cbr.service
Class DistanceComparator

java.lang.Object
  cbr.service.DistanceComparator

All Implemented Interfaces:

Comparator

public class DistanceComparator

extends Object

implements Comparator

A comparator that compares two picture entries according to their stored distances.

Version:

"$Id: DistanceComparator.java 1913 2007-08-08 02:41:53Z jpeters $"

Author:

Volker Roth

Constructor Summary

DistanceComparator()
Creates a new instance.

Method Summary

int	compare(Object o1, Object o2) Compares two picture entries according to the distances stored in them.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals

Constructor Detail

DistanceComparator

public DistanceComparator()

Creates a new instance.

Method Detail

compare

public int compare(Object o1,
                   Object o2)

Compares two picture entries according to the distances stored in them. The result is -1, 0, or 1 if the distance of o1 is smaller than, equal to, or greater than the one of o2.

If o1 or o2 is not a PictureEntry then a ClassCastException is thrown.

Specified by:

compare in interface Comparator

Parameters:

o1 - The first PictureEntry.

o2 - The second PictureEntry.

Returns:

Either -1, 0, or 1 depending on the result of the comparison.

Throws:

ClassCastException - if o1 or o2 is not a PictureEntry