org.redisson.core

Interface RSetMultimap<K,V>

Type Parameters:

K - key

V - value

All Superinterfaces:

RExpirable, RExpirableAsync, RMultimap<K,V>, RMultimapAsync<K,V>, RObject, RObjectAsync

All Known Subinterfaces:

RSetMultimapCache<K,V>

All Known Implementing Classes:

RedissonSetMultimap, RedissonSetMultimapCache

public interface RSetMultimap<K,V>
extends RMultimap<K,V>

Set based Multimap. Doesn't allow duplications for values mapped to key.

Author:

Nikita Koksharov

Method Summary

Methods

Modifier and Type	Method and Description
Set<Map.Entry<K,V>>	entries() Returns a view collection of all key-value pairs contained in this multimap, as Map.Entry instances.
Set<V>	get(K key) Returns a view collection of the values associated with key in this multimap, if any.
Set<V>	getAll(K key) Returns all elements at once.
Set<V>	removeAll(Object key) Removes all values associated with the key key.
Set<V>	replaceValues(K key, Iterable<? extends V> values) Stores a collection of values with the same key, replacing any existing values for that key.

Methods inherited from interface org.redisson.core.RMultimap

clear, containsEntry, containsKey, containsValue, fastRemove, isEmpty, keySet, put, putAll, remove, size, values

Methods inherited from interface org.redisson.core.RExpirable

clearExpire, expire, expireAt, expireAt, remainTimeToLive

Methods inherited from interface org.redisson.core.RObject

delete, getName, isExists, migrate, move, rename, renamenx

Methods inherited from interface org.redisson.core.RMultimapAsync

containsEntryAsync, containsKeyAsync, containsValueAsync, fastRemoveAsync, getAllAsync, putAllAsync, putAsync, removeAllAsync, removeAsync, replaceValuesAsync, sizeAsync

Methods inherited from interface org.redisson.core.RExpirableAsync

clearExpireAsync, expireAsync, expireAtAsync, expireAtAsync, remainTimeToLiveAsync

Methods inherited from interface org.redisson.core.RObjectAsync

deleteAsync, isExistsAsync, migrateAsync, moveAsync, renameAsync, renamenxAsync

Method Detail

get

Set<V> get(K key)

Returns a view collection of the values associated with key in this multimap, if any. Note that when containsKey(key) is false, this returns an empty collection, not null.

Changes to the returned collection will update the underlying multimap, and vice versa.

Because a RSetMultiMap has unique values for a given key, this method returns a Set, instead of the Collection specified in the RMultimap interface.

Specified by:

get in interface RMultimap<K,V>

getAll

Set<V> getAll(K key)

Returns all elements at once. Result collection is NOT backed by map, so changes are not reflected in map.

Because a RSetMultiMap has unique values for a given key, this method returns a Set, instead of the Collection specified in the RMultimap interface.

Specified by:

getAll in interface RMultimap<K,V>

Returns:

removeAll

Set<V> removeAll(Object key)

Removes all values associated with the key key.

Once this method returns, key will not be mapped to any values, so it will not appear in RMultimap.keySet(), #asMap(), or any other views.

Use #fastRemove() if values are not needed.

Because a RSetMultiMap has unique values for a given key, this method returns a Set, instead of the Collection specified in the RMultimap interface.

Specified by:

removeAll in interface RMultimap<K,V>

Returns:

the values that were removed (possibly empty). The returned collection may be modifiable, but updating it will have no effect on the multimap.

replaceValues

Set<V> replaceValues(K key,
                   Iterable<? extends V> values)

Stores a collection of values with the same key, replacing any existing values for that key.

If values is empty, this is equivalent to removeAll(key).

Because a RSetMultiMap has unique values for a given key, this method returns a Set, instead of the Collection specified in the RMultimap interface.

Any duplicates in values will be stored in the multimap once.

Specified by:

replaceValues in interface RMultimap<K,V>

Returns:

the collection of replaced values, or an empty collection if no values were previously associated with the key. The collection may be modifiable, but updating it will have no effect on the multimap.

entries

Set<Map.Entry<K,V>> entries()

Returns a view collection of all key-value pairs contained in this multimap, as Map.Entry instances.

Changes to the returned collection or the entries it contains will update the underlying multimap, and vice versa. However, adding to the returned collection is not possible.

Because a RSetMultiMap has unique values for a given key, this method returns a Set, instead of the Collection specified in the RMultimap interface.

Specified by:

entries in interface RMultimap<K,V>