#include </data/code/userver/odbc/include/userver/storages/odbc/result_set.hpp>

Detailed Description

Result set for ODBC query execution.

Definition at line 72 of file result_set.hpp.

Public Types
using	size_type = std::size_t
using	difference_type = std::ptrdiff_t

Static Public Attributes
static constexpr size_type	npos = std::numeric_limits<size_type>::max()

Row container concept
using	value_type = Row
using	reference = value_type
	ResultSet (std::shared_ptr< detail::ResultWrapper > pimpl)
size_type	FieldCount () const
	Get the number of columns in the result set.
size_type	Size () const
size_type	RowsAffected () const
	Number of rows affected by a data-modifying statement. Returns zero when the driver reports an unknown count.
std::string_view	GetFieldName (size_type index) const
	Get a result column name by zero-based index.
bool	IsEmpty () const
	Check if the result set is empty.
reference	operator[] (size_type index) const &
template<typename Container> requires impl::ResultContainer<Container>
Container	AsContainer () const
template<typename T> requires impl::kIsResultValue<T>
T	AsSingleRow () const
	Materializes the only result row, requiring exactly one row.
template<typename T> requires impl::kIsResultValue<T>
std::optional< T >	AsOptionalSingleRow () const

Member Typedef Documentation

◆ difference_type

using storages::odbc::ResultSet::difference_type = std::ptrdiff_t

Definition at line 75 of file result_set.hpp.

◆ reference

using storages::odbc::ResultSet::reference = value_type

Definition at line 82 of file result_set.hpp.

◆ size_type

using storages::odbc::ResultSet::size_type = std::size_t

Definition at line 74 of file result_set.hpp.

◆ value_type

using storages::odbc::ResultSet::value_type = Row

Definition at line 81 of file result_set.hpp.

Constructor & Destructor Documentation

◆ ResultSet()

storages::odbc::ResultSet::ResultSet ( std::shared_ptr< detail::ResultWrapper > pimpl )

inlineexplicit

Definition at line 85 of file result_set.hpp.

Member Function Documentation

◆ AsContainer()

template<typename Container>
requires impl::ResultContainer<Container>

Container storages::odbc::ResultSet::AsContainer ( ) const

Materializes every row into the container's value type. Scalar values require exactly one result column; aggregate values are initialized in declaration order and require an exact column count.

Definition at line 164 of file result_set.hpp.

◆ AsOptionalSingleRow()

template<typename T>
requires impl::kIsResultValue<T>

std::optional< T > storages::odbc::ResultSet::AsOptionalSingleRow ( ) const

Returns no value for zero rows, materializes one row, and rejects more than one row. For optional-valued T the outer optional represents row presence and the inner optional represents SQL NULL.

Definition at line 190 of file result_set.hpp.

◆ AsSingleRow()

template<typename T>
requires impl::kIsResultValue<T>

T storages::odbc::ResultSet::AsSingleRow ( ) const

Materializes the only result row, requiring exactly one row.

Definition at line 181 of file result_set.hpp.

Member Data Documentation

◆ npos

size_type storages::odbc::ResultSet::npos = std::numeric_limits<size_type>::max()

staticconstexpr

Definition at line 76 of file result_set.hpp.

The documentation for this class was generated from the following file:

/data/code/userver/odbc/include/userver/storages/odbc/result_set.hpp