net.oschina.j2cache.ehcache

类 EhCache

java.lang.Object

net.oschina.j2cache.ehcache.EhCache

所有已实现的接口:

Cloneable, Cache, Level1Cache, net.sf.ehcache.event.CacheEventListener

public class EhCache
extends Object
implements Level1Cache, net.sf.ehcache.event.CacheEventListener

EHCache 2.x 的缓存封装

该封装类实现了缓存操作以及对缓存数据失效的侦听

作者:

Winter Lau(javayou@gmail.com)

构造器概要

构造器

构造器和说明
EhCache(net.sf.ehcache.Cache cache, CacheExpiredListener listener) Creates a new EhCache instance

方法概要

限定符和类型	方法和说明
void	clear() Remove all elements in the cache, but leave the cache in a useable state.
Object	clone()
void	dispose()
void	evict(String... keys) Removes the element which matches the key If no element matches, nothing is removed and no Exception is thrown.
boolean	exists(String key) 判断缓存是否存在
Map<String,Object>	get(Collection<String> keys) 批量获取缓存对象
Serializable	get(String key) Gets a value of an element which matches the given key.
Collection<String>	keys() Return all keys
void	notifyElementEvicted(net.sf.ehcache.Ehcache cache, net.sf.ehcache.Element elem)
void	notifyElementExpired(net.sf.ehcache.Ehcache cache, net.sf.ehcache.Element elem)
void	notifyElementPut(net.sf.ehcache.Ehcache cache, net.sf.ehcache.Element elem)
void	notifyElementRemoved(net.sf.ehcache.Ehcache cache, net.sf.ehcache.Element elem)
void	notifyElementUpdated(net.sf.ehcache.Ehcache cache, net.sf.ehcache.Element elem)
void	notifyRemoveAll(net.sf.ehcache.Ehcache cache)
void	put(Map<String,Object> elements) 批量插入数据
void	put(String key, Object value) Puts an object into the cache.
long	size() 返回该缓存区域中，内存存储对象的最大数量
long	ttl() 返回该缓存区域的 TTL 设置（单位：秒）

从类继承的方法 java.lang.Object

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

构造器详细资料

EhCache

public EhCache(net.sf.ehcache.Cache cache,
               CacheExpiredListener listener)

Creates a new EhCache instance

参数:

cache - The underlying EhCache instance to use.

listener - cache listener

方法详细资料

ttl

public long ttl()

从接口复制的说明: Level1Cache

返回该缓存区域的 TTL 设置（单位：秒）

指定者:

ttl 在接口中 Level1Cache

返回:

true if cache support ttl setting

size

public long size()

从接口复制的说明: Level1Cache

返回该缓存区域中，内存存储对象的最大数量

指定者:

size 在接口中 Level1Cache

返回:

cache size in memory

keys

public Collection<String> keys()

从接口复制的说明: Cache

Return all keys

指定者:

keys 在接口中 Cache

返回:

返回键的集合

get

public Serializable get(String key)

Gets a value of an element which matches the given key.

指定者:

get 在接口中 Cache

参数:

key - the key of the element to return.

返回:

The value placed into the cache with an earlier put, or null if not found or expired

put

public void put(String key,
                Object value)

Puts an object into the cache.

指定者:

put 在接口中 Cache

参数:

key - a key

value - a value

evict

public void evict(String... keys)

Removes the element which matches the key If no element matches, nothing is removed and no Exception is thrown.

指定者:

evict 在接口中 Cache

参数:

keys - the key of the element to remove

get

public Map<String,Object> get(Collection<String> keys)

从接口复制的说明: Cache

批量获取缓存对象

指定者:

get 在接口中 Cache

参数:

keys - cache keys

返回:

return key-value objects

exists

public boolean exists(String key)

从接口复制的说明: Cache

判断缓存是否存在

指定者:

exists 在接口中 Cache

参数:

key - cache key

返回:

true if key exists

put

public void put(Map<String,Object> elements)

从接口复制的说明: Cache

批量插入数据

指定者:

put 在接口中 Cache

参数:

elements - objects to be put in cache

clear

public void clear()

Remove all elements in the cache, but leave the cache in a useable state.

指定者:

clear 在接口中 Cache

clone

public Object clone()
             throws CloneNotSupportedException

指定者:

clone 在接口中 net.sf.ehcache.event.CacheEventListener

覆盖:

clone 在类中 Object

抛出:

CloneNotSupportedException

notifyElementExpired

public void notifyElementExpired(net.sf.ehcache.Ehcache cache,
                                 net.sf.ehcache.Element elem)

指定者:

notifyElementExpired 在接口中 net.sf.ehcache.event.CacheEventListener

notifyElementEvicted

public void notifyElementEvicted(net.sf.ehcache.Ehcache cache,
                                 net.sf.ehcache.Element elem)

指定者:

notifyElementEvicted 在接口中 net.sf.ehcache.event.CacheEventListener

notifyElementPut

public void notifyElementPut(net.sf.ehcache.Ehcache cache,
                             net.sf.ehcache.Element elem)

指定者:

notifyElementPut 在接口中 net.sf.ehcache.event.CacheEventListener

notifyElementRemoved

public void notifyElementRemoved(net.sf.ehcache.Ehcache cache,
                                 net.sf.ehcache.Element elem)

指定者:

notifyElementRemoved 在接口中 net.sf.ehcache.event.CacheEventListener

notifyElementUpdated

public void notifyElementUpdated(net.sf.ehcache.Ehcache cache,
                                 net.sf.ehcache.Element elem)

指定者:

notifyElementUpdated 在接口中 net.sf.ehcache.event.CacheEventListener

notifyRemoveAll

public void notifyRemoveAll(net.sf.ehcache.Ehcache cache)

指定者:

notifyRemoveAll 在接口中 net.sf.ehcache.event.CacheEventListener

dispose

public void dispose()

指定者:

dispose 在接口中 net.sf.ehcache.event.CacheEventListener