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COOS - Connected Objects Operating System (www.connectedobjects.org). Copyright (C) 2009 Telenor ASA and Tellu AS. All rights reserved. DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. This library is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. You may also contact one of the following for additional information: Telenor ASA, Snaroyveien 30, N-1331 Fornebu, Norway (www.telenor.no) Tellu AS, Hagalokkveien 13, N-1383 Asker, Norway (www.tellu.no)
 
 package org.coos.messaging.util;


Author(s):
Knut Eilif Husa, Tellu AS Helper class for parsing UUIDs
 
 public class UuidHelper {
 
 	/*
 	 * This method returns the segment part from a endpointName/alias or an endpointUuid
 	 * Must only be used for qualified endpoint identificators
 	 */
 	public static String getSegmentFromEndpointNameOrEndpointUuid(String segmentedUuid) {
 		int idx = segmentedUuid.lastIndexOf('.');
 		if (idx > 0) {
 			String seg = segmentedUuid.substring(0, idx);
 			/*if(!seg.startsWith(".")){
 				seg = "." + seg;
 			}*/
 			return seg;
 		} else {
 			return ".";
 		}
 	}
 	
 	/*
 	 * This method returns the segment part from an endpointUuid or segment
 	 * Must not be used on endpointNames/Aliases
 	 */
 	public static String getSegmentFromSegmentOrEndpointUuid(String segmentOrEndpointUuid) {
 		if(isSegment(segmentOrEndpointUuid)) {
 			return segmentOrEndpointUuid;
 		} else {
 			return getSegmentFromEndpointNameOrEndpointUuid(segmentOrEndpointUuid);
 		}
 	}
 	
 	
 	/*
 	 * Checks if the alias is valid for for an segmented endpointUuid
 	 */
 	public static boolean isValidAliasForUuid(String aliasString segmentedUuid){
 		if(aliasSegment.equals("dico") || aliasSegment.equals("localcoos")){
 			return true;
 		}
 		String segment = getSegmentFromEndpointNameOrEndpointUuid(segmentedUuid);
 		if(aliasSegment.equals(segment)){
 			return true;
 		}
 		return false;
 	}
 
 	public static String getParentSegment(String segmentedUuid) {
 		String segment = getSegmentFromSegmentOrEndpointUuid(segmentedUuid);
 		if (segment.equals(".")) {
 			return ""// segementedUuid on top level
 		}
 		int idx = segment.lastIndexOf('.');
 		if (idx > 0) {
 			return segmentedUuid.substring(0, idx);
 		} else {
 			return ".";
 		}
 	}
 	
 	public static String getQualifiedUuid(String uuid){
 		if (uuid.indexOf("UUID-") == -1) {
 			return uuid//Not an Uuid, returning input parameter
 		}
 		if (uuid.startsWith("UUID-")){
 			uuid = "."+uuid;
 		}
 		return uuid;
 	}
	public static boolean isUuid(String segmentedUuid) {
		if (segmentedUuid == null) {
			return false;
		}
		if (segmentedUuid.indexOf("UUID-") != -1 ) {
			return true;
else {
			return false;
		}
	}
	public static boolean isRouterUuid(String segmentedUuid) {
		if (segmentedUuid == null) {
			return false;
		}
		if (segmentedUuid.indexOf("UUID-R-") != -1) {
			return true;
else {
			return false;
		}
	}
	public static boolean isSegment(String segmentedUuid) {
		if (segmentedUuid == null) {
			return false;
		}
		return segmentedUuid.indexOf("UUID-") == -1;
	}
	public static String replaceSegment(String uuidString segmentName) {
		if (isSegment(uuid)) {
			return segmentName;
else {
			int idx = uuid.lastIndexOf('.');
			if (idx != -1) {
				if (segmentName.equals(".")) {
					return uuid.substring(idx);
else {
					return segmentName + uuid.substring(idx);
				}
else {
				return segmentName;
			}
		}
	}
	/*
	 * Checks whether segments is in a parent child relation 
	 */
	public static boolean isInParentChildRelation(String seg1String seg2) {
		return (getParentSegment(seg1).equals(seg2)|| getParentSegment(seg2).equals(seg1));
	}
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