TGo4MainTree.h

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// $Id$
//-----------------------------------------------------------------------
//       The GSI Online Offline Object Oriented (Go4) Project
//         Experiment Data Processing at EE department, GSI
//-----------------------------------------------------------------------
// Copyright (C) 2000- GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
//                     Planckstr. 1, 64291 Darmstadt, Germany
// Contact:            http://go4.gsi.de
//-----------------------------------------------------------------------
// This software can be used under the license agreements as stated
// in Go4License.txt file which is part of the distribution.
//-----------------------------------------------------------------------

#ifndef TGO4MAINTREE_H
#define TGO4MAINTREE_H

#include "TObject.h"

class TTree;
class TFile;

class TGo4MainTree : public TObject {
  friend class TGo4TreeSource;
  friend class TGo4TreeStore;

  protected:
    TTree *GetTree() const { return fxTree; }

    TGo4MainTree();

  public:

    virtual ~TGo4MainTree();

    static const char *fgcTREENAME; 

    static const char *fgcFILENAME; 

    static const Int_t fgiCOMPRESS; 

    static const Int_t fgiAUTOSAVESIZE; 

    static TGo4MainTree *Instance();

    static Bool_t Exists() { return fxInstance != nullptr; }

    Int_t GetCurrentIndex() const { return fiCurrentIndex; }

    Int_t IncCurrentIndex() { return ++fiCurrentIndex; }

    void SetCurrentIndex(Int_t number = 0) { fiCurrentIndex = number; }

    Int_t GetMaxIndex();

    void SetAutoSave(Int_t bytesinterval);

    void Update();

    Int_t Write(const char *dummy = nullptr, Int_t option = 0, Int_t bufsize = 0) override;
    Int_t Write(const char *dummy = nullptr, Int_t option = 0, Int_t bufsize = 0) const override;

  private:

    static TGo4MainTree *fxInstance; 

    TFile *fxFile{nullptr}; 

    TTree *fxTree{nullptr}; 

    Int_t fiMaxIndex{0};

    Int_t fiCurrentIndex{0};

  ClassDefOverride(TGo4MainTree,1)
};

#endif //TGO4MAINTREE_H