Flow.Subscriber
public
static
interface
Flow.Subscriber
| java.util.concurrent.Flow.Subscriber<T> |
A receiver of messages. The methods in this interface are
invoked in strict sequential order for each Subscription.
Summary
Public methods | |
|---|---|
abstract
void
|
onComplete()
Method invoked when it is known that no additional Subscriber method invocations will occur for a Subscription that is not already terminated by error, after which no other Subscriber methods are invoked by the Subscription. |
abstract
void
|
onError(Throwable throwable)
Method invoked upon an unrecoverable error encountered by a Publisher or Subscription, after which no other Subscriber methods are invoked by the Subscription. |
abstract
void
|
onNext(T item)
Method invoked with a Subscription's next item. |
abstract
void
|
onSubscribe(Flow.Subscription subscription)
Method invoked prior to invoking any other Subscriber methods for the given Subscription. |
Public methods
onComplete
public abstract void onComplete ()
Method invoked when it is known that no additional Subscriber method invocations will occur for a Subscription that is not already terminated by error, after which no other Subscriber methods are invoked by the Subscription. If this method throws an exception, resulting behavior is undefined.
onError
public abstract void onError (Throwable throwable)
Method invoked upon an unrecoverable error encountered by a Publisher or Subscription, after which no other Subscriber methods are invoked by the Subscription. If this method itself throws an exception, resulting behavior is undefined.
| Parameters | |
|---|---|
throwable |
Throwable: the exception |
onNext
public abstract void onNext (T item)
Method invoked with a Subscription's next item. If this method throws an exception, resulting behavior is not guaranteed, but may cause the Subscription to be cancelled.
| Parameters | |
|---|---|
item |
T: the item |
onSubscribe
public abstract void onSubscribe (Flow.Subscription subscription)
Method invoked prior to invoking any other Subscriber methods for the given Subscription. If this method throws an exception, resulting behavior is not guaranteed, but may cause the Subscription not to be established or to be cancelled.
Typically, implementations of this method invoke subscription.request to enable receiving items.
| Parameters | |
|---|---|
subscription |
Flow.Subscription: a new subscription |