meetingdaoimpl.java

一段很有意义的源码,看了就知道,不信试一试啊!

package com.wondersgroup.businessmodule.meetingmanage.dao.impl;

import java.sql.Timestamp;
import java.util.Date;

import com.wondersgroup.businessmodule.meetingmanage.bo.BusinessMeeting;
import com.wondersgroup.businessmodule.meetingmanage.dao.BusinessMeetingDAO;
import com.wondersgroup.framework.core.dao.impl.AbstractHibernateDAOImpl;

public class MeetingDAOImpl extends AbstractHibernateDAOImpl implements
BusinessMeetingDAO {
	private String maxCode;
	private Date date;
	public Class getEntityClass(){
		return BusinessMeeting.class;
	}
	public String getMaxCode(){
		date = new Date();//获取当天时间
		String str = String.valueOf(date.getYear()+1900);
		if(date.getMonth()<10)
			str += "0";
		str += String.valueOf(date.getMonth()+1);
		if(date.getDate()<10)
			str += "0";
		str += String.valueOf(date.getDate());
//		maxCode = (String)getSession().createQuery("select cast(m.id as bigint) from BusinessMeeting m where m.id like '"+str+"%'").uniqueResult();
		maxCode = (String)getSession().createQuery("select max(m.id) from BusinessMeeting m where m.id like '"+str+"%'").uniqueResult();
		return maxCode;
	}
}