Package rx.observers

Class Subscribers


  • public final class Subscribers
    extends java.lang.Object
    Helper methods and utilities for creating and working with Subscriber objects.
    • Constructor Detail

      • Subscribers

        private Subscribers()
    • Method Detail

      • empty

        public static <T> Subscriber<T> empty()
        Returns an inert Subscriber that does nothing in response to the emissions or notifications from any Observable it subscribes to. Will throw an OnErrorNotImplementedException if onError method is called
        Type Parameters:
        T - the observed value type
        Returns:
        an inert Observer
      • create

        public static <T> Subscriber<T> create​(Action1<? super T> onNext)
        Creates a Subscriber that receives the emissions of any Observable it subscribes to via onNext but ignores onCompleted notifications; it will throw an OnErrorNotImplementedException if onError is invoked.
        Type Parameters:
        T - the observed value type
        Parameters:
        onNext - a function that handles each item emitted by an Observable
        Returns:
        a Subscriber that calls onNext for each emitted item from the Observable the Subscriber subscribes to
        Throws:
        java.lang.IllegalArgumentException - if onNext is null
      • create

        public static <T> Subscriber<T> create​(Action1<? super T> onNext,
                                               Action1<java.lang.Throwable> onError)
        Creates an Subscriber that receives the emissions of any Observable it subscribes to via onNext and handles any onError notification but ignores an onCompleted notification.
        Type Parameters:
        T - the observed value type
        Parameters:
        onNext - a function that handles each item emitted by an Observable
        onError - a function that handles an error notification if one is sent by an Observable
        Returns:
        an Subscriber that calls onNext for each emitted item from the Observable the Subscriber subscribes to, and calls onError if the Observable notifies of an error
        Throws:
        java.lang.IllegalArgumentException - if either onNext or onError are null
      • create

        public static <T> Subscriber<T> create​(Action1<? super T> onNext,
                                               Action1<java.lang.Throwable> onError,
                                               Action0 onComplete)
        Creates an Subscriber that receives the emissions of any Observable it subscribes to via onNext and handles any onError or onCompleted notifications.
        Type Parameters:
        T - the observed value type
        Parameters:
        onNext - a function that handles each item emitted by an Observable
        onError - a function that handles an error notification if one is sent by an Observable
        onComplete - a function that handles a sequence complete notification if one is sent by an Observable
        Returns:
        an Subscriber that calls onNext for each emitted item from the Observable the Subscriber subscribes to, calls onError if the Observable notifies of an error, and calls onComplete if the Observable notifies that the observable sequence is complete
        Throws:
        java.lang.IllegalArgumentException - if either onNext, onError, or onComplete are null
      • wrap

        public static <T> Subscriber<T> wrap​(Subscriber<? super T> subscriber)
        Returns a new Subscriber that passes all events to subscriber, has backpressure controlled by subscriber and uses the subscription list of subscriber when Subscriber.add(rx.Subscription) is called.
        Type Parameters:
        T - the observed value type
        Parameters:
        subscriber - the Subscriber to wrap.
        Returns:
        a new Subscriber that passes all events to subscriber, has backpressure controlled by subscriber and uses subscriber to manage unsubscription.
        Since:
        1.1.0