001    /**
002     * Copyright (c) 2000-2011 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.upgrade.v5_0_0.util;
016    
017    import com.liferay.portal.kernel.upgrade.util.BaseUpgradeColumnImpl;
018    import com.liferay.portal.kernel.upgrade.util.UpgradeColumn;
019    import com.liferay.portal.kernel.util.Validator;
020    
021    /**
022     * @author Alexander Chow
023     */
024    public class IGImageNameColumnImpl extends BaseUpgradeColumnImpl {
025    
026            public IGImageNameColumnImpl(UpgradeColumn imageIdColumn) {
027                    super("name");
028    
029                    _imageIdColumn = imageIdColumn;
030            }
031    
032            public Object getNewValue(Object oldValue) throws Exception {
033                    String oldString = (String)oldValue;
034    
035                    if (Validator.isNull(oldString)) {
036                            return _imageIdColumn.getOldValue();
037                    }
038                    else {
039                            return oldString;
040                    }
041            }
042    
043            private UpgradeColumn _imageIdColumn;
044    
045    }