org.apache.lucene.util.cache
Class SimpleMapCache<K,V>

java.lang.Object
  org.apache.lucene.util.cache.Cache<K,V>
      org.apache.lucene.util.cache.SimpleMapCache<K,V>

All Implemented Interfaces:

Closeable

Direct Known Subclasses:

SimpleLRUCache

public class SimpleMapCache<K,V>
extends Cache<K,V>

Simple cache implementation that uses a HashMap to store (key, value) pairs. This cache is not synchronized, use Cache.synchronizedCache(Cache) if needed.

Field Summary

protected Map<K,V>

map

Constructor Summary

SimpleMapCache()

SimpleMapCache(Map<K,V> map)

Method Summary

void	close() Closes the cache.
boolean	containsKey(Object key) Returns whether the given key is in this cache.
V	get(Object key) Returns the value for the given key.
Set<K>	keySet() Returns a Set containing all keys in this cache.
void	put(K key, V value) Puts a (key, value)-pair into the cache.

Methods inherited from class org.apache.lucene.util.cache.Cache

synchronizedCache

Methods inherited from class java.lang.Object

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

Field Detail

map

protected Map<K,V> map

Constructor Detail

SimpleMapCache

public SimpleMapCache()

SimpleMapCache

public SimpleMapCache(Map<K,V> map)

Method Detail

get

public V get(Object key)

Description copied from class: Cache

Returns the value for the given key.

Specified by:

get in class Cache<K,V>

put

public void put(K key,
                V value)

Description copied from class: Cache

Puts a (key, value)-pair into the cache.

Specified by:

put in class Cache<K,V>

close

public void close()

Description copied from class: Cache

Closes the cache.

Specified by:

close in interface Closeable

Specified by:

close in class Cache<K,V>

containsKey

public boolean containsKey(Object key)

Description copied from class: Cache

Returns whether the given key is in this cache.

Specified by:

containsKey in class Cache<K,V>

keySet

public Set<K> keySet()

Returns a Set containing all keys in this cache.