com.oracle.bmc.hdfs.caching.internal

Class GuavaCache<K,V>

java.lang.Object

com.oracle.bmc.hdfs.caching.internal.GuavaCache<K,V>

Type Parameters:

K - key type

V - value type

All Implemented Interfaces:

Cache<K,V>

public class GuavaCache<K,V>
extends Object
implements Cache<K,V>

A Guava Cache implementation of Cache.

Nested Class Summary

Nested classes/interfaces inherited from interface com.oracle.bmc.hdfs.caching.Cache

Cache.Loader<KK,VV>, Cache.RemovalListener<KK,VV>, Cache.RemovalNotification<KK,VV>, Cache.Statistics, Cache.UncheckedExecutionException, Cache.Weigher<KK,VV>

Constructor Summary

Constructors

Constructor and Description
GuavaCache(com.google.common.cache.Cache<K,V> guavaCache)

Method Summary

Modifier and Type	Method and Description
ConcurrentMap<K,V>	asMap() Provide a view into the cache as a Map.
void	cleanUp() Run cache clean-up, e.g.
V	getIfPresent(K key) Get the value for the key if it exists in the cache, otherwise return null.
Cache.Statistics	getStatistics() Returns statistics, if enabled.
void	invalidate(K key) Invalidate a single cache entry.
void	invalidateAll() Invalidate all cache entries.
void	put(K key, V value) Put the value for the key into the cache.

Methods inherited from class java.lang.Object

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

Constructor Detail

GuavaCache

@ConstructorProperties(value="guavaCache")
public GuavaCache(com.google.common.cache.Cache<K,V> guavaCache)

Method Detail

invalidateAll

public void invalidateAll()

Description copied from interface: Cache

Invalidate all cache entries.

Specified by:

invalidateAll in interface Cache<K,V>

invalidate

public void invalidate(K key)

Description copied from interface: Cache

Invalidate a single cache entry.

Specified by:

invalidate in interface Cache<K,V>

Parameters:

key - key for the entry to be invalidated

cleanUp

public void cleanUp()

Description copied from interface: Cache

Run cache clean-up, e.g. to enforce sizes.

Specified by:

cleanUp in interface Cache<K,V>

asMap

public ConcurrentMap<K,V> asMap()

Description copied from interface: Cache

Provide a view into the cache as a Map.

Specified by:

asMap in interface Cache<K,V>

Returns:

map

getStatistics

public Cache.Statistics getStatistics()

Description copied from interface: Cache

Returns statistics, if enabled.

Specified by:

getStatistics in interface Cache<K,V>

Returns:

statistics

getIfPresent

public V getIfPresent(K key)

Description copied from interface: Cache

Get the value for the key if it exists in the cache, otherwise return null.

Specified by:

getIfPresent in interface Cache<K,V>

Parameters:

key - key

Returns:

value, or null if it didn't exist in the cache

put

public void put(K key,
                V value)

Description copied from interface: Cache

Put the value for the key into the cache.

Specified by:

put in interface Cache<K,V>

Parameters:

key - key

value - value