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/** 
 * ============LICENSE_START=======================================================
 * org.onap.aai
 * ================================================================================
 * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============LICENSE_END=========================================================
 *
 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
 */

package org.onap.aai.edges.enums;

public enum DirectionNotation { 
	DIRECTION("${direction}"), 
	OPPOSITE("!${direction}");

	private final String val;
	
	DirectionNotation(String dir) {
		this.val = dir;
	}
	
	public static DirectionNotation getValue(String val) {
		if (DIRECTION.toString().equals(val)) {
			return DIRECTION;
		} else if (OPPOSITE.toString().equals(val)) {
			return OPPOSITE;
		} else {
			throw new IllegalArgumentException();
		}
	}
	
	@Override
	public String toString() {
		return this.val;
	}
}