org.apache.flink.runtime.util

Class DefaultGroupCache<G,K,V>

java.lang.Object

org.apache.flink.runtime.util.DefaultGroupCache<G,K,V>

All Implemented Interfaces:

GroupCache<G,K,V>

@NotThreadSafe
public class DefaultGroupCache<G,K,V>
extends Object
implements GroupCache<G,K,V>

Default implement of GroupCache. Entries will be expired after timeout.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DefaultGroupCache.Factory<G,K,V> The Factory of DefaultGroupCache.

Method Summary

Modifier and Type	Method and Description
void	clear() clear all cache.
void	clearCacheForGroup(G group) Clear all caches of the corresponding group.
V	get(G group, K key) Get value in cache.
void	put(G group, K key, V value) Put group, key and value to cache.

Methods inherited from class java.lang.Object

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

Method Detail

clear

public void clear()

Description copied from interface: GroupCache

clear all cache.

Specified by:

clear in interface GroupCache<G,K,V>

get

public V get(G group,
             K key)

Description copied from interface: GroupCache

Get value in cache.

Specified by:

get in interface GroupCache<G,K,V>

Returns:

value in cache if exists, otherwise null

put

public void put(G group,
                K key,
                V value)

Description copied from interface: GroupCache

Put group, key and value to cache.

Specified by:

put in interface GroupCache<G,K,V>

clearCacheForGroup

public void clearCacheForGroup(G group)

Description copied from interface: GroupCache

Clear all caches of the corresponding group.

Specified by:

clearCacheForGroup in interface GroupCache<G,K,V>