com.ibm.cloud.objectstorage.internal

Class FIFOCache<T>

java.lang.Object

com.ibm.cloud.objectstorage.internal.FIFOCache<T>

Type Parameters:

T - value type

@ThreadSafe
public final class FIFOCache<T>
extends Object

A bounded cache that has a FIFO eviction policy when the cache is full.

Constructor Summary

Constructors

Constructor and Description
FIFOCache(int maxSize)

Method Summary

Modifier and Type	Method and Description
T	add(String key, T value) Adds an entry to the cache, evicting the earliest entry if necessary.
T	get(String key) Returns the value of the given key; or null of no such entry exists.
int	getMaxSize() Returns the maximum size of the cache.
int	size() Returns the current size of the cache.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

FIFOCache

public FIFOCache(int maxSize)

Parameters:

maxSize - the maximum number of entries of the cache

Method Detail

add

public T add(String key,
             T value)

Adds an entry to the cache, evicting the earliest entry if necessary.

get

public T get(String key)

Returns the value of the given key; or null of no such entry exists.

size

public int size()

Returns the current size of the cache.

getMaxSize

public int getMaxSize()

Returns the maximum size of the cache.

toString

public String toString()

Overrides:

toString in class Object