// Copyright (c) 2023, 2024, Oracle and/or its affiliates. // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License, version 2.0, // as published by the Free Software Foundation. // // This program is designed to work with certain software (including // but not limited to OpenSSL) that is licensed under separate terms, // as designated in a particular file or component or in included license // documentation. The authors of MySQL hereby grant you an additional // permission to link the program and your derivative works with the // separately licensed software that they have either included with // the program or referenced in the documentation. // // This program 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, version 2.0, for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. #ifndef MYSQL_SERIALIZATION_FIELD_WRAPPER_H #define MYSQL_SERIALIZATION_FIELD_WRAPPER_H #include "mysql/serialization/field_definition.h" #include "mysql/serialization/serialization_types.h" /// @file /// Experimental API header /// @addtogroup GroupLibsMysqlSerialization /// @{ namespace mysql::serialization { /// @brief Wrapper for fields to hold field reference and /// user-defined, compile-time field size /// @note This is created in order to pass information about field size /// to the Archive template class Field_wrapper { public: using value_type = Field_type; static constexpr Field_size value_size = defined_field_size; using Field_ref_type = Field_type &; using Field_ref_wrapper_type = std::reference_wrapper; /// @brief Constructor /// @param field_reference Reference to field Field_wrapper(Field_type &field_reference) : m_ref(field_reference) {} /// @brief field bare reference accessor /// @returns Reference to Field_type object Field_ref_type get() { return m_ref.get(); } private: Field_ref_wrapper_type m_ref; ///< Internal reference }; /// @brief Wrapper for fields to hold field reference and defined by the /// user compile time size of the field /// @note This is created in order to pass information about field size /// to the Archive template class Field_wrapper { public: using value_type = Field_type; static constexpr Field_size value_size = defined_field_size; using Field_ref_type = const Field_type &; using Field_ref_wrapper_type = std::reference_wrapper; /// @brief Constructor /// @param field_reference Reference to field Field_wrapper(Field_ref_type field_reference) : m_ref(field_reference) {} /// @brief field bare reference accessor /// @returns Reference to Field_type object Field_ref_type get() const { return m_ref.get(); } private: Field_ref_wrapper_type m_ref; ///< Internal reference }; template auto create_varlen_field_wrapper(Field_type &field_reference) { return Field_wrapper(field_reference); } } // namespace mysql::serialization /// @} #endif // MYSQL_SERIALIZATION_FIELD_WRAPPER_H