/*
 * PndEventCombinerTask.h
 *
 *  Created on: May 3, 2017
 *      Author: Steinschaden
 *
 */

 //* Class to combine a defined number of entries ("events") of a branch and buffer this "eventbunches" (or store them) for further use.

#ifndef PndEventCombinerTask_H_
#define PndEventCombinerTask_H_



#include "TClonesArray.h"
#include "FairTask.h"

#include <vector>

class PndEventCombinerTask : public FairTask
{
public:

  /** Default constructor **/
	PndEventCombinerTask();
/** Destructor **/
	virtual ~PndEventCombinerTask();


	 /** Virtual method Init **/
    virtual InitStatus Init();
    //virtual void SetParContainers();
   // virtual InitStatus ReInit();

    /** Virtual method Exec **/
    virtual void Exec(Option_t* opt);

//    virtual void FinishEvent();
//    virtual void FinishTask();

// Set and add the branches for which you want to combine events

    void AddInputBranch(TString branchName){ fInBranches.push_back(branchName);};

 // Set Persistance to kTRUE if you want to store the combined Events. otherwise they are just buffered for the direct use of other tasks in the same run
    void SetPersistence(Bool_t val){ fPersistence = val;};

    // set the number of events you want to combine to one data sample. This also sets the default output name if the combined data are stored ("comb_NEvents_InputBranchName")
    void SetNEvents(Int_t nEvents) {fNEvents = nEvents;};


private:

    std::vector<TString> fInBranches;
    std::vector<TClonesArray*> fInArrays;
    std::vector<TClonesArray*> fTmpArrays;
    std::vector<TClonesArray*> fOutArrays;

    Bool_t fPersistence;
    Int_t fNEvents;



  ClassDef(PndEventCombinerTask,0);


};

#endif /*PndEventCombinerTask_H_*/