Interface MemoizeCache<K,​V>

    • Method Detail

      • put

        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.
      • get

        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.
      • getAndPut

        default V getAndPut​(K key,
                            MemoizeCache.ValueProvider<? super K,​? extends V> valueProvider)
        Try to get the value from cache. If not found, create the value by MemoizeCache.ValueProvider and put it into the cache, at last return the value.
        Parameters:
        key - the key to look up
        valueProvider - provide the value if the associated value not found
        Returns:
        the cached value
      • cleanUpNullReferences

        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.