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dindexer/include/pq/resultset.hpp

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/* Copyright 2015, 2016, Michele Santullo
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* 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 idA54B379097864A0BA1B7F9C42B74EAAD
#define idA54B379097864A0BA1B7F9C42B74EAAD
#include <cstddef>
#include <string>
#include <memory>
#include <boost/iterator/counting_iterator.hpp>
#include <boost/iterator/transform_iterator.hpp>
#include <boost/function.hpp>
namespace pq {
class Connection;
struct ResultInfo;
class Row {
public:
typedef boost::transform_iterator<boost::function<std::string(std::size_t)>, boost::counting_iterator<std::size_t>> const_iterator;
Row ( const ResultInfo* parResult, std::size_t parRow );
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Row ( const Row& ) = delete;
Row ( Row&& parOther );
~Row ( void ) noexcept;
bool empty ( void ) const;
std::size_t size ( void ) const;
std::string operator[] ( const std::string& parIndex ) const;
std::string operator[] ( std::size_t parIndex ) const;
Row& operator= ( const Row& ) = delete;
Row& operator= ( Row&& ) = delete;
bool is_null ( std::size_t parIndex ) const;
bool is_null ( const std::string& parIndex ) const;
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const_iterator begin ( void ) const;
const_iterator end ( void ) const;
const_iterator cbegin ( void ) const { return begin(); }
const_iterator cend ( void ) const { return end(); }
private:
struct LocalData;
std::string get_as_str_assume_valid ( int parIndex ) const;
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std::unique_ptr<LocalData> m_localData;
};
class ResultSet {
public:
typedef boost::transform_iterator<boost::function<Row(std::size_t)>, boost::counting_iterator<std::size_t>> const_iterator;
explicit ResultSet ( ResultInfo&& parResult );
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ResultSet ( const ResultSet& ) = delete;
ResultSet ( ResultSet&& parOther );
~ResultSet ( void ) noexcept;
bool empty ( void ) const;
std::size_t size ( void ) const;
Row operator[] ( const std::size_t parIndex ) const;
const_iterator begin ( void ) const;
const_iterator end ( void ) const;
const_iterator cbegin ( void ) const { return begin(); }
const_iterator cend ( void ) const { return end(); }
private:
struct LocalData;
std::unique_ptr<LocalData> m_localData;
};
} //namespace pq
#endif