<?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" >
<mapper namespace="com.sincere.student.mapper.MajorMapper">

    <resultMap id="MajorMap" type="com.sincere.student.model.Major">
        <id column="id" property="id"/>
        <result column="major" property="major"/>
        <result column="major_code" property="majorCode"/>

        <result column="p_id" property="pid"/>

        <result column="create_time" property="createTime"/>

    </resultMap>

    <select id="getById" parameterType="java.lang.Integer" resultMap="MajorMap">
        select * from university_major
        where id =#{id}
    </select>

    <select id="getList" parameterType="com.sincere.student.model.Major" resultMap="MajorMap">
        select * from university_major

         <where>
             <if test="pid != 0">

                and p_id = #{pid}

             </if>
             <if test="major != null and major != ''">

                and major like #{major}

             </if>
         </where>

    </select>

    <select id="getListCount" parameterType="com.sincere.student.model.Major" resultType="java.lang.Integer">
        select count(0) from university_major
        <where>

            <if test="pid != 0">
                and p_id = #{pid}

            </if>

            <if test="major != null and major != ''">

                and major like #{major}
            </if>

        </where>
    </select>

    <insert id="create" parameterType="com.sincere.student.model.Major" >

        insert into university_major (major,major_code,p_id,create_time)

        values (#{major},#{majorCode},#{pid},GETDATE())

    </insert>

    <delete id="delete" parameterType="java.lang.Integer">
        delete university_major where id = #{id}
    </delete>

    <delete id="deleteByPid" parameterType="java.lang.Integer">
        delete university_major where p_id = #{id}
    </delete>

    <update id="update" parameterType="com.sincere.student.model.Major">
        update university_major
        <trim prefix="set" suffixOverrides=",">
            <if test="major!=null">
                major=#{major},
            </if>
            <if test="majorCode!=null">
                major_code=#{majorCode},
            </if>

            <if test="pid!=0">
                p_id=#{pid},
            </if>

        </trim>
        where id = #{id}
    </update>

    <resultMap id="MajorMap2" type="com.sincere.student.model.Major">
        <result column="f_id" property="id"/>
        <result column="f_major" property="major"/>
        <collection property="children" ofType="com.sincere.student.model.Major">
            <result column="s_id" property="id"/>
            <result column="s_major" property="major"/>
        </collection>
    </resultMap>

    <select id="selectMajor"  resultMap="MajorMap2" >
                select f.id as f_id , f.major as f_major , s.id as s_id  , s.major as s_major from
         university_major s
				join university_major f on f.id = s.p_id

    </select>

</mapper>