[u/mrichter/AliRoot.git] / ANALYSIS / AliAnalysisTask.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

//==============================================================================
//   AliAnalysysTask - Class representing a basic analysis task. Any
// user-defined task should derive from it and implement the Exec() virtual
// method.
//==============================================================================
//
// A specific user analysis task have to derive from this class. The list of
// specific input and output slots have to be defined in the derived class ctor:
//
//   UserTask::UserTask(name, title)
//   {
//      DefineInput(0, TTree::Class());
//      DefineInput(1, TH1::Class());
//      ...
//      DefineOutput(0, TTree::Class());
//      DefineOutput(1, MyObject::Class());
//      ...
//   }
//
// An existing data contaner (AliAnalysisDataContainer) can be connected to the
// input/output slots of an analysis task. Containers should not be defined and
// connected by the derived analysis task, but from the level of AliAnalysisManager:
//
//   AliAnalysisManager::ConnectInput(AliAnalysisTask *task, Int_t islot,
//                                   AliAnalysisDataContainer *cont)
//   AliAnalysisManager::ConnectOutput(AliAnalysisTask *task, Int_t islot,
//                                    AliAnalysisDataContainer *cont)
// To connect a slot to a data container, the data types declared by both must
// match.
//==============================================================================

#include "TClass.h"

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

ClassImp(AliAnalysisTask)

//______________________________________________________________________________
AliAnalysisTask::AliAnalysisTask()
                :fReady(kFALSE),
                 fNinputs(0),
                 fNoutputs(0),
                 fOutputReady(NULL),
                 fPublishedData(NULL),
                 fInputs(NULL),
                 fOutputs(NULL)
{
// Default constructor.
}

//______________________________________________________________________________
AliAnalysisTask::AliAnalysisTask(const char *name, const char *title)
                :TTask(name,title),
                 fReady(kFALSE),
                 fNinputs(0),
                 fNoutputs(0),
                 fOutputReady(NULL),
                 fPublishedData(NULL),
                 fInputs(NULL),
                 fOutputs(NULL)                 
{
// Constructor.
   fInputs      = new TObjArray(2);
   fOutputs     = new TObjArray(2);
}

//______________________________________________________________________________
AliAnalysisTask::AliAnalysisTask(const AliAnalysisTask &task)
                :TTask(task),
                 fReady(task.fReady),
                 fNinputs(task.fNinputs),
                 fNoutputs(task.fNoutputs),                 
                 fOutputReady(NULL),
                 fPublishedData(NULL),
                 fInputs(NULL),
                 fOutputs(NULL)                 
{
// Copy ctor.
   fInputs      = new TObjArray((fNinputs)?fNinputs:2);
   fOutputs     = new TObjArray((fNoutputs)?fNoutputs:2);
   fPublishedData = 0;
   Int_t i;
   for (i=0; i<fNinputs; i++) fInputs->AddAt(task.GetInputSlot(i),i);
   fOutputReady = new Bool_t[(fNoutputs)?fNoutputs:2];
   for (i=0; i<fNoutputs; i++) {
      fOutputReady[i] = IsOutputReady(i);
      fOutputs->AddAt(task.GetOutputSlot(i),i);
   }   
}

//______________________________________________________________________________
AliAnalysisTask::~AliAnalysisTask()
{
// Dtor.
   if (fInputs)  {fInputs->Delete(); delete fInputs;}
   if (fOutputs) {fOutputs->Delete(); delete fOutputs;}
}   
  
//______________________________________________________________________________
AliAnalysisTask& AliAnalysisTask::operator=(const AliAnalysisTask& task)
{
// Assignment
   if (&task == this) return *this;
   TTask::operator=(task);
   fReady       = task.IsReady();
   fNinputs     = task.GetNinputs();
   fNoutputs    = task.GetNoutputs();
   fInputs      = new TObjArray((fNinputs)?fNinputs:2);
   fOutputs     = new TObjArray((fNoutputs)?fNoutputs:2);
   fPublishedData = 0;
   Int_t i;
   for (i=0; i<fNinputs; i++) fInputs->AddAt(new AliAnalysisDataSlot(*task.GetInputSlot(i)),i);
   fOutputReady = new Bool_t[(fNoutputs)?fNoutputs:2];
   for (i=0; i<fNoutputs; i++) {
      fOutputReady[i] = IsOutputReady(i);
      fOutputs->AddAt(new AliAnalysisDataSlot(*task.GetOutputSlot(i)),i);
   }         
   return *this;
}

//______________________________________________________________________________
Bool_t AliAnalysisTask::AreSlotsConnected()
{
// Check if all input/output slots are connected. If this is the case fReady=true
   fReady = kFALSE;
   if (!fNinputs || !fNoutputs) return kFALSE;
   Int_t i;
   AliAnalysisDataSlot *slot;
   for (i=0; i<fNinputs; i++) {
      slot = (AliAnalysisDataSlot*)fInputs->At(i);
      if (!slot) {
         AliError(Form("Input slot %i of task %s not defined !",i,GetName()));
         return kFALSE;
      }   
      if (!slot->IsConnected()) return kFALSE;
   }   
   for (i=0; i<fNoutputs; i++) {
      slot = (AliAnalysisDataSlot*)fOutputs->At(i);
      if (!slot) {
         AliError(Form("Output slot %i of task %s not defined !",i,GetName()));
         return kFALSE;
      }   
      if (!slot->IsConnected()) return kFALSE;
   } 
   fReady = kTRUE;  
   return kTRUE;
}

//______________________________________________________________________________
void AliAnalysisTask::CheckNotify()
{
// Check if data is available from all inputs. Change the status of the task
// accordingly. This method is called automatically for all tasks connected
// to a container where the data was published.
   for (Int_t islot=0; islot<fNinputs; islot++) {
      if (!GetInputData(islot)) {
         SetActive(kFALSE);
         return;
      }   
   }   
   SetActive(kTRUE);
}

//______________________________________________________________________________
Bool_t AliAnalysisTask::ConnectInput(Int_t islot, AliAnalysisDataContainer *cont)
{
// Connect an input slot to a data container.
   AliAnalysisDataSlot *input = GetInputSlot(islot);
   if (!input) {
      AliError(Form("Input slot %i not defined for analysis task %s", islot, GetName()));
      return kFALSE;
   }
   // Check type matching          
   if (!input->GetType()->InheritsFrom(cont->GetType())) {
      AliError(Form("Data type %s for input %i of task %s not matching container %s of type %s",
               input->GetType()->GetName(), islot, GetName(), cont->GetName(), cont->GetType()->GetName()));
      return kFALSE;
   }  
   // Connect the slot to the container as input          
   if (!input->ConnectContainer(cont)) return kFALSE;
   // Add this to the list of container consumers
   cont->AddConsumer(this, islot);
   AreSlotsConnected();
   return kTRUE;
}   

//______________________________________________________________________________
Bool_t AliAnalysisTask::ConnectOutput(Int_t islot, AliAnalysisDataContainer *cont)
{
// Connect an output slot to a data container.
   AliAnalysisDataSlot *output = GetOutputSlot(islot);
   if (!output) {
      AliError(Form("Output slot %i not defined for analysis task %s", islot, GetName()));
      return kFALSE;
   }
   // Check type matching          
   if (!output->GetType()->InheritsFrom(cont->GetType())) {
      AliError(Form("Data type %s for output %i of task %s not matching container %s of type %s",
               output->GetType()->GetName(), islot, GetName(), cont->GetName(), cont->GetType()->GetName()));
      return kFALSE;
   }            
   // Connect the slot to the container as output         
   if (!output->ConnectContainer(cont)) return kFALSE;
   // Declare this as the data producer
   cont->SetProducer(this, islot);
   AreSlotsConnected();
   return kTRUE;
}   

//______________________________________________________________________________
void AliAnalysisTask::DefineInput(Int_t islot, TClass *type)
{
// Define an input slot and its type.
   AliAnalysisDataSlot *input = new AliAnalysisDataSlot(type, this);
   if (fNinputs<islot+1) fNinputs = islot+1;
   fInputs->AddAtAndExpand(input, islot);
}

//______________________________________________________________________________
void AliAnalysisTask::DefineOutput(Int_t islot, TClass *type)
{
// Define an output slot and its type.
   if (islot<0) {
      AliError(Form("Cannot define negative output slot number for task %s", GetName()));
      return;
   }   
   AliAnalysisDataSlot *output = new AliAnalysisDataSlot(type, this);
   if (fNoutputs<islot+1) {
      fNoutputs = islot+1;
      if (fOutputReady) delete [] fOutputReady;
      fOutputReady = new Bool_t[fNoutputs];
      memset(fOutputReady, 0, fNoutputs*sizeof(Bool_t));
   } 
   fOutputs->AddAtAndExpand(output, islot);
}

