001 /** 002 * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved. 003 * 004 * This library is free software; you can redistribute it and/or modify it under 005 * the terms of the GNU Lesser General Public License as published by the Free 006 * Software Foundation; either version 2.1 of the License, or (at your option) 007 * any later version. 008 * 009 * This library is distributed in the hope that it will be useful, but WITHOUT 010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 011 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more 012 * details. 013 */ 014 015 package com.liferay.portal.tools; 016 017 import com.liferay.portal.kernel.util.Validator; 018 019 import java.util.HashMap; 020 021 /** 022 * @author Raymond Aug?? 023 */ 024 public class ArgumentsMap extends HashMap<String, String> { 025 026 @Override 027 public String get(Object key) { 028 String value = super.get(key); 029 030 if (Validator.isNull(value)) { 031 value = System.getProperty((String)key); 032 } 033 034 return value; 035 } 036 037 }