| /* |
| * 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.jackrabbit.oak.plugins.document; |
| |
| import java.util.Comparator; |
| |
| import org.apache.jackrabbit.oak.plugins.document.util.Utils; |
| |
| /** |
| * Implements a comparator, which sorts NodeDocumentId string according to 1) their |
| * depth (highest first) and 2) the id string itself. |
| */ |
| public class NodeDocumentIdComparator implements Comparator<String> { |
| public static final Comparator<String> INSTANCE = new NodeDocumentIdComparator(); |
| |
| private NodeDocumentIdComparator() { |
| } |
| |
| @Override |
| public int compare(String o1, String o2) { |
| int d1 = Utils.getDepthFromId(o1); |
| int d2 = Utils.getDepthFromId(o2); |
| if (d1 != d2) { |
| return Integer.signum(d2 - d1); |
| } |
| return o1.compareTo(o2); |
| } |
| } |