/**
 * @file   key.hpp
 * @author Julian Iseringhausen <isering@ins.uni-bonn.de>
 * @date   Mon Nov 21 13:27:22 2011
 *
 * @brief  Class to distinguish the different entities in maps.
 *
 */

#ifndef KEY_HPP_
#define KEY_HPP_

#ifndef HAVE_MPI
#error MPI is needed to compile this class
#endif /* HAVE_MPI */

#include <vector>

namespace VMG
{

class Grid;
class Index;

namespace MPI
{

class Key {
public:
  Key();
  Key(const VMG::MPI::Key& other);
  Key(const Grid& grid);
  Key(const Grid& grid_1, const Grid& grid_2);
  Key(const Index& i1, const Index& i2, const Index& i3);

  void AddKey(const Grid& grid);
  void AddKey(const Index& index);
  void AddKey(const int& i);
  void AddKey(const void* addr);

  bool operator<(const Key& other) const;

private:
  std::vector<int> int_keys;
  std::vector<const void*> addr_keys;
};

}

}

#endif /* KEY_HPP_ */