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view src/goodjava/util/WeakCacheMap.java @ 1754:d179810c6148
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author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Sat, 04 Feb 2023 22:53:05 -0700 |
parents | 1b809d2fdf03 |
children |
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package goodjava.util; import java.lang.ref.ReferenceQueue; import java.lang.ref.WeakReference; public class WeakCacheMap<K,V> extends CacheMap<K,V> { static final class MyWeakReference<K,V> extends WeakReference<V> implements MyReference<K,V> { private final K key; MyWeakReference(K key,V value,ReferenceQueue<V> q) { super(value,q); this.key = key; } public K key() { return key; } public boolean equals(Object obj) { Object o = this.get(); if( o==null ) return false; WeakReference ref = (WeakReference)obj; return o.equals(ref.get()); } } protected MyReference<K,V> newReference(K key,V value,ReferenceQueue<V> q) { return new MyWeakReference<K,V>(key,value,q); } }