randd/yudao-module-iot/yudao-module-iot-biz/src/main/resources/mapper/tdengine/TdEngineMapper.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="cn.iocoder.yudao.module.iot.dal.tdengine.TdEngineMapper">

    <update id="createDatabase" parameterType="String">
        create database if not exists #{dataBaseName}
    </update>

    <update id="createSuperTable">
        create table if not exists #{dataBaseName}.#{superTableName}
        <foreach item="item" collection="schemaFields" separator=","
                 open="(" close=")" index="">
            <if test="item.fieldName != null || item.fieldName != ''">
                ${item.fieldName}
            </if>
            <if test="item.dataType != null || item.dataType != ''">
                <choose>
                    <when test="item.dataType == 'timestamp'">
                        timestamp
                    </when>
                    <when test="item.dataType == 'tinyint'">
                        tinyint
                    </when>
                    <when test="item.dataType == 'smallint'">
                        smallint
                    </when>
                    <when test="item.dataType == 'int'">
                        int
                    </when>
                    <when test="item.dataType == 'bigint'">
                        bigint
                    </when>
                    <when test="item.dataType == 'float'">
                        float
                    </when>
                    <when test="item.dataType == 'double'">
                        double
                    </when>
                    <when test="item.dataType == 'binary'">
                        binary
                    </when>
                    <when test="item.dataType == 'nchar'">
                        nchar
                    </when>
                    <when test="item.dataType == 'bool'">
                        bool
                    </when>
                    <when test="item.dataType == 'json'">
                        json
                    </when>
                </choose>
            </if>
            <if test="item.size != null">
                (#{item.size})
            </if>
        </foreach>
        tags
        <!--tdEngine不支持动态tags里的数据类型，只能使用choose标签比对-->
        <foreach item="item" collection="tagsFields" separator=","
                 open="(" close=")" index="">
            <if test="item.fieldName != null || item.fieldName != ''">
                ${item.fieldName}
            </if>
            <if test="item.dataType != null || item.dataType != ''">
                <choose>
                    <when test="item.dataType == 'timestamp'">
                        timestamp
                    </when>
                    <when test="item.dataType == 'tinyint'">
                        tinyint
                    </when>
                    <when test="item.dataType == 'smallint'">
                        smallint
                    </when>
                    <when test="item.dataType == 'int'">
                        int
                    </when>
                    <when test="item.dataType == 'bigint'">
                        bigint
                    </when>
                    <when test="item.dataType == 'float'">
                        float
                    </when>
                    <when test="item.dataType == 'double'">
                        double
                    </when>
                    <when test="item.dataType == 'binary'">
                        binary
                    </when>
                    <when test="item.dataType == 'nchar'">
                        nchar
                    </when>
                    <when test="item.dataType == 'bool'">
                        bool
                    </when>
                    <when test="item.dataType == 'json'">
                        json
                    </when>
                </choose>
            </if>
            <if test="item.size != null">
                (#{item.size})
            </if>
        </foreach>
    </update>

    <update id="createTable">
        create table
        if not exists #{dataBaseName}.#{tableName}
        using #{dataBaseName}.#{superTableName}
        tags
        <foreach item="item" collection="tagsFieldValues" separator=","
                 open="(" close=")" index="">
            #{item.fieldValue}
        </foreach>
    </update>

    <insert id="insertData">
        insert into #{dataBaseName}.#{tableName}
        <foreach item="item" collection="schemaFieldValues" separator=","
                 open="(" close=")" index="">
            #{item.fieldName}
        </foreach>
        using #{dataBaseName}.#{superTableName}
        tags
        <foreach item="item" collection="tagsFieldValues" separator=","
                 open="(" close=")" index="">
            #{item.fieldValue}
        </foreach>
        values
        <foreach item="item" collection="schemaFieldValues" separator=","
                 open="(" close=")" index="">
            #{item.fieldValue}
        </foreach>
    </insert>


    <select id="selectByTimestamp" parameterType="cn.iocoder.yudao.module.iot.domain.SelectDto"
            resultType="Map">
        select * from #{dataBaseName}.#{tableName}
        <!--查询这里不能使用#{}占位符的方式，使用这种方式，tdEngine不识别为列名，只能使用${}占位的方式-->
        <!--因为tdEngine引擎一次只执行一条sql，所以有效预防了sql的注入，且该服务该接口为内部调用，所以可以使用${}-->
        where ${fieldName}
        between #{startTime} and #{endTime}
    </select>

