brooklyn.policy.followthesun.WeightedObject Maven / Gradle / Ivy
package brooklyn.policy.followthesun;
public class WeightedObject implements Comparable>{
final T object;
final double weight;
public WeightedObject(T obj, double weight) {
this.object = obj;
this.weight = weight;
}
public T getObject() {
return object;
}
public double getWeight() {
return weight;
}
/**
* Note that equals and compareTo are not consistent: x.compareTo(y)==0 iff x.equals(y) is
* highly recommended in Java, but is not required. This can make TreeSet etc behave poorly...
*/
public int compareTo(WeightedObject o) {
double diff = o.getWeight() - weight;
if (diff>0.0000000000000001) return -1;
if (diff<-0.0000000000000001) return 1;
return 0;
}
@Override
/** true irrespective of weight */
public boolean equals(Object obj) {
if (!(obj instanceof WeightedObject)) return false;
if (getObject()==null) {
return ((WeightedObject)obj).getObject() == null;
} else {
return getObject().equals( ((WeightedObject)obj).getObject() );
}
}
@Override
public int hashCode() {
if (getObject()==null) return 234519078;
return getObject().hashCode();
}
@Override
public String toString() {
return ""+getObject()+"["+getWeight()+"]";
}
}