vieweditbo.java

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/* ====================================================================
 * $Id$
 * ====================================================================
 *  文件名    ViewEditBo.java
 *  机能名    
 *  履历      2005-3-11 dlxu 创建新文件  
 *           Copyright 2004 东南大学 All Rights Reserved
 * ====================================================================
 */
package cn.edu.seu.album.bo;

import java.sql.Timestamp;

import org.apache.log4j.Category;
import org.apache.log4j.Logger;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import cn.edu.seu.album.common.PJBaseBo;
import cn.edu.seu.album.common.PJCondition;
import cn.edu.seu.album.common.PJException;
import cn.edu.seu.album.common.PJResult;
import cn.edu.seu.album.dao.ViewDao;
import cn.edu.seu.album.model.ViewEditCondition;
import cn.edu.seu.album.pojo.Photo;

/**
 * <p> [概 要] </p>
 * <p> [详 细] </p>
 * <p> [备 考] 无。</p>
 *
 * @author dlxu
 * @version 1.0 2005-3-11
 * @since 1.0
 */
public class ViewEditBo extends PJBaseBo {

    /**
     * 日志定义。
     */
    private static final Category log = Logger.getInstance(ViewEditBo.class);

    /**
     * <p> [概 要] </p>
     * <p> [详 细] </p>
     * <p> [备 考] 无。</p>
     * @param condition
     * @param errs
     * @return
     * @throws PJException
     * @see cn.edu.seu.album.common.PJBaseBo#doBiz(cn.edu.seu.album.common.PJCondition, org.apache.struts.action.ActionMessages)
     */
    public PJResult doBiz(PJCondition condition, ActionMessages errs)
            throws PJException {
        log.debug("doBiz开始");

        try {
            ViewEditCondition cond = (ViewEditCondition) condition;

            boolean exists = doExistsCheck(cond, errs);
            if (exists) {

                doUpdate(cond, errs);
            }

            log.debug("doBiz结束");
            return null;
        } catch (Exception e) {
            throw new PJException(e);
        }
    }

    /**
     * <p> [概 要] </p>
     * <p> [详 细] </p>
     * <p> [备 考] 无。</p>
     * @param cond
     * @param errs
     */
    private void doUpdate(ViewEditCondition cond, ActionMessages errs)
            throws Exception {
        log.debug("doUpdate开始");
        Photo photo = ViewDao.getInstance().searchPhoto(cond.getId(), session);

        photo.setPriv(cond.getPriv());
        photo.setDescription(cond.getDescription());
        photo
                .setModifyTimes(new Integer(
                        photo.getModifyTimes().intValue() + 1));
        photo.setLastUpdateDate(new Timestamp(System.currentTimeMillis()));

        ViewDao.getInstance().doUpdate(session, photo);
        
        errs.add("picture", new ActionMessage("view.edit.photo.upDateSuc"));
        log.debug("doUpdate结束");

    }

    /**
     * <p> [概 要] </p>
     * <p> [详 细] </p>
     * <p> [备 考] 无。</p>
     * @param cond
     * @param errs
     * @return
     * @throws Exception
     */
    private boolean doExistsCheck(ViewEditCondition cond, ActionMessages errs)
            throws Exception {
        log.debug("doBiz开始");
        String picId = cond.getId();
        boolean flag = ViewDao.getInstance().checkPictureExists(picId, session);

        if (!flag) {
            errs.add("picture", new ActionMessage("view.edit.photo.notExists"));

        }
        log.debug("doBiz结束");
        return flag;
    }
}