package weka.classifiers.rules.sortinghandler;
/**
* This code is from the book:
*
* Winder, R and Roberts, G (1998) <em>Developing Java
* Software</em>, John Wiley & Sons.
*
* It is copyright (c) 1997 Russel Winder and Graham Roberts.
*/
/**
* An interface defining the necessary properties to be deemed
* to be a <code>Comparator</code>.
*
* @version 1.0 2.7.1997
* @author Russel Winder
*/
public interface Comparator
{
/**
* The relation that this <code>Comparator</code> represents.
*
* @exception ComparatorParameterErrorException if the type of
* the data is not compatible with the type expected by the
* <code>Comparator</code>.
*/
boolean relation(Object a, Object b) ;
}