cn.loveapple.service.aop.MetaInfoAspect.java Source code

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Here is the source code for cn.loveapple.service.aop.MetaInfoAspect.java

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/*
 * $HeadURL$
 * $Author$
 * $Revision$
 * $Date$
 *
 * ====================================================================
 *
 * Copyright (C) 2008 by loveapple.sourceforge.jp
 *
 * All copyright notices regarding loveapple and loveapple CoreLib
 * MUST remain intact in the scripts, documents and source code.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public 
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Correspondence and Marketing Questions can be sent to:
 * info at loveapple
 *
 * @author: loveapple
 */
package cn.loveapple.service.aop;

import java.util.Date;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.slim3.datastore.Model;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import cn.loveapple.service.cool.model.LoveappleModel;
import cn.loveapple.service.cool.model.MetaInfoModel;
import cn.loveapple.service.cool.service.MetaInfoService;

/**
 * 
 * @author $author:$
 * @version $Revision$
 * @date $Date$
 * @id $Id$
 *
 */
@Aspect
@Component(value = "metaInfoAspect")
@SuppressWarnings({ "unused", "unchecked" })
public class MetaInfoAspect {
    /**
     * 
     */
    private static Log log = LogFactory.getLog(MetaInfoAspect.class);

    /**
     * ?
     */
    private MetaInfoService metaInfoService;

    /**
     * 
     * @param retVal
     */
    @AfterReturning(pointcut = "execution(* cn.loveapple.service.cool.service.impl.*.update*(..))", returning = "retVal")
    private void updateMetaInfo(Object retVal) {
        if (log.isDebugEnabled()) {
            log.debug("AOP: updateMetaInfo. " + retVal);
        }
        if (retVal instanceof LoveappleModel) {
            updateMetaInfo((Class<LoveappleModel>) retVal.getClass(), 0);
        } else {
            throw new RuntimeException(" Model is not a type of " + LoveappleModel.class.getName());
        }
    }

    /**
     * 
     * @param retVal
     */
    @AfterReturning(pointcut = "execution(* cn.loveapple.service.cool.service.impl.*.insert*(..))", returning = "retVal")
    private void insertMetaInfo(Object retVal) {
        if (log.isDebugEnabled()) {
            log.debug("AOP: insertMetaInfo. " + retVal);
        }
        if (retVal instanceof LoveappleModel) {
            updateMetaInfo((Class<LoveappleModel>) retVal.getClass(), 1);
        } else {
            throw new RuntimeException(" Model is not a type of " + LoveappleModel.class.getName());
        }
    }

    /**
     * 
     * @param clz
     * @return
     */
    private MetaInfoModel updateMetaInfo(Class<LoveappleModel> clz, int count) {
        String kindName = getKindName(clz);
        MetaInfoModel model = metaInfoService.findByKind(kindName);
        MetaInfoModel result = null;
        if (model == null) {
            model = new MetaInfoModel();
            model.setKindName(kindName);
            model.setCount(count);
            model.setLastUpdateDate(new Date());
            result = metaInfoService.dmMetaInfo(model);
        } else {
            model.setCount(model.getCount() + count);
            model.setLastUpdateDate(new Date());
            result = metaInfoService.dmMetaInfo(model);
        }
        log.info("Update MetaInfo: " + result);
        return result;
    }

    /**
     * 
     * @param clz
     * @return
     */
    protected String getKindName(Class<LoveappleModel> clz) {
        Model annotation = clz.getAnnotation(Model.class);
        if (StringUtils.isEmpty(annotation.kind())) {
            return clz.getName();
        }
        return annotation.kind();
    }

    /**
     * ????
     * @param metaInfoService ?
     */
    @Autowired(required = true)
    public void setMetaInfoService(MetaInfoService metaInfoService) {
        this.metaInfoService = metaInfoService;
    }
}