//______________________________________________________________________________
TClass *AliAnalysisTask::GetInputType(Int_t islot) const
{
// Retreive type of a given input slot.
   AliAnalysisDataSlot *input = GetInputSlot(islot);
   if (!input) {
      AliError(Form("Input slot %i not defined for analysis task %s", islot, GetName()));
      return NULL;
   }
   return (input->GetType());
}

//______________________________________________________________________________
TClass *AliAnalysisTask::GetOutputType(Int_t islot) const
{
// Retreive type of a given output slot.
   AliAnalysisDataSlot *output = GetOutputSlot(islot);
   if (!output) {
      AliError(Form("Output slot %i not defined for analysis task %s", islot, GetName()));
      return NULL;
   }
   return (output->GetType());
}

//______________________________________________________________________________
TObject *AliAnalysisTask::GetInputData(Int_t islot) const
{
// Retreive input data for a slot if ready. Normally called by Exec() and
// the object has to be statically cast to the appropriate type.
   AliAnalysisDataSlot *input = GetInputSlot(islot);
   if (!input) {
      AliError(Form("Input slot %i not defined for analysis task %s", islot, GetName()));
      return NULL;
   }
   return (input->GetData()); 
}

//______________________________________________________________________________
Bool_t AliAnalysisTask::PostData(Int_t iout, TObject *data, Option_t *option)
{
// Post output data for a given ouput slot in the corresponding data container.
// Published data becomes owned by the data container.
// If option is specified, the container connected to the output slot must have
// an associated file name defined. The option represents the method to open the file.
   fPublishedData = 0;
   AliAnalysisDataSlot *output = GetOutputSlot(iout);
   if (!output) {
      AliError(Form("Output slot %i not defined for analysis task %s", iout, GetName()));
      return kFALSE;
   }
   if (!output->IsConnected()) {
      AliError(Form("Output slot %i of analysis task %s not connected to any data container", iout, GetName()));
      return kFALSE;
   }
   if (!fOutputReady) {
      fOutputReady = new Bool_t[fNoutputs];
      memset(fOutputReady, 0, fNoutputs*sizeof(Bool_t));
   }   
   fOutputReady[iout] = kTRUE;
   fPublishedData = data;
   return (output->GetContainer()->SetData(data, option));
}

//______________________________________________________________________________
void AliAnalysisTask::SetUsed(Bool_t flag)
{
// Set 'used' flag recursively to task and all daughter tasks.
   if (TestBit(kTaskUsed)==flag) return;
   TObject::SetBit(kTaskUsed,flag);
   Int_t nd = fTasks->GetSize();
   AliAnalysisTask *task;
   for (Int_t i=0; i<nd; i++) {
      task = (AliAnalysisTask*)fTasks->At(i);
      task->SetUsed(flag);
   }
}   

//______________________________________________________________________________
Bool_t AliAnalysisTask::CheckCircularDeps()
{
// Check for illegal circular dependencies, e.g. a daughter task should not have
// a hierarchical parent as subtask.
   if (IsChecked()) return kTRUE;
   SetChecked();
   TList *tasks = GetListOfTasks();
   Int_t ntasks = tasks->GetSize();
   AliAnalysisTask *task;
   for (Int_t i=0; i<ntasks; i++) {
      task = (AliAnalysisTask*)tasks->At(i);
      if (task->CheckCircularDeps()) return kTRUE;
   }
   SetChecked(kFALSE);
   return kFALSE;
}   
   
//______________________________________________________________________________
void AliAnalysisTask::PrintTask(Option_t *option, Int_t indent) const
{
// Print task info.
   AliAnalysisTask *thistask = (AliAnalysisTask*)this;
   TString opt(option);
   opt.ToLower();
   Bool_t dep = (opt.Contains("dep"))?kTRUE:kFALSE;
   TString ind;
   Int_t islot;
   AliAnalysisDataContainer *cont;
   for (Int_t i=0; i<indent; i++) ind += " ";
   if (!dep || (dep && IsChecked())) {
      printf("%s\n", Form("%stask: %s  ACTIVE=%i", ind.Data(), GetName(),IsActive()));
      if (dep) thistask->SetChecked(kFALSE);
      else {
         for (islot=0; islot<fNinputs; islot++) {
            printf("%s", Form("%s   INPUT #%i: %s <- ",ind.Data(),islot, GetInputType(islot)->GetName()));
            cont = GetInputSlot(islot)->GetContainer();
            if (cont) printf(" [%s]\n", cont->GetName());
            else printf(" [NO CONTAINER]\n");
         }
         for (islot=0; islot<fNoutputs; islot++) {
            printf("%s", Form("%s   OUTPUT #%i: %s -> ",ind.Data(),islot, GetOutputType(islot)->GetName()));
            cont = GetOutputSlot(islot)->GetContainer();
            if (cont) printf(" [%s]\n", cont->GetName());
            else printf(" [NO CONTAINER]\n");
         }            
      }
   }
   PrintContainers(option, indent+3);
}      

