Utilities

Additional nanodbc utility classes and functions. More...

Collaboration diagram for Utilities:

Namespaces
namespace	nanodbc::detail
	Implementation details, not part of the interface.

Classes
struct	nanodbc::batch_ops
	A type capturing parameter array length as well as number of rows in a rowset of a result. More...
struct	nanodbc::date
	A type for representing date data. More...
struct	nanodbc::time
	A type for representing time data. More...
struct	nanodbc::timestamp
	A type for representing timestamp data. More...
struct	nanodbc::timestampoffset
	A type for representing timestamp+offset data. More...
class	nanodbc::attribute
	A class representing a connection or a statement attribute. More...

Typedefs
template<typename T >
using	nanodbc::is_string = std::bool_constant< std::is_same_v< std::decay_t< T >, std::string >||std::is_same_v< std::decay_t< T >, wide_string >||std::is_same_v< std::decay_t< T >, std::string_view >||std::is_same_v< std::decay_t< T >, wide_string_view > >
	A type trait for testing if a type is a std::basic_string compatible with the current nanodbc configuration.
template<typename T >
using	nanodbc::is_owning_string = std::bool_constant< std::is_same_v< std::decay_t< T >, std::string >||std::is_same_v< std::decay_t< T >, wide_string > >
	A type trait for testing if a type is a string owning the characters it holds.
template<typename T >
using	nanodbc::is_character = std::bool_constant< std::is_same_v< std::decay_t< T >, std::string::value_type >||std::is_same_v< std::decay_t< T >, wide_char_t > >
	A type trait for testing if a type is a character compatible with the current nanodbc configuration.
template<typename T >
using	nanodbc::enable_if_string = std::enable_if_t< is_string_v< T > >
	Enables an overload only for the string types nanodbc binds as strings.
template<typename T >
using	nanodbc::enable_if_character = std::enable_if_t< is_character_v< T > >
	Enables an overload only for the character types nanodbc binds as strings.

Variables
template<typename T >
constexpr bool	nanodbc::is_string_v = is_string<T>::value
	Whether a type is a string compatible with the current nanodbc configuration.
template<typename T >
constexpr bool	nanodbc::is_owning_string_v = is_owning_string<T>::value
	Whether a type is a string owning the characters it holds.
template<typename T >
constexpr bool	nanodbc::is_character_v = is_character<T>::value
	Whether a type is a character compatible with the current nanodbc configuration.

Detailed Description

Additional nanodbc utility classes and functions.

Typedef Documentation

is_owning_string

template<typename T >

using nanodbc::is_owning_string = typedef std::bool_constant< std::is_same_v<std::decay_t<T>, std::string> || std::is_same_v<std::decay_t<T>, wide_string> >

A type trait for testing if a type is a string owning the characters it holds.

Unlike is_string, the view types are excluded: they neither own their characters nor promise a terminating NUL, which is what binding a single value hands to the driver.