Salvini.IoTDB 2.13.1110

dotnet add package Salvini.IoTDB --version 2.13.1110                
NuGet\Install-Package Salvini.IoTDB -Version 2.13.1110                
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Salvini.IoTDB" Version="2.13.1110" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Salvini.IoTDB --version 2.13.1110                
#r "nuget: Salvini.IoTDB, 2.13.1110"                
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install Salvini.IoTDB as a Cake Addin
#addin nuget:?package=Salvini.IoTDB&version=2.13.1110

// Install Salvini.IoTDB as a Cake Tool
#tool nuget:?package=Salvini.IoTDB&version=2.13.1110                

Apache IoTDB Client - just like PI or eDNA

IoTDB C# 客户端,提供 PI\eDNA 类似的访问接口,与原生的 session 完全不同,比较适用于有传统实时历史数据库操作经验者。

以前,有封装 MongoDB 提供类似的实时历史数据库访问,但应用场景更多是注重历史性能,接触 IoTDB 之后果断放弃 MongoDB,完全兼顾实时历史性能。

提示:0.13 进行了 SQL 语法的改动,不使用反引号括起的标识符中仅能包含如下字符,否则需要使用反引号括起。 [0-9 a-z A-Z _ : @ # $ { }] (字母,数字,部分特殊字符)

只能呵呵了, 不知道是想什么呢, 竟然修改 path 的规则, 要知道查询数据完全依赖SQL, 升级时竟然还对点名 path 进行规则修改!!! 怎么想的呢???

想想看, 还是对 session 封装之后比较好, 不对上层暴露 SQL 查询, 谁知道以后 SQL 还有哪些不兼容呢, 那些上层业务要敢升级数据库...被玩死算了

Apache-IoTDB-Client-CSharp

这是最接近官方的 Apache IoTDB Client - C#版客户端,完全原生接口。由于不太符合本人的使用习惯,故提供此库。

IoTDB-SQL 着实令人恼火,其内部人员还美其名曰要走自己的路形成规范,学生啊太自信了,而本身就没规范可言,如 where 和 group by 语义冲突...

期盼:iotdb server 端可以支持 plot 查询(降采样,但保留特征值的趋势曲线,如果能做到 1 秒查询 1 周趋势就厉害了!)

Apache Thrift ™

thrif-0.16.0.exe -r -gen netstd rpc.thrift

TimeSeries Client

  • 采用 Apache IoTDB 时许数据库,提供类似 PI、eDNA 传统实时历史数据库访问 API
  • 采用 MongoDB 连接字符串格式,如 iotdb://root:admin#123@127.0.0.1:6667/database=dbname&fetchSize=1800&poolSize=8

关键概念

Name Description
快照值 snapshot 测点的最新值,时间戳不一定相同
原始值 raw/archive 被记录的测点值,由传感器真实采集而来
历史值 history/timed 原始值相比,给定时间必然有数值,但不一定是设备实际采集而来,可通过取值规则决定。
绘图值 plot 趋势绘图值,能够真实反映测点的历史趋势曲线,根据显示像素 px 划分区间降采样,不丢失特征值(极值)。

调用样例

using Salvini.IoTDB;

class Program
{
    static async Task Main(string[] args)
    {
        var start = new DateTime(2022, 8, 4).AddHours(14);
        var end = new DateTime(2022, 8, 4).AddHours(15);
        using var client = TimeSeriesClient.CreateInstance("iotdb://root:admin#123@127.0.0.1:6667/database=mydb1");  
        var archive = await client.HistoryAsync(new List<string> { "RATE_PV" },start ,end, 4);
    }
}

Version 2.13.1110

  • 解决 TimeSeriesClient 实例化时控制台输出 Version 错误BUG
  • 增加 DataToCsvAsync 方法,支持将数据导出至 CSV 文件,注意:按 History 方式导出数据

Version 2.13.985

  • 增强 BulkWriteAsync 实现,支持大数据写入

Version 2.13.980

  • 增加 BulkWriteAsync 重载
  • 增加 Vision 属性,显示服务端版本号
  • 解决测点名带有(-)连字符问题(path不完全兼容,0.13版以后要使用(`)反引号括起来非法点名)

Version 2.13.970.817

  • 实现ArchiveAsync批量数据查询功能
  • 解决HistoryAsync批量查询时测点与数据不对应的BUG

Version 2.13.970.0

  • 解决 InitializeAsync 无法更新测点信息 BUG
  • 去掉对 ApacheIoTDB 访问接口的直接公开(原生 session 接口),仅公开 TimeSeriesClient 对象
Product Compatible and additional computed target framework versions.
.NET net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (1)

Showing the top 1 NuGet packages that depend on Salvini.IoTDB:

Package Downloads
Salvini.TimeSeries.Client

时序数据库访问封装,支持MongoDB和Apache/IoTDB

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
2.13.1110 520 11/10/2022 2.13.1110 is deprecated because it is no longer maintained and has critical bugs.
2.13.985 532 9/16/2022 2.13.985 is deprecated because it is no longer maintained and has critical bugs.
2.13.980 518 8/18/2022 2.13.980 is deprecated because it is no longer maintained and has critical bugs.
2.13.970.817 526 8/16/2022 2.13.970.817 is deprecated because it is no longer maintained and has critical bugs.
2.13.970 534 8/10/2022 2.13.970 is deprecated because it is no longer maintained and has critical bugs.
2.13.960.810 583 8/10/2022 2.13.960.810 is deprecated because it is no longer maintained and has critical bugs.
2.13.960.807 569 8/6/2022 2.13.960.807 is deprecated because it is no longer maintained and has critical bugs.
2.13.960.806 575 8/6/2022 2.13.960.806 is deprecated because it is no longer maintained and has critical bugs.
2.13.960 553 8/5/2022 2.13.960 is deprecated because it is no longer maintained and has critical bugs.
1.13.760.1 1,819 5/5/2022 1.13.760.1 is deprecated because it is no longer maintained and has critical bugs.
1.13.760 539 4/28/2022 1.13.760 is deprecated because it is no longer maintained and has critical bugs.
1.0.23.310 299 3/10/2023 1.0.23.310 is deprecated because it is no longer maintained and has critical bugs.
1.0.23.306 292 3/6/2023 1.0.23.306 is deprecated because it is no longer maintained and has critical bugs.
1.0.23.216 285 2/16/2023 1.0.23.216 is deprecated because it is no longer maintained and has critical bugs.