//______________________________________________________________________________
void AliAnalysisTask::PrintContainers(Option_t *option, Int_t indent) const
{
// Print containers info.
   AliAnalysisDataContainer *cont;
   TString ind;
   for (Int_t i=0; i<indent; i++) ind += " ";
   Int_t islot;
   for (islot=0; islot<fNoutputs; islot++) {
      cont = GetOutputSlot(islot)->GetContainer();
      cont->PrintContainer(option, indent);
   }   
}
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	// AliAnalysysTask - Class representing a basic analysis task. Any
	21	// user-defined task should derive from it and implement the Exec() virtual
	22	// method.
	23	//==============================================================================
	24	//
	25	// A specific user analysis task have to derive from this class. The list of
	26	// specific input and output slots have to be defined in the derived class ctor:
	27	//
	28	// UserTask::UserTask(name, title)
	29	// {
	30	// DefineInput(0, TTree::Class());
	31	// DefineInput(1, TH1::Class());
	32	// ...
	33	// DefineOutput(0, TTree::Class());
	34	// DefineOutput(1, MyObject::Class());
	35	// ...
	36	// }
	37	//
	38	// An existing data contaner (AliAnalysisDataContainer) can be connected to the
	39	// input/output slots of an analysis task. Containers should not be defined and
	40	// connected by the derived analysis task, but from the level of AliAnalysisManager:
	41	//
	42	// AliAnalysisManager::ConnectInput(AliAnalysisTask *task, Int_t islot,
	43	// AliAnalysisDataContainer *cont)
	44	// AliAnalysisManager::ConnectOutput(AliAnalysisTask *task, Int_t islot,
	45	// AliAnalysisDataContainer *cont)
	46	// To connect a slot to a data container, the data types declared by both must
	47	// match.
	48	//==============================================================================
	49
	50	#include "TClass.h"
	51
	52	#include "AliLog.h"
	53	#include "AliAnalysisTask.h"
	54	#include "AliAnalysisDataSlot.h"
	55	#include "AliAnalysisDataContainer.h"
	56
	57	ClassImp(AliAnalysisTask)
	58
	59	//______________________________________________________________________________
	60	AliAnalysisTask::AliAnalysisTask()
	61	:fReady(kFALSE),
	62	fNinputs(0),
	63	fNoutputs(0),
	64	fOutputReady(NULL),
	65	fPublishedData(NULL),
	66	fInputs(NULL),
	67	fOutputs(NULL)
	68	{
	69	// Default constructor.
	70	}
	71
	72	//______________________________________________________________________________
	73	AliAnalysisTask::AliAnalysisTask(const char name, const char title)
	74	:TTask(name,title),
	75	fReady(kFALSE),
	76	fNinputs(0),
	77	fNoutputs(0),
	78	fOutputReady(NULL),
	79	fPublishedData(NULL),
	80	fInputs(NULL),
	81	fOutputs(NULL)
	82	{
	83	// Constructor.
	84	fInputs = new TObjArray(2);
	85	fOutputs = new TObjArray(2);
	86	}
	87
	88	//______________________________________________________________________________
	89	AliAnalysisTask::AliAnalysisTask(const AliAnalysisTask &task)
	90	:TTask(task),
	91	fReady(task.fReady),
	92	fNinputs(task.fNinputs),
	93	fNoutputs(task.fNoutputs),
	94	fOutputReady(NULL),
	95	fPublishedData(NULL),
	96	fInputs(NULL),
	97	fOutputs(NULL)
	98	{
	99	// Copy ctor.
	100	fInputs = new TObjArray((fNinputs)?fNinputs:2);
	101	fOutputs = new TObjArray((fNoutputs)?fNoutputs:2);
	102	fPublishedData = 0;
	103	Int_t i;
	104	for (i=0; i<fNinputs; i++) fInputs->AddAt(task.GetInputSlot(i),i);
	105	fOutputReady = new Bool_t[(fNoutputs)?fNoutputs:2];
	106	for (i=0; i<fNoutputs; i++) {
	107	fOutputReady[i] = IsOutputReady(i);
	108	fOutputs->AddAt(task.GetOutputSlot(i),i);
	109	}
	110	}
	111
	112	//______________________________________________________________________________
