[Java] Interface MemoizeCache<K, V>

public interface MemoizeCache<K, V>

Method Detail

public void cleanUpNullReferences()

Invoked when some of the held SoftReferences have been evicted by the garbage collector and so should be removed from the cache. The implementation must ensure that concurrent invocations of all methods on the cache may occur from other threads and thus should protect any shared resources.

public V get(K key)

Gets a value from the cache

Parameters:

key - the key whose associated value is to be returned

Returns:

the value, or null, if it does not exist.

public V getAndPut(K key, ValueProvider<? super K, ? extends V> valueProvider)

Try to get the value from cache. If not found, create the value by ValueProvider and put it into the cache, at last return the value.

Parameters:

key

valueProvider - provide the value if the associated value not found

Returns:

the cached value

public V put(K key, V value)

Associates the specified value with the specified key in the cache.

Parameters:

key - key with which the specified value is to be associated

value - value to be associated with the specified key

Returns:

null, or the old value if the key associated with the specified key.