org.aspectj/docs/teaching/exercises/answers/Answer2a.java

/* *******************************************************************
 * Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
 * All rights reserved. 
 * This program and the accompanying materials are made available 
 * under the terms of the Common Public License v1.0 
 * which accompanies this distribution and is available at 
 * http://www.eclipse.org/legal/cpl-v10.html 
 *  
 * Contributors: 
 *     PARC     initial implementation 
 * ******************************************************************/

package answers;

import figures.Point;
import figures.FigureElement;

public aspect Answer2a {
    before(int newValue): set(int Point.*) && args(newValue) {
        if (newValue < FigureElement.MIN_VALUE) {
            throw new IllegalArgumentException("too small");
        } else if (newValue > FigureElement.MAX_VALUE) {
            throw new IllegalArgumentException("too large");
        }
    }
}