TTreeRow.h

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// @(#)root/tree:$Id$
// Author: Fons Rademakers   30/11/99
 
/*************************************************************************
 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
#ifndef ROOT_TTreeRow
#define ROOT_TTreeRow
 
 
//////////////////////////////////////////////////////////////////////////
//                                                                      //
// TTreeRow                                                             //
//                                                                      //
// Class defining interface to a row of a TTree query result.           //
// Objects of this class are created by TTreeResult methods.            //
//                                                                      //
// Related classes are TTreeResult.                                     //
//                                                                      //
//////////////////////////////////////////////////////////////////////////
 
#include "TSQLRow.h"
 
class TTreeRow : public TSQLRow {
 
friend class TTreeResult;
friend class TTreePlayer;
 
private:
   Int_t        fColumnCount;  ///< number of columns in row
   Int_t       *fFields;       ///<[fColumnCount] index in fRow of the end of each field
   char        *fRow;          ///< string with all the fColumnCount fields
   TTreeRow    *fOriginal;     ///<! pointer to original row
 
   TTreeRow(TSQLRow *original);
   bool    IsValid(Int_t field);
 
   TTreeRow(const TTreeRow&) = delete;
   TTreeRow &operator=(const TTreeRow&) = delete;
 
public:
   TTreeRow();
   TTreeRow(Int_t nfields);
   TTreeRow(Int_t nfields, const Int_t *fields, const char *row);
   ~TTreeRow() override;
 
   void        Close(Option_t *option="") override;
   ULong_t     GetFieldLength(Int_t field) override;
   const char *GetField(Int_t field) override;
   void        SetRow(const Int_t *fields, const char *row);
 
   ClassDefOverride(TTreeRow,1)  // One row of a TTree query result
};
 
#endif