com.openharbor.beck.map
Class HashableSoftReference

java.lang.Object
  java.lang.ref.Reference
      java.lang.ref.SoftReference
          com.openharbor.beck.map.HashableSoftReference

public class HashableSoftReference

extends java.lang.ref.SoftReference

A SoftReference that can be used as a key in a HashMap. The hashCode and equals methods delegate to the referent. Garbage collection doesn't cause the hashCode to change (assuming the referent's hashCode doesn't change).

Constructor Summary

HashableSoftReference(java.lang.Object referent)

HashableSoftReference(java.lang.Object referent, java.lang.ref.ReferenceQueue epitaph)

Method Summary

boolean	equals(java.lang.Object that)
int	hashCode()

Methods inherited from class java.lang.ref.SoftReference

get

Methods inherited from class java.lang.ref.Reference

clear, enqueue, isEnqueued

Methods inherited from class java.lang.Object

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

Constructor Detail

HashableSoftReference

public HashableSoftReference(java.lang.Object referent)
                      throws java.lang.NullPointerException

Throws:

java.lang.NullPointerException - if referent == null.

HashableSoftReference

public HashableSoftReference(java.lang.Object referent,
                             java.lang.ref.ReferenceQueue epitaph)
                      throws java.lang.NullPointerException

Throws:

java.lang.NullPointerException - if referent == null.

Method Detail

hashCode

public int hashCode()

equals

public boolean equals(java.lang.Object that)