stamp.util
Class Cache

java.lang.Object
  |
  +--stamp.util.List
        |
        +--stamp.util.Pool
              |
              +--stamp.util.Cache

public class Cache

extends Pool

A cache is a special type of pool. When an attempt is made to check out a new object when all objects are in use, the 'oldest' object is returned.

A least recently used algorithm is used to determine the oldest object.

Caution: the LRU algorithm doesn't wrap around correctly.

Field Summary

protected int[]	age
protected int	globalAge

Fields inherited from class stamp.util.Pool

objectUsed

Fields inherited from class stamp.util.List

list, numObjects

Constructor Summary

Cache(int maxSize)
Creates a new cache with the specified number of entries.

Method Summary

Object

checkOut() Check an object out of the pool.

Methods inherited from class stamp.util.Pool

checkIn

Methods inherited from class stamp.util.List

add, add, get, size

Methods inherited from class java.lang.Object

equals

Field Detail

age

protected int[] age

globalAge

protected int globalAge

Constructor Detail

Cache

public Cache(int maxSize)

Creates a new cache with the specified number of entries.

Method Detail

checkOut

public Object checkOut()
                throws IndexOutOfBoundsException

Check an object out of the pool.

Overrides:

checkOut in class Pool

Returns:

a free object instantance