001    /**
002     * Copyright (c) 2000-2010 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.kernel.upgrade.util;
016    
017    import com.liferay.portal.kernel.exception.SystemException;
018    
019    /**
020     * @author Brian Wing Shun Chan
021     * @author Alexander Chow
022     */
023    public interface UpgradeColumn {
024    
025            public String getName();
026    
027            public long increment() throws SystemException;
028    
029            public boolean isApplicable(String name);
030    
031            public Integer getOldColumnType(Integer defaultType);
032    
033            public Object getOldValue();
034    
035            public void setOldValue(Object oldValue);
036    
037            public Integer getNewColumnType(Integer defaultType);
038    
039            public Object getNewValue(Object oldValue) throws Exception;
040    
041            public Object getNewValue();
042    
043            public void setNewValue(Object newValue);
044    
045    }