org.apache.oro.util

类 GenericCache

java.lang.Object

org.apache.oro.util.GenericCache

所有已实现的接口:

Serializable, Cache

直接已知子类:

CacheFIFO, CacheFIFO2, CacheLRU, CacheRandom

public abstract class GenericCache
extends Object
implements Cache, Serializable

This is the base class for all cache implementations provided in the org.apache.oro.util package. To derive a subclass from GenericCache only the ... methods need be overridden. Although 4 subclasses of GenericCache are provided with this package, users may not derive subclasses from this class. Rather, users should create their own implmentations of the Cache interface.

从以下版本开始:

1.0

版本:

@version@

另请参阅:

Cache, CacheLRU, CacheFIFO, CacheFIFO2, CacheRandom, 序列化表格

字段概要

字段

限定符和类型	字段和说明
static int	DEFAULT_CAPACITY The default capacity to be used by the GenericCache subclasses provided with this package.

方法概要

限定符和类型	方法和说明
abstract void	addElement(Object key, Object value)
int	capacity() Returns the maximum number of elements that can be cached at one time.
Object	getElement(Object key)
boolean	isFull()
Iterator	keys()
int	size() Returns the number of elements in the cache, not to be confused with the capacity() which returns the number of elements that can be held in the cache at one time.

从类继承的方法 java.lang.Object

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

字段详细资料

DEFAULT_CAPACITY

public static final int DEFAULT_CAPACITY

The default capacity to be used by the GenericCache subclasses provided with this package. Its value is 20.

另请参阅:

常量字段值

方法详细资料

addElement

public abstract void addElement(Object key,
                                Object value)

指定者:

addElement 在接口中 Cache

getElement

public Object getElement(Object key)

指定者:

getElement 在接口中 Cache

keys

public final Iterator keys()

size

public final int size()

Returns the number of elements in the cache, not to be confused with the capacity() which returns the number of elements that can be held in the cache at one time.

指定者:

size 在接口中 Cache

返回:

The current size of the cache (i.e., the number of elements currently cached).

capacity

public final int capacity()

Returns the maximum number of elements that can be cached at one time.

指定者:

capacity 在接口中 Cache

返回:

The maximum number of elements that can be cached at one time.

isFull

public final boolean isFull()