org.cache2k

Interface KeyValueStore<K,V>

All Superinterfaces:

AdvancedKeyValueSource<K,V>, KeyValueSource<K,V>

All Known Subinterfaces:

Cache<K,V>

All Known Implementing Classes:

AbstractCache, ForwardingCache

public interface KeyValueStore<K,V>
extends AdvancedKeyValueSource<K,V>

Reduced interface for read/write data access.

This interface contains no methods that expose or mutate the cache state. This is intended as a reduced interface that has transparent semantics in cache through operation.

Author:

Jens Wilke

Method Summary

Modifier and Type	Method and Description
void	put(K key, V value) Insert or update a value associated with the given key.
void	putAll(Map<? extends K,? extends V> valueMap) Insert or update all elements of the map into the cache.
void	remove(K key) Remove a value from the cache that is associated with the key.
void	removeAll(Iterable<? extends K> keys) Remove mappings from the cache.

Methods inherited from interface org.cache2k.AdvancedKeyValueSource

getAll, prefetch, prefetchAll

Methods inherited from interface org.cache2k.KeyValueSource

get

Method Detail

put

void put(K key,
         V value)

Insert or update a value associated with the given key.

Parameters:

key - key with which the specified value is associated

value - value to be associated with the specified key

See Also:

Cache.put(Object, Object)

putAll

void putAll(Map<? extends K,? extends V> valueMap)

Insert or update all elements of the map into the cache.

Parameters:

valueMap - Map of keys with associated values to be inserted in the cache

Throws:

NullPointerException - if one of the specified keys is null

remove

void remove(K key)

Remove a value from the cache that is associated with the key.

Rationale: It is intentional that this method does not return a boolean or the previous entry. When operating in cache through configuration (which means CacheWriter CacheLoader is registered) a boolean could mean two different things: the value was present in the cache or the value was present in the system of authority. The purpose of this interface is a reduced set of methods that cannot be misinterpreted.

Parameters:

key - key which mapping is to be removed from the cache, not null

See Also:

Cache.remove(K)

removeAll

void removeAll(Iterable<? extends K> keys)

Remove mappings from the cache.

Parameters:

keys - keys is to be removed from the cache

See Also:

Cache.removeAll(java.lang.Iterable<? extends K>)