OrderedProperties.java |
1 /** 2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved. 3 * 4 * The contents of this file are subject to the terms of the Liferay Enterprise 5 * Subscription License ("License"). You may not use this file except in 6 * compliance with the License. You can obtain a copy of the License by 7 * contacting Liferay, Inc. See the License for the specific language governing 8 * permissions and limitations under the License, including but not limited to 9 * distribution rights of the Software. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 12 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 13 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 14 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 15 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 17 * SOFTWARE. 18 */ 19 20 package com.liferay.portal.kernel.util; 21 22 import java.util.Enumeration; 23 import java.util.Properties; 24 import java.util.Vector; 25 26 /** 27 * <a href="OrderedProperties.java.html"><b><i>View Source</i></b></a> 28 * 29 * @author Brian Wing Shun Chan 30 * 31 */ 32 public class OrderedProperties extends Properties { 33 34 public OrderedProperties() { 35 super(); 36 37 _names = new Vector<String>(); 38 } 39 40 public Enumeration<String> propertyNames() { 41 return _names.elements(); 42 } 43 44 public Object put(Object key, Object value) { 45 if (_names.contains(key)) { 46 _names.remove(key); 47 } 48 49 _names.add((String)key); 50 51 return super.put(key, value); 52 } 53 54 public Object remove(Object key) { 55 _names.remove(key); 56 57 return super.remove(key); 58 } 59 60 private Vector<String> _names; 61 62 }