T
- the published item type@FunctionalInterface public static interface Flow.Publisher<T>
Flow.Subscriber
receives the same
items (via method onNext
) in the same order, unless
drops or errors are encountered. If a Publisher encounters an
error that does not allow items to be issued to a Subscriber,
that Subscriber receives onError
, and then receives no
further messages. Otherwise, when it is known that no further
messages will be issued to it, a subscriber receives onComplete
. Publishers ensure that Subscriber method
invocations for each subscription are strictly ordered in happens-before
order.
Publishers may vary in policy about whether drops (failures to issue an item because of resource limitations) are treated as unrecoverable errors. Publishers may also vary about whether Subscribers receive items that were produced or available before they subscribed.
Modifier and Type | Method and Description |
---|---|
void |
subscribe(Flow.Subscriber<? super T> subscriber)
Adds the given Subscriber if possible.
|
void subscribe(Flow.Subscriber<? super T> subscriber)
onError
method is invoked with an IllegalStateException
.
Otherwise, the Subscriber's onSubscribe
method is
invoked with a new Flow.Subscription
. Subscribers may
enable receiving items by invoking the request
method of this Subscription, and may unsubscribe by
invoking its cancel
method.subscriber
- the subscriberNullPointerException
- if subscriber is nullCopyright © 2007-2024, Oracle and/or its affiliates. All Rights Reserved. Use is subject to license terms.