storages::postgres::io Namespace Reference

Detailed Description

uPg input-output.

Namespace containing classes and functions for defining datatype input-output and specifying mapping between C++ and PostgreSQL types.

Namespaces
namespace	traits
	uPg input-output traits.

Classes
struct	ArrayType
struct	ArrayType< PredefinedOids::kBit >
struct	ArrayType< PredefinedOids::kBoolean >
struct	ArrayType< PredefinedOids::kBox >
struct	ArrayType< PredefinedOids::kBpchar >
struct	ArrayType< PredefinedOids::kBytea >
struct	ArrayType< PredefinedOids::kChar >
struct	ArrayType< PredefinedOids::kCid >
struct	ArrayType< PredefinedOids::kCidr >
struct	ArrayType< PredefinedOids::kCircle >
struct	ArrayType< PredefinedOids::kDate >
struct	ArrayType< PredefinedOids::kDateRange >
struct	ArrayType< PredefinedOids::kFloat4 >
struct	ArrayType< PredefinedOids::kFloat8 >
struct	ArrayType< PredefinedOids::kInet >
struct	ArrayType< PredefinedOids::kInt2 >
struct	ArrayType< PredefinedOids::kInt4 >
struct	ArrayType< PredefinedOids::kInt4Range >
struct	ArrayType< PredefinedOids::kInt8 >
struct	ArrayType< PredefinedOids::kInt8Range >
struct	ArrayType< PredefinedOids::kInterval >
struct	ArrayType< PredefinedOids::kJson >
struct	ArrayType< PredefinedOids::kJsonb >
struct	ArrayType< PredefinedOids::kLine >
struct	ArrayType< PredefinedOids::kLseg >
struct	ArrayType< PredefinedOids::kLsn >
struct	ArrayType< PredefinedOids::kMacaddr >
struct	ArrayType< PredefinedOids::kMacaddr8 >
struct	ArrayType< PredefinedOids::kName >
struct	ArrayType< PredefinedOids::kNumeric >
struct	ArrayType< PredefinedOids::kNumRange >
struct	ArrayType< PredefinedOids::kOid >
struct	ArrayType< PredefinedOids::kPath >
struct	ArrayType< PredefinedOids::kPoint >
struct	ArrayType< PredefinedOids::kPolygon >
struct	ArrayType< PredefinedOids::kRecord >
struct	ArrayType< PredefinedOids::kText >
struct	ArrayType< PredefinedOids::kTid >
struct	ArrayType< PredefinedOids::kTime >
struct	ArrayType< PredefinedOids::kTimestamp >
struct	ArrayType< PredefinedOids::kTimestampRange >
struct	ArrayType< PredefinedOids::kTimestamptz >
struct	ArrayType< PredefinedOids::kTimestamptzRange >
struct	ArrayType< PredefinedOids::kUuid >
struct	ArrayType< PredefinedOids::kVarbit >
struct	ArrayType< PredefinedOids::kVarchar >
struct	ArrayType< PredefinedOids::kXid >
struct	BufferCategoryHash
struct	BufferFormatter
	Primary template for Postgre buffer formatter Specialisations should provide call operators that write to a buffer. More...
struct	BufferFormatter< ::utils::StrongTypedef< Tag, T, Ops, Enable > >
struct	BufferFormatter< AddressV4 >
	Binary formatter for utils::ip::AddressV4. More...
struct	BufferFormatter< AddressV6 >
	Binary formatter for utils::ip::AddressV6. More...
struct	BufferFormatter< Bigint >
struct	BufferFormatter< bool >
struct	BufferFormatter< boost::optional< T >, std::enable_if_t< traits::kHasFormatter< T > > >
	Formatter specialization for boost::optional. More...
struct	BufferFormatter< boost::uuids::uuid >
struct	BufferFormatter< char >
struct	BufferFormatter< char[N]>
struct	BufferFormatter< const char * >
struct	BufferFormatter< Date >
	Binary formatter for utils::datetime::Date. More...
struct	BufferFormatter< decimal64::Decimal< Prec, RoundPolicy > >
struct	BufferFormatter< detail::Interval >
struct	BufferFormatter< double >
struct	BufferFormatter< float >
struct	BufferFormatter< InetNetwork >
	Binary formatter for utils::ip::InetNetwork. More...
struct	BufferFormatter< Integer >
struct	BufferFormatter< Macaddr >
	Binary formatter for utils::macaddr:Macaddr. More...
struct	BufferFormatter< Macaddr8 >
	Binary formatter for utils::macaddr:Macaddr8. More...
struct	BufferFormatter< MultiPrecision< Precision > >
struct	BufferFormatter< NetworkV4 >
	Binary formatter for utils::ip::NetworkV4. More...
struct	BufferFormatter< NetworkV6 >
