dindexer/src/pq/resultinfo.hpp

/* Copyright 2015, Michele Santullo
 * This file is part of "dindexer".
 *
 * "dindexer" is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * "dindexer" 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with "dindexer".  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef idB756FAED6EE34FB18E302528CEA7C1D7
#define idB756FAED6EE34FB18E302528CEA7C1D7

#include <libpq-fe.h>
#include <map>
#include <string>
#include <memory>

namespace pq {
	struct ResultInfo {
		typedef std::unique_ptr<PGresult, void(*)(PGresult*)> PGResultPtr;

		ResultInfo ( void ) :
			result(nullptr, &PQclear),
			column_mappings(nullptr)
		{
		}
		ResultInfo ( const ResultInfo& ) = delete;
		ResultInfo ( ResultInfo&& ) = default;
		explicit ResultInfo ( PGresult* parRes ) :
			result(parRes, &PQclear),
			column_mappings(nullptr)
		{
		}
		ResultInfo ( PGResultPtr&& parRes, const std::map<std::string, int>* parColMappings ) :
			result(std::move(parRes)),
			column_mappings(parColMappings)
		{
		}
		~ResultInfo ( void ) noexcept = default;
		ResultInfo& operator= ( const ResultInfo& ) = delete;
		ResultInfo& operator= ( ResultInfo&& ) = default;

		PGResultPtr result;
		const std::map<std::string, int>* column_mappings;
	};
} //namespace pq

#endif