001    /**
002     * Copyright (c) 2000-present 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.portlet.exportimport.xstream;
016    
017    import com.liferay.portal.kernel.bean.BeanPropertiesUtil;
018    
019    import java.util.List;
020    
021    /**
022     * @author Akos Thurzo
023     */
024    public abstract class BaseXStreamConverter implements XStreamConverter {
025    
026            @Override
027            public abstract boolean canConvert(Class<?> clazz);
028    
029            @Override
030            public void marshal(
031                            Object object, XStreamHierarchicalStreamWriter writer,
032                            XStreamMarshallingContext xStreamMarshallingContext)
033                    throws Exception {
034    
035                    for (String field : getFields()) {
036                            writer.startNode(field);
037    
038                            Object value = BeanPropertiesUtil.getObject(object, field);
039    
040                            if (value != null) {
041                                    xStreamMarshallingContext.convertAnother(value);
042                            }
043    
044                            writer.endNode();
045                    }
046            }
047    
048            @Override
049            public abstract Object unmarshal(
050                            XStreamHierarchicalStreamReader xStreamHierarchicalStreamReader,
051                            XStreamUnmarshallingContext xStreamUnmarshallingContext)
052                    throws Exception;
053    
054            protected abstract List<String> getFields();
055    
056    }