| /* |
| * 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.rya.api.utils; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| import java.util.UUID; |
| |
| /** |
| * Utility methods and constants for {@link UUID}s. |
| */ |
| public final class UuidUtils { |
| /** |
| * The length of a {@link UUID} string. It is 32 characters long and has 4 |
| * hyphens for a total of 36 characters. |
| */ |
| public static final int UUID_STRING_LENGTH = 36; |
| |
| /** |
| * Private constructor to prevent instantiation. |
| */ |
| private UuidUtils() { |
| } |
| |
| /** |
| * Extracts a UUID from the end of a string. |
| * @param text the string to extract from. (not {@code null}. |
| * @return the {@link UUID}. |
| */ |
| public static UUID extractUuidFromStringEnd(final String text) { |
| requireNonNull(text); |
| final String uuidString = text.substring(text.length() - UUID_STRING_LENGTH, text.length()); |
| final UUID uuid = UUID.fromString(uuidString); |
| return uuid; |
| } |
| } |