Class FlowableIgnoreElements.IgnoreElementsSubscriber<T>

java.lang.Object
io.reactivex.rxjava3.internal.operators.flowable.FlowableIgnoreElements.IgnoreElementsSubscriber<T>
All Implemented Interfaces:
FlowableSubscriber<T>, QueueFuseable<T>, QueueSubscription<T>, SimpleQueue<T>, org.reactivestreams.Subscriber<T>, org.reactivestreams.Subscription
Enclosing class:
FlowableIgnoreElements<T>
static final class FlowableIgnoreElements.IgnoreElementsSubscriber<T> extends Object implements FlowableSubscriber<T>, QueueSubscription<T>

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    (package private) final org.reactivestreams.Subscriber<? super T>
    downstream
     
    (package private) org.reactivestreams.Subscription
    upstream
     

    Fields inherited from interface QueueFuseable

    ANY, ASYNC, BOUNDARY, NONE, SYNC

  • Constructor Summary

    Constructors
    Constructor
    Description
    IgnoreElementsSubscriber(org.reactivestreams.Subscriber<? super T> downstream)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    cancel()
     
    void
    clear()
    Removes all enqueued items from this queue.
    boolean
    isEmpty()
    Returns true if the queue is empty.
    boolean
    offer(T e)
    Atomically enqueue a single value.
    boolean
    offer(T v1, T v2)
    Atomically enqueue two values.
    void
    onComplete()
     
    void
    onError(Throwable t)
     
    void
    onNext(T t)
     
    void
    onSubscribe(org.reactivestreams.Subscription s)
    Implementors of this method should make sure everything that needs to be visible in Subscriber.onNext(Object) is established before calling Subscription.request(long).
    T
    poll()
    Tries to dequeue a value (non-null) or returns null if the queue is empty.
    void
    request(long n)
     
    int
    requestFusion(int mode)
    Request a fusion mode from the upstream.

    Methods inherited from class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • downstream

      final org.reactivestreams.Subscriber<? super T> downstream

    • upstream

      org.reactivestreams.Subscription upstream

  • Constructor Details

    • IgnoreElementsSubscriber

      IgnoreElementsSubscriber(org.reactivestreams.Subscriber<? super T> downstream)

  • Method Details

    • onSubscribe

      public void onSubscribe(org.reactivestreams.Subscription s)
      Description copied from interface: FlowableSubscriber
      Implementors of this method should make sure everything that needs to be visible in Subscriber.onNext(Object) is established before calling Subscription.request(long). In practice this means no initialization should happen after the request() call and additional behavior is thread safe in respect to onNext.
      Specified by:
      onSubscribe in interface FlowableSubscriber<T>
      Specified by:
      onSubscribe in interface org.reactivestreams.Subscriber<T>

    • onNext

      public void onNext(T t)
      Specified by:
      onNext in interface org.reactivestreams.Subscriber<T>

    • onError

      public void onError(Throwable t)
      Specified by:
      onError in interface org.reactivestreams.Subscriber<T>

    • onComplete

      public void onComplete()
      Specified by:
      onComplete in interface org.reactivestreams.Subscriber<T>

    • offer

      public boolean offer(T e)
      Description copied from interface: SimpleQueue
      Atomically enqueue a single value.
      Specified by:
      offer in interface SimpleQueue<T>
      Parameters:
      e - the value to enqueue, not null
      Returns:
      true if successful, false if the value was not enqueued likely due to reaching the queue capacity)

    • offer

      public boolean offer(T v1, T v2)
      Description copied from interface: SimpleQueue
      Atomically enqueue two values.
      Specified by:
      offer in interface SimpleQueue<T>
      Parameters:
      v1 - the first value to enqueue, not null
      v2 - the second value to enqueue, not null
      Returns:
      true if successful, false if the value was not enqueued likely due to reaching the queue capacity)

    • poll

      @Nullable public T poll()
      Description copied from interface: SimpleQueue
      Tries to dequeue a value (non-null) or returns null if the queue is empty.

      If the producer uses SimpleQueue.offer(Object, Object) and when polling in pairs, if the first poll() returns a non-null item, the second poll() is guaranteed to return a non-null item as well.

      Specified by:
      poll in interface SimpleQueue<T>
      Returns:
      the item or null to indicate an empty queue

    • isEmpty

      public boolean isEmpty()
      Description copied from interface: SimpleQueue
      Returns true if the queue is empty.

      Note however that due to potential fused functions in SimpleQueue.poll() it is possible this method returns false but then poll() returns null because the fused function swallowed the available item(s).

      Specified by:
      isEmpty in interface SimpleQueue<T>
      Returns:
      true if the queue is empty

    • clear

      public void clear()
      Description copied from interface: SimpleQueue
      Removes all enqueued items from this queue.
      Specified by:
      clear in interface SimpleQueue<T>

    • request

      public void request(long n)
      Specified by:
      request in interface org.reactivestreams.Subscription

    • cancel

      public void cancel()
      Specified by:
      cancel in interface org.reactivestreams.Subscription

    • requestFusion

      public int requestFusion(int mode)
      Description copied from interface: QueueFuseable
      Request a fusion mode from the upstream.

      This should be called before onSubscribe returns.

      Calling this method multiple times or after onSubscribe finished is not allowed and may result in undefined behavior.

      Specified by:
      requestFusion in interface QueueFuseable<T>
      Parameters:
      mode - the requested fusion mode, allowed values are QueueFuseable.SYNC, QueueFuseable.ASYNC, QueueFuseable.ANY combined with QueueFuseable.BOUNDARY (e.g., requestFusion(SYNC | BOUNDARY)).
      Returns:
      the established fusion mode: QueueFuseable.NONE, QueueFuseable.SYNC, QueueFuseable.ASYNC.