	113	AliAnalysisTask::~AliAnalysisTask()
	114	{
	115	// Dtor.
	116	if (fInputs) {fInputs->Delete(); delete fInputs;}
	117	if (fOutputs) {fOutputs->Delete(); delete fOutputs;}
	118	}
	119
	120	//______________________________________________________________________________
	121	AliAnalysisTask& AliAnalysisTask::operator=(const AliAnalysisTask& task)
	122	{
	123	// Assignment
	124	if (&task == this) return *this;
	125	TTask::operator=(task);
	126	fReady = task.IsReady();
	127	fNinputs = task.GetNinputs();
	128	fNoutputs = task.GetNoutputs();
	129	fInputs = new TObjArray((fNinputs)?fNinputs:2);
	130	fOutputs = new TObjArray((fNoutputs)?fNoutputs:2);
	131	fPublishedData = 0;
	132	Int_t i;
	133	for (i=0; i<fNinputs; i++) fInputs->AddAt(new AliAnalysisDataSlot(*task.GetInputSlot(i)),i);
	134	fOutputReady = new Bool_t[(fNoutputs)?fNoutputs:2];
	135	for (i=0; i<fNoutputs; i++) {
	136	fOutputReady[i] = IsOutputReady(i);
	137	fOutputs->AddAt(new AliAnalysisDataSlot(*task.GetOutputSlot(i)),i);
	138	}
	139	return *this;
	140	}
	141
	142	//______________________________________________________________________________
	143	Bool_t AliAnalysisTask::AreSlotsConnected()
	144	{
	145	// Check if all input/output slots are connected. If this is the case fReady=true
	146	fReady = kFALSE;
	147	if (!fNinputs \|\| !fNoutputs) return kFALSE;
	148	Int_t i;
	149	AliAnalysisDataSlot *slot;
	150	for (i=0; i<fNinputs; i++) {
	151	slot = (AliAnalysisDataSlot*)fInputs->At(i);
	152	if (!slot) {
	153	AliError(Form("Input slot %i of task %s not defined !",i,GetName()));
	154	return kFALSE;
	155	}
	156	if (!slot->IsConnected()) return kFALSE;
	157	}
	158	for (i=0; i<fNoutputs; i++) {
	159	slot = (AliAnalysisDataSlot*)fOutputs->At(i);
	160	if (!slot) {
	161	AliError(Form("Output slot %i of task %s not defined !",i,GetName()));
	162	return kFALSE;
	163	}
	164	if (!slot->IsConnected()) return kFALSE;
	165	}
	166	fReady = kTRUE;
	167	return kTRUE;
	168	}
	169
	170	//______________________________________________________________________________
	171	void AliAnalysisTask::CheckNotify()
	172	{
	173	// Check if data is available from all inputs. Change the status of the task
	174	// accordingly. This method is called automatically for all tasks connected
	175	// to a container where the data was published.
	176	for (Int_t islot=0; islot<fNinputs; islot++) {
	177	if (!GetInputData(islot)) {
	178	SetActive(kFALSE);
	179	return;
	180	}
	181	}
	182	SetActive(kTRUE);
	183	}
	184
	185	//______________________________________________________________________________
	186	Bool_t AliAnalysisTask::ConnectInput(Int_t islot, AliAnalysisDataContainer *cont)
	187	{
	188	// Connect an input slot to a data container.
	189	AliAnalysisDataSlot *input = GetInputSlot(islot);
	190	if (!input) {
	191	AliError(Form("Input slot %i not defined for analysis task %s", islot, GetName()));
	192	return kFALSE;
	193	}
	194	// Check type matching
	195	if (!input->GetType()->InheritsFrom(cont->GetType())) {
	196	AliError(Form("Data type %s for input %i of task %s not matching container %s of type %s",
	197	input->GetType()->GetName(), islot, GetName(), cont->GetName(), cont->GetType()->GetName()));
	198	return kFALSE;
	199	}
	200	// Connect the slot to the container as input
	201	if (!input->ConnectContainer(cont)) return kFALSE;
	202	// Add this to the list of container consumers
	203	cont->AddConsumer(this, islot);
	204	AreSlotsConnected();
	205	return kTRUE;
	206	}
	207
	208	//______________________________________________________________________________
	209	Bool_t AliAnalysisTask::ConnectOutput(Int_t islot, AliAnalysisDataContainer *cont)
