Package org.redisson.api

Interface RQueueReactive<V>

Type Parameters:

V - the type of elements held in this collection

All Superinterfaces:

RCollectionReactive<V>, RExpirableReactive, RObjectReactive

All Known Subinterfaces:

RBlockingDequeReactive<V>, RBlockingQueueReactive<V>, RDequeReactive<V>, RRingBufferReactive<V>, RTransferQueueReactive<V>

public interface RQueueReactive<V>
extends RCollectionReactive<V>

Reactive interface for Queue object

Author:

Nikita Koksharov

Method Summary

Modifier and Type	Method	Description
reactor.core.publisher.Mono<Integer>	addListener(ObjectListener listener)	Adds object event listener
reactor.core.publisher.Mono<Boolean>	offer(V e)	Inserts the specified element into this queue.
reactor.core.publisher.Mono<V>	peek()	Retrieves the head of this queue in async mode.
reactor.core.publisher.Mono<V>	poll()	Retrieves and removes the head of this queue in async mode.
reactor.core.publisher.Mono<List<V>>	poll(int limit)	Retrieves and removes the head elements of this queue.
reactor.core.publisher.Mono<V>	pollLastAndOfferFirstTo(String queueName)	Retrieves and removes last available tail element of this queue queue and adds it at the head of queueName.
reactor.core.publisher.Mono<List<V>>	readAll()	Returns all queue elements at once

Methods inherited from interface org.redisson.api.RCollectionReactive

add, addAll, addAll, contains, containsAll, iterator, remove, removeAll, retainAll, size

Methods inherited from interface org.redisson.api.RExpirableReactive

clearExpire, expire, expire, expire, expireAt, expireAt, expireIfGreater, expireIfGreater, expireIfLess, expireIfLess, expireIfNotSet, expireIfNotSet, expireIfSet, expireIfSet, getExpireTime, remainTimeToLive

Methods inherited from interface org.redisson.api.RObjectReactive

copy, copy, copy, copyAndReplace, copyAndReplace, delete, dump, getCodec, getIdleTime, getName, isExists, migrate, move, removeListener, rename, renamenx, restore, restore, restoreAndReplace, restoreAndReplace, sizeInMemory, touch, unlink

Method Details

peek

reactor.core.publisher.Mono<V> peek()

Retrieves the head of this queue in async mode.

Returns:

the head of this queue, or null

poll

reactor.core.publisher.Mono<V> poll()

Retrieves and removes the head of this queue in async mode.

Returns:

the head of this queue, or null

poll

reactor.core.publisher.Mono<List<V>> poll(int limit)

Retrieves and removes the head elements of this queue. Elements amount limited by limit param.

Returns:

list of head elements

offer

reactor.core.publisher.Mono<Boolean> offer(V e)

Inserts the specified element into this queue.

Parameters:

e - the element to add

Returns:

true if successful, or false

Throws:

ClassCastException - if the class of the specified element prevents it from being added to this queue

NullPointerException - if the specified element is null

pollLastAndOfferFirstTo

reactor.core.publisher.Mono<V> pollLastAndOfferFirstTo(String queueName)

Retrieves and removes last available tail element of this queue queue and adds it at the head of queueName.

Parameters:

queueName - - names of destination queue

Returns:

the tail of this queue, or null if the specified waiting time elapses before an element is available

readAll

reactor.core.publisher.Mono<List<V>> readAll()

Returns all queue elements at once

Returns:

elements

addListener

reactor.core.publisher.Mono<Integer> addListener(ObjectListener listener)

Adds object event listener

Specified by:

addListener in interface RObjectReactive

Parameters:

listener - - object event listener

Returns:

listener id

See Also:

• TrackingListener
• ExpiredObjectListener
• DeletedObjectListener
• ListAddListener
• ListRemoveListener