Opens or creates an SQLite database.
init(path: String, configuration: Configuration = Configuration()) throws s4GRDB13DatabaseQueueC4path13configurationACSS_AA13ConfigurationVtKcfc What are these?2NEBYThe path to the database file.
A configuration.
A DatabaseError whenever an SQLite error occurs.
For example:
let dbQueue = try DatabaseQueue(path: "/path/to/database.sqlite")The SQLite connection is closed when the database queue gets deallocated.
import GRDBA toolkit for SQLite databases, with a focus on application development
final class DatabaseQueueA database connection that serializes accesses to an SQLite database.
@frozen struct StringA Unicode string value that is a collection of characters.
struct ConfigurationThe configuration of a database connection.
struct DatabaseErrorA DatabaseError describes an SQLite error.
init(named name: String? = nil, configuration: Configuration = Configuration()) throws Opens an in-memory SQLite database.
static func inMemoryCopy(fromPath path: String, configuration: Configuration = Configuration()) throws -> DatabaseQueue Returns a connection to an in-memory copy of the database at path.
static func temporaryCopy(fromPath path: String, configuration: Configuration = Configuration()) throws -> DatabaseQueue Returns a connection to a private, temporary, on-disk copy of the database at path.
var configuration: Configuration { get }var path: String { get }func _add<Reducer>(observation: ValueObservation<Reducer>, scheduling scheduler: some ValueObservationScheduler, onChange: @escaping (Reducer.Value) -> Void) -> AnyDatabaseCancellable where Reducer : ValueReducer func asyncBarrierWriteWithoutTransaction(_ updates: @escaping (Result<Database, Error>) -> Void) func asyncRead(_ value: @escaping (Result<Database, Error>) -> Void) func asyncUnsafeRead(_ value: @escaping (Result<Database, Error>) -> Void) func asyncWriteWithoutTransaction(_ updates: @escaping (Database) -> Void) func barrierWriteWithoutTransaction<T>(_ updates: (Database) throws -> T) throws -> T func barrierWriteWithoutTransaction<T>(_ updates: @escaping (Database) throws -> T) async throws -> T where T : Sendable func close() throws func inDatabase<T>(_ updates: (Database) throws -> T) rethrows -> T Executes database operations, and returns their result after they have finished executing.
func inTransaction(_ kind: Database.TransactionKind? = nil, _ updates: (Database) throws -> Database.TransactionCompletion) throws Wraps database operations inside a database transaction.
func interrupt() func read<T>(_ value: (Database) throws -> T) throws -> T func read<T>(_ value: @escaping (Database) throws -> T) async throws -> T where T : Sendable func releaseMemory() Free as much memory as possible.
func spawnConcurrentRead(_ value: @escaping (Result<Database, Error>) -> Void) func unsafeRead<T>(_ value: (Database) throws -> T) rethrows -> T func unsafeRead<T>(_ value: @escaping (Database) throws -> T) async throws -> T where T : Sendable func unsafeReentrantRead<T>(_ value: (Database) throws -> T) rethrows -> T func unsafeReentrantWrite<T>(_ updates: (Database) throws -> T) rethrows -> T func writeWithoutTransaction<T>(_ updates: (Database) throws -> T) rethrows -> T func writeWithoutTransaction<T>(_ updates: @escaping (Database) throws -> T) async throws -> T where T : Sendable