| /** |
| * 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.hadoop.tools.rumen; |
| |
| /** |
| * This describes a path from a node to the root. We use it when we compare two |
| * trees during rumen unit tests. If the trees are not identical, this chain |
| * will be converted to a string which describes the path from the root to the |
| * fields that did not compare. |
| * |
| */ |
| public class TreePath { |
| final TreePath parent; |
| |
| final String fieldName; |
| |
| final int index; |
| |
| public TreePath(TreePath parent, String fieldName) { |
| super(); |
| |
| this.parent = parent; |
| this.fieldName = fieldName; |
| this.index = -1; |
| } |
| |
| public TreePath(TreePath parent, String fieldName, int index) { |
| super(); |
| |
| this.parent = parent; |
| this.fieldName = fieldName; |
| this.index = index; |
| } |
| |
| @Override |
| public String toString() { |
| String mySegment = fieldName + (index == -1 ? "" : ("[" + index + "]")); |
| |
| return ((parent == null) ? "" : parent.toString() + "-->") + mySegment; |
| } |
| } |