VirtualEventHandler interface and its implementation AliAODHandler.

[u/mrichter/AliRoot.git] / STEER / AliAODHandler.cxx

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 * Author: The ALICE Off-line Project.                                    *
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/* $Id$ */

//-------------------------------------------------------------------------
//     Implementation of the Virtual Event Handler Interface for AOD
//     Author: Andreas Morsch, CERN
//-------------------------------------------------------------------------

#include <TFile.h>
#include <TTree.h>
#include "AliAODHandler.h"
#include "AliAODEvent.h"

ClassImp(AliAODHandler)

//______________________________________________________________________________
AliAODHandler::AliAODHandler() :
    AliVirtualEventHandler(),
    fAODEvent(NULL),
    fAODFile(NULL)
{
  // default constructor
}

//______________________________________________________________________________
AliAODHandler::AliAODHandler(const char* name, const char* title):
    AliVirtualEventHandler(name, title),
    fAODEvent(NULL),
    fAODFile(NULL)
{
}

//______________________________________________________________________________
AliAODHandler::~AliAODHandler() 
{
// destructor
}


Bool_t AliAODHandler::InitIO()
{
    // Initialize IO
    fAODEvent = new AliAODEvent();
    fAODEvent->CreateStdContent();
//    fAODFile  = new TFile("aod.root", "recreate");
    CreateTree();
    
    return kTRUE;
}

Bool_t AliAODHandler::Fill()
{
    // Fill data structures
    printf(">>>>>>>>>>> AliAODHandler::Fill()\n");
    
    FillTree();
    fAODEvent->ClearStd();
    
    return kTRUE;
}

Bool_t AliAODHandler::Terminate()
{
    // Terminate 
    AddAODtoTreeUserInfo();
    return kTRUE;
}

Bool_t AliAODHandler::TerminateIO()
{
    // Terminate IO

//    fAODFile->cd();
//    fTreeA->Write();
//    fAODFile->Close();
    
    return kTRUE;
}


void AliAODHandler::CreateTree()
{
    // Creates the AOD Tree
    fTreeA = new TTree("AOD", "AliAOD tree");
    fTreeA->Branch(fAODEvent->GetList());
}

void AliAODHandler::FillTree()
{
    // Fill the AOD Tree
    fTreeA->Fill();
}


void AliAODHandler::AddAODtoTreeUserInfo()
{
    // Add aod event to tree user info
    fTreeA->GetUserInfo()->Add(fAODEvent);
}