realty/virgo.ringzle/target/classes/mapper/IotEntityDataMapper.xml

<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.bosshand.virgo.ringzle.dao.IotEntityDataDao">

    <resultMap type="com.bosshand.virgo.ringzle.model.IotEntityData" id="iotEntityDataResult">
        <id column="id" property="id"/>
        <result column="iotEntityId" property="iotEntityId"/>
        <result column="data" property="data"/>
        <result column="date" property="date"/>
    </resultMap>

    <insert id="save" parameterType="com.bosshand.virgo.ringzle.model.IotEntityData" useGeneratedKeys="true" keyProperty="id">
        INSERT INTO iot_entity_data (iotEntityId,data,date) VALUES (#{iotEntityId},#{data},now());
    </insert>

    <select id="get" resultMap="iotEntityDataResult">
        select * from iot_entity_data where iotEntityId = #{iotEntityId} order by date desc limit 0,1;
    </select>

</mapper>