com.centit.support.common

Class DerivativeCachedMap<K,D,T>

java.lang.Object

com.centit.support.common.AbstractCachedObject<Map<K,T>>

com.centit.support.common.DerivativeCachedMap<K,D,T>

Type Parameters:

K - id 键值类型

T - target 缓存对象的类型

All Implemented Interfaces:

ICachedObject<Map<K,T>>

public class DerivativeCachedMap<K,D,T>
extends AbstractCachedObject<Map<K,T>>

用 ConcurrentHashMap 缓存对象，每个对象 自己维护缓存策略

Field Summary

Fields inherited from class com.centit.support.common.AbstractCachedObject

target

Fields inherited from interface com.centit.support.common.ICachedObject

DEFAULT_REFRESH_PERIOD, KEEP_FRESH_PERIOD, NOT_REFRESH_PERIOD

Constructor Summary

Constructors

Constructor and Description
DerivativeCachedMap(Function<D,T> refresher, CachedMap<K,D> parentCache)
DerivativeCachedMap(Function<D,T> refresher, CachedMap<K,D> parentCache, int initialCapacity) 构造函数

Method Summary

Modifier and Type	Method and Description
void	evictCache()
void	evictIdentifiedCache(K key)
Map<K,T>	getCachedTarget()
T	getCachedValue(K key)
Map<K,T>	getRawTarget()
void	setFreshPeriod(long freshPeriod)
void	setRefresher(Function<D,T> refresher)

Methods inherited from class com.centit.support.common.AbstractCachedObject

addDeriveCache

Methods inherited from class java.lang.Object

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

Constructor Detail

DerivativeCachedMap

public DerivativeCachedMap(Function<D,T> refresher,
                           CachedMap<K,D> parentCache,
                           int initialCapacity)

构造函数

Parameters:

refresher - 重新获取代码的接口

parentCache - 保鲜时间，单位为秒；也是重新刷新时间 它的意思不是每隔一段时间就刷新，而是在获取数据是检查是否超时，如果超时则刷新

initialCapacity - The implementation performs internal sizing to accommodate this many elements.

DerivativeCachedMap

public DerivativeCachedMap(Function<D,T> refresher,
                           CachedMap<K,D> parentCache)

Method Detail

setRefresher

public void setRefresher(Function<D,T> refresher)

setFreshPeriod

public void setFreshPeriod(long freshPeriod)

evictIdentifiedCache

public void evictIdentifiedCache(K key)

evictCache

public void evictCache()

Specified by:

evictCache in interface ICachedObject<Map<K,T>>

Overrides:

evictCache in class AbstractCachedObject<Map<K,T>>

getCachedValue

public T getCachedValue(K key)

getCachedTarget

public Map<K,T> getCachedTarget()

Specified by:

getCachedTarget in class AbstractCachedObject<Map<K,T>>

getRawTarget

public Map<K,T> getRawTarget()