001/*
002 * This library is part of OpenCms -
003 * the Open Source Content Management System
004 *
005 * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com)
006 *
007 * This library is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * This library is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015 * Lesser General Public License for more details.
016 *
017 * For further information about Alkacon Software, please see the
018 * company website: http://www.alkacon.com
019 *
020 * For further information about OpenCms, please see the
021 * project website: http://www.opencms.org
022 *
023 * You should have received a copy of the GNU Lesser General Public
024 * License along with this library; if not, write to the Free Software
025 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
026 */
027
028package org.opencms.gwt.shared.property;
029
030import java.util.HashMap;
031import java.util.Map;
032
033/**
034 * A lazy initialized map of properties. Will return a property object for any key.<p>
035 */
036public class CmsLazyPropertyMap extends HashMap<String, CmsClientProperty> {
037
038    /** Serial version id. */
039    private static final long serialVersionUID = -404780265142470052L;
040
041    /**
042     * Constructor.<p>
043     *
044     * @param original properties that will be added to this map
045     */
046    public CmsLazyPropertyMap(Map<String, CmsClientProperty> original) {
047
048        super(original);
049    }
050
051    /**
052     * Returns the property with the given name.<p>
053     *
054     * @param key the property name
055     *
056     * @return the property
057     */
058    @Override
059    public CmsClientProperty get(Object key) {
060
061        CmsClientProperty result = super.get(key);
062        if (result == null) {
063            result = new CmsClientProperty((String)key, "", "");
064            put((String)key, result);
065        }
066        return result;
067    }
068}