ReflectiveInjector

A ReflectiveDependency injection container used for instantiating objects and resolving dependencies.

An Injector is a replacement for a new operator, which can automatically resolve the constructor dependencies.

In typical use, application code asks for the dependencies in the constructor and they are resolved by the Injector.

The following example creates an Injector configured to create Engine and Car.

@Injectable()
class Engine {
}
 
@Injectable()
class Car {
  Car(Engine engine);
}
 
var injector = ReflectiveInjector.resolveAndCreate([Car, Engine]);
var car = injector.get(Car);
expect(car is Car, true);
expect(car.engine is Engine, true);

Notice, we don't use the new operator because we explicitly want to have the Injector resolve all of the object's dependencies automatically.