| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.apache.ode.utils.uuid; |
| |
| import java.io.Serializable; |
| |
| /** |
| * Universally Unique Identifier. |
| */ |
| public class UUID implements Serializable { |
| |
| private static final long serialVersionUID = -2632846855777989452L; |
| |
| private static final UUIDGen UUIDGEN = new UUIDGen(); |
| |
| private String _id; |
| |
| public UUID() { |
| _id = prefix() + UUIDGEN.nextUUID(); |
| } |
| |
| protected UUID(String id) { |
| if (!id.startsWith(prefix())) { |
| throw new IllegalArgumentException("Invalid UUID"); |
| } |
| |
| _id = id; |
| } |
| |
| /** |
| * @see java.lang.Object#equals(java.lang.Object) |
| */ |
| public boolean equals(Object o) { |
| return (o.getClass() == getClass()) && ((UUID) o)._id.equals(_id); |
| } |
| |
| /** |
| * @see java.lang.Object#hashCode() |
| */ |
| public int hashCode() { |
| return _id.hashCode(); |
| } |
| |
| /** |
| * String form of a uuid. |
| * |
| * @param uuid |
| * convert the <code>uuid</code> to a string |
| * @return string representation |
| */ |
| public static String toIdString(UUID uuid) { |
| return uuid._id; |
| } |
| |
| /** |
| * @see java.lang.Object#toString() |
| */ |
| public String toString() { |
| return _id; |
| } |
| |
| protected String prefix() { |
| return ""; |
| } |
| } |