001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018package org.apache.commons.configuration2; 019 020import java.util.Iterator; 021 022/** 023 * Strict comparator for configurations. 024 * 025 * @since 1.0 026 * 027 * @author <a href="mailto:herve.quiroz@esil.univ-mrs.fr">Herve Quiroz</a> 028 * @author <a href="mailto:shapira@mpi.com">Yoav Shapira</a> 029 * @version $Id: StrictConfigurationComparator.java 1624601 2014-09-12 18:04:36Z oheger $ 030 */ 031public class StrictConfigurationComparator implements ConfigurationComparator 032{ 033 /** 034 * Create a new strict comparator. 035 */ 036 public StrictConfigurationComparator() 037 { 038 } 039 040 /** 041 * Compare two configuration objects. 042 * 043 * @param a the first configuration 044 * @param b the second configuration 045 * @return true if keys from a are found in b and keys from b are 046 * found in a and for each key in a, the corresponding value 047 * is the sale in for the same key in b 048 */ 049 @Override 050 public boolean compare(Configuration a, Configuration b) 051 { 052 if (a == null && b == null) 053 { 054 return true; 055 } 056 else if (a == null || b == null) 057 { 058 return false; 059 } 060 061 for (Iterator<String> keys = a.getKeys(); keys.hasNext();) 062 { 063 String key = keys.next(); 064 Object value = a.getProperty(key); 065 if (!value.equals(b.getProperty(key))) 066 { 067 return false; 068 } 069 } 070 071 for (Iterator<String> keys = b.getKeys(); keys.hasNext();) 072 { 073 String key = keys.next(); 074 Object value = b.getProperty(key); 075 if (!value.equals(a.getProperty(key))) 076 { 077 return false; 078 } 079 } 080 081 return true; 082 } 083}