org.redisson.api

Interface RDequeRx<V>

Type Parameters:

V - the type of elements held in this collection

All Superinterfaces:

RCollectionRx<V>, RExpirableRx, RObjectRx, RQueueRx<V>

All Known Subinterfaces:

RBlockingDequeRx<V>

public interface RDequeRx<V>
extends RQueueRx<V>

RxJava2 interface for Deque object

Author:

Nikita Koksharov

Method Summary

Modifier and Type	Method and Description
io.reactivex.rxjava3.core.Completable	addFirst(V e) Adds element at the head of this deque.
io.reactivex.rxjava3.core.Single<Integer>	addFirstIfExists(V... elements) Adds element at the head of existing deque.
io.reactivex.rxjava3.core.Completable	addLast(V e) Adds element at the tail of this deque.
io.reactivex.rxjava3.core.Single<Integer>	addLastIfExists(V... elements) Adds element at the tail of existing deque.
io.reactivex.rxjava3.core.Flowable<V>	descendingIterator()
io.reactivex.rxjava3.core.Maybe<V>	getLast() Returns element at the tail of this deque or null if there are no elements in deque.
io.reactivex.rxjava3.core.Maybe<V>	move(DequeMoveArgs args) Move element from this deque to the given destination deque.
io.reactivex.rxjava3.core.Single<Boolean>	offerFirst(V e) Adds element at the head of this deque.
io.reactivex.rxjava3.core.Single<Boolean>	offerLast(V e) Adds element at the tail of this deque.
io.reactivex.rxjava3.core.Maybe<V>	peekFirst() Returns element at the head of this deque or null if there are no elements in deque.
io.reactivex.rxjava3.core.Maybe<V>	peekLast() Returns element at the tail of this deque or null if there are no elements in deque.
io.reactivex.rxjava3.core.Maybe<V>	pollFirst() Retrieves and removes element at the head of this deque.
io.reactivex.rxjava3.core.Flowable<V>	pollFirst(int limit) Retrieves and removes the head elements of this queue.
io.reactivex.rxjava3.core.Maybe<V>	pollLast() Retrieves and removes element at the tail of this deque.
io.reactivex.rxjava3.core.Flowable<V>	pollLast(int limit) Retrieves and removes the tail elements of this queue.
io.reactivex.rxjava3.core.Maybe<V>	pop() Retrieves and removes element at the head of this deque.
io.reactivex.rxjava3.core.Completable	push(V e) Adds element at the head of this deque.
io.reactivex.rxjava3.core.Maybe<V>	removeFirst() Retrieves and removes the first element of deque.
io.reactivex.rxjava3.core.Single<Boolean>	removeFirstOccurrence(Object o) Removes first occurrence of element o
io.reactivex.rxjava3.core.Maybe<V>	removeLast() Retrieves and removes the last element of deque.
io.reactivex.rxjava3.core.Single<Boolean>	removeLastOccurrence(Object o) Removes last occurrence of element o

Methods inherited from interface org.redisson.api.RQueueRx

offer, peek, poll, poll, pollLastAndOfferFirstTo, readAll

Methods inherited from interface org.redisson.api.RCollectionRx

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

Methods inherited from interface org.redisson.api.RExpirableRx

clearExpire, expire, expireAt, expireAt, expireAt, remainTimeToLive

Methods inherited from interface org.redisson.api.RObjectRx

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

Method Detail

addFirstIfExists

io.reactivex.rxjava3.core.Single<Integer> addFirstIfExists(V... elements)

Adds element at the head of existing deque.

Parameters:

elements - - elements to add

Returns:

length of the list

addLastIfExists

io.reactivex.rxjava3.core.Single<Integer> addLastIfExists(V... elements)

Adds element at the tail of existing deque.

Parameters:

elements - - elements to add

Returns:

length of the list

descendingIterator

io.reactivex.rxjava3.core.Flowable<V> descendingIterator()

removeLastOccurrence

io.reactivex.rxjava3.core.Single<Boolean> removeLastOccurrence(Object o)

Removes last occurrence of element o

Parameters:

o - - element

Returns:

true if object has been removed otherwise false

removeLast

io.reactivex.rxjava3.core.Maybe<V> removeLast()

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

Returns:

element

removeFirst

io.reactivex.rxjava3.core.Maybe<V> removeFirst()

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

Returns:

element

removeFirstOccurrence

io.reactivex.rxjava3.core.Single<Boolean> removeFirstOccurrence(Object o)

Removes first occurrence of element o

Parameters:

o - - element to remove

Returns:

true if object has been removed otherwise false

push

io.reactivex.rxjava3.core.Completable push(V e)

Adds element at the head of this deque.

Parameters:

e - - element to add

Returns:

void

pop

io.reactivex.rxjava3.core.Maybe<V> pop()

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

Returns:

element

pollLast

io.reactivex.rxjava3.core.Maybe<V> pollLast()

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

Returns:

element

pollFirst

io.reactivex.rxjava3.core.Maybe<V> pollFirst()

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

Returns:

element

pollLast

io.reactivex.rxjava3.core.Flowable<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

io.reactivex.rxjava3.core.Flowable<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

io.reactivex.rxjava3.core.Maybe<V> peekLast()

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

Returns:

element

peekFirst

io.reactivex.rxjava3.core.Maybe<V> peekFirst()

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

Returns:

element

offerLast

io.reactivex.rxjava3.core.Single<Boolean> 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

io.reactivex.rxjava3.core.Maybe<V> getLast()

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

Returns:

element

addLast

io.reactivex.rxjava3.core.Completable addLast(V e)

Adds element at the tail of this deque.

Parameters:

e - - element to add

Returns:

void

addFirst

io.reactivex.rxjava3.core.Completable addFirst(V e)

Adds element at the head of this deque.

Parameters:

e - - element to add

Returns:

void

offerFirst

io.reactivex.rxjava3.core.Single<Boolean> 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

io.reactivex.rxjava3.core.Maybe<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