com.hazelcast.internal.util

Class Memoizer<K,V>

java.lang.Object

com.hazelcast.internal.util.Memoizer<K,V>

Type Parameters:

K - key type

V - value type

public class Memoizer<K,V>
extends Object

Thread safe cache for memoizing the calculation for a specific key.

Field Summary

Fields

Modifier and Type	Field and Description
static Object	NULL_OBJECT Null object to be kept as values which are null

Constructor Summary

Constructors

Constructor and Description
Memoizer(ConstructorFunction<K,V> calculationFunction) Constructs the memoizer.

Method Summary

Modifier and Type	Method and Description
V	getOrCalculate(K key) Returns the value for the key, calculating it in the process if necessary.
void	remove(K key) Removes the entry associated with the given key

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NULL_OBJECT

public static final Object NULL_OBJECT

Null object to be kept as values which are null

Constructor Detail

Memoizer

public Memoizer(ConstructorFunction<K,V> calculationFunction)

Constructs the memoizer.

Parameters:

calculationFunction - the function for retrieving the value for a specific key

Method Detail

getOrCalculate

public V getOrCalculate(K key)

Returns the value for the key, calculating it in the process if necessary.

remove

public void remove(K key)

Removes the entry associated with the given key