	Binary formatter for utils::ip::NetworkV6. More...
struct	BufferFormatter< Null< T > >
struct	BufferFormatter< postgres::BitStringWrapper< BitContainer, kBitStringType > >
struct	BufferFormatter< postgres::ByteaWrapper< ByteContainer >, traits::EnableIfByteaCompatible< std::decay_t< ByteContainer > > >
struct	BufferFormatter< postgres::detail::BitStringRefWrapper< BitContainerRef, postgres::detail::BitContainerInterface::kCommon, kBitStringType > >
struct	BufferFormatter< postgres::detail::BitStringRefWrapper< BitContainerRef, postgres::detail::BitContainerInterface::kFlags, kBitStringType > >
struct	BufferFormatter< postgres::detail::ByteaRefWrapper< ByteContainer >, traits::EnableIfByteaCompatible< std::decay_t< ByteContainer > > >
struct	BufferFormatter< Smallint >
struct	BufferFormatter< std::bitset< N > >
struct	BufferFormatter< std::chrono::time_point< ClockType, Duration > >
	Binary formatter for std::chrono::time_point. More...
struct	BufferFormatter< std::optional< T >, std::enable_if_t< traits::kHasFormatter< T > > >
	Formatter specialization for std::optional. More...
struct	BufferFormatter< std::string >
struct	BufferFormatter< std::string_view >
struct	BufferFormatter<::utils::datetime::TimeOfDay< Duration > >
	Binary formatter for utils::datetime::TimeOfDay mapped to postgres time This datatype is time-zone agnostic, it should't be mixed with timetz type or sudden TZ adjustments will be applied. More...
struct	BufferFormatter<::utils::OptionalRef< T >, std::enable_if_t< traits::kHasFormatter< T > > >
	Formatter specialization for utils::OptionalRef. More...
struct	BufferParser
	Primary template for Postgre buffer parser. Specialisations should provide call operators that parse FieldBuffer. More...
struct	BufferParser< ::utils::StrongTypedef< Tag, T, Ops, Enable > >
struct	BufferParser< AddressV4 >
	Binary parser for utils::ip::AddressV4. More...
struct	BufferParser< AddressV6 >
	Binary parser for utils::ip::AddressV6. More...
struct	BufferParser< Bigint >
struct	BufferParser< bool >
struct	BufferParser< boost::optional< T >, std::enable_if_t< traits::kHasParser< T > > >
	Parser specialization for boost::optional. More...
struct	BufferParser< boost::uuids::uuid >
struct	BufferParser< char >
struct	BufferParser< Date >
	Binary parser for utils::datetime::Date. More...
struct	BufferParser< decimal64::Decimal< Prec, RoundPolicy > >
struct	BufferParser< detail::Interval >
struct	BufferParser< double >
struct	BufferParser< float >
struct	BufferParser< InetNetwork >
	Binary parser for utils::ip::InetNetwork. More...
struct	BufferParser< Integer >
struct	BufferParser< Macaddr >
	Binary parser for utils::macaddr::Macaddr. More...
struct	BufferParser< Macaddr8 >
	Binary parser for utils::macaddr::Macaddr8. More...
struct	BufferParser< MultiPrecision< Precision > >
struct	BufferParser< NetworkV4 >
	Binary parser for utils::ip::NetworkV4. More...
struct	BufferParser< NetworkV6 >
	Binary parser for utils::ip::NetworkV6. More...
struct	BufferParser< postgres::BitStringWrapper< BitContainer, kBitStringType > >
struct	BufferParser< postgres::ByteaWrapper< ByteContainer >, traits::EnableIfByteaCompatible< std::decay_t< ByteContainer > > >
struct	BufferParser< postgres::detail::BitStringRefWrapper< BitContainerRef, postgres::detail::BitContainerInterface::kCommon, kBitStringType > >
struct	BufferParser< postgres::detail::BitStringRefWrapper< BitContainerRef, postgres::detail::BitContainerInterface::kFlags, kBitStringType > >
struct	BufferParser< postgres::detail::ByteaRefWrapper< ByteContainer >, traits::EnableIfByteaCompatible< std::decay_t< ByteContainer > > >
struct	BufferParser< Smallint >
struct	BufferParser< std::bitset< N > >
struct	BufferParser< std::chrono::time_point< ClockType, Duration > >
	Binary parser for std::chrono::time_point. More...
struct	BufferParser< std::optional< T >, std::enable_if_t< traits::kHasParser< T > > >
	Parser specialization for std::optional. More...
struct	BufferParser< std::string >
struct	BufferParser< std::string_view >
struct	BufferParser<::utils::datetime::TimeOfDay< Duration > >
	Binary parser for utils::datetime::TimeOfDay mapped to postgres time. More...
struct	CppToPg
	Detect mapping of a C++ type to Postgres type. More...
struct	CppToPg< boost::optional< T >, std::enable_if_t< traits::kIsMappedToPg< T > > >
	Pg mapping specialization for boost::optional. More...
struct	CppToPg< Null< T > >
struct	CppToPg< std::optional< T >, std::enable_if_t< traits::kIsMappedToPg< T > > >
	Pg mapping specialization for std::optional. More...
struct	CppToPg< T, std::enable_if_t<!traits::kIsSpecialMapping< T > &&traits::kIsMappedToPg< T > &&!traits::kIsMappedToArray< T > > >
struct	CppToPg< T, traits::EnableIfCanUseEnumAsStrongTypedef< T > >
struct	CppToPg<::utils::OptionalRef< T >, std::enable_if_t< traits::kIsMappedToPg< T > > >
	Pg mapping specialization for USERVER_NAMESPACE::utils::OptionalRef. More...
struct	CppToPg<::utils::StrongTypedef< Tag, T, Ops, Enable >, std::enable_if_t<!traits::kIsStrongTypedefDirectlyMapped< Tag, T, Ops, Enable > &&traits::kIsMappedToPg< T > > >
struct	CppToSystemPg
	Primary template for declaring mapping to a PostgreSQL system type. More...
struct	CppToSystemPg< AddressV4 >
struct	CppToSystemPg< AddressV6 >
struct	CppToSystemPg< Bigint >
struct	CppToSystemPg< BigintRange >
struct	CppToSystemPg< bool >
struct	CppToSystemPg< boost::uuids::uuid >
struct	CppToSystemPg< BoundedBigintRange >
struct	CppToSystemPg< BoundedIntegerRange >
struct	CppToSystemPg< char >
struct	CppToSystemPg< char[N]>
struct	CppToSystemPg< const char * >
struct	CppToSystemPg< Date >
struct	CppToSystemPg< decimal64::Decimal< Prec, RoundPolicy > >
struct	CppToSystemPg< detail::Box >
struct	CppToSystemPg< detail::Circle >
struct	CppToSystemPg< detail::Interval >
struct	CppToSystemPg< detail::Line >
struct	CppToSystemPg< detail::LineSegment >
struct	CppToSystemPg< detail::Path >
struct	CppToSystemPg< detail::Point >
struct	CppToSystemPg< detail::Polygon >
struct	CppToSystemPg< double >
struct	CppToSystemPg< float >
struct	CppToSystemPg< formats::json::Value >
struct	CppToSystemPg< InetNetwork >
struct	CppToSystemPg< Integer >
struct	CppToSystemPg< IntegerRange >
struct	CppToSystemPg< Macaddr >
struct	CppToSystemPg< Macaddr8 >
struct	CppToSystemPg< MultiPrecision< Precision > >
struct	CppToSystemPg< NetworkV4 >
struct	CppToSystemPg< NetworkV6 >
struct	CppToSystemPg< PlainJson >
struct	CppToSystemPg< postgres::BitStringWrapper< BitContainer, postgres::BitStringType::kBit > >
struct	CppToSystemPg< postgres::BitStringWrapper< BitContainer, postgres::BitStringType::kBitVarying > >
struct	CppToSystemPg< postgres::ByteaWrapper< ByteContainer > >
struct	CppToSystemPg< postgres::detail::BitStringRefWrapper< BitContainer, kContainerInterface, postgres::BitStringType::kBit > >
struct	CppToSystemPg< postgres::detail::BitStringRefWrapper< BitContainer, kContainerInterface, postgres::BitStringType::kBitVarying > >
struct	CppToSystemPg< postgres::detail::ByteaRefWrapper< ByteContainer > >
struct	CppToSystemPg< Smallint >
struct	CppToSystemPg< std::bitset< N > >
struct	CppToSystemPg< std::chrono::duration< Rep, Period > >
struct	CppToSystemPg< std::chrono::time_point< ClockType, Duration > >
struct	CppToSystemPg< std::string >
struct	CppToSystemPg< std::string_view >
struct	CppToSystemPg< TimePointTz >
struct	CppToSystemPg<::utils::datetime::TimeOfDay< Duration > >
struct	CppToUserPg
	Primary template for declaring mapping to a PostgreSQL user type. More...
struct	EnumMappingBase
struct	FieldBuffer
struct	PgToCpp
struct	RowType
struct	TransformFormatter
struct	TransformParser

