mirror of
https://github.com/mod-playerbots/azerothcore-wotlk.git
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de13bf426e
* feat(Core/DBLayer): replace `char const*` to `std::string_view` * CString * 1 * chore(Core/Misc): code cleanup * cl * db fix * fmt style sql * to fmt * py * del old * 1 * 2 * 3 * 1 * 1
125 lines
3.4 KiB
C++
125 lines
3.4 KiB
C++
/*
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* This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Affero General Public License as published by the
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* Free Software Foundation; either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef QUERYRESULT_H
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#define QUERYRESULT_H
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#include "DatabaseEnvFwd.h"
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#include "Define.h"
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#include "Field.h"
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#include <tuple>
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#include <vector>
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class AC_DATABASE_API ResultSet
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{
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public:
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ResultSet(MySQLResult* result, MySQLField* fields, uint64 rowCount, uint32 fieldCount);
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~ResultSet();
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bool NextRow();
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[[nodiscard]] uint64 GetRowCount() const { return _rowCount; }
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[[nodiscard]] uint32 GetFieldCount() const { return _fieldCount; }
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[[nodiscard]] std::string GetFieldName(uint32 index) const;
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[[nodiscard]] Field* Fetch() const { return _currentRow; }
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Field const& operator[](std::size_t index) const;
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template<typename... Ts>
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inline std::tuple<Ts...> FetchTuple()
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{
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AssertRows(sizeof...(Ts));
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std::tuple<Ts...> theTuple = {};
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std::apply([this](Ts&... args)
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{
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uint8 index{ 0 };
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((args = _currentRow[index].Get<Ts>(), index++), ...);
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}, theTuple);
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return theTuple;
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}
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protected:
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std::vector<QueryResultFieldMetadata> _fieldMetadata;
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uint64 _rowCount;
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Field* _currentRow;
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uint32 _fieldCount;
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private:
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void CleanUp();
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void AssertRows(std::size_t sizeRows);
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MySQLResult* _result;
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MySQLField* _fields;
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ResultSet(ResultSet const& right) = delete;
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ResultSet& operator=(ResultSet const& right) = delete;
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};
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class AC_DATABASE_API PreparedResultSet
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{
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public:
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PreparedResultSet(MySQLStmt* stmt, MySQLResult* result, uint64 rowCount, uint32 fieldCount);
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~PreparedResultSet();
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bool NextRow();
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[[nodiscard]] uint64 GetRowCount() const { return m_rowCount; }
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[[nodiscard]] uint32 GetFieldCount() const { return m_fieldCount; }
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[[nodiscard]] Field* Fetch() const;
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Field const& operator[](std::size_t index) const;
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template<typename... Ts>
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inline std::tuple<Ts...> FetchTuple()
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{
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AssertRows(sizeof...(Ts));
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std::tuple<Ts...> theTuple = {};
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std::apply([this](Ts&... args)
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{
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uint8 index{ 0 };
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((args = m_rows[uint32(m_rowPosition) * m_fieldCount + index].Get<Ts>(), index++), ...);
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}, theTuple);
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return theTuple;
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}
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protected:
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std::vector<QueryResultFieldMetadata> m_fieldMetadata;
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std::vector<Field> m_rows;
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uint64 m_rowCount;
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uint64 m_rowPosition;
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uint32 m_fieldCount;
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private:
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MySQLBind* m_rBind;
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MySQLStmt* m_stmt;
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MySQLResult* m_metadataResult; ///< Field metadata, returned by mysql_stmt_result_metadata
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void CleanUp();
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bool _NextRow();
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void AssertRows(std::size_t sizeRows);
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PreparedResultSet(PreparedResultSet const& right) = delete;
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PreparedResultSet& operator=(PreparedResultSet const& right) = delete;
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};
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#endif
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