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/*
* @(#)RefCompare.java 1.5 06/28/07
*/
package com.sun.messaging.jmq.jmsserver.data.handlers;
import java.util.*;
import com.sun.messaging.jmq.jmsserver.core.PacketReference;
public class RefCompare implements Comparator
{
public int compare(Object o1, Object o2)
{
if (o1 instanceof PacketReference &&
o2 instanceof PacketReference) {
PacketReference ref1 = (PacketReference) o1;
PacketReference ref2 = (PacketReference) o2;
// compare priority
long dif = ref2.getPriority() - ref1.getPriority();
// then timestamp
if (dif == 0)
dif = ref1.getTimestamp() - ref2.getTimestamp();
// then sequence
if (dif == 0)
dif = ref1.getSequence() - ref2.getSequence();
if (dif < 0) return -1;
if (dif > 0) return 1;
return 0;
}
return o2.hashCode() - o1.hashCode();
}
public boolean equals(Object obj) {
return super.equals(obj);
}
public int hashCode() {
return super.hashCode();
}
}