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 */ 017package org.apache.camel.util; 018 019import java.util.ArrayList; 020import java.util.Collection; 021import java.util.Enumeration; 022import java.util.LinkedHashMap; 023import java.util.LinkedHashSet; 024import java.util.Map; 025import java.util.Properties; 026import java.util.Set; 027import java.util.Vector; 028 029/** 030 * This class is an ordered {@link Properties} where the key/values are stored in the order they are added or loaded. 031 * <p/> 032 * Note: This implementation is only intended as implementation detail for the Camel properties component, and has only 033 * been designed to provide the needed functionality. The complex logic for loading properties has been kept from the 034 * JDK {@link Properties} class. 035 */ 036public final class OrderedProperties extends Properties { 037 038 private final Map<String, String> map = new LinkedHashMap<>(); 039 040 public OrderedProperties() { 041 } 042 043 @Override 044 public synchronized Object put(Object key, Object value) { 045 return map.put(key.toString(), value.toString()); 046 } 047 048 @Override 049 public synchronized void putAll(Map<?, ?> t) { 050 for (Map.Entry<?, ?> entry : t.entrySet()) { 051 put(entry.getKey(), entry.getValue()); 052 } 053 } 054 055 @Override 056 public synchronized Object get(Object key) { 057 return map.get(key); 058 } 059 060 @Override 061 public synchronized boolean isEmpty() { 062 return map.isEmpty(); 063 } 064 065 @Override 066 public synchronized Object remove(Object key) { 067 return map.remove(key); 068 } 069 070 @Override 071 public synchronized void clear() { 072 map.clear(); 073 } 074 075 @Override 076 public String getProperty(String key) { 077 return map.get(key); 078 } 079 080 @Override 081 public String getProperty(String key, String defaultValue) { 082 return map.getOrDefault(key, defaultValue); 083 } 084 085 @Override 086 public synchronized Enumeration<Object> keys() { 087 return new Vector<Object>(map.keySet()).elements(); 088 } 089 090 @Override 091 public Set<Object> keySet() { 092 return new LinkedHashSet<>(map.keySet()); 093 } 094 095 @Override 096 @SuppressWarnings("unchecked") 097 public Set<Map.Entry<Object, Object>> entrySet() { 098 Set entrySet = map.entrySet(); 099 return entrySet; 100 } 101 102 @Override 103 public synchronized int size() { 104 return map.size(); 105 } 106 107 @Override 108 public Set<String> stringPropertyNames() { 109 return map.keySet(); 110 } 111 112 @Override 113 public Collection<Object> values() { 114 return new ArrayList<>(map.values()); 115 } 116 117 @Override 118 public synchronized String toString() { 119 return map.toString(); 120 } 121}