Removes a transaction observer from the database connection.
func remove(transactionObserver: some TransactionObserver) s4GRDB8DatabaseC6remove19transactionObserveryx_tAA011TransactionE0RzlF What are these?5MBQPFor example:
let myObserver = MyObserver()
try dbQueue.write { db in
db.remove(transactionObserver: myObserver)
}import GRDBA toolkit for SQLite databases, with a focus on application development
final class DatabaseAn SQLite connection.
protocol TransactionObserver : AnyObjectA type that tracks database changes and transactions performed in a database.
func add(transactionObserver: some TransactionObserver, extent: TransactionObservationExtent = .observerLifetime) Adds a transaction observer on the database connection, so that it gets notified of database changes and transactions.
func add(transactionObserver: some TransactionObserver, extent: Database.TransactionObservationExtent = .observerLifetime) Adds a transaction observer to the writer connection, so that it gets notified of database changes and transactions.
func remove(transactionObserver: some TransactionObserver) Removes a transaction observer from the writer connection.
enum TransactionObservationExtentThe extent of the observation performed by a TransactionObserver.
nonisolated(unsafe) static var logError: LogErrorFunction? { get set }The error logging function.
static let resumeNotification: Notification.NameWhen this notification is posted, databases which were opened with the observesSuspensionNotifications configuration flag are resumed.
static var sqliteLibVersionNumber: CInt { get }An integer equal to SQLITE_VERSION_NUMBER.
static let suspendNotification: Notification.NameWhen this notification is posted, databases which were opened with the observesSuspensionNotifications configuration flag are suspended.
static func isGRDBInternalTable(_ tableName: String) -> Bool Returns whether a table is an internal GRDB table.
static func isSQLiteInternalTable(_ tableName: String) -> Bool Returns whether a table is an internal SQLite table.
static func json(_ value: some SQLExpressible) -> SQLExpression Validates and minifies a JSON string, with the JSON SQL function.
static func jsonArray(_ values: some Collection<some SQLExpressible>) -> SQLExpression Creates a JSON array with the JSON_ARRAY SQL function.
static func jsonArray(_ values: some Collection<any SQLExpressible>) -> SQLExpression Creates a JSON array with the JSON_ARRAY SQL function.
static func jsonArrayLength(_ value: some SQLExpressible) -> SQLExpression The number of elements in a JSON array, as returned by the JSON_ARRAY_LENGTH SQL function.
static func jsonArrayLength(_ value: some SQLExpressible, atPath path: some SQLExpressible) -> SQLExpression The number of elements in a JSON array, as returned by the JSON_ARRAY_LENGTH SQL function.
static func jsonExtract(_ value: some SQLExpressible, atPath path: some SQLExpressible) -> SQLExpression The JSON_EXTRACT SQL function.
static func jsonExtract(_ value: some SQLExpressible, atPaths paths: some Collection<some SQLExpressible>) -> SQLExpression The JSON_EXTRACT SQL function.
static func jsonGroupArray(_ value: some SQLExpressible, filter: (any SQLSpecificExpressible)? = nil) -> SQLExpression The JSON_GROUP_ARRAY SQL function.
static func jsonGroupObject(key: some SQLExpressible, value: some SQLExpressible, filter: (any SQLSpecificExpressible)? = nil) -> SQLExpression The JSON_GROUP_OBJECT SQL function.
static func jsonInsert(_ value: some SQLExpressible, _ assignments: some Collection<(key: String, value: any SQLExpressible)>) -> SQLExpression The JSON_INSERT SQL function.
static func jsonIsValid(_ value: some SQLExpressible) -> SQLExpression The JSON_VALID SQL function.
static func jsonObject(_ elements: some Collection<(key: String, value: any SQLExpressible)>) -> SQLExpression Creates a JSON object with the JSON_OBJECT SQL function. Pass key/value pairs with a Swift collection such as a Dictionary.