Typedefs
template<PredefinedOids TypeOid>
using	PredefinedOid = std::integral_constant<PredefinedOids, TypeOid>
template<BufferCategory Category>
using	BufferCategoryConstant = std::integral_constant<BufferCategory, Category>
using	TypeBufferCategory = std::unordered_map<Oid, BufferCategory>

Enumerations
enum class	PredefinedOids {   kInvalid = kInvalidOid ,   kBoolean = 16 ,   kBytea = 17 ,   kChar = 18 ,   kName = 19 ,   kInt8 = 20 ,   kInt2 = 21 ,   kInt2Vector = 22 ,   kInt4 = 23 ,   kRegproc = 24 ,   kText = 25 ,   kOid = 26 ,   kTid = 27 ,   kXid = 28 ,   kCid = 29 ,   kOidVector = 30 ,   kJson = 114 ,   kJsonArray = 199 ,   kXml = 142 ,   kPgNodeTree = 194 ,   kPgDdlCommand = 32 ,   kPoint = 600 ,   kLseg = 601 ,   kPath = 602 ,   kBox = 603 ,   kPolygon = 604 ,   kLine = 628 ,   kLineArray = 629 ,   kFloat4 = 700 ,   kFloat8 = 701 ,   kAbstime = 702 ,   kReltime = 703 ,   kTinterval = 704 ,   kUnknown = 705 ,   kCircle = 718 ,   kCircleArray = 719 ,   kCash = 790 ,   kMacaddr = 829 ,   kMacaddrArray = 1040 ,   kMacaddr8 = 774 ,   kMacaddr8Array = 775 ,   kInet = 869 ,   kInetArray = 1041 ,   kCidr = 650 ,   kCidrArray = 651 ,   kBooleanArray = 1000 ,   kByteaArray = 1001 ,   kCharArray = 1002 ,   kNameArray = 1003 ,   kInt2Array = 1005 ,   kInt4Array = 1007 ,   kTextArray = 1009 ,   kTidArray = 1010 ,   kXidArray = 1011 ,   kCidArray = 1012 ,   kBphcarArray = 1014 ,   kVarcharArray = 1015 ,   kInt8Array = 1016 ,   kPointArray = 1017 ,   kLsegArray = 1018 ,   kPathArray = 1019 ,   kBoxArray = 1020 ,   kFloat4Array = 1021 ,   kFloat8Array = 1022 ,   kPolygonArray = 1027 ,   kOidArray = 1028 ,   kAclItem = 1033 ,   kCstringArray = 1263 ,   kBpchar = 1042 ,   kVarchar = 1043 ,   kDate = 1082 ,   kTime = 1083 ,   kDateArray = 1182 ,   kTimeArray = 1183 ,   kTimestamp = 1114 ,   kTimestampArray = 1115 ,   kTimestamptz = 1184 ,   kTimestamptzArray = 1185 ,   kInterval = 1186 ,   kIntervalArray = 1187 ,   kNumericArray = 1231 ,   kTimetz = 1266 ,   kBit = 1560 ,   kBitArray = 1561 ,   kVarbit = 1562 ,   kVarbitArray = 1563 ,   kNumeric = 1700 ,   kRefcursor = 1790 ,   kRegprocedure = 2202 ,   kRegoper = 2203 ,   kRegoperator = 2204 ,   kRegclass = 2205 ,   kRegtype = 2206 ,   kRegrole = 4096 ,   kRegtypearray = 2211 ,   kUuid = 2950 ,   kUuidArray = 2951 ,   kLsn = 3220 ,   kLsnArray = 3221 ,   kTsvector = 3614 ,   kGtsvector = 3642 ,   kTsquery = 3615 ,   kRegconfig = 3734 ,   kRegdictionary = 3769 ,   kJsonb = 3802 ,   kJsonbArray = 3807 ,   kRecord = 2249 ,   kRecordArray = 2287 ,   kCstring = 2275 ,   kAny = 2276 ,   kAnyArray = 2277 ,   kVoid = 2278 ,   kTrigger = 2279 ,   kEvttrigger = 3838 ,   kLanguageHandler = 2280 ,   kInternal = 2281 ,   kOpaque = 2282 ,   kAnyElement = 2283 ,   kAnyNonArray = 2776 ,   kAnyEnum = 3500 ,   kFdwHandler = 3115 ,   kAnyRange = 3831 ,   kInt4Range = 3904 ,   kInt4RangeArray = 3905 ,   kNumRange = 3906 ,   kNumRangeArray = 3907 ,   kTimestampRange = 3908 ,   kTimestampRangeArray = 3909 ,   kTimestamptzRange = 3910 ,   kTimestamptzRangeArray = 3911 ,   kDateRange = 3912 ,   kDateRangeArray = 3913 ,   kInt8Range = 3926 ,   kInt8RangeArray = 3927 }
enum class	BufferCategory {   kKeepCategory = -1 ,   kNoParser = 0 ,   kVoid ,   kPlainBuffer ,   kArrayBuffer ,   kCompositeBuffer ,   kRangeBuffer }

