/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

package org.eclipse.core.internal.dependencies;

import java.util.Collection;

/**
 * Not to be implemented by clients.
 */
public interface IElementSetVisitor {
	public int getOrder();

	public abstract void update(ElementSet node);

	public abstract Collection getAncestors(ElementSet node);

	public abstract Collection getDescendants(ElementSet node);
}