Class CaffeinatedGuavaLoadingCache.BulkLoader<K,V>

java.lang.Object

com.github.benmanes.caffeine.guava.CaffeinatedGuavaLoadingCache.SingleLoader<K,V>

com.github.benmanes.caffeine.guava.CaffeinatedGuavaLoadingCache.BulkLoader<K,V>

All Implemented Interfaces:

AsyncCacheLoader<K,V>, CacheLoader<K,V>, Serializable

Enclosing class:

CaffeinatedGuavaLoadingCache<K,V>

static final class CaffeinatedGuavaLoadingCache.BulkLoader<K,V>
extends CaffeinatedGuavaLoadingCache.SingleLoader<K,V>

Field Summary

Fields

Modifier and Type	Field	Description
private static final long	serialVersionUID

Fields inherited from class CaffeinatedGuavaLoadingCache.SingleLoader

cacheLoader

Constructor Summary

Constructors

Constructor	Description
BulkLoader(com.google.common.cache.CacheLoader<K,V> cacheLoader)

Method Summary

Modifier and Type	Method	Description
Map<K,V>	loadAll(Iterable<? extends K> keys)	Computes or retrieves the values corresponding to keys.

Methods inherited from class CaffeinatedGuavaLoadingCache.SingleLoader

load, reload

Methods inherited from class Object

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

Methods inherited from interface CacheLoader

asyncLoad, asyncLoadAll, asyncReload

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

Constructor Details

BulkLoader

BulkLoader(com.google.common.cache.CacheLoader<K,V> cacheLoader)

Method Details

loadAll

public Map<K,V> loadAll(Iterable<? extends K> keys)

Description copied from interface: CacheLoader

Computes or retrieves the values corresponding to keys. This method is called by LoadingCache.getAll(Iterable).

If the returned map doesn't contain all requested keys then the entries it does contain will be cached and getAll will return the partial results. If the returned map contains extra keys not present in keys then all returned entries will be cached, but only the entries for keys will be returned from getAll.

This method should be overridden when bulk retrieval is significantly more efficient than many individual lookups. Note that LoadingCache.getAll(Iterable) will defer to individual calls to LoadingCache.get(K) if this method is not overridden.

Warning: loading must not attempt to update any mappings of this cache directly.

Parameters:

keys - the unique, non-null keys whose values should be loaded

Returns:

a map from each key in keys to the value associated with that key; may not contain null values