static func jsonPatch(_ value: some SQLExpressible, with patch: some SQLExpressible) -> SQLExpression The JSON_PATCH SQL function.
static func jsonQuote(_ value: some SQLExpressible) -> SQLExpression Returns a valid JSON string with the JSON_QUOTE SQL function.
static func jsonRemove(_ value: some SQLExpressible, atPath path: some SQLExpressible) -> SQLExpression The JSON_REMOVE SQL function.
static func jsonRemove(_ value: some SQLExpressible, atPaths paths: some Collection<some SQLExpressible>) -> SQLExpression The JSON_REMOVE SQL function.
static func jsonReplace(_ value: some SQLExpressible, _ assignments: some Collection<(key: String, value: any SQLExpressible)>) -> SQLExpression The JSON_REPLACE SQL function.
static func jsonSet(_ value: some SQLExpressible, _ assignments: some Collection<(key: String, value: any SQLExpressible)>) -> SQLExpression The JSON_SET SQL function.
static func jsonType(_ value: some SQLExpressible) -> SQLExpression The JSON_TYPE SQL function.
static func jsonType(_ value: some SQLExpressible, atPath path: some SQLExpressible) -> SQLExpression The JSON_TYPE SQL function.
var changesCount: Int { get }The number of rows modified, inserted or deleted by the most recent successful INSERT, UPDATE or DELETE statement.
let configuration: ConfigurationThe database configuration.
var debugDescription: String { get }let description: StringA description of this database connection.
var isInsideTransaction: Bool { get }A Boolean value indicating whether the database connection is currently inside a transaction.
var lastErrorCode: ResultCode { get }The last error code.
var lastErrorMessage: String? { get }The last error message.
var lastInsertedRowID: Int64 { get }The rowID of the most recently inserted row.
var maximumStatementArgumentCount: Int { get }The maximum number of arguments accepted by an SQLite statement.
var sqliteConnection: SQLiteConnection? { get }The raw SQLite connection, suitable for the SQLite C API.
var totalChangesCount: Int { get }The total number of rows modified, inserted or deleted by all successful INSERT, UPDATE or DELETE statements since the database connection was opened.
var transactionDate: Date { get throws }The date of the current transaction.
func add(collation: DatabaseCollation) Adds or redefines a collation.
func add(function: DatabaseFunction) Adds or redefines a custom SQL function.
func add(tokenizer: (some FTS5CustomTokenizer).Type) Add a custom FTS5 tokenizer.
func afterNextTransaction(onCommit: @escaping (Database) -> Void, onRollback: @escaping (Database) -> Void = { _ in }) Registers closures to be executed after the next or current transaction completes.
func allStatements(literal sqlLiteral: SQL) throws -> SQLStatementCursor Returns a cursor of prepared statements.
func allStatements(sql: String, arguments: StatementArguments? = nil) throws -> SQLStatementCursor Returns a cursor of prepared statements.
func alter(table name: String, body: (TableAlteration) -> Void) throws Modifies a database table.
func backup(to destDb: Database, pagesPerStep: CInt = -1, progress: ((DatabaseBackupProgress) throws -> Void)? = nil) throws Copies the database contents into another database.
func beginTransaction(_ kind: TransactionKind? = nil) throws Begins a database transaction.
func cachedStatement(literal sqlLiteral: SQL) throws -> Statement Returns a prepared statement that can be reused.
func cachedStatement(sql: String) throws -> Statement Returns a prepared statement that can be reused.
func checkForeignKeys() throws Throws an error if there exists a foreign key violation in the database.
func checkForeignKeys(in tableName: String, in schemaName: String? = nil) throws Throws an error if there exists a foreign key violation in the table.
