com.hp.util.cache

Class SmallDataCache<K,V>

java.lang.Object

com.hp.util.cache.SmallDataCache<K,V>

Type Parameters:

K - type of the key to identify a cached value.

V - type of the cached value.

All Implemented Interfaces:

Cache<K,V>

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

Cache to hold the entire data from the model. Data is never deleted unless Cache.invalidate(Object) or Cache.clear() is called.

Constructor Summary

Constructors

Constructor and Description
SmallDataCache() Creates a new Cache.

Method Summary

Methods

Modifier and Type	Method and Description
void	clear() Clears the cache.
V	get(K key) Gets a value from the cache.
Collection<V>	getContent() Gets the cache's content.
void	invalidate(K key) Invalidates a key.
void	put(K key, V value) Puts a value into the cache.

Methods inherited from class java.lang.Object

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

Constructor Detail

SmallDataCache

public SmallDataCache()

Creates a new Cache.

Method Detail

put

public void put(K key,
       V value)

Description copied from interface: Cache

Puts a value into the cache.

Specified by:

put in interface Cache<K,V>

Parameters:

key - key.

value - value.

get

public V get(K key)

Description copied from interface: Cache

Gets a value from the cache.

Specified by:

get in interface Cache<K,V>

Parameters:

key - value's key.

Returns:

the value associated to the given key if it exists in the cache, null otherwise.

invalidate

public void invalidate(K key)

Description copied from interface: Cache

Invalidates a key. This will cause the key to be removed from the cache. This method should be called when the object associated to the given key is no longer valid (A new copy should be retrieved from the model in the next read or the object no longer exists in the model). Deletion of entries from the cache due space management should be handled by the cache's implementation.

Specified by:

invalidate in interface Cache<K,V>

Parameters:

key - key to invalidate.

clear

public void clear()

Description copied from interface: Cache

Clears the cache.

Specified by:

clear in interface Cache<K,V>

getContent

public Collection<V> getContent()

Gets the cache's content.

Returns:

the cache's content.