gold-java/src/main/resources/mapper/RoleMapper.xml

<?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.example.demo.mapper.RoleMapper">
    <update id="updateRole">
        UPDATE role
        <set>
            <if test="roleName != null">
                role_name = #{roleName},
            </if>
            <if test="priority != null">
                priority = #{priority},
            </if>
            <if test="fatherId != null">
                father_id = #{fatherId},
            </if>
        </set>
        WHERE id = #{id}
    </update>


    <select id="selectByRoleName" resultType="com.example.demo.domain.entity.Role">
        SELECT id FROM role
        <where>
            role_name = #{roleName}
        </where>
    </select>

    <select id="selectByRoleId" resultType="com.example.demo.domain.entity.Role">
        SELECT role_name FROM role
        <where>
            id = #{id}
        </where>
    </select>

    <select id="selectAllRole" resultType="com.example.demo.domain.vo.RoleVo">
        SELECT id,role_name FROM role
        <where>
            <!-- 判断 market 是否不为总部且 markets 不为空 -->
            <if test="markets != null and markets.size() > 0 and '总部' not in markets">
                AND market IN
                <foreach collection="markets" item="market" open="(" close=")" separator=",">
                    #{market}
                </foreach>
            </if>
        </where>
    </select>
    <select id="selectByFatherId" resultType="com.example.demo.domain.vo.RoleVo">
        SELECT id,role_name,priority FROM role
        <where>
            father_id = #{id}
        </where>
        ORDER BY priority desc
    </select>

    <!-- 插入角色信息 -->
    <insert id="addRole" parameterType="com.example.demo.domain.vo.RoleVo" useGeneratedKeys="true" keyProperty="id">
        INSERT INTO role
            (role_name, priority, father_id, market)
        VALUES (#{roleName}, #{priority}, #{fatherId}, #{market})
    </insert>

    <!-- 删除 role_menu 表中对应角色的数据 -->
    <delete id="deleteRoleMenu" parameterType="Integer">
        DELETE FROM role_menu WHERE role_id = #{id};
    </delete>
    <!-- 删除 role 表中对应的数据 -->
    <delete id="deleteRole" parameterType="Integer">
        DELETE FROM role WHERE id = #{id};
    </delete>

      <!-- 查询筛选后角色记录 -->
    <select id="selectBy" resultType="com.example.demo.domain.vo.RoleVo">
        SELECT r.id AS id,
        r.role_name AS roleName,
        r.priority AS priority,
        r.father_id AS fatherId,
        -- 通过自连接查询父角色名称
        father.role_name AS fatherName
        FROM role r
        -- 自连接，通过 father_id 关联父角色
        LEFT JOIN role father ON r.father_id = father.id
        <where>
            <!-- 判断 market 是否不为总部且 markets 不为空 -->
            <if test="markets != null and markets.size() > 0 and '总部' not in markets">
                AND r.market IN
                <foreach collection="markets" item="market" open="(" close=")" separator=",">
                    #{market}
                </foreach>
            </if>
            <if test="roleName != null and roleName != ''">
                r.role_name LIKE CONCAT('%', #{roleName}, '%')
            </if>
        </where>
        ORDER BY r.priority DESC
    </select>
    <!--获取当前角色的上级角色-->
    <select id="selectFather" resultType="com.example.demo.domain.vo.RoleVo">
        select  r.id as id,
                r.role_name as roleName,
                r.market as market,
                r.father_id as fatherId,
                father.market as fatherMarket,
               father.role_name as fatherName
                        from role as r
                         -- 自连接，通过 father_id 关联父角色
                       LEFT JOIN role as father ON r.father_id = father.id
        where r.id = #{id}
    </select>

</mapper>