    <update id="addColumnForSuperTable">
        ALTER
        STABLE
        #{superTableName}
        ADD
        COLUMN
        <if test="fieldsVo.fieldName != null || fieldsVo.fieldName != ''">
            #{fieldsVo.fieldName}
        </if>
        <if test="fieldsVo.dataType != null || fieldsVo.dataType != ''">
            <choose>
                <when test="fieldsVo.dataType == 'timestamp'">
                    timestamp
                </when>
                <when test="fieldsVo.dataType == 'tinyint'">
                    tinyint
                </when>
                <when test="fieldsVo.dataType == 'smallint'">
                    smallint
                </when>
                <when test="fieldsVo.dataType == 'int'">
                    int
                </when>
                <when test="fieldsVo.dataType == 'bigint'">
                    bigint
                </when>
                <when test="fieldsVo.dataType == 'float'">
                    float
                </when>
                <when test="fieldsVo.dataType == 'double'">
                    double
                </when>
                <when test="fieldsVo.dataType == 'binary'">
                    binary
                </when>
                <when test="fieldsVo.dataType == 'nchar'">
                    nchar
                </when>
                <when test="fieldsVo.dataType == 'bool'">
                    bool
                </when>
                <when test="fieldsVo.dataType == 'json'">
                    json
                </when>
            </choose>
        </if>
        <if test="fieldsVo.size != null">
            (
            #{fieldsVo.size}
            )
        </if>
    </update>

    <update id="dropColumnForSuperTable">
        ALTER
        STABLE
        #{superTableName}
        DROP
        COLUMN
        <if test="fieldsVo.fieldName != null || fieldsVo.fieldName != ''">
            #{fieldsVo.fieldName}
        </if>
    </update>

    <update id="addTagForSuperTable">
        ALTER
        STABLE
        #{superTableName}
        ADD
        TAG
        <if test="fieldsVo.fieldName != null || fieldsVo.fieldName != ''">
            #{fieldsVo.fieldName}
        </if>
        <if test="fieldsVo.dataType != null || fieldsVo.dataType != ''">
            <choose>
                <when test="fieldsVo.dataType == 'timestamp'">
                    timestamp
                </when>
                <when test="fieldsVo.dataType == 'tinyint'">
                    tinyint
                </when>
                <when test="fieldsVo.dataType == 'smallint'">
                    smallint
                </when>
                <when test="fieldsVo.dataType == 'int'">
                    int
                </when>
                <when test="fieldsVo.dataType == 'bigint'">
                    bigint
                </when>
                <when test="fieldsVo.dataType == 'float'">
                    float
                </when>
                <when test="fieldsVo.dataType == 'double'">
                    double
                </when>
                <when test="fieldsVo.dataType == 'binary'">
                    binary
                </when>
                <when test="fieldsVo.dataType == 'nchar'">
                    nchar
                </when>
                <when test="fieldsVo.dataType == 'bool'">
                    bool
                </when>
                <when test="fieldsVo.dataType == 'json'">
                    json
                </when>
            </choose>
        </if>
        <if test="fieldsVo.size != null">
            (
            #{fieldsVo.size}
            )
        </if>
    </update>

    <update id="dropTagForSuperTable">
        ALTER
        STABLE
        #{superTableName}
        DROP
        TAG
        <if test="fieldsVo.fieldName != null || fieldsVo.fieldName != ''">
            #{fieldsVo.fieldName}
        </if>
    </update>

    <select id="getCountByTimestamp" parameterType="cn.iocoder.yudao.module.iot.domain.SelectDto"
            resultType="java.util.Map">
        SELECT count(0) AS count
        FROM #{dataBaseName}.#{tableName} WHERE ${fieldName} BETWEEN #{startTime} AND #{endTime}
    </select>

    <select id="checkTableExists" resultType="java.lang.Integer">
        SELECT COUNT(0)
        FROM information_schema.ins_tables
        WHERE db_name = #{dataBaseName}
          AND table_name = #{tableName}
    </select>

    <select id="getLastData" resultType="java.util.Map">
        select last(time), *
        from #{tableName}
        where device_id = #{deviceId}
    </select>

    <select id="getLastDataByTags" parameterType="cn.iocoder.yudao.module.iot.domain.TagsSelectDao"
            resultType="Map">
        select last(*)
        from #{dataBaseName}.#{stableName} group by ${tagsName}
    </select>

    <select id="getHistoryData" resultType="java.util.Map"
            parameterType="cn.iocoder.yudao.module.iot.domain.visual.SelectVisualDto">
        SELECT #{fieldName}, ts
        FROM #{dataBaseName}.#{tableName} WHERE ts BETWEEN #{startTime} AND #{endTime}
        LIMIT #{num}
    </select>
    <select id="getRealtimeData" resultType="java.util.Map"
            parameterType="cn.iocoder.yudao.module.iot.domain.visual.SelectVisualDto">
        SELECT #{fieldName}, ts
        FROM #{dataBaseName}.#{tableName} LIMIT #{num}
    </select>
    <select id="getAggregateData" resultType="java.util.Map"
            parameterType="cn.iocoder.yudao.module.iot.domain.visual.SelectVisualDto">
        SELECT #{aggregate}(${fieldName})
        FROM #{dataBaseName}.#{tableName} WHERE ts BETWEEN #{startTime} AND #{endTime} interval (${interval})
        LIMIT #{num}
    </select>


    <insert id="createSuperTableDevice">
        ${sql}
    </insert>

</mapper>