#include </data/code/userver/mysql/include/userver/storages/mysql/statement_result_set.hpp>
An interface for on-the-flight mapping statement result set from DbType into whatever type you provide without additional allocations.
DbType
is expected to be either an aggregate of supported types or a supported type itself for methods taking FieldTag
; DbType is expected to match DB representation - same amount of columns (1 for FieldTag
overload) and matching types.
You are expected to provide a converter function T Convert(DbType&&, storages::mysql::convert:To<T>)
in either T's namespace or storages::mysql::convert
namespace
Definition at line 206 of file statement_result_set.hpp.
Public Member Functions | |
MappedStatementResultSet (StatementResultSet &&result_set) | |
template<typename T > | |
std::vector< T > | AsVector () && |
Parse statement result set as std::vector<T> using provided converter function. See MySQL supported types for better understanding of T requirements. | |
template<typename T > | |
std::vector< T > | AsVector (FieldTag) && |
Parse statement result set as std::vector<T> using provided converter function. See MySQL supported types for supported types. | |
template<typename Container > | |
Container | AsContainer () && |
Parse statement result set as Container<T> using provided converter function. See MySQL supported types for better understanding of Container::value_type requirements. | |
template<typename Container > | |
Container | AsContainer (FieldTag) && |
Parse statement result set as Container<T> using provided converter function. See MySQL supported types for supported types. | |
template<typename T > | |
T | AsSingleRow () && |
template<typename T > | |
std::optional< T > | AsOptionalSingleRow () && |
|
explicit |
Definition at line 363 of file statement_result_set.hpp.
Container storages::mysql::MappedStatementResultSet< DbType >::AsContainer | ( | ) | && |
Parse statement result set as Container<T> using provided converter function. See MySQL supported types for better understanding of Container::value_type
requirements.
UINVARIANTs on columns count mismatch or types mismatch for DbType
.
Definition at line 384 of file statement_result_set.hpp.
Container storages::mysql::MappedStatementResultSet< DbType >::AsContainer | ( | FieldTag | ) | && |
Parse statement result set as Container<T> using provided converter function. See MySQL supported types for supported types.
UINVARIANTs on columns count not being 1 or types mismatch for DbType.
Definition at line 391 of file statement_result_set.hpp.
|
inline |
Definition at line 255 of file statement_result_set.hpp.
|
inline |
Definition at line 248 of file statement_result_set.hpp.
std::vector< T > storages::mysql::MappedStatementResultSet< DbType >::AsVector | ( | ) | && |
Parse statement result set as std::vector<T> using provided converter function. See MySQL supported types for better understanding of T
requirements.
UINVARIANTs on columns count mismatch or types mismatch for DbType
.
Definition at line 372 of file statement_result_set.hpp.
std::vector< T > storages::mysql::MappedStatementResultSet< DbType >::AsVector | ( | FieldTag | ) | && |
Parse statement result set as std::vector<T> using provided converter function. See MySQL supported types for supported types.
UINVARIANTs on columns count not being 1 or types mismatch for DbType.
Definition at line 378 of file statement_result_set.hpp.