adbc::driver::Option Class Reference

A typed option value wrapper. Attempts some conversions between types. More...

#include <base_driver.h>

Classes
struct	Unset
	The option is unset. More...

Public Types
using	Value = std::variant<Unset, std::string, std::vector<uint8_t>, int64_t, double>
	The possible values of an option.

Public Member Functions
	Option (const char *value)
	Construct an option from a C string. NULL strings are treated as unset.
	Option (std::string value)
	Option (std::vector< uint8_t > value)
	Option (double value)
	Option (int64_t value)
const Value &	value () const &
Value &	value () &&
bool	has_value () const
	Check whether this option is set.
Result< bool >	AsBool () const
	Try to parse a string value as a boolean.
Result< int64_t >	AsInt () const
	Try to parse a string or integer value as an integer.
Result< std::string_view >	AsString () const
	Get the value if it is a string.
std::string	Format () const
	Provide a human-readable summary of the value.

Private Member Functions
AdbcStatusCode	CGet (char *out, size_t *length, AdbcError *error) const
AdbcStatusCode	CGet (uint8_t *out, size_t *length, AdbcError *error) const
AdbcStatusCode	CGet (int64_t *out, AdbcError *error) const
AdbcStatusCode	CGet (double *out, AdbcError *error) const

Private Attributes
Value	value_

Friends
class	ObjectBase

Detailed Description

A typed option value wrapper. Attempts some conversions between types.

Member Typedef Documentation

Value

using adbc::driver::Option::Value = std::variant<Unset, std::string, std::vector<uint8_t>, int64_t, double>

The possible values of an option.

Constructor & Destructor Documentation

Option()

adbc::driver::Option::Option ( const char * value )

inlineexplicit

Construct an option from a C string. NULL strings are treated as unset.

Member Function Documentation

AsBool()

Result< bool > adbc::driver::Option::AsBool ( ) const

inline

Try to parse a string value as a boolean.

AsInt()

Result< int64_t > adbc::driver::Option::AsInt ( ) const

inline

Try to parse a string or integer value as an integer.

AsString()

Result< std::string_view > adbc::driver::Option::AsString ( ) const

inline

Get the value if it is a string.

Format()

std::string adbc::driver::Option::Format ( ) const

inline

Provide a human-readable summary of the value.

has_value()

bool adbc::driver::Option::has_value ( ) const

inline

Check whether this option is set.

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

• /adbc/c/driver/framework/base_driver.h