@discardableResult func checkpoint(_ kind: Database.CheckpointMode = .passive, on dbName: String? = "main") throws -> (walFrameCount: Int, checkpointedFrameCount: Int) Runs a WAL checkpoint.
func clearSchemaCache() Clears the database schema cache.
func columns(in tableName: String, in schemaName: String? = nil) throws -> [ColumnInfo] Returns the columns in a table or a view.
func commit() throws Commits a database transaction.
func create(index name: String, on table: String, columns: [String], options: IndexOptions = [], condition: (any SQLExpressible)? = nil) throws Creates an index on the specified table and columns.
func create(index name: String, on table: String, columns: [String], unique: Bool = false, ifNotExists: Bool = false, condition: (any SQLExpressible)? = nil) throws Creates an index on the specified table and columns.
func create(index name: String, on table: String, expressions: [any SQLExpressible], options: IndexOptions = [], condition: (any SQLExpressible)? = nil) throws Creates an index on the specified table and expressions.
func create(indexOn table: String, columns: [String], options: IndexOptions = [], condition: (any SQLExpressible)? = nil) throws Creates an index with a default name on the specified table and columns.
func create(table name: String, options: TableOptions = [], body: (TableDefinition) throws -> Void) throws Creates a database table.
func create(table name: String, temporary: Bool = false, ifNotExists: Bool = false, withoutRowID: Bool = false, body: (TableDefinition) throws -> Void) throws Creates a database table.
func create(view name: String, options: ViewOptions = [], columns: [String]? = nil, as request: SQLSubqueryable) throws Creates a database view.
func create(view name: String, options: ViewOptions = [], columns: [String]? = nil, asLiteral sqlLiteral: SQL) throws Creates a database view.
func create(virtualTable name: String, ifNotExists: Bool = false, using module: String) throws Creates a virtual database table.
func create<Module>(virtualTable tableName: String, ifNotExists: Bool = false, using module: Module, _ body: ((Module.TableDefinition) throws -> Void)? = nil) throws where Module : VirtualTableModule Creates a virtual database table.
func create(virtualTable name: String, options: VirtualTableOptions = [], using module: String) throws Creates a virtual database table.
func create<Module>(virtualTable tableName: String, options: VirtualTableOptions = [], using module: Module, _ body: ((Module.TableDefinition) throws -> Void)? = nil) throws where Module : VirtualTableModule Creates a virtual database table.
func drop(index name: String) throws Deletes a database index.
func drop(indexOn table: String, columns: [String]) throws Deletes the database index on the specified table and columns if exactly one such index exists.
func drop(table name: String) throws Deletes a database table.
func drop(view name: String) throws Deletes a database view.
func dropFTS4SynchronizationTriggers(forTable tableName: String) throws Deletes the synchronization triggers for a synchronized FTS4 table.
func dropFTS5SynchronizationTriggers(forTable tableName: String) throws Deletes the synchronization triggers for a synchronized FTS5 table.
func dumpContent(format: some DumpFormat = .debug(), to stream: (any TextOutputStream)? = nil) throws Prints the contents of the database.
func dumpRequest(_ request: some FetchRequest, format: some DumpFormat = .debug(), to stream: (any TextOutputStream)? = nil) throws Prints the results of a request.
func dumpSQL(_ sql: SQL, format: some DumpFormat = .debug(), to stream: (any TextOutputStream)? = nil) throws Prints the results of all statements in the provided SQL.
func dumpSchema(to stream: (any TextOutputStream)? = nil) throws Prints the schema of the database.
func dumpTables(_ tables: [String], format: some DumpFormat = .debug(), tableHeader: DumpTableHeaderOptions = .automatic, stableOrder: Bool = false, to stream: (any TextOutputStream)? = nil) throws Prints the contents of the provided tables and views.
func execute(literal sqlLiteral: SQL) throws Executes one or several SQL statements.
func execute(sql: String, arguments: StatementArguments = StatementArguments()) throws Executes one or several SQL statements.
func foreignKeyViolations() throws -> RecordCursor<ForeignKeyViolation> Returns a cursor over foreign key violations in the database.
