com.jmethods.catatumbo.impl

Class Cache<K,V>

java.lang.Object

com.jmethods.catatumbo.impl.Cache<K,V>

Type Parameters:

K - Type of keys in the cache

V - Type of values in the cache

public class Cache<K,V>
extends Object

A simple cache backed by a ConcurrentHashMap.

Author:

Sai Pullabhotla

Constructor Summary

Constructors

Constructor and Description
Cache() Creates a new instance of Cache.
Cache(int initialSize) Creates a new instance of Cache.
Cache(int initialSize, float loadFactor) Creates a new instance of Cache.

Method Summary

Modifier and Type	Method and Description
boolean	containsKey(K key) Checks if the give key is in this cache.
V	get(K key) Returns the cached value for the given key.
V	put(K key, V value) Puts the given entry into this cache.
int	size() Returns the size of this cache.

Methods inherited from class java.lang.Object

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

Constructor Detail

Cache

public Cache()

Creates a new instance of Cache.

Cache

public Cache(int initialSize)

Creates a new instance of Cache.

Parameters:

initialSize - initial size

Cache

public Cache(int initialSize,
             float loadFactor)

Creates a new instance of Cache.

Parameters:

initialSize - initial size

loadFactor - load factor

Method Detail

get

public V get(K key)

Returns the cached value for the given key.

Parameters:

key - the key

Returns:

the cached value of the given key. Returns null, if the given key does not exist in this cache.

put

public V put(K key,
             V value)

Puts the given entry into this cache.

Parameters:

key - the key

value - the value

Returns:

previous value, if any, for the given key.

containsKey

public boolean containsKey(K key)

Checks if the give key is in this cache.

Parameters:

key - the key

Returns:

true, if the given key exists in the cache; false, otherwise.

size

public int size()

Returns the size of this cache.

Returns:

the size of this cache.