Class UnlimitedConcurrentCache<K,V>
- java.lang.Object
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- org.codehaus.groovy.runtime.memoize.UnlimitedConcurrentCache<K,V>
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- All Implemented Interfaces:
Serializable,Map<K,V>,EvictableCache<K,V>,MemoizeCache<K,V>
@ThreadSafe public final class UnlimitedConcurrentCache<K,V> extends Object implements EvictableCache<K,V>, Serializable
A cache backed by a ConcurrentHashMap- See Also:
- Serialized Form
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Nested Class Summary
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Nested classes/interfaces inherited from interface org.codehaus.groovy.runtime.memoize.EvictableCache
EvictableCache.Action<K,V,R>, EvictableCache.EvictionStrategy
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Nested classes/interfaces inherited from interface java.util.Map
Map.Entry<K extends Object,V extends Object>
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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 UnlimitedConcurrentCache()Constructs a cache with unlimited sizeUnlimitedConcurrentCache(int initialCapacity)Constructs a cache with unlimited size and set its initial capacityUnlimitedConcurrentCache(Map<? extends K,? extends V> m)Constructs a cache and initialize the cache with the specified map
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description voidcleanUpNullReferences()Replying on the ConcurrentHashMap thread-safe iteration implementation the method will remove all entries holding SoftReferences to gc-evicted objects.Map<K,V>clearAll()Clear the cachebooleancontainsKey(Object key)Determines if the cache contains an entry for the specified key.booleancontainsValue(Object value)Set<Map.Entry<K,V>>entrySet()Vget(Object key)Gets a value from the cacheVgetAndPut(K key, MemoizeCache.ValueProvider<? super K,? extends V> valueProvider)Try to get the value from cache.booleanisEmpty()Set<K>keys()Get all keys associated to cached valuesSet<K>keySet()Vput(K key, V value)Associates the specified value with the specified key in the cache.voidputAll(Map<? extends K,? extends V> m)Vremove(Object key)Remove the cached value by the keyintsize()Get the size of the cacheCollection<V>values()Get all cached values-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.codehaus.groovy.runtime.memoize.EvictableCache
clear
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Methods inherited from interface java.util.Map
compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll
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Constructor Detail
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UnlimitedConcurrentCache
public UnlimitedConcurrentCache()
Constructs a cache with unlimited size
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UnlimitedConcurrentCache
public UnlimitedConcurrentCache(int initialCapacity)
Constructs a cache with unlimited size and set its initial capacity- Parameters:
initialCapacity- the initial capacity
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Method Detail
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clearAll
public Map<K,V> clearAll()
Clear the cache- Specified by:
clearAllin interfaceEvictableCache<K,V>- Returns:
- returns the content of the cleared map
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values
public Collection<V> values()
Get all cached values
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keys
public Set<K> keys()
Get all keys associated to cached values- Specified by:
keysin interfaceEvictableCache<K,V>- Returns:
- all keys
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containsKey
public boolean containsKey(Object key)
Determines if the cache contains an entry for the specified key.- Specified by:
containsKeyin interfaceEvictableCache<K,V>- Specified by:
containsKeyin interfaceMap<K,V>- Parameters:
key- key whose presence in this cache is to be tested.- Returns:
- true if the cache contains a mapping for the specified key
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containsValue
public boolean containsValue(Object value)
- Specified by:
containsValuein interfaceMap<K,V>
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size
public int size()
Get the size of the cache
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put
public V put(K key, V value)
Associates the specified value with the specified key in the cache.
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getAndPut
public V getAndPut(K key, MemoizeCache.ValueProvider<? super K,? extends V> valueProvider)
Try to get the value from cache. If not found, create the value byMemoizeCache.ValueProviderand put it into the cache, at last return the value.- Specified by:
getAndPutin interfaceMemoizeCache<K,V>- Parameters:
key-valueProvider- provide the value if the associated value not found- Returns:
- the cached value
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cleanUpNullReferences
public void cleanUpNullReferences()
Replying on the ConcurrentHashMap thread-safe iteration implementation the method will remove all entries holding SoftReferences to gc-evicted objects.- Specified by:
cleanUpNullReferencesin interfaceMemoizeCache<K,V>
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