registcheckbo.java

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/* ====================================================================
 * $Id$
 * ====================================================================
 *  文件名    RegistCheckBo.java
 *  机能名    
 *  履历      2005-1-30 dlxu 创建新文件  
 *           Copyright 2004 东南大学 All Rights Reserved
 * ====================================================================
 */
package cn.edu.seu.album.bo;

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.common.StringUtil;
import cn.edu.seu.album.dao.RegistCheckDao;
import cn.edu.seu.album.model.RegistSrchCondtion;
import cn.edu.seu.album.web.RegistAction;

/**
 * <p> [概 要] </p>
 * <p> [详 细] </p>
 * <p> [备 考] 无。</p>
 *
 * @author dlxu
 * @version 1.0 2005-1-30
 * @since 1.0
 */
public final class RegistCheckBo extends PJBaseBo {

    /**
     * 日志定义。
     */
    Category log = Logger.getInstance(RegistCheckBo.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 {
        try {
            log.debug("doBiz开始");

            RegistSrchCondtion cond = (RegistSrchCondtion) condition;

            // 取得用户名。
            String userName = cond.getUserName();

            if (StringUtil.isEmpty(userName)) {
                ActionMessage err = new ActionMessage("regist.userName.empty");
                errs.add(RegistAction.class.getName(), err);
            } else {
                boolean isExist = RegistCheckDao.getInstance().chechUserExists(
                        session, userName);
                if (isExist) {
                    ActionMessage err = new ActionMessage("regist.have.user");
                    errs.add(RegistAction.class.getName(), err);
                } else {
                    ActionMessage err = new ActionMessage(
                            "regist.not.have.user");
                    errs.add(RegistAction.class.getName(), err);
                }
            }
            log.debug("doBiz结束");
            return null;
        } catch (Exception e) {
            log.warn(e);
            throw new PJException(e);
        }
    }

}