Provider<T extends Object> class abstract interface

A handle that looks up a bean of T each time get is called: the JSR-330 form of a lazy dependency (jakarta.inject.Provider).

An injection point of this type gets the same provider as an ObjectProvider<T> (which implements it): each get resolves the bean as if it were injected into the bean that holds the provider. Use it for a bean needed fresh on every use, or to break a cycle; ObjectProvider<T> offers more methods.

// The clock is looked up on every call.
import 'package:spring_core_dart/jakarta.dart' as jakarta;

@Named()
class Checkout {
  Checkout(this.clock);
  final jakarta.Provider<Clock> clock;

  DateTime now() => clock.get().now();
}

Spring (Java):

@Named
class Checkout {
  @Inject Provider<Clock> clock;
  Instant now() { return clock.get().instant(); }
}

Implementers

• ObjectProvider

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

get() → T

The bean, looked up now. Throws NoSuchBeanDefinitionException when none matches and NoUniqueBeanDefinitionException when several match and none wins.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited