Package org.redisson.api

Interface RDequeReactive<V>

Type Parameters:

V - the type of elements held in this collection

All Superinterfaces:

RCollectionReactive<V>, RExpirableReactive, RObjectReactive, RQueueReactive<V>

All Known Subinterfaces:

RBlockingDequeReactive<V>

public interface RDequeReactive<V>
extends RQueueReactive<V>

Reactive interface for Deque object

Author:

Nikita Koksharov

Method Summary

Modifier and Type	Method	Description
reactor.core.publisher.Mono<>	addFirst(V e)	Adds element at the head of this deque.
reactor.core.publisher.Mono<>	addFirstIfExists(V... elements)	Adds element at the head of existing deque.
reactor.core.publisher.Mono<>	addLast(V e)	Adds element at the tail of this deque.
reactor.core.publisher.Mono<>	addLastIfExists(V... elements)	Adds element at the tail of existing deque.
reactor.core.publisher.Flux<V>	descendingIterator()
reactor.core.publisher.Mono<V>	getLast()	Returns element at the tail of this deque or null if there are no elements in deque.
reactor.core.publisher.Mono<V>	move(DequeMoveArgs args)	Move element from this deque to the given destination deque.
reactor.core.publisher.Mono<>	offerFirst(V e)	Adds element at the head of this deque.
reactor.core.publisher.Mono<>	offerLast(V e)	Adds element at the tail of this deque.
reactor.core.publisher.Mono<V>	peekFirst()	Returns element at the head of this deque or null if there are no elements in deque.
reactor.core.publisher.Mono<V>	peekLast()	Returns element at the tail of this deque or null if there are no elements in deque.
reactor.core.publisher.Mono<V>	pollFirst()	Retrieves and removes element at the head of this deque.
reactor.core.publisher.Flux<V>	pollFirst(int limit)	Retrieves and removes the head elements of this queue.
reactor.core.publisher.Mono<V>	pollLast()	Retrieves and removes element at the tail of this deque.
reactor.core.publisher.Flux<V>	pollLast(int limit)	Retrieves and removes the tail elements of this queue.
reactor.core.publisher.Mono<V>	pop()	Retrieves and removes element at the head of this deque.
reactor.core.publisher.Mono<>	push(V e)	Adds element at the head of this deque.
reactor.core.publisher.Mono<V>	removeFirst()	Retrieves and removes the first element of deque.
reactor.core.publisher.Mono<>	o)	Removes first occurrence of element o
reactor.core.publisher.Mono<V>	removeLast()	Retrieves and removes the last element of deque.
reactor.core.publisher.Mono<>	o)	Removes last occurrence of element o

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, expireAt, expireAt, expireAt, remainTimeToLive

Methods inherited from interface org.redisson.api.RObjectReactive

addListener, 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.RQueueReactive

offer, peek, poll, poll, pollLastAndOfferFirstTo, readAll

Method Detail

addFirstIfExists

reactor.core.publisher.Mono<> addFirstIfExists(V... elements)

Adds element at the head of existing deque.

Parameters:

elements - - elements to add

Returns:

length of the list

addLastIfExists

reactor.core.publisher.Mono<> addLastIfExists(V... elements)

Adds element at the tail of existing deque.

Parameters:

elements - - elements to add

Returns:

length of the list

descendingIterator

reactor.core.publisher.Flux<V> descendingIterator()

removeLastOccurrence

reactor.core.publisher.Mono<> removeLastOccurrence( o)

Removes last occurrence of element o

Parameters:

o - - element

Returns:

true if object has been removed otherwise false

removeLast

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

Retrieves and removes the last element of deque. Returns null if there are no elements in deque.

Returns:

element

removeFirst

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

Retrieves and removes the first element of deque. Returns null if there are no elements in deque.

Returns:

element

removeFirstOccurrence

reactor.core.publisher.Mono<> removeFirstOccurrence( o)

Removes first occurrence of element o

Parameters:

o - - element to remove

Returns:

true if object has been removed otherwise false

push

reactor.core.publisher.Mono<> push(V e)

Adds element at the head of this deque.

Parameters:

e - - element to add

Returns:

void

pop

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

Retrieves and removes element at the head of this deque. Returns null if there are no elements in deque.

Returns:

element

pollLast

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

Retrieves and removes element at the tail of this deque. Returns null if there are no elements in deque.

Returns:

element

pollFirst

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

Retrieves and removes element at the head of this deque. Returns null if there are no elements in deque.

Returns:

element

pollLast

reactor.core.publisher.Flux<V> pollLast(int limit)

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

Returns:

list of tail elements

pollFirst

reactor.core.publisher.Flux<V> pollFirst(int limit)

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

Returns:

list of head elements

peekLast

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

Returns element at the tail of this deque or null if there are no elements in deque.

Returns:

element

peekFirst

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

Returns element at the head of this deque or null if there are no elements in deque.

Returns:

element

offerLast

reactor.core.publisher.Mono<> offerLast(V e)

Adds element at the tail of this deque.

Parameters:

e - - element to add

Returns:

true if element was added to this deque otherwise false

getLast

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

Returns element at the tail of this deque or null if there are no elements in deque.

Returns:

element

addLast

reactor.core.publisher.Mono<> addLast(V e)

Adds element at the tail of this deque.

Parameters:

e - - element to add

Returns:

void

addFirst

reactor.core.publisher.Mono<> addFirst(V e)

Adds element at the head of this deque.

Parameters:

e - - element to add

Returns:

void

offerFirst

reactor.core.publisher.Mono<> offerFirst(V e)

Adds element at the head of this deque.

Parameters:

e - - element to add

Returns:

true if element was added to this deque otherwise false

move

reactor.core.publisher.Mono<V> move(DequeMoveArgs args)

Move element from this deque to the given destination deque. Returns moved element.

Usage examples:

 V element = deque.move(DequeMoveArgs.pollLast()
                                 .addFirstTo("deque2"));
 

 V elements = deque.move(DequeMoveArgs.pollFirst()
                                 .addLastTo("deque2"));
 

Requires Redis 6.2.0 and higher.

Parameters:

args - - arguments object

Returns:

moved element