	210	{
	211	// Connect an output slot to a data container.
	212	AliAnalysisDataSlot *output = GetOutputSlot(islot);
	213	if (!output) {
	214	AliError(Form("Output slot %i not defined for analysis task %s", islot, GetName()));
	215	return kFALSE;
	216	}
	217	// Check type matching
	218	if (!output->GetType()->InheritsFrom(cont->GetType())) {
	219	AliError(Form("Data type %s for output %i of task %s not matching container %s of type %s",
	220	output->GetType()->GetName(), islot, GetName(), cont->GetName(), cont->GetType()->GetName()));
	221	return kFALSE;
	222	}
	223	// Connect the slot to the container as output
	224	if (!output->ConnectContainer(cont)) return kFALSE;
	225	// Declare this as the data producer
	226	cont->SetProducer(this, islot);
	227	AreSlotsConnected();
	228	return kTRUE;
	229	}
	230
	231	//______________________________________________________________________________
	232	void AliAnalysisTask::DefineInput(Int_t islot, TClass *type)
	233	{
	234	// Define an input slot and its type.
	235	AliAnalysisDataSlot *input = new AliAnalysisDataSlot(type, this);
	236	if (fNinputs<islot+1) fNinputs = islot+1;
	237	fInputs->AddAtAndExpand(input, islot);
	238	}
	239
	240	//______________________________________________________________________________
	241	void AliAnalysisTask::DefineOutput(Int_t islot, TClass *type)
	242	{
	243	// Define an output slot and its type.
	244	if (islot<0) {
	245	AliError(Form("Cannot define negative output slot number for task %s", GetName()));
	246	return;
	247	}
	248	AliAnalysisDataSlot *output = new AliAnalysisDataSlot(type, this);
	249	if (fNoutputs<islot+1) {
	250	fNoutputs = islot+1;
	251	if (fOutputReady) delete [] fOutputReady;
	252	fOutputReady = new Bool_t[fNoutputs];
	253	memset(fOutputReady, 0, fNoutputs*sizeof(Bool_t));
	254	}
	255	fOutputs->AddAtAndExpand(output, islot);
	256	}
	257
	258	//______________________________________________________________________________
	259	TClass *AliAnalysisTask::GetInputType(Int_t islot) const
	260	{
	261	// Retreive type of a given input slot.
	262	AliAnalysisDataSlot *input = GetInputSlot(islot);
	263	if (!input) {
	264	AliError(Form("Input slot %i not defined for analysis task %s", islot, GetName()));
	265	return NULL;
	266	}
	267	return (input->GetType());
	268	}
	269
	270	//______________________________________________________________________________
	271	TClass *AliAnalysisTask::GetOutputType(Int_t islot) const
	272	{
	273	// Retreive type of a given output slot.
	274	AliAnalysisDataSlot *output = GetOutputSlot(islot);
	275	if (!output) {
	276	AliError(Form("Output slot %i not defined for analysis task %s", islot, GetName()));
	277	return NULL;
	278	}
	279	return (output->GetType());
	280	}
	281
	282	//______________________________________________________________________________
	283	TObject *AliAnalysisTask::GetInputData(Int_t islot) const
	284	{
	285	// Retreive input data for a slot if ready. Normally called by Exec() and
	286	// the object has to be statically cast to the appropriate type.
	287	AliAnalysisDataSlot *input = GetInputSlot(islot);
	288	if (!input) {
	289	AliError(Form("Input slot %i not defined for analysis task %s", islot, GetName()));
	290	return NULL;
	291	}
	292	return (input->GetData());
	293	}
	294
	295	//______________________________________________________________________________
	296	Bool_t AliAnalysisTask::PostData(Int_t iout, TObject data, Option_t option)
	297	{
	298	// Post output data for a given ouput slot in the corresponding data container.
	299	// Published data becomes owned by the data container.
	300	// If option is specified, the container connected to the output slot must have
