org.redisson.api

Interface RQueue<V>

Type Parameters:

V - the type of elements held in this collection

All Superinterfaces:

Collection<V>, Iterable<V>, Queue<V>, RCollectionAsync<V>, RExpirable, RExpirableAsync, RObject, RObjectAsync, RQueueAsync<V>

All Known Subinterfaces:

RBlockingDeque<V>, RBlockingQueue<V>, RBoundedBlockingQueue<V>, RDelayedQueue<V>, RDeque<V>, RPriorityBlockingDeque<V>, RPriorityBlockingQueue<V>, RPriorityDeque<V>, RPriorityQueue<V>, RRingBuffer<V>, RTransferQueue<V>

All Known Implementing Classes:

RedissonBlockingDeque, RedissonBlockingQueue, RedissonBoundedBlockingQueue, RedissonDelayedQueue, RedissonDeque, RedissonPriorityBlockingDeque, RedissonPriorityBlockingQueue, RedissonPriorityDeque, RedissonPriorityQueue, RedissonQueue, RedissonRingBuffer, RedissonTransferQueue

public interface RQueue<V>
extends Queue<V>, RExpirable, RQueueAsync<V>

Queue backed by Redis

Author:

Nikita Koksharov

Method Summary

Modifier and Type	Method and Description
int	addListener(ObjectListener listener) Adds object event listener
List<V>	poll(int limit) Retrieves and removes the head elements of this queue.
V	pollLastAndOfferFirstTo(String queueName) Retrieves and removes last available tail element of this queue queue and adds it at the head of queueName.
List<V>	readAll() Returns all queue elements at once

Methods inherited from interface java.util.Queue

add, element, offer, peek, poll, remove

Methods inherited from interface java.util.Collection

addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, parallelStream, remove, removeAll, removeIf, retainAll, size, spliterator, stream, toArray, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface org.redisson.api.RExpirable

clearExpire, expire, expireAt, expireAt, remainTimeToLive

Methods inherited from interface org.redisson.api.RObject

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

Methods inherited from interface org.redisson.api.RQueueAsync

addListenerAsync, offerAsync, peekAsync, pollAsync, pollAsync, pollLastAndOfferFirstToAsync, readAllAsync

Methods inherited from interface org.redisson.api.RCollectionAsync

addAllAsync, addAsync, containsAllAsync, containsAsync, removeAllAsync, removeAsync, retainAllAsync, sizeAsync

Methods inherited from interface org.redisson.api.RExpirableAsync

clearExpireAsync, expireAsync, expireAtAsync, expireAtAsync, remainTimeToLiveAsync

Methods inherited from interface org.redisson.api.RObjectAsync

copyAsync, deleteAsync, dumpAsync, getIdleTimeAsync, isExistsAsync, migrateAsync, moveAsync, removeListenerAsync, renameAsync, renamenxAsync, restoreAndReplaceAsync, restoreAndReplaceAsync, restoreAsync, restoreAsync, sizeInMemoryAsync, touchAsync, unlinkAsync

Method Detail

pollLastAndOfferFirstTo

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

List<V> readAll()

Returns all queue elements at once

Returns:

elements

poll

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

addListener

int addListener(ObjectListener listener)

Adds object event listener

Specified by:

addListener in interface RObject

Parameters:

listener - - object event listener

Returns:

listener id

See Also:

ExpiredObjectListener, DeletedObjectListener, ListAddListener, ListInsertListener, ListSetListener, ListRemoveListener, ListTrimListener