Class FlowableIgnoreElements.IgnoreElementsSubscriber<T>
- java.lang.Object
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- io.reactivex.rxjava3.internal.operators.flowable.FlowableIgnoreElements.IgnoreElementsSubscriber<T>
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- 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 java.lang.Object implements FlowableSubscriber<T>, QueueSubscription<T>
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Field Summary
Fields Modifier and Type Field Description (package private) org.reactivestreams.Subscriber<? super T>
downstream
(package private) org.reactivestreams.Subscription
upstream
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Constructor Summary
Constructors Constructor Description IgnoreElementsSubscriber(org.reactivestreams.Subscriber<? super T> downstream)
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Method Summary
All Methods Instance Methods Concrete Methods 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(java.lang.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 inSubscriber.onNext(Object)
is established before callingSubscription.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.
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Field Detail
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downstream
final org.reactivestreams.Subscriber<? super T> downstream
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upstream
org.reactivestreams.Subscription upstream
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Constructor Detail
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IgnoreElementsSubscriber
IgnoreElementsSubscriber(org.reactivestreams.Subscriber<? super T> downstream)
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Method Detail
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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 inSubscriber.onNext(Object)
is established before callingSubscription.request(long)
. In practice this means no initialization should happen after therequest()
call and additional behavior is thread safe in respect toonNext
.- Specified by:
onSubscribe
in interfaceFlowableSubscriber<T>
- Specified by:
onSubscribe
in interfaceorg.reactivestreams.Subscriber<T>
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onError
public void onError(java.lang.Throwable t)
- Specified by:
onError
in interfaceorg.reactivestreams.Subscriber<T>
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onComplete
public void onComplete()
- Specified by:
onComplete
in interfaceorg.reactivestreams.Subscriber<T>
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offer
public boolean offer(T e)
Description copied from interface:SimpleQueue
Atomically enqueue a single value.- Specified by:
offer
in interfaceSimpleQueue<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)
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offer
public boolean offer(T v1, T v2)
Description copied from interface:SimpleQueue
Atomically enqueue two values.- Specified by:
offer
in interfaceSimpleQueue<T>
- Parameters:
v1
- the first value to enqueue, not nullv2
- 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)
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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 interfaceSimpleQueue<T>
- Returns:
- the item or null to indicate an empty queue
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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 interfaceSimpleQueue<T>
- Returns:
- true if the queue is empty
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clear
public void clear()
Description copied from interface:SimpleQueue
Removes all enqueued items from this queue.- Specified by:
clear
in interfaceSimpleQueue<T>
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request
public void request(long n)
- Specified by:
request
in interfaceorg.reactivestreams.Subscription
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cancel
public void cancel()
- Specified by:
cancel
in interfaceorg.reactivestreams.Subscription
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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 interfaceQueueFuseable<T>
- Parameters:
mode
- the requested fusion mode, allowed values areQueueFuseable.SYNC
,QueueFuseable.ASYNC
,QueueFuseable.ANY
combined withQueueFuseable.BOUNDARY
(e.g.,requestFusion(SYNC | BOUNDARY)
).- Returns:
- the established fusion mode:
QueueFuseable.NONE
,QueueFuseable.SYNC
,QueueFuseable.ASYNC
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