package com.mingde.dao;

import java.util.List;

import org.apache.ibatis.annotations.One;
import org.apache.ibatis.annotations.Result;
import org.apache.ibatis.annotations.ResultMap;
import org.apache.ibatis.annotations.Results;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.mapping.FetchType;

import com.mingde.po.Student;

public interface StudentDao {
	
	//根據班級cid查詢
	@Select("select * from student where cid=#{value}")
	public List<Student> findStudents(int cid)throws Exception;
	
	//查詢所有
	@Select("select * from student")
	@Results(id="findClasses",value={	//定義ResultMap
			@Result(column="sid",property="sid"),
			@Result(column="cid",property="classes",
 
[email protected](select="com.mingde.dao.ClassesDao.findClasses",fetchType=FetchType.LAZY))
	})
	public List<Student> SeeStudents()throws Exception;
	
	//根據學生sid查詢
	@Select("select * from student where sid=#{value}")
	@ResultMap("findClasses") //引用上面的ResultMap
	public Student findStudentById(int sid)throws Exception;
	
}