org.apache.iotdb.tsfile.common.cache

Class LRUCache<K,T>

java.lang.Object

org.apache.iotdb.tsfile.common.cache.LRUCache<K,T>

All Implemented Interfaces:

Cache<K,T>

public abstract class LRUCache<K,T>
extends Object
implements Cache<K,T>

This class is not thread safe.

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<K,T>	cache

Constructor Summary

Constructors

Constructor and Description
LRUCache(int cacheSize)

Method Summary

Modifier and Type	Method and Description
void	clear()
T	get(K key)
protected abstract T	loadObjectByKey(K key)
void	put(K key, T value)
void	removeItem(K key)

Methods inherited from class java.lang.Object

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

Field Detail

cache

protected Map<K,T> cache

Constructor Detail

LRUCache

public LRUCache(int cacheSize)

Method Detail

get

public T get(K key)
      throws IOException

Specified by:

get in interface Cache<K,T>

Throws:

IOException

clear

public void clear()

Specified by:

clear in interface Cache<K,T>

put

public void put(K key,
                T value)

loadObjectByKey

protected abstract T loadObjectByKey(K key)
                              throws IOException

Throws:

IOException

removeItem

public void removeItem(K key)