCollection *list)
	396	{
	397	// Merge a list of containers with this one. Containers in the list must have
	398	// data of the same type.
	399	if (!fData) return 0;
	400	if (!list \|\| list->IsEmpty()) return 1;
	401
	402	printf("Merging %d data wrappers %s\n", list->GetSize()+1, GetName());
	403	TMethodCall callEnv;
	404	if (fData->InheritsFrom(TSeqCollection::Class())) {
	405	TSeqCollection coll = (TSeqCollection)fData;
	406	if (coll->IsEmpty()) return 0;
	407	Int_t nentries = coll->GetEntries();
	408	AliAnalysisDataWrapper *top;
	409	TIter next(list);
	410	TSeqCollection *collcrt = 0;
	411	TList *list1 = 0;
	412	for (Int_t i=0; i<nentries; i++) {
	413	list1 = new TList();
	414	top = new AliAnalysisDataWrapper(coll->At(i));
	415	next.Reset();
	416	while ((collcrt=(TSeqCollection*)next()))
	417	list1->Add(new AliAnalysisDataWrapper(collcrt->At(i)));
	418	if (!top->Merge(list1)) {
	419	list1->Delete();
	420	delete list1;
	421	return 0;
	422	}
	423	list1->Delete();
	424	delete list1;
	425	}
	426	return nentries;
	427	}
	428
	429	if (fData->IsA())
	430	callEnv.InitWithPrototype(fData->IsA(), "Merge", "TCollection*");
	431	if (!callEnv.IsValid()) {
	432	cout << "No merge interface for data stored by " << GetName() << ". Merging not possible !" << endl;
	433	return 1;
	434	}
	435
	436	TIter next(list);
	437	AliAnalysisDataWrapper *cont;
	438	// Make a list where to temporary store the data to be merged.
	439	TList *collectionData = new TList();
	440	Int_t count = 0; // object counter
	441	while ((cont=(AliAnalysisDataWrapper*)next())) {
	442	TObject *data = cont->Data();
	443	if (!data) continue;
	444	if (strcmp(cont->GetName(), GetName())) continue;
	445	collectionData->Add(data);
	446	count++;
	447	}
	448	callEnv.SetParam((Long_t) collectionData);
	449	callEnv.Execute(fData);
	450	delete collectionData;
	451
	452	return count+1;
	453	}