org.apache.oro.util

类 CacheFIFO2

java.lang.Object

org.apache.oro.util.GenericCache

org.apache.oro.util.CacheFIFO2

所有已实现的接口:

Serializable, Cache

public final class CacheFIFO2
extends GenericCache

This class is a GenericCache subclass implementing a second chance FIFO (First In First Out) cache replacement policy. In other words, values are added to the cache until the cache becomes full. Once the cache is full, when a new value is added to the cache, it replaces the first of the current values in the cache to have been added, unless that value has been used recently (generally between the last cache replacement and now). If the value to be replaced has been used, it is given a second chance, and the next value in the cache is tested for replacement in the same manner. If all the values are given a second chance, then the original pattern selected for replacement is replaced.

从以下版本开始:

1.0

版本:

@version@

另请参阅:

GenericCache, 序列化表格

字段概要

从类继承的字段 org.apache.oro.util.GenericCache

DEFAULT_CAPACITY

构造器概要

构造器

构造器和说明
CacheFIFO2() Same as: CacheFIFO2(GenericCache.DEFAULT_CAPACITY);
CacheFIFO2(int capacity) Creates a CacheFIFO2 instance with a given cache capacity.

方法概要

限定符和类型	方法和说明
void	addElement(Object key, Object value) Adds a value to the cache.
Object	getElement(Object key)

从类继承的方法 org.apache.oro.util.GenericCache

capacity, isFull, keys, size

从类继承的方法 java.lang.Object

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

构造器详细资料

CacheFIFO2

public CacheFIFO2(int capacity)

Creates a CacheFIFO2 instance with a given cache capacity.

参数:

capacity - The capacity of the cache.

CacheFIFO2

public CacheFIFO2()

Same as:

 CacheFIFO2(GenericCache.DEFAULT_CAPACITY);
 

方法详细资料

getElement

public Object getElement(Object key)

指定者:

getElement 在接口中 Cache

覆盖:

getElement 在类中 GenericCache

addElement

public final void addElement(Object key,
                             Object value)

Adds a value to the cache. If the cache is full, when a new value is added to the cache, it replaces the first of the current values in the cache to have been added (i.e., FIFO2).

指定者:

addElement 在接口中 Cache

指定者:

addElement 在类中 GenericCache

参数:

key - The key referencing the value added to the cache.

value - The value to add to the cache.