Package io.reactivex.rxjava3.internal.operators.single

Class SingleFlatMapIterableObservable.FlatMapIterableObserver<T,​R>

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void clear()
      Removes all enqueued items from this queue.
      void dispose()
      Dispose the resource, the operation should be idempotent.
      boolean isDisposed()
      Returns true if this resource has been disposed.
      boolean isEmpty()
      Returns true if the queue is empty.
      void onError​(java.lang.Throwable e)
      Notifies the SingleObserver that the Single has experienced an error condition.
      void onSubscribe​(Disposable d)
      Provides the SingleObserver with the means of cancelling (disposing) the connection (channel) with the Single in both synchronous (from within onSubscribe(Disposable) itself) and asynchronous manner.
      void onSuccess​(T value)
      Notifies the SingleObserver with a single item and that the Single has finished sending push-based notifications.
      R poll()
      Tries to dequeue a value (non-null) or returns null if the queue is empty.
      int requestFusion​(int mode)
      Request a fusion mode from the upstream.

      • Methods inherited from class java.util.concurrent.atomic.AtomicInteger

        accumulateAndGet, addAndGet, compareAndExchange, compareAndExchangeAcquire, compareAndExchangeRelease, compareAndSet, decrementAndGet, doubleValue, floatValue, get, getAcquire, getAndAccumulate, getAndAdd, getAndDecrement, getAndIncrement, getAndSet, getAndUpdate, getOpaque, getPlain, incrementAndGet, intValue, lazySet, longValue, set, setOpaque, setPlain, setRelease, toString, updateAndGet, weakCompareAndSet, weakCompareAndSetAcquire, weakCompareAndSetPlain, weakCompareAndSetRelease, weakCompareAndSetVolatile

      • Methods inherited from class java.lang.Number

        byteValue, shortValue

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • downstream

        final Observer<? super R> downstream

      • mapper

        final Function<? super T,​? extends java.lang.Iterable<? extends R>> mapper

      • it

        volatile java.util.Iterator<? extends R> it

      • cancelled

        volatile boolean cancelled

      • outputFused

        boolean outputFused

    • Constructor Detail

      • FlatMapIterableObserver

        FlatMapIterableObserver​(Observer<? super R> actual,
                        Function<? super T,​? extends java.lang.Iterable<? extends R>> mapper)

    • Method Detail

      • onSubscribe

        public void onSubscribe​(Disposable d)
        Description copied from interface: SingleObserver
        Provides the SingleObserver with the means of cancelling (disposing) the connection (channel) with the Single in both synchronous (from within onSubscribe(Disposable) itself) and asynchronous manner.
        Specified by:
        onSubscribe in interface SingleObserver<T>
        Parameters:
        d - the Disposable instance whose Disposable.dispose() can be called anytime to cancel the connection

      • dispose

        public void dispose()
        Description copied from interface: Disposable
        Dispose the resource, the operation should be idempotent.
        Specified by:
        dispose in interface Disposable

      • isDisposed

        public boolean isDisposed()
        Description copied from interface: Disposable
        Returns true if this resource has been disposed.
        Specified by:
        isDisposed in interface Disposable
        Returns:
        true if this resource has been disposed

      • clear

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

      • 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

      • poll

        @Nullable
public R 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