src/com/ischoolbar/programmer/dao/ClazzDao.java

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package com.ischoolbar.programmer.dao;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import com.ischoolbar.programmer.model.Clazz;
import com.ischoolbar.programmer.model.Page;
import com.ischoolbar.programmer.util.StringUtil;

/**
 * 
 * 公众号：springmeng
 *班级信息数据库操作
 */
public class ClazzDao extends BaseDao {
	public List<Clazz> getClazzList(Clazz clazz,Page page){
		List<Clazz> ret = new ArrayList<Clazz>();
		String sql = "select * from s_clazz ";
		if(!StringUtil.isEmpty(clazz.getName())){
			sql += "where name like '%" + clazz.getName() + "%'";
		}
		sql += " limit " + page.getStart() + "," + page.getPageSize();
		ResultSet resultSet = query(sql);
		try {
			while(resultSet.next()){
				Clazz cl = new Clazz();
				cl.setId(resultSet.getInt("id"));
				cl.setName(resultSet.getString("name"));
				cl.setInfo(resultSet.getString("info"));
				ret.add(cl);
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return ret;
	}
	public int getClazzListTotal(Clazz clazz){
		int total = 0;
		String sql = "select count(*)as total from s_clazz ";
		if(!StringUtil.isEmpty(clazz.getName())){
			sql += "where name like '%" + clazz.getName() + "%'";
		}
		ResultSet resultSet = query(sql);
		try {
			while(resultSet.next()){
				total = resultSet.getInt("total");
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return total;
	}
	public boolean addClazz(Clazz clazz){
		String sql = "insert into s_clazz values(null,'"+clazz.getName()+"','"+clazz.getInfo()+"') ";
		return update(sql);
	}