SoftLimitMRUCache (Hibernate API Documentation) - Hibernate 3.2.3 正式版 API 英文文档

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org.hibernate.util
Class SoftLimitMRUCache

java.lang.Object
  org.hibernate.util.SoftLimitMRUCache

All Implemented Interfaces:: Serializable

public class SoftLimitMRUCache
extends Object
implements Serializable

Cache following a "Most Recently Used" (MRY) algorithm for maintaining a bounded in-memory size; the "Least Recently Used" (LRU) entry is the first available for removal from the cache.

This implementation uses a "soft limit" to the in-memory size of the cache, meaning that all cache entries are kept within a completely SoftReference-based map with the most recently utilized entries additionally kept in a hard-reference manner to prevent those cache entries soft references from becoming enqueued by the garbage collector. Thus the actual size of this cache impl can actually grow beyond the stated max size bound as long as GC is not actively seeking soft references for enqueuement.

Author:: Steve Ebersole
See Also:: Serialized Form

Field Summary

static int DEFAULT_STRONG_REF_COUNT


Constructor Summary

SoftLimitMRUCache()


SoftLimitMRUCache(int strongRefCount)


Method Summary

void clear()


Object get(Object key)


Object put(Object key, Object value)


int size()


int softSize()


Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_STRONG_REF_COUNT

public static final int DEFAULT_STRONG_REF_COUNT

See Also:: Constant Field Values

Constructor Detail