001/*
002 * Licensed to DuraSpace under one or more contributor license agreements.
003 * See the NOTICE file distributed with this work for additional information
004 * regarding copyright ownership.
005 *
006 * DuraSpace licenses this file to you under the Apache License,
007 * Version 2.0 (the "License"); you may not use this file except in
008 * compliance with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.fcrepo.audit;
019
020import java.util.StringJoiner;
021import java.util.stream.IntStream;
022
023/**
024 * PID minter that creates hierarchical IDs from a given UUID.
025 *
026 * @author  awoods
027 * @since 2016-07-03
028 */
029public class UuidPathMinter {
030
031    private static final int DEFAULT_LENGTH = 2;
032    private static final int DEFAULT_COUNT = 4;
033
034    /**
035     * Mint a unique identifier given a UUID
036     *
037     * @param uuid from which identifier will be created
038     * @return hierarchical identifier
039     */
040    public String get(final String uuid) {
041        final StringJoiner joiner = new StringJoiner("/", "", "/" + uuid);
042
043        IntStream.rangeClosed(0, DEFAULT_COUNT - 1)
044                .forEach(x -> joiner.add(uuid.substring(x * DEFAULT_LENGTH, (x + 1) * DEFAULT_LENGTH)));
045
046        return joiner.toString();
047    }
048}