LazyDatabase class
A special database executor that delegates work to another QueryExecutor. The other executor is lazily opened by a DatabaseOpener.
- Inheritance
-
- Object
- QueryExecutor
- LazyDatabase
- Available extensions
Constructors
- LazyDatabase(DatabaseOpener opener, {SqlDialect dialect = SqlDialect.sqlite})
-
Declares a LazyDatabase that will run
opener
when the database is first requested to be opened. You must specify the samedialect
as the underlying database has
Properties
- dialect → SqlDialect
-
The SqlDialect to use for this database engine.
no setteroverride
- hashCode → int
-
The hash code for this object.
no setterinherited
- opener → DatabaseOpener
-
The function that will open the database when this LazyDatabase gets
opened for the first time.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
beginExclusive(
) → QueryExecutor -
Returns a new QueryExecutor that, when first opened, takes an exclusive
lock over
this
executor and prevents queries from running until it is closed.override -
beginTransaction(
) → TransactionExecutor -
Starts a TransactionExecutor.
override
-
close(
) → Future< void> -
Closes this database connection and releases all resources associated with
it. Implementations should also handle close calls in a state where the
database isn't open.
override
-
ensureOpen(
QueryExecutorUser user) → Future< bool> -
Opens the executor, if it has not yet been opened.
override
-
interceptWith(
QueryInterceptor interceptor) → QueryExecutor -
Available on QueryExecutor, provided by the ApplyInterceptor extension
Returns a QueryExecutor that will usethis
executor internally, but with calls intercepted by the giveninterceptor
. -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
runBatched(
BatchedStatements statements) → Future< void> -
Prepares and runs
statements
.override -
runCustom(
String statement, [List< Object?> ? args]) → Future<void> -
Runs a custom SQL statement without any variables. The result of that
statement will be ignored.
override
-
runDelete(
String statement, List< Object?> args) → Future<int> -
Runs an delete statement and returns how many rows where affected.
override
-
runInsert(
String statement, List< Object?> args) → Future<int> -
Runs an insert statement with the given variables. Returns the row id or
the auto_increment id of the inserted row.
override
-
runSelect(
String statement, List< Object?> args) → Future<List< Map< >String, Object?> > -
Runs a select statement with the given variables and returns the raw
results.
override
-
runUpdate(
String statement, List< Object?> args) → Future<int> -
Runs an update statement with the given variables and returns how many
rows where affected.
override
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited