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.kernel.upgrade.util;
016    
017    import com.liferay.portal.kernel.upgrade.StagnantRowException;
018    import com.liferay.portal.kernel.util.GetterUtil;
019    
020    /**
021     * @author Brian Wing Shun Chan
022     */
023    public class DefaultPKMapper extends ValueMapperWrapper {
024    
025            public DefaultPKMapper(ValueMapper valueMapper) {
026                    super(valueMapper);
027            }
028    
029            @Override
030            public Object getNewValue(Object oldValue) throws Exception {
031                    String oldValueString = GetterUtil.getString(String.valueOf(oldValue));
032    
033                    if (oldValueString.equals("-1") || oldValueString.equals("0") ||
034                            oldValueString.equals("")) {
035    
036                            return new Long(0);
037                    }
038                    else {
039                            try {
040                                    ValueMapper valueMapper = getValueMapper();
041    
042                                    if (oldValue instanceof String) {
043                                            oldValue = oldValueString.toLowerCase();
044                                    }
045    
046                                    return valueMapper.getNewValue(oldValue);
047                            }
048                            catch (StagnantRowException sre) {
049                                    return new Long(0);
050                            }
051                    }
052            }
053    
054    }