com.github.davidmoten.rx.util

Class DrainerSyncBiased<T>

java.lang.Object

com.github.davidmoten.rx.util.DrainerSyncBiased<T>

Type Parameters:

T - type of the items being queued and emitted by this drainer

All Implemented Interfaces:

Drainer<T>, rx.Observer<T>, rx.Producer

public final class DrainerSyncBiased<T>
extends Object
implements Drainer<T>

Optimized for when request method is called on same thread as the Observer methods.

Method Summary

Methods

Modifier and Type	Method and Description
static <T> DrainerSyncBiased<T>	create(Queue<T> queue, rx.Subscriber<? super T> child)
void	onCompleted()
void	onError(Throwable e)
void	onNext(T t)
void	request(long n)
long	surplus() Returns the current best estimate of

Methods inherited from class java.lang.Object

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

Method Detail

create

public static <T> DrainerSyncBiased<T> create(Queue<T> queue,
                              rx.Subscriber<? super T> child)

request

public void request(long n)

Specified by:

request in interface rx.Producer

onCompleted

public void onCompleted()

Specified by:

onCompleted in interface rx.Observer<T>

onError

public void onError(Throwable e)

Specified by:

onError in interface rx.Observer<T>

onNext

public void onNext(T t)

Specified by:

onNext in interface rx.Observer<T>

surplus

public long surplus()

Description copied from interface: Drainer

Returns the current best estimate of

 currentExpected + numQueuedEmissions + numEmitted - totalRequested -
 

This value can then be subtracted from a request from downstream to estimate the number required from upstream.

Specified by:

surplus in interface Drainer<T>

Returns:

the current count of surplus emissions