package net.sourceforge.fenixedu.domain.tests;

import java.util.Comparator;

public interface Positionable {
    public Integer getPosition();

    public void setPosition(Integer position);

    public void switchPosition(Integer relativePosition);

    public boolean isFirst();

    public boolean isLast();

    public static class PositionComparator implements Comparator<Positionable> {
	public int compare(Positionable o1, Positionable o2) {
	    return o1.getPosition() - o2.getPosition();
	}
    }

    public static final PositionComparator POSITION_COMPARATOR = new PositionComparator();
}