nanodbcParser.h

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/***************************************************************************
 *   Copyright (c) 2005-2024 by Christophe GONZALES(_at_AMU) and Pierre-Henri WUILLEMIN(_at_LIP6)  *
 *   info_at_agrum_dot_org                                               *
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 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
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 ***************************************************************************/
 
#ifdef _ODBC
 
#  ifndef GUM_NANODBC_PARSER_H
#    define GUM_NANODBC_PARSER_H
 
#    include <string>
#    include <cstdlib>
#    include <vector>
#    include <stdexcept>
#    include <sql.h>
 
#    include <agrum/agrum.h>
#    include <agrum/base/external/nanodbc/nanodbc.h>
 
namespace gum {
 
  namespace learning {

    class GUM_SHARED_PUBLIC NanodbcParser {
      public:
      // ##########################################################################
      // ##########################################################################

      NanodbcParser();


      NanodbcParser(nanodbc::connection& connection, const std::string& query);

      virtual ~NanodbcParser();

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


      bool next();


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

      std::size_t nbLine() const;

      std::size_t nbColumns() const;

      std::string columnName(const std::size_t i) const;

      void useNewQuery(nanodbc::connection& connexion, const std::string& query);

 
 
#    ifndef DOXYGEN_SHOULD_SKIP_THIS
 
      private:
      // the result of the last SQL query performed
      nanodbc::result _result_;
 
      // the line number within the current query
      std::size_t _nb_line_{std::size_t(0)};
 
      // a vector that will contain the content of the current line of result
      std::vector< std::string > _data_;
 
#    endif /* DOXYGEN_SHOULD_SKIP_THIS */
    };
 
  }   // namespace learning
 
}   // namespace gum
 
// include the inlined functions if necessary
#ifndef GUM_NO_INLINE
#    include <agrum/base/database/nanodbcParser_inl.h>
#endif /* GUM_NO_INLINE */
 
#  endif   // GUM_NANODBC_PARSER_H
 
#endif   // _ODBC