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 Details

    • 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