DifferenceNameClass.java

/*
 * @(#)$Id: DifferenceNameClass.java,v 1.4 2001/11/28 01:49:03 kk122374 Exp $
 *
 * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * This software is the proprietary information of Sun Microsystems, Inc.  
 * Use is subject to license terms.
 * 
 */
package com.sun.msv.grammar;

/**
 * <difference> name class.
 * 
 * @author <a href="mailto:kohsuke.kawaguchi@eng.sun.com">Kohsuke KAWAGUCHI</a>
 */
public class DifferenceNameClass extends NameClass {
	public final NameClass nc1;
	public final NameClass nc2;
	
	/**
	 * accepts a name if it is accepted by nc1 and not by nc2.
	 */
	public boolean accepts( String namespaceURI, String localPart ) {
		return nc1.accepts(namespaceURI,localPart)
			&& !nc2.accepts(namespaceURI,localPart);
	}
	
	public Object visit( NameClassVisitor visitor ) {
		return visitor.onDifference(this);
	}
	
	public DifferenceNameClass( NameClass nc1, NameClass nc2 ) {
		this.nc1 = nc1;
		this.nc2 = nc2;
	}
    
    public String toString() {
        return nc1.toString()+"-"+nc2.toString();
    }
}