org.tools4j.nobark.queue

Interface ConflationQueue.Poller<K,V>

Type Parameters:

K - the type of the conflation key

V - the type of values in the queue

All Known Subinterfaces:

ExchangeConflationQueue.ExchangePoller<K,V>

Enclosing interface:

ConflationQueue<K,V>

public static interface ConflationQueue.Poller<K,V>

Poller object used by the consumer to poll values.

Method Summary

Modifier and Type	Method and Description
default V	poll() Polls the queue and returns the value if any value was present in the queue, or null if the queue was empty.
V	poll(java.util.function.BiConsumer<? super K,? super V> consumer) Polls the queue passing an unused value in exchange to the queue.

Method Detail

poll

V poll(java.util.function.BiConsumer<? super K,? super V> consumer)

Polls the queue passing an unused value in exchange to the queue. The given consumer is invoked with conflation key and polled value if the queue was non-empty and the value is returned. If the queue was empty, null is returned.

Parameters:

consumer - consumer for conflation key and polled value

Returns:

the polled value, or null if the queue was empty

poll

default V poll()

Polls the queue and returns the value if any value was present in the queue, or null if the queue was empty.

Returns:

the polled value, or null if the queue was empty