Functions
template<typename T >
constexpr bool	IsTypeMappedToSystemArray ()
template<typename Container >
detail::ContainerSplitter< Container >	SplitContainer (const Container &container, std::size_t chunk_elements)
template<typename Container >
detail::ContainerByColumnsSplitter< Container >	SplitContainerByColumns (const Container &container, std::size_t chunk_elements)
template<typename T >
void	ReadBuffer (const FieldBuffer &buffer, T &&value)
	Read a value from input buffer.
template<typename T >
void	ReadBuffer (const FieldBuffer &buffer, T &&value, const TypeBufferCategory &categories)
template<typename T >
traits::IO< T >::FormatterType	BufferWriter (const T &value)
template<typename T , typename Buffer >
void	WriteBuffer (const UserTypes &types, Buffer &buffer, const T &value)
template<typename T >
std::size_t	ReadRawBinary (FieldBuffer buffer, T &value, const TypeBufferCategory &categories)
template<typename T , typename Buffer >
void	WriteRawBinary (const UserTypes &types, Buffer &buffer, const T &value, Oid replace_oid=kInvalidOid)
const std::string &	ToString (BufferCategory)
BufferCategory	GetTypeBufferCategory (const TypeBufferCategory &, Oid)
bool	HasParser (PredefinedOids)
	Find out if a parser for a predefined Postgres type was registered.
bool	MappedToSameType (PredefinedOids, PredefinedOids)
	Find out if predefined Postgres types are mapped to the same cpp type.
PredefinedOids	GetArrayElementOid (PredefinedOids)
	Get array element oid for a predefined type.
BufferCategory	GetBufferCategory (PredefinedOids)
	Get the buffer category for a predefined type.
bool	HasParser (DBTypeName)
template<typename T >
constexpr bool	IsTypeMappedToSystem ()
void	LogRegisteredTypes ()

Variables
constexpr int	kPgBinaryDataFormat = 1
constexpr Integer	kPgNullBufferSize = -1
	Fields that are null are denoted by specifying their length == -1.

Typedef Documentation

BufferCategoryConstant

template<BufferCategory Category>

using storages::postgres::io::BufferCategoryConstant = std::integral_constant<BufferCategory, Category>

Definition at line 38 of file traits.hpp.

PredefinedOid

template<PredefinedOids TypeOid>

using storages::postgres::io::PredefinedOid = std::integral_constant<PredefinedOids, TypeOid>

Definition at line 328 of file pg_types.hpp.

TypeBufferCategory

using storages::postgres::io::TypeBufferCategory = std::unordered_map<Oid, BufferCategory>

Definition at line 40 of file traits.hpp.

