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    import com.liferay.portlet.social.model.SocialEquityIncrementPayload;
019    
020    import java.lang.reflect.Constructor;
021    
022    /**
023     * @author Shuyang Zhou
024     */
025    public class IncrementFactory {
026    
027            @SuppressWarnings("rawtypes")
028            public static Increment createIncrement(
029                            Class<? extends Increment<?>> counterClass, Object value)
030                    throws SystemException {
031    
032                    if ((counterClass == NumberIncrement.class) &&
033                            (value instanceof Number)) {
034    
035                            return new NumberIncrement((Number)value);
036                    }
037                    else if ((counterClass == SocialEquityIncrement.class) &&
038                                     (value instanceof SocialEquityIncrementPayload)) {
039    
040                            return new SocialEquityIncrement(
041                                    (SocialEquityIncrementPayload)value);
042                    }
043    
044                    try {
045                            Constructor<? extends Increment<?>> constructor =
046                                    counterClass.getConstructor(value.getClass());
047    
048                            return constructor.newInstance(value);
049                    }
050                    catch (Exception e) {
051                            throw new SystemException(e);
052                    }
053            }
054    
055    }