001    /**
002     * Copyright (c) 2000-2011 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
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 Augé
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    }