Scope.java

/*
 * This file is part of the OpenNMS(R) Application.
 *
 * OpenNMS(R) is Copyright (C) 2008 The OpenNMS Group, Inc.  All rights reserved.
 * OpenNMS(R) is a derivative work, containing both original code, included code and modified
 * code that was published under the GNU General Public License. Copyrights for modified
 * and included code are below.
 *
 * OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
 *
 * Original code base Copyright (C) 1999-2001 Oculan Corp.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 * For more information contact:
 * OpenNMS Licensing       <license@opennms.org>
 *     http://www.opennms.org/
 *     http://www.opennms.com/
 */
package org.infosec.ismp.poller.pollable;

import org.infosec.ismp.model.event.EventConstants;

public enum Scope {
	SERVICE, INTERFACE, NODE, NETWORK;

	public static Scope fromUei(String uei) {
		if (EventConstants.NODE_DOWN_EVENT_UEI.equals(uei)) {
			return NODE;
		} else if (EventConstants.INTERFACE_DOWN_EVENT_UEI.equals(uei)) {
			return INTERFACE;
		} else if (EventConstants.NODE_LOST_SERVICE_EVENT_UEI.equals(uei)) {
			return SERVICE;
		}
		return null;
	}

	public boolean isLargerThan(Scope s) {
		if (s == null)
			return true;
		return this.ordinal() > s.ordinal();
	}

	public boolean isSmallerThan(Scope s) {
		if (s == null)
			return false;
		return this.ordinal() < s.ordinal();
	}

	public static boolean isLargerThan(Scope a, Scope b) {
		if (a == null && b == null) {
			return false;
		} else if (a == null && b != null) {
			return false;
		} else if (a != null && b == null) {
			return true;
		} else {
			return a.isLargerThan(b);
		}
	}

	public static boolean isSmallerThan(Scope a, Scope b) {
		return a != b && !isLargerThan(a, b);
	}

}