Examples with Consumer java8.util.function.Consumer used on opensource projects

Example 11 with Consumer

use of java8.util.function.Consumer in project streamsupport by stefan-zobel.

the class Spliterators method iterator.

// Iterators from Spliterators
/**
 * Creates an {@code Iterator} from a {@code Spliterator}.
 *
 * <p>Traversal of elements should be accomplished through the iterator.
 * The behaviour of traversal is undefined if the spliterator is operated
 * after the iterator is returned.
 *
 * @param <T> Type of elements
 * @param spliterator The spliterator
 * @return An iterator
 * @throws NullPointerException if the given spliterator is {@code null}
 */
public static <T> Iterator<T> iterator(Spliterator<? extends T> spliterator) {
    Objects.requireNonNull(spliterator);
    class Adapter implements Iterator<T>, Consumer<T> {

        boolean valueReady = false;

        T nextElement;

        @Override
        public void accept(T t) {
            valueReady = true;
            nextElement = t;
        }

        @Override
        public boolean hasNext() {
            if (!valueReady)
                spliterator.tryAdvance(this);
            return valueReady;
        }

        @Override
        public T next() {
            if (!valueReady && !hasNext())
                throw new NoSuchElementException();
            else {
                valueReady = false;
                T t = nextElement;
                nextElement = null;
                return t;
            }
        }

        @Override
        public void remove() {
            throw new UnsupportedOperationException("remove");
        }
    }
    return new Adapter();
}

Example 12 with Consumer

use of java8.util.function.Consumer in project azure-sdk-for-android by Azure.

the class PushNotificationClient method handlePushNotification.

/**
 * Handle incoming push notification.
 * Invoke corresponding chat event handle if registered.
 * @param pushNotification Incoming push notification payload from the FCM SDK.
 *
 * @return True if there's handler(s) for incoming push notification; otherwise, false.
 */
public boolean handlePushNotification(ChatPushNotification pushNotification) {
    this.logger.info(" Receive handle push notification request.");
    ChatEventType chatEventType = this.parsePushNotificationEventType(pushNotification);
    this.logger.info(" " + chatEventType + " received.");
    if (this.pushNotificationListeners.containsKey(chatEventType)) {
        ChatEvent event = this.parsePushNotificationEvent(chatEventType, pushNotification);
        Set<Consumer<ChatEvent>> callbacks = this.pushNotificationListeners.get(chatEventType);
        for (Consumer<ChatEvent> callback : callbacks) {
            this.logger.info(" invoke callback " + callback + " for " + chatEventType);
            callback.accept(event);
        }
        return true;
    }
    return false;
}