func foreignKeyViolations(in tableName: String, in schemaName: String? = nil) throws -> RecordCursor<ForeignKeyViolation> Returns a cursor over foreign key violations in the table.
func foreignKeys(on tableName: String, in schemaName: String? = nil) throws -> [ForeignKeyInfo] Returns the foreign keys defined on table named tableName.
func inSavepoint(_ operations: () throws -> TransactionCompletion) throws Wraps database operations inside a savepoint.
func inTransaction(_ kind: TransactionKind? = nil, _ operations: () throws -> TransactionCompletion) throws Wraps database operations inside a database transaction.
func indexes(on tableName: String, in schemaName: String? = nil) throws -> [IndexInfo] The indexes on table named tableName.
func makeFTS5Pattern(rawPattern: String, forTable table: String) throws -> FTS5Pattern Creates an FTS5 pattern from a raw pattern string.
func makeStatement(literal sqlLiteral: SQL) throws -> Statement Returns a new prepared statement that can be reused.
func makeStatement(sql: String) throws -> Statement Returns a new prepared statement that can be reused.
func makeTokenizer(_ descriptor: FTS5TokenizerDescriptor) throws -> any FTS5Tokenizer Creates an FTS5 tokenizer, given its descriptor.
func notifyChanges(in region: some DatabaseRegionConvertible) throws Notifies that some changes were performed in the provided database region.
func primaryKey(_ tableName: String, in schemaName: String? = nil) throws -> PrimaryKeyInfo The primary key for table named tableName.
func readOnly<T>(_ value: () throws -> T) throws -> T Executes read-only database operations, and returns their result after they have finished executing.
func registerAccess(to region: @autoclosure () -> some DatabaseRegionConvertible) throws Reports the database region to ValueObservation.
func reindex(collation: DatabaseCollation) throws Deletes and recreates from scratch all indices that use this collation.
func reindex(collation: Database.CollationName) throws Deletes and recreates from scratch all indices that use this collation.
func releaseMemory() Frees as much memory as possible.
func remove(collation: DatabaseCollation) Removes a collation.
func remove(function: DatabaseFunction) Removes a custom SQL function.
func rename(table name: String, to newName: String) throws Renames a database table.
func rollback() throws Rollbacks a database transaction.
func schemaVersion() throws -> Int32 Returns the current schema version (PRAGMA schema_version).
func table(_ tableName: String, hasUniqueKey columns: some Collection<String>) throws -> Bool Returns whether a sequence of columns uniquely identifies a row.
func tableExists(_ name: String, in schemaName: String? = nil) throws -> Bool Returns whether a table exists
func trace(options: TracingOptions = .statement, _ trace: ((TraceEvent) -> Void)? = nil) Registers a tracing function.
func triggerExists(_ name: String, in schemaName: String? = nil) throws -> Bool Returns whether a trigger exists, in the main or temp schema, or in an attached database.
func viewExists(_ name: String, in schemaName: String? = nil) throws -> Bool Returns whether a view exists, in the main or temp schema, or in an attached database.
enum BusyModeWhen there are several connections to a database, a connection may try to access the database while it is locked by another connection.
enum CheckpointModeThe available checkpoint modes.
struct CollationNameThe name of a string comparison function used by SQLite.
struct ColumnTypeAn SQL column type.
enum ConflictResolutionAn SQLite conflict resolution.
enum ForeignKeyActionA foreign key action.
struct StorageClassAn SQLite storage class.
enum TraceEventA trace event.
struct TracingOptionsAn option for the SQLite tracing feature.
@frozen enum TransactionCompletionA transaction commit, or rollback.
enum TransactionKindA transaction kind.
typealias BusyCallback = (_ numberOfTries: Int) -> BoolSee BusyMode and https://www.sqlite.org/c3ref/busy_handler.html
typealias LogErrorFunction = (_ resultCode: ResultCode, _ message: String) -> VoidAn error log function that takes an error code and message.