/*
  Copyright(C) 2011-2016 Brazil

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/

#pragma once

#include "key.hpp"

namespace grn {
namespace dat {

class GRN_DAT_API Cursor {
 public:
  Cursor() {}
  virtual ~Cursor() {}

  virtual void close() = 0;

  virtual const Key &next() = 0;

  virtual UInt32 offset() const = 0;
  virtual UInt32 limit() const = 0;
  virtual UInt32 flags() const = 0;

 private:
  // Disallows copy and assignment.
  Cursor(const Cursor &);
  Cursor &operator=(const Cursor &);
};

}  // namespace dat
}  // namespace grn
