Accessor to a single field in a result set's row.
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#include <userver/storages/postgres/result_set.hpp>
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| class | Row |
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bool | IsNull () const |
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| size_type | To (T &&val) const |
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| template<typename T > |
| void | Coalesce (T &val, const T &default_val) const |
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| template<typename T > |
| std::decay< T >::type | As () const |
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| template<typename T > |
| std::decay< T >::type | Coalesce (const T &default_val) const |
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const io::TypeBufferCategory & | GetTypeBufferCategories () const |
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| | Field (detail::ResultWrapperPtr res, size_type row, size_type col) |
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| size_type | ReadNullable (const io::FieldBuffer &fb, T &&val, std::true_type) const |
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| template<typename T > |
| size_type | ReadNullable (const io::FieldBuffer &buffer, T &&val, std::false_type) const |
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bool | IsValid () const |
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int | Compare (const Field &rhs) const |
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std::ptrdiff_t | Distance (const Field &rhs) const |
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Field & | Advance (std::ptrdiff_t) |
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Accessor to a single field in a result set's row.
Definition at line 228 of file result_set.hpp.
◆ size_type
| using storages::postgres::Field::size_type = std::size_t |
◆ Field()
| storages::postgres::Field::Field |
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detail::ResultWrapperPtr |
res, |
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size_type |
row, |
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size_type |
col |
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) |
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inlineprotected |
◆ As()
template<typename T >
| std::decay< T >::type storages::postgres::Field::As |
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const |
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inline |
Convert the field's buffer into a C++ type.
- Exceptions
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Definition at line 273 of file result_set.hpp.
◆ Coalesce() [1/2]
template<typename T >
| std::decay< T >::type storages::postgres::Field::Coalesce |
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const T & |
default_val | ) |
const |
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inline |
Convert the field's buffer into a C++ type. If the field is null, return default value.
Definition at line 282 of file result_set.hpp.
◆ Coalesce() [2/2]
template<typename T >
| void storages::postgres::Field::Coalesce |
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T & |
val, |
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const T & |
default_val |
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inline |
Read the field's buffer into user-provided variable. If the field is null, set the variable to the default value.
Definition at line 262 of file result_set.hpp.
◆ FieldIndex()
| size_type storages::postgres::Field::FieldIndex |
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const |
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inline |
◆ ReadNullable() [1/2]
template<typename T >
| size_type storages::postgres::Field::ReadNullable |
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const io::FieldBuffer & |
buffer, |
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T && |
val, |
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std::false_type |
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inlineprotected |
◆ ReadNullable() [2/2]
template<typename T >
| size_type storages::postgres::Field::ReadNullable |
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const io::FieldBuffer & |
fb, |
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T && |
val, |
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std::true_type |
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) |
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inlineprotected |
◆ RowIndex()
| size_type storages::postgres::Field::RowIndex |
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const |
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inline |
◆ To()
template<typename T >
| size_type storages::postgres::Field::To |
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T && |
val | ) |
const |
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inline |
Read the field's buffer into user-provided variable.
- Exceptions
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Definition at line 252 of file result_set.hpp.
◆ Row
The documentation for this class was generated from the following file:
Inheritance diagram for storages::postgres::Field: