Inheritance diagram for pqxx::string_traits< pqxx::internal::encoding_group >:

Static Public Member Functions
static zview	to_buf (char begin, char end, pqxx::internal::encoding_group const &value)
	Return a `string_view` representing value, plus terminating zero.
static char *	into_buf (char begin, char end, pqxx::internal::encoding_group const &value)
	Write value's string representation into buffer at `begin`.
static pqxx::internal::encoding_group	from_string (std::string_view text)
	Parse a string representation of a `TYPE` value.
static std::size_t	size_buffer (pqxx::internal::encoding_group const &value) noexcept
	Estimate how much buffer space is needed to represent value.
Static Public Member Functions inherited from pqxx::internal::enum_traits< pqxx::internal::encoding_group >
static constexpr zview	to_buf (char begin, char end, pqxx::internal::encoding_group const &value)
static constexpr char *	into_buf (char begin, char end, pqxx::internal::encoding_group const &value)
static pqxx::internal::encoding_group	from_string (std::string_view text)
static std::size_t	size_buffer (pqxx::internal::encoding_group const &value) noexcept

Static Public Attributes
static constexpr bool	converts_to_string
	Is conversion from TYPE to strings supported?
static constexpr bool	converts_from_string
	Is conversion from string_view to TYPE supported?
Static Public Attributes inherited from pqxx::internal::enum_traits< pqxx::internal::encoding_group >
static constexpr bool	converts_to_string
static constexpr bool	converts_from_string

Additional Inherited Members
Public Types inherited from pqxx::internal::enum_traits< pqxx::internal::encoding_group >
using	impl_type
using	impl_traits

Member Function Documentation

◆ from_string()

pqxx::internal::encoding_group pqxx::string_traits< pqxx::internal::encoding_group >::from_string ( std::string_view text )

inlinestaticnodiscard

Parse a string representation of a TYPE value.

Throws conversion_error if value does not meet the expected format for a value of this type.

Warning: A null value has no string representation. Do not parse a null.

◆ into_buf()

char * pqxx::string_traits< pqxx::internal::encoding_group >::into_buf	(	char *	begin,
		char *	end,
		pqxx::internal::encoding_group const &	value )

inlinestatic

Write value's string representation into buffer at begin.

◆ size_buffer()

std::size_t pqxx::string_traits< pqxx::internal::encoding_group >::size_buffer ( pqxx::internal::encoding_group const & value )

inlinestaticnodiscardnoexcept

Estimate how much buffer space is needed to represent value.

The estimate may be a little pessimistic, if it saves time.

The estimate includes the terminating zero.

◆ to_buf()

zview pqxx::string_traits< pqxx::internal::encoding_group >::to_buf	(	char *	begin,
		char *	end,
		pqxx::internal::encoding_group const &	value )

inlinestaticnodiscard

Return a string_view representing value, plus terminating zero.

Produces a string_view containing the PostgreSQL string representation for value.

Warning: A null value has no string representation. Do not pass a null.

Uses the space from begin to end as a buffer, if needed. The returned string may lie somewhere in that buffer, or it may be a compile-time constant, or it may be null if value was a null value. Even if the string is stored in the buffer, its begin() may or may not be the same as begin.

The string_view is guaranteed to be valid as long as the buffer from begin to end remains accessible and unmodified.

Exceptions

pqxx::conversion_overrun if the provided buffer space may not be enough. For maximum performance, this is a conservative estimate. It may complain about a buffer which is actually large enough for your value, if an exact check gets too expensive.

Member Data Documentation

◆ converts_from_string

bool pqxx::string_traits< pqxx::internal::encoding_group >::converts_from_string

staticconstexpr

Is conversion from string_view to TYPE supported?

When defining your own conversions, specialise this as true to indicate that your string traits support from_string.

◆ converts_to_string

bool pqxx::string_traits< pqxx::internal::encoding_group >::converts_to_string

staticconstexpr

Is conversion from TYPE to strings supported?

When defining your own conversions, specialise this as true to indicate that your string traits support the conversions to strings.

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

/builddir/build/BUILD/libpqxx-7.10.5-build/libpqxx-7.10.5/redhat-linux-build/include/pqxx/internal/encodings.hxx

Static Public Member Functions

Static Public Attributes

Additional Inherited Members