Package org.redisson.api

Interface RMultimapAsync<K,V>

Type Parameters:

K - key

V - value

All Superinterfaces:

RExpirableAsync, RObjectAsync

All Known Subinterfaces:

RListMultimap<K,V>, RListMultimapCache<K,V>, RMultimap<K,V>, RMultimapCache<K,V>, RMultimapCacheAsync<K,V>, RSetMultimap<K,V>, RSetMultimapCache<K,V>

All Known Implementing Classes:

RedissonListMultimap, RedissonListMultimapCache, RedissonMultimap, RedissonSetMultimap, RedissonSetMultimapCache

public interface RMultimapAsync<K,V>
extends RExpirableAsync

Base asynchronous MultiMap interface. A collection that maps multiple values per one key.

Author:

Nikita Koksharov

Method Summary

Modifier and Type	Method	Description
RFuture<Boolean>	containsEntryAsync(Object key, Object value)	Returns true if this multimap contains at least one key-value pair with the key key and the value value.
RFuture<Boolean>	containsKeyAsync(Object key)	Returns true if this multimap contains at least one key-value pair with the key key.
RFuture<Boolean>	containsValueAsync(Object value)	Returns true if this multimap contains at least one key-value pair with the value value.
RFuture<Long>	fastRemoveAsync(K... keys)	Removes keys from map by one operation Works faster than RMultimap.remove but not returning the value associated with key
RFuture<Collection<V>>	getAllAsync(K key)
RFuture<Integer>	keySizeAsync()	Returns the number of key-value pairs in this multimap.
RFuture<Boolean>	putAllAsync(K key, Iterable<? extends V> values)	Stores a key-value pair in this multimap for each of values, all using the same key, key.
RFuture<Boolean>	putAsync(K key, V value)	Stores a key-value pair in this multimap.
RFuture<Set<K>>	readAllKeySetAsync()	Read all keys at once
RFuture<Collection<V>>	removeAllAsync(Object key)	Removes all values associated with the key key.
RFuture<Boolean>	removeAsync(Object key, Object value)	Removes a single key-value pair with the key key and the value value from this multimap, if such exists.
RFuture<Collection<V>>	replaceValuesAsync(K key, Iterable<? extends V> values)	Stores a collection of values with the same key, replacing any existing values for that key.
RFuture<Integer>	sizeAsync()	Returns the number of key-value pairs in this multimap.

Methods inherited from interface org.redisson.api.RExpirableAsync

clearExpireAsync, expireAsync, expireAtAsync, expireAtAsync, remainTimeToLiveAsync

Methods inherited from interface org.redisson.api.RObjectAsync

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

Method Detail

sizeAsync

RFuture<Integer> sizeAsync()

Returns the number of key-value pairs in this multimap.

Returns:

size of multimap

containsKeyAsync

RFuture<Boolean> containsKeyAsync(Object key)

Returns true if this multimap contains at least one key-value pair with the key key.

Parameters:

key - - map key

Returns:

true if contains a key

containsValueAsync

RFuture<Boolean> containsValueAsync(Object value)

Returns true if this multimap contains at least one key-value pair with the value value.

Parameters:

value - - map value

Returns:

true if contains a value

containsEntryAsync

RFuture<Boolean> containsEntryAsync(Object key,
                                    Object value)

Returns true if this multimap contains at least one key-value pair with the key key and the value value.

Parameters:

key - - map key

value - - map value

Returns:

true if contains an entry

putAsync

RFuture<Boolean> putAsync(K key,
                          V value)

Stores a key-value pair in this multimap.

Some multimap implementations allow duplicate key-value pairs, in which case put always adds a new key-value pair and increases the multimap size by 1. Other implementations prohibit duplicates, and storing a key-value pair that's already in the multimap has no effect.

Parameters:

key - - map key

value - - map value

Returns:

true if the method increased the size of the multimap, or false if the multimap already contained the key-value pair and doesn't allow duplicates

removeAsync

RFuture<Boolean> removeAsync(Object key,
                             Object value)

Removes a single key-value pair with the key key and the value value from this multimap, if such exists. If multiple key-value pairs in the multimap fit this description, which one is removed is unspecified.

Parameters:

key - - map key

value - - map value

Returns:

true if the multimap changed

putAllAsync

RFuture<Boolean> putAllAsync(K key,
                             Iterable<? extends V> values)

Stores a key-value pair in this multimap for each of values, all using the same key, key. Equivalent to (but expected to be more efficient than):

   

   for (V value : values) {
     put(key, value);
   }

In particular, this is a no-op if values is empty.

Parameters:

key - - map key

values - - map values

Returns:

true if the multimap changed

replaceValuesAsync

RFuture<Collection<V>> replaceValuesAsync(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 removeAllAsync(Object).

Parameters:

key - - map key

values - - map values

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.

removeAllAsync

RFuture<Collection<V>> removeAllAsync(Object key)

Removes all values associated with the key key.

Once this method returns, key will not be mapped to any values.

Parameters:

key - - map key

Returns:

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

getAllAsync

RFuture<Collection<V>> getAllAsync(K key)

keySizeAsync

RFuture<Integer> keySizeAsync()

Returns the number of key-value pairs in this multimap.

Returns:

keys amount

fastRemoveAsync

RFuture<Long> fastRemoveAsync(K... keys)

Removes keys from map by one operation Works faster than RMultimap.remove but not returning the value associated with key

Parameters:

keys - - map keys

Returns:

the number of keys that were removed from the hash, not including specified but non existing keys

readAllKeySetAsync

RFuture<Set<K>> readAllKeySetAsync()

Read all keys at once

Returns:

keys