Query<DataType, ErrorType> class
- Inheritance
-
- Object
- StateNotifier<
QueryState< DataType, ErrorType> > - Query
Constructors
-
Query(String key, QueryFn<
DataType> queryFn, {DataType? initial, required RetryConfig retryConfig, required RefreshConfig refreshConfig, JsonConfig<DataType> ? jsonConfig})
Properties
- data → DataType?
-
no setter
-
dataStream
→ Stream<
DataType> -
no setter
-
debugState
→ QueryState<
DataType, ErrorType> -
A development-only way to access state outside of
StateNotifier.no setterinherited - error → ErrorType?
-
no setter
-
errorStream
→ Stream<
ErrorType> -
no setter
- hasData → bool
-
no setter
- hasError → bool
-
no setter
- hashCode → int
-
The hash code for this object.
no setteroverride
- hasListeners → bool
-
If a listener has been added using addListener and hasn't been removed yet.
no setterinherited
- isInactive → bool
-
no setter
- isInitial → bool
-
no setter
- isLoading → bool
-
no setter
- isRefreshing → bool
-
no setter
-
jsonConfig
→ JsonConfig<
DataType> ? -
final
- key → String
-
final
- mounted → bool
-
Whether dispose was called or not.
no setterinherited
- onError ↔ ErrorListener?
-
A callback for error reporting if one of the listeners added with addListener throws.
getter/setter pairinherited
- refreshConfig → RefreshConfig
-
final
- retryConfig → RetryConfig
-
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
-
state
↔ QueryState<
DataType, ErrorType> -
The current "state" of this
StateNotifier.getter/setter pairinherited -
stream
→ Stream<
QueryState< DataType, ErrorType> > -
A broadcast stream representation of a
StateNotifier.no setterinherited
Methods
-
addListener(
Listener< QueryState< listener, {bool fireImmediately = true}) → RemoveListenerDataType, ErrorType> > -
Subscribes to this object.
override
-
cancellableRetryOperation(
FutureOr< DataType?> operation(), {required RetryConfig config, required void onSuccessful(DataType?), required void onFailed(ErrorType?)}) → CancelableOperation<void> -
inherited
-
cast<
NewDataType, NewErrorType> () → Query< NewDataType, NewErrorType> -
dispose(
) → void -
Frees all the resources associated to this object.
override
-
fetch(
) → Future< DataType?> -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
refresh(
) → Future< DataType?> -
reset(
) → Future< void> -
resolve(
Widget data(DataType data), {required Widget error(ErrorType data), required Widget loading(), Widget offline()?}) → Widget -
resolveWith(
BuildContext context, Widget data(DataType data), {required Widget error(ErrorType error)?, required Widget loading()?, Widget offline()?}) → Widget -
retryOperation(
FutureOr< DataType?> operation(), {required RetryConfig config, required void onSuccessful(DataType?), required void onFailed(ErrorType?)}) → Future<void> -
inherited
-
setData(
DataType data) → void -
toString(
) → String -
A string representation of this object.
inherited
-
updateQueryFn(
QueryFn< DataType> queryFn) → void -
updateShouldNotify(
QueryState< DataType, ErrorType> old, QueryState<DataType, ErrorType> current) → bool -
Whether to notify listeners or not when state changes
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
override