Class LRUCache<K,V>
- java.lang.Object
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- org.codehaus.groovy.runtime.memoize.LRUCache<K,V>
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- All Implemented Interfaces:
MemoizeCache<K,V>
@ThreadSafe public final class LRUCache<K,V> extends java.lang.Object implements MemoizeCache<K,V>
A cache backed by a ConcurrentLinkedHashMap
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Nested Class Summary
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Nested classes/interfaces inherited from interface org.codehaus.groovy.runtime.memoize.MemoizeCache
MemoizeCache.ValueProvider<K,V>
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Constructor Summary
Constructors Constructor Description LRUCache(int maxCacheSize)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description voidcleanUpNullReferences()Remove all entries holding SoftReferences to gc-evicted objects.Vget(K key)Gets a value from the cacheVgetAndPut(K key, MemoizeCache.ValueProvider<? super K,? extends V> valueProvider)The implementation of `getAndPut` is not atomicVput(K key, V value)Associates the specified value with the specified key in the cache.
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Method Detail
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put
public V put(K key, V value)
Description copied from interface:MemoizeCacheAssociates the specified value with the specified key in the cache.- Specified by:
putin interfaceMemoizeCache<K,V>- Parameters:
key- key with which the specified value is to be associatedvalue- value to be associated with the specified key- Returns:
- null, or the old value if the key associated with the specified key.
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get
public V get(K key)
Description copied from interface:MemoizeCacheGets a value from the cache- Specified by:
getin interfaceMemoizeCache<K,V>- Parameters:
key- the key whose associated value is to be returned- Returns:
- the value, or null, if it does not exist.
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getAndPut
public V getAndPut(K key, MemoizeCache.ValueProvider<? super K,? extends V> valueProvider)
The implementation of `getAndPut` is not atomic- Specified by:
getAndPutin interfaceMemoizeCache<K,V>- Returns:
- the cached value
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cleanUpNullReferences
public void cleanUpNullReferences()
Remove all entries holding SoftReferences to gc-evicted objects.- Specified by:
cleanUpNullReferencesin interfaceMemoizeCache<K,V>
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