AsyncAggregateValue<T> class

This class is used to asynchronously retrieve values returned from CollectionBase.aggregate, etc.

You can get the aggregate value of the collection from value.

load loads the file and reload reloads the file.

load is automatically executed when CollectionBase.aggregate is executed.

CollectionBase.aggregateなどから返される値を非同期で取得するためのクラスです。

valueからコレクションの集計値を取得できます。

loadで読み込みを行い、reloadで再読み込みを行います。

CollectionBase.aggregateを実行した時点で自動的にloadが実行されます。

Inheritance
Implemented types

Properties

hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
loading → Future<T>?
You can wait for it to load.
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
value → T?
The current value of the object. When the value changes, the callbacks registered with addListener will be invoked.
no setteroverride

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
dispose() → void
Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).
inherited
load() → Future<T?>
Retrieve the aggregate results of the collection from the server.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
reload() → Future<T?>
Retrieve the aggregate results of the collection from the server.
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited