DBRow.h

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#ifndef GUM_LEARNING_DB_ROW_H
#define GUM_LEARNING_DB_ROW_H

#include <cstddef>
#include <cstring>
#include <initializer_list>
#include <memory>
#include <vector>

#include <agrum/agrum.h>

namespace gum {

  namespace learning {

    template < typename T_DATA,
               template < typename > class ALLOC = std::allocator >
    class DBRow {
      public:
      using allocator_type = ALLOC< T_DATA >;

      // ##########################################################################
      // ##########################################################################


      DBRow();

      DBRow(const ALLOC< T_DATA >& alloc);

      DBRow(const std::size_t      size,
            const double           weight = 1.0,
            const ALLOC< T_DATA >& alloc = ALLOC< T_DATA >());

      DBRow(const std::size_t      size,
            const T_DATA           default_value,
            const double           weight,
            const ALLOC< T_DATA >& alloc = ALLOC< T_DATA >());

      DBRow(std::initializer_list< T_DATA > list,
            const double                    weight = 1.0,
            const ALLOC< T_DATA >&          alloc = ALLOC< T_DATA >());

      template < template < typename > class OTHER_ALLOC >
      DBRow(const std::vector< T_DATA, OTHER_ALLOC< T_DATA > >& cells,
            const double                                        weight = 1.0,
            const ALLOC< T_DATA >& alloc = ALLOC< T_DATA >());

      DBRow(std::vector< T_DATA, ALLOC< T_DATA > >&& cells,
            const double                             weight = 1.0,
            const ALLOC< T_DATA >&                   alloc = ALLOC< T_DATA >());

      DBRow(const DBRow< T_DATA, ALLOC >& from);

      DBRow(const DBRow< T_DATA, ALLOC >& from, const ALLOC< T_DATA >& alloc);

      DBRow(DBRow< T_DATA, ALLOC >&& from);

      DBRow(DBRow< T_DATA, ALLOC >&& from, const ALLOC< T_DATA >& alloc);

      DBRow< T_DATA, ALLOC >* clone() const;

      DBRow< T_DATA, ALLOC >* clone(const ALLOC< T_DATA >& alloc) const;

      ~DBRow();



      // ##########################################################################
      // ##########################################################################


      DBRow< T_DATA, ALLOC >& operator=(const DBRow< T_DATA, ALLOC >& from);

      DBRow< T_DATA, ALLOC >& operator=(DBRow< T_DATA, ALLOC >&& from);


      T_DATA& operator[](const std::size_t i);


      const T_DATA& operator[](const std::size_t i) const;



      // ##########################################################################
      // ##########################################################################


      const std::vector< T_DATA, ALLOC< T_DATA > >& row() const noexcept;

      std::vector< T_DATA, ALLOC< T_DATA > >& row() noexcept;

      const double& weight() const noexcept;

      double& weight() noexcept;

      template < template < typename > class OTHER_ALLOC >
      void setRow(const std::vector< T_DATA, OTHER_ALLOC< T_DATA > >& new_row);

      void setRow(std::vector< T_DATA, ALLOC< T_DATA > >&& new_row);

      void setWeight(const double new_weight);

      std::size_t size() const noexcept;

      void resize(const std::size_t new_size);

      void reserve(const std::size_t new_size);

      void pushBack(const T_DATA& elt);

      void pushBack(T_DATA&& elt);

      ALLOC< T_DATA > getAllocator() const;



      protected:
      std::vector< T_DATA, ALLOC< T_DATA > > _row;

      double _weight{1.0f};

      // used for constructors and operators
      template < typename TX_DATA, template < typename > class OTHER_ALLOC >
      friend class DBRow;
    };

  } /* namespace learning */

} /* namespace gum */

#include <agrum/learning/database/DBRow_tpl.h>

#endif /* GUM_LEARNING_DB_ROW_H */