Class References.WeakKeyReference<K>

java.lang.Object

java.lang.ref.Reference<K>

java.lang.ref.WeakReference<K>

com.github.benmanes.caffeine.cache.References.WeakKeyReference<K>

All Implemented Interfaces:

References.InternalReference<K>

Enclosing class:

References

static class References.WeakKeyReference<K>
extends WeakReference<K>
implements References.InternalReference<K>

The key in a cache that holds keys weakly. This class retains the key's identity hash code in the advent that the key is reclaimed so that the entry can be removed from the cache in constant time.

Field Summary

Fields

Modifier and Type	Field	Description
private final int	hashCode

Constructor Summary

Constructors

Constructor	Description
WeakKeyReference(@Nullable K key, @Nullable ReferenceQueue<K> queue)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object object)
Object	getKeyReference()	Returns the key that is associated to the cache entry holding this reference.
int	hashCode()

Methods inherited from class Reference

clear, clone, enqueue, get, isEnqueued, reachabilityFence, refersTo

Methods inherited from class Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface References.InternalReference

get, referenceEquals

Field Details

hashCode

private final int hashCode

Constructor Details

WeakKeyReference

public WeakKeyReference(@Nullable K key,
 @Nullable ReferenceQueue<K> queue)

Method Details

getKeyReference

public Object getKeyReference()

Description copied from interface: References.InternalReference

Returns the key that is associated to the cache entry holding this reference. If the cache holds keys strongly, this is that key instance. Otherwise the cache holds keys weakly and the References.WeakKeyReference is returned.

Specified by:

getKeyReference in interface References.InternalReference<K>

Returns:

the key that is associated to the cached entry

equals

public boolean equals(Object object)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object