	301	// an associated file name defined. The option represents the method to open the file.
	302	fPublishedData = 0;
	303	AliAnalysisDataSlot *output = GetOutputSlot(iout);
	304	if (!output) {
	305	AliError(Form("Output slot %i not defined for analysis task %s", iout, GetName()));
	306	return kFALSE;
	307	}
	308	if (!output->IsConnected()) {
	309	AliError(Form("Output slot %i of analysis task %s not connected to any data container", iout, GetName()));
	310	return kFALSE;
	311	}
	312	if (!fOutputReady) {
	313	fOutputReady = new Bool_t[fNoutputs];
	314	memset(fOutputReady, 0, fNoutputs*sizeof(Bool_t));
	315	}
	316	fOutputReady[iout] = kTRUE;
	317	fPublishedData = data;
	318	return (output->GetContainer()->SetData(data, option));
	319	}
	320
	321	//______________________________________________________________________________
	322	void AliAnalysisTask::SetUsed(Bool_t flag)
	323	{
	324	// Set 'used' flag recursively to task and all daughter tasks.
	325	if (TestBit(kTaskUsed)==flag) return;
	326	TObject::SetBit(kTaskUsed,flag);
	327	Int_t nd = fTasks->GetSize();
	328	AliAnalysisTask *task;
	329	for (Int_t i=0; i<nd; i++) {
	330	task = (AliAnalysisTask*)fTasks->At(i);
	331	task->SetUsed(flag);
	332	}
	333	}
	334
	335	//______________________________________________________________________________
	336	Bool_t AliAnalysisTask::CheckCircularDeps()
	337	{
	338	// Check for illegal circular dependencies, e.g. a daughter task should not have
	339	// a hierarchical parent as subtask.
	340	if (IsChecked()) return kTRUE;
	341	SetChecked();
	342	TList *tasks = GetListOfTasks();
	343	Int_t ntasks = tasks->GetSize();
	344	AliAnalysisTask *task;
	345	for (Int_t i=0; i<ntasks; i++) {
	346	task = (AliAnalysisTask*)tasks->At(i);
	347	if (task->CheckCircularDeps()) return kTRUE;
	348	}
	349	SetChecked(kFALSE);
	350	return kFALSE;
	351	}
	352
	353	//______________________________________________________________________________
	354	void AliAnalysisTask::PrintTask(Option_t *option, Int_t indent) const
	355	{
	356	// Print task info.
	357	AliAnalysisTask thistask = (AliAnalysisTask)this;
	358	TString opt(option);
	359	opt.ToLower();
	360	Bool_t dep = (opt.Contains("dep"))?kTRUE:kFALSE;
	361	TString ind;
	362	Int_t islot;
	363	AliAnalysisDataContainer *cont;
	364	for (Int_t i=0; i<indent; i++) ind += " ";
	365	if (!dep \|\| (dep && IsChecked())) {
	366	printf("%s\n", Form("%stask: %s ACTIVE=%i", ind.Data(), GetName(),IsActive()));
	367	if (dep) thistask->SetChecked(kFALSE);
	368	else {
	369	for (islot=0; islot<fNinputs; islot++) {
	370	printf("%s", Form("%s INPUT #%i: %s <- ",ind.Data(),islot, GetInputType(islot)->GetName()));
	371	cont = GetInputSlot(islot)->GetContainer();
	372	if (cont) printf(" [%s]\n", cont->GetName());
	373	else printf(" [NO CONTAINER]\n");
	374	}
	375	for (islot=0; islot<fNoutputs; islot++) {
	376	printf("%s", Form("%s OUTPUT #%i: %s -> ",ind.Data(),islot, GetOutputType(islot)->GetName()));
	377	cont = GetOutputSlot(islot)->GetContainer();
	378	if (cont) printf(" [%s]\n", cont->GetName());
	379	else printf(" [NO CONTAINER]\n");
	380	}
	381	}
	382	}
	383	PrintContainers(option, indent+3);
	384	}
	385
	386	//______________________________________________________________________________
	387	void AliAnalysisTask::PrintContainers(Option_t *option, Int_t indent) const
	388	{
	389	// Print containers info.
	390	AliAnalysisDataContainer *cont;
	391	TString ind;
	392	for (Int_t i=0; i<indent; i++) ind += " ";
	393	Int_t islot;
	394	for (islot=0; islot<fNoutputs; islot++) {
	395	cont = GetOutputSlot(islot)->GetContainer();
	396	cont->PrintContainer(option, indent);
	397	}
	398	}