rx.internal.producers

Class SingleProducer<T>

  • Type Parameters:
    T - the value type
    All Implemented Interfaces:
    Serializable, Producer 

    public final class SingleProducer<T>
extends AtomicBoolean
implements Producer
    A producer which emits a single value and completes the child on the first positive request.
    See Also:
    Serialized Form

    • Constructor Detail

      • SingleProducer

        public SingleProducer(Subscriber<? super T> child,
                      T value)
        Constructs the producer with the given target child and value to be emitted.
        Parameters:
        child - the child subscriber, non-null
        value - the value to be emitted, may be null

    • Method Detail

      • request

        public void request(long n)
        Description copied from interface: Producer
        Request a certain maximum number of items from this Producer. This is a way of requesting backpressure. To disable backpressure, pass Long.MAX_VALUE to this method.

        Requests are additive but if a sequence of requests totals more than Long.MAX_VALUE then Long.MAX_VALUE requests will be actioned and the extras may be ignored. Arriving at Long.MAX_VALUE by addition of requests cannot be assumed to disable backpressure. For example, the code below may result in Long.MAX_VALUE requests being actioned only. 

         request(100);
 request(Long.MAX_VALUE-1);
        Specified by:
        request in interface  Producer
        Parameters:
        n - the maximum number of items you want this Producer to produce, or Long.MAX_VALUE if you want the Producer to produce items at its own pace