IDBInitializer.h

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 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
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#ifndef GUM_LEARNING_IDB_INITILIALIZER_H
#define GUM_LEARNING_IDB_INITILIALIZER_H
 
#include <string>
#include <vector>
 
#include <agrum/agrum.h>
 
#include <agrum/base/database/DBCell.h>
#include <agrum/base/database/DBRow.h>
 
namespace gum {
 
  namespace learning {

    class GUM_SHARED_PUBLIC IDBInitializer {
      public:
      enum class InputType : char { STRING, DBCELL };
 
      // ##########################################################################
      // ##########################################################################


      IDBInitializer(const InputType type);

      IDBInitializer(const IDBInitializer& from);

      IDBInitializer(IDBInitializer&& from);

      [[nodiscard]] virtual IDBInitializer* clone() const = 0;

      virtual ~IDBInitializer();

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

      const std::vector< std::string >& variableNames();


      template < class DATABASE >
      void fillDatabase(DATABASE& database, const bool retry_insertion = false);

      std::size_t throwingColumn() const;

 
 
      protected:
      IDBInitializer& operator=(const IDBInitializer& from);

      IDBInitializer& operator=(IDBInitializer&& from);

      virtual std::vector< std::string > variableNames_() = 0;


      virtual const std::vector< std::string >& currentStringRow_();


      virtual const DBRow< DBCell >& currentDBCellRow_();

      virtual bool nextRow_() = 0;
 
 
#ifndef DOXYGEN_SHOULD_SKIP_THIS
 
      private:
      // the names of the variables
      std::vector< std::string > _var_names_;
 
      // the types of the input data read to fill the database
      InputType _input_type_;
 
      // indicates whether an exception was raised when adding the last row
      // into the database. If so, when filling again the database, we may
      // try to insert again the same row
      bool _last_insertion_failed_{false};
 

      template < class DATABASE >
      void _fillDatabaseFromStrings_(DATABASE& database, const bool retry_insertion);

      template < class DATABASE >
      void _fillDatabaseFromDBCells_(DATABASE& database, const bool retry_insertion);
 
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
    };
 
  } /* namespace learning */
 
} /* namespace gum */

#ifndef GUM_NO_INLINE
#  include <agrum/base/database/IDBInitializer_inl.h>
#endif /* GUM_NO_INLINE */
 
// always include the template implementation
#include <agrum/base/database/IDBInitializer_tpl.h>
 
#endif /* GUM_LEARNING_IDB_INITILIALIZER_H */