Package org.codehaus.groovy.runtime.memoize

Class ConcurrentSoftCache<K,V>

java.lang.Object

org.codehaus.groovy.runtime.memoize.ConcurrentCommonCache<K,SoftReference<V>>

org.codehaus.groovy.runtime.memoize.ConcurrentSoftCache<K,V>

Type Parameters:

K - key type

V - real value type

All Implemented Interfaces:

Serializable, Map<K,SoftReference<V>>, EvictableCache<K,SoftReference<V>>, MemoizeCache<K,SoftReference<V>>, ValueConvertable<SoftReference<V>,Object>

public class ConcurrentSoftCache<K,V>
extends ConcurrentCommonCache<K,SoftReference<V>>

Represents concurrent cache holding SoftReference instance as value

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.codehaus.groovy.runtime.memoize.ConcurrentCommonCache

ConcurrentCommonCache.Action<K,V,R>

Nested classes/interfaces inherited from interface org.codehaus.groovy.runtime.memoize.EvictableCache

EvictableCache.EvictionStrategy

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Nested classes/interfaces inherited from interface org.codehaus.groovy.runtime.memoize.MemoizeCache

MemoizeCache.ValueProvider<K,V>

Constructor Summary

Constructors

Constructor	Description
ConcurrentSoftCache()	Constructs a cache with unlimited size
ConcurrentSoftCache(int maxSize)	Constructs a LRU cache with the default initial capacity(16)
ConcurrentSoftCache(int initialCapacity, int maxSize)	Constructs a LRU cache with the specified initial capacity and max size.
ConcurrentSoftCache(int initialCapacity, int maxSize, EvictableCache.EvictionStrategy evictionStrategy)	Constructs a cache with limited size
ConcurrentSoftCache(Map<K,SoftReference<V>> map)	Constructs a cache backed by the specified Map instance

Method Summary

Modifier and Type	Method	Description
Object	convertValue(SoftReference<V> value)	convert the original value to the target value

Methods inherited from class org.codehaus.groovy.runtime.memoize.ConcurrentCommonCache

cleanUpNullReferences, clear, clearAll, containsKey, containsValue, entrySet, get, getAndPut, getAndPut, isEmpty, keys, keySet, put, putAll, remove, size, values

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Detail

ConcurrentSoftCache

public ConcurrentSoftCache()

Constructs a cache with unlimited size

ConcurrentSoftCache

public ConcurrentSoftCache(int initialCapacity,
                           int maxSize,
                           EvictableCache.EvictionStrategy evictionStrategy)

Constructs a cache with limited size

Parameters:

initialCapacity - initial capacity of the cache

maxSize - max size of the cache

evictionStrategy - LRU or FIFO, see EvictableCache.EvictionStrategy

ConcurrentSoftCache

public ConcurrentSoftCache(int initialCapacity,
                           int maxSize)

Constructs a LRU cache with the specified initial capacity and max size. The LRU cache is slower than LRUCache

Parameters:

initialCapacity - initial capacity of the LRU cache

maxSize - max size of the LRU cache

ConcurrentSoftCache

public ConcurrentSoftCache(int maxSize)

Constructs a LRU cache with the default initial capacity(16)

Parameters:

maxSize - max size of the LRU cache

See Also:

ConcurrentSoftCache(int, int)

ConcurrentSoftCache

public ConcurrentSoftCache(Map<K,SoftReference<V>> map)

Constructs a cache backed by the specified Map instance

Parameters:

map - the Map instance

Method Detail

convertValue

public Object convertValue(SoftReference<V> value)

convert the original value to the target value

Specified by:

convertValue in interface ValueConvertable<K,V>

Overrides:

convertValue in class ConcurrentCommonCache<K,SoftReference<V>>

Parameters:

value - the original value

Returns:

the converted value