package org.jgroups.util;
import java.util.LinkedHashMap;
import java.util.Map;
/**
* Bounded linked hashmap; used by SEQUENCER (and probably soon) FORWARD_TO_COORD
* @author Bela Ban
* @since 3.3
*/
public class BoundedHashMap<K,V> extends LinkedHashMap<K,V> {
private static final long serialVersionUID=-5368387761328082187L;
protected final int max_size;
public BoundedHashMap(int max_size) {
this.max_size=max_size;
}
protected boolean removeEldestEntry(Map.Entry<K,V> eldest) {
return size() > max_size;
}
public boolean add(K key, V val) {
return super.put(key, val) == null;
}
}