Enumeration Type Documentation

BufferCategory

enum class storages::postgres::io::BufferCategory

strong

Category of buffer contents.

Applied to binary parsers and deduced from field's data type.

Enumerator
kKeepCategory	kKeepCategory keep current buffer category
kNoParser	kNoParser the data type doesn't have a parser defined
kVoid	kVoid there won't be a buffer for this field, but the category is required for correctly handling void results
kPlainBuffer	kPlainBuffer the buffer is a single plain value
kArrayBuffer	kArrayBuffer the buffer contains an array of values
kCompositeBuffer	kCompositeBuffer the buffer contains a user-defined composite type
kRangeBuffer	kRangeBuffer the buffer contains a range type

Definition at line 23 of file traits.hpp.

PredefinedOids

enum class storages::postgres::io::PredefinedOids

strong

Oids are predefined for postgres fundamental types Constants can be found here https://github.com/postgres/postgres/blob/master/src/include/catalog/pg_type.dat Oid values can also be retrieved from PostgreSQL instance by running query

select t.oid as "Oid", pg_catalog.format_type(t.oid, null) as "Name"
from pg_catalog.pg_type t
    left join pg_catalog.pg_namespace n on n.oid = t.typnamespace
where (t.typrelid = 0 or (select c.relkind = 'c' from pg_catalog.pg_class c
where c.oid = t.typrelid))
  and not exists(select 1 from pg_catalog.pg_type el where el.oid =
  t.typelem and el.typarray = t.oid) and n.nspname = 'pg_catalog'
order by 1, 2

Definition at line 190 of file pg_types.hpp.

Function Documentation

BufferWriter()

template<typename T >

traits::IO< T >::FormatterType storages::postgres::io::BufferWriter

(

const T &

value

)

Definition at line 115 of file buffer_io.hpp.

IsTypeMappedToSystem()

template<typename T >

constexpr bool storages::postgres::io::IsTypeMappedToSystem ( )

constexpr

Definition at line 124 of file type_mapping.hpp.

IsTypeMappedToSystemArray()

template<typename T >

constexpr bool storages::postgres::io::IsTypeMappedToSystemArray ( )

constexpr

Definition at line 432 of file array_types.hpp.

ReadBuffer() [1/2]

template<typename T >

void storages::postgres::io::ReadBuffer	(	const FieldBuffer &	buffer,
		T &&	value )

Read a value from input buffer.

Definition at line 73 of file buffer_io.hpp.

ReadBuffer() [2/2]

template<typename T >

void storages::postgres::io::ReadBuffer	(	const FieldBuffer &	buffer,
		T &&	value,
		const TypeBufferCategory &	categories )

Definition at line 92 of file buffer_io.hpp.

ReadRawBinary()

template<typename T >

std::size_t storages::postgres::io::ReadRawBinary	(	FieldBuffer	buffer,
		T &	value,
		const TypeBufferCategory &	categories )

Definition at line 70 of file field_buffer.hpp.

SplitContainer()

template<typename Container >

detail::ContainerSplitter< Container > storages::postgres::io::SplitContainer	(	const Container &	container,
		std::size_t	chunk_elements )

Definition at line 672 of file array_types.hpp.

SplitContainerByColumns()

template<typename Container >

detail::ContainerByColumnsSplitter< Container > storages::postgres::io::SplitContainerByColumns	(	const Container &	container,
		std::size_t	chunk_elements )

Definition at line 678 of file array_types.hpp.

WriteBuffer()

template<typename T , typename Buffer >

void storages::postgres::io::WriteBuffer	(	const UserTypes &	types,
		Buffer &	buffer,
		const T &	value )

Definition at line 124 of file buffer_io.hpp.

WriteRawBinary()

template<typename T , typename Buffer >

void storages::postgres::io::WriteRawBinary	(	const UserTypes &	types,
		Buffer &	buffer,
		const T &	value,
		Oid	replace_oid = kInvalidOid )

Definition at line 91 of file field_buffer.hpp.

Variable Documentation

kPgBinaryDataFormat

constexpr int storages::postgres::io::kPgBinaryDataFormat = 1

inlineconstexpr

Definition at line 51 of file traits.hpp.

kPgNullBufferSize

constexpr Integer storages::postgres::io::kPgNullBufferSize = -1

inlineconstexpr

Fields that are null are denoted by specifying their length == -1.

Definition at line 54 of file traits.hpp.