Driver<B extends Backend> class abstract interface Independent SQL drivers

Owns or borrows connection resources for a specific engine B.

Implementations lease one connection for each run callback and return it after the callback settles. The driver contract does not imply that a callback is a transaction: use a SQL runtime or explicitly issue transaction commands.

Future<int> countUsers(Driver<Sqlite> driver) => driver.run((connection) async {
  final result = await connection.execute(SqlCommand('SELECT COUNT(*) FROM users'));
  return result.rows.single.single as int;
});

Implementers

• MariadbDriver
• MysqlDriver
• PostgresDriver
• SqliteDriver

Properties

capabilities → Capabilities

Features and limits exposed by this adapter and its actual backend.

no setter

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

close() → Future<void>

Rejects new work and releases resources owned by this driver.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

run<R>(Future<R> action(SqlConnection)) → Future<R>

Leases one connection until action completes or throws.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited