001    /**
002     * Copyright (c) 2000-2011 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.increment;
016    
017    import com.liferay.portal.kernel.exception.SystemException;
018    
019    import java.lang.reflect.Constructor;
020    
021    /**
022     * @author Shuyang Zhou
023     */
024    public class IncrementFactory {
025    
026            @SuppressWarnings("rawtypes")
027            public static Increment createIncrement(
028                            Class<? extends Increment<?>> counterClass, Object value)
029                    throws SystemException {
030    
031                    if ((counterClass == NumberIncrement.class) &&
032                            (value instanceof Number)) {
033    
034                            return new NumberIncrement((Number)value);
035                    }
036    
037                    try {
038                            Constructor<? extends Increment<?>> constructor =
039                                    counterClass.getConstructor(value.getClass());
040    
041                            return constructor.newInstance(value);
042                    }
043                    catch (Exception e) {
044                            throw new SystemException(e);
045                    }
046            }
047    
048    }