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Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC
/**
* Copyright (c) 2013-2024 Nikita Koksharov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.redisson.api;
import org.redisson.api.mapreduce.RCollectionMapReduce;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.stream.Stream;
/**
* Redis based implementation of {@link java.util.Set}
*
* @author Nikita Koksharov
*
* @param type of value
*/
public interface RSet extends Set, RExpirable, RSetAsync, RSortable> {
/**
* Adds all elements contained in the specified collection.
* Returns number of added elements.
*
* @param c - collection of elements to add
* @return number of added elements
*/
int addAllCounted(Collection c);
/**
* Removes all elements contained in the specified collection.
* Returns number of removed elements.
*
* @param c - collection of elements to add
* @return number of removed elements
*/
int removeAllCounted(Collection c);
/**
* Returns RCountDownLatch instance associated with value
*
* @param value - set value
* @return RCountDownLatch object
*/
RCountDownLatch getCountDownLatch(V value);
/**
* Returns RPermitExpirableSemaphore instance associated with value
*
* @param value - set value
* @return RPermitExpirableSemaphore object
*/
RPermitExpirableSemaphore getPermitExpirableSemaphore(V value);
/**
* Returns RSemaphore instance associated with value
*
* @param value - set value
* @return RSemaphore object
*/
RSemaphore getSemaphore(V value);
/**
* Returns RLock instance associated with value
*
* @param value - set value
* @return RLock object
*/
RLock getFairLock(V value);
/**
* Returns RReadWriteLock instance associated with value
*
* @param value - set value
* @return RReadWriteLock object
*/
RReadWriteLock getReadWriteLock(V value);
/**
* Returns lock instance associated with value
*
* @param value - set value
* @return RLock object
*/
RLock getLock(V value);
/**
* Returns stream of elements fetches elements in a batch.
* Batch size is defined by count param.
*
* @param count - size of elements batch
* @return stream of elements
*/
Stream stream(int count);
/**
* Returns stream of elements fetches elements in a batch.
* Batch size is defined by count param.
* If pattern is not null then only elements match this pattern are loaded.
*
* @param pattern - search pattern
* @param count - size of elements batch
* @return stream of elements
*/
Stream stream(String pattern, int count);
/**
* Returns stream of elements.
* If pattern is not null then only elements match this pattern are loaded.
*
* @param pattern - search pattern
* @return stream of elements
*/
Stream stream(String pattern);
/**
* Returns elements iterator fetches elements in a batch.
* Batch size is defined by count param.
*
* @param count - size of elements batch
* @return iterator
*/
Iterator iterator(int count);
/**
* Returns elements iterator fetches elements in a batch.
* Batch size is defined by count param.
* If pattern is not null then only elements match this pattern are loaded.
*
* @param pattern - search pattern
* @param count - size of elements batch
* @return iterator
*/
Iterator iterator(String pattern, int count);
/**
* Returns elements iterator.
* If pattern is not null then only elements match this pattern are loaded.
*
* @param pattern - search pattern
* @return iterator
*/
Iterator iterator(String pattern);
/**
* Returns element iterator that can be shared across multiple applications.
* Creating multiple iterators on the same object with this method will result in a single shared iterator.
* See {@linkplain RSet#distributedIterator(String, String, int)} for creating different iterators.
* @param count batch size
* @return shared elements iterator
*/
Iterator distributedIterator(int count);
/**
* Returns iterator over elements that match specified pattern. Iterator can be shared across multiple applications.
* Creating multiple iterators on the same object with this method will result in a single shared iterator.
* See {@linkplain RSet#distributedIterator(String, String, int)} for creating different iterators.
* @param pattern element pattern
* @return shared elements iterator
*/
Iterator distributedIterator(String pattern);
/**
* Returns iterator over elements that match specified pattern. Iterator can be shared across multiple applications.
* Creating multiple iterators on the same object with this method will result in a single shared iterator.
* Iterator name must be resolved to the same hash slot as set name.
* @param pattern element pattern
* @param count batch size
* @param iteratorName redis object name to which cursor will be saved
* @return shared elements iterator
*/
Iterator distributedIterator(String iteratorName, String pattern, int count);
/**
* Returns RMapReduce object associated with this object
*
* @param output key
* @param output value
* @return MapReduce instance
*/
RCollectionMapReduce mapReduce();
/**
* Removes and returns random elements limited by amount
*
* @param amount of random elements
* @return random elements
*/
Set removeRandom(int amount);
/**
* Removes and returns random element
*
* @return random element
*/
V removeRandom();
/**
* Returns random element
*
* @return random element
*/
V random();
/**
* Returns random elements from set limited by count
*
* @param count - values amount to return
* @return random elements
*/
Set random(int count);
/**
* Move a member from this set to the given destination set in.
*
* @param destination the destination set
* @param member the member to move
* @return true if the element is moved, false if the element is not a
* member of this set or no operation was performed
*/
boolean move(String destination, V member);
/**
* Read all elements at once
*
* @return values
*/
Set readAll();
/**
* Union sets specified by name and write to current set.
* If current set already exists, it is overwritten.
*
* @param names - name of sets
* @return size of union
*/
int union(String... names);
/**
* Union sets specified by name with current set
* without current set state change.
*
* @param names - name of sets
* @return values
*/
Set readUnion(String... names);
/**
* Diff sets specified by name and write to current set.
* If current set already exists, it is overwritten.
*
* @param names - name of sets
* @return values
*/
int diff(String... names);
/**
* Diff sets specified by name with current set.
* Without current set state change.
*
* @param names - name of sets
* @return values
*/
Set readDiff(String... names);
/**
* Intersection sets specified by name and write to current set.
* If current set already exists, it is overwritten.
*
* @param names - name of sets
* @return size of intersection
*/
int intersection(String... names);
/**
* Intersection sets specified by name with current set
* without current set state change.
*
* @param names - name of sets
* @return values
*/
Set readIntersection(String... names);
/**
* Counts elements of set as a result of sets intersection with current set.
*
* Requires Redis 7.0.0 and higher.
*
* @param names - name of sets
* @return amount of elements
*/
Integer countIntersection(String... names);
/**
* Counts elements of set as a result of sets intersection with current set.
*
* Requires Redis 7.0.0 and higher.
*
* @param names - name of sets
* @param limit - sets intersection limit
* @return amount of elements
*/
Integer countIntersection(int limit, String... names);
/**
* Tries to add elements only if none of them in set.
*
* @param values - values to add
* @return true if elements successfully added,
* otherwise false.
*/
boolean tryAdd(V... values);
/**
* Check if each element is contained in the specified collection.
* Returns contained elements.
*
* Requires Redis 6.2.0 and higher.
*
* @param c - collection to check
* @return contained elements
*/
List containsEach(Collection c);
/**
* Adds object event listener
*
* @see org.redisson.api.listener.TrackingListener
* @see org.redisson.api.listener.SetAddListener
* @see org.redisson.api.listener.SetRemoveListener
* @see org.redisson.api.listener.SetRemoveRandomListener
* @see org.redisson.api.ExpiredObjectListener
* @see org.redisson.api.DeletedObjectListener
*
* @param listener - object event listener
* @return listener id
*/
int addListener(ObjectListener listener);
}
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