<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!--
这个文件是自动生成的。
不要修改此文件。所有改动将在下次重新自动生成时丢失。
-->
<mapper namespace="com.ym.mec.biz.dal.dao.CourseHomeworkDao">
	
	<resultMap type="com.ym.mec.biz.dal.entity.CourseHomework" id="CourseHomework">
		<result column="id_" property="id" />
		<result column="course_schedule_id_" property="courseScheduleId" />
		<result column="attachments_" property="attachments" />
		<result column="content_" property="content" />
		<result column="create_time_" property="createTime" />
		<result column="update_time_" property="updateTime" />
		<result column="music_group_id_" property="musicGroupId" />
		<result column="class_group_id_" property="classGroupId" />
		<result column="completed_num_" property="completedNum" />
		<result column="expect_num_" property="expectNum" />
		<result column="next_class_date_" property="expiryDate" />
	</resultMap>

	<resultMap type="com.ym.mec.biz.dal.dto.CourseHomeworkListDto" id="CourseHomeworkDto">
		<result column="id_" property="id" />
		<result column="course_schedule_id_" property="courseScheduleId" />
		<result column="content_" property="content" />
		<result column="create_time_" property="createTime" />
		<result column="start_class_time_" property="startClassTime" />
		<result column="music_group_id_" property="musicGroupId" />
		<result column="music_group_name_" property="musicGroupName" />
		<result column="class_group_id_" property="classGroupId" />
		<result column="class_group_name_" property="classGroupName" />
		<result column="completed_num_" property="completedNum" />
		<result column="expect_num_" property="expectNum" />
		<result column="next_class_date_" property="expiryDate" />
		<result column="remark_" property="remark" />
		<result column="status_" property="status" typeHandler="com.ym.mec.common.dal.CustomEnumTypeHandler"/>
		<result column="is_replied_" property="isReplied" typeHandler="com.ym.mec.common.dal.CustomEnumTypeHandler"/>
	</resultMap>
	
	<!-- 根据主键查询一条记录 -->
	<select id="get" resultMap="CourseHomework" >
		SELECT * FROM course_homework WHERE id_ = #{id} 
	</select>
	
	<!-- 全查询 -->
	<select id="findAll" resultMap="CourseHomework">
		SELECT * FROM course_homework ORDER BY id_
	</select>
	
	<!-- 向数据库增加一条记录 -->
	<insert id="insert" parameterType="com.ym.mec.biz.dal.entity.CourseHomework" useGeneratedKeys="true" keyColumn="id" keyProperty="id">
		<!--
		<selectKey resultClass="int" keyProperty="id" > 
		SELECT SEQ_WSDEFINITION_ID.nextval AS ID FROM DUAL 
		</selectKey>
		-->
		INSERT INTO course_homework (id_,course_schedule_id_,attachments_,content_,create_time_,update_time_,music_group_id_,class_group_id_,completed_num_,expect_num_) VALUES(#{id},#{courseScheduleId},#{attachments},#{content},now(),now(),#{musicGroupId},#{classGroupId},#{completedNum},#{expectNum})
	</insert>
	
	<!-- 根据主键查询一条记录 -->
	<update id="update" parameterType="com.ym.mec.biz.dal.entity.CourseHomework">
		UPDATE course_homework <set>
		<if test="attachments != null">
			attachments_ = #{attachments},
		</if>
		<if test="id != null">
		id_ = #{id},
		</if>
		<if test="classGroupId != null">
		class_group_id_ = #{classGroupId},
		</if>
		<if test="courseScheduleId != null">
		course_schedule_id_ = #{courseScheduleId},
		</if>
		<if test="completedNum != null">
			completed_num_ = #{completedNum},
		</if>

		<if test="expectNum != null">
			expect_num_ = #{expectNum},
		</if>
		<if test="updateTime != null">
		update_time_ = #{updateTime},
		</if>
		<if test="content != null">
		content_ = #{content},
		</if>
		<if test="musicGroupId != null">
		music_group_id_ = #{musicGroupId},
		</if>
		<if test="createTime != null">
		create_time_ = #{createTime},
		</if>
		</set> WHERE id_ = #{id}
	</update>
	
	<!-- 根据主键删除一条记录 -->
	<delete id="delete" >
		DELETE FROM course_homework WHERE id_ = #{id} 
	</delete>

	<sql id="queryCondition">
		<where>
			<if test="createTime != null">
				DATE_FORMAT(ch.create_time_,"%Y%m%d") = DATE_FORMAT(#{createTime},"%Y%m%d")
			</if>
			<if test="musicGroupId != null">
				and ch.music_group_id_ = #{musicGroupId}
			</if>
			<if test="classGroupId != null">
				and ch.class_group_id_ = #{classGroupId}
			</if>
			<if test="userId != null">
				and cs.actual_teacher_id_ = #{userId}
			</if>
		</where>
	</sql>
	
	<!-- 分页查询 -->
	<select id="queryPage" resultMap="CourseHomeworkDto" parameterType="map">
		SELECT
			ch.*,
			mg.name_ music_group_name_,
			cg.name_ class_group_name_,
			temp.next_class_date_
		FROM course_homework ch
		LEFT JOIN course_schedule cs ON ch.course_schedule_id_=cs.id_
		LEFT JOIN music_group mg ON ch.music_group_id_=mg.id_
		LEFT JOIN class_group cg ON ch.class_group_id_=cg.id_
		LEFT JOIN (SELECT
					class_group_id_,
					MIN(CONCAT( class_date_, ' ', start_class_time_ )) next_class_date_
					FROM
					course_schedule
					WHERE CONCAT( class_date_, ' ', start_class_time_ )>now()
					GROUP BY class_group_id_) temp ON ch.class_group_id_=temp.class_group_id_
		<include refid="queryCondition"/>
		ORDER BY ch.id_
		<include refid="global.limit"/>
	</select>
	
	<!-- 查询当前表的总记录数 -->
	<select id="queryCount" resultType="int">
		SELECT COUNT(*) FROM course_homework
	</select>
</mapper>
