# Maikebing.EntityFrameworkCore.Taos **Repository Path**: defineandroidc/Maikebing.EntityFrameworkCore.Taos ## Basic Information - **Project Name**: Maikebing.EntityFrameworkCore.Taos - **Description**: Maikebing.Data.Taos 是一个 TDengine 的ADO.Net 和EFCore的 提供器。 这将允许你通过.Net Core 访问TDengine数据库。Entity, Framework, EF, Core, Data, O/RM, entity-framework-core,TDengine - **Primary Language**: C# - **License**: MIT - **Default Branch**: master - **Homepage**: None - **GVP Project**: No ## Statistics - **Stars**: 0 - **Forks**: 24 - **Created**: 2021-11-06 - **Last Updated**: 2021-11-06 ## Categories & Tags **Categories**: Uncategorized **Tags**: None ## README # Maikebing.EntityFrameworkCore.Taos ## 项目简介 Entity, Framework, EF, Core, Data, O/RM, entity-framework-core,TDengine -- Maikebing.Data.Taos 是一个采用TDengine的原生动态库构建的ADO.Net提供程序。 它将允许你通过.Net Core 访问TDengine 数据库。 --- Maikebing.EntityFrameworkCore.Taos 是一个Entity Framework Core 的提供器， 基于Maikebing.Data.Taos实现。 --- [![Build status](https://ci.appveyor.com/api/projects/status/8krjmvsoiilo2r10?svg=true)](https://ci.appveyor.com/project/MaiKeBing/maikebing-entityframeworkcore-taos) [![License](https://img.shields.io/github/license/maikebing/Maikebing.EntityFrameworkCore.Taos.svg)](https://github.com/maikebing/Maikebing.EntityFrameworkCore.Taos/blob/master/LICENSE) | NuGet名称 | 版本|下载量| 说明 | | ----------- | -------- | -------- | ------------------------------------------------------------ | | Maikebing.Data.Taos |[![Maikebing.Data.Taos](https://img.shields.io/nuget/v/Maikebing.Data.Taos.svg)](https://www.nuget.org/packages/Maikebing.Data.Taos/) |![Nuget](https://img.shields.io/nuget/dt/Maikebing.Data.Taos) |ADO.Net Core 基础组件 | Maikebing.EntityFrameworkCore.Taos |[![Maikebing.EntityFrameworkCore.Taos](https://img.shields.io/nuget/v/Maikebing.EntityFrameworkCore.Taos.svg)](https://www.nuget.org/packages/Maikebing.EntityFrameworkCore.Taos/) |![Nuget](https://img.shields.io/nuget/dt/Maikebing.EntityFrameworkCore.Taos) | 供EF Core使用的组件 | Maikebing.HealthChecks.Taos |[![Maikebing.HealthChecks.Taos](https://img.shields.io/nuget/v/Maikebing.HealthChecks.Taos.svg)](https://www.nuget.org/packages/Maikebing.HealthChecks.Taos/) | ![Nuget](https://img.shields.io/nuget/dt/Maikebing.HealthChecks.Taos)| 供Asp.Net Core 使用的健康检查组件 --- [TDengine技术开放日 — 从技术创新和设计思想，认识TDengine](https://live.photoplus.cn/live/pc/38916035/#/live) ![荣誉证书](docs/taos_ch_600.png) ## 如何使用？ 例子: ![Example](docs/Example.png) ```csharp ///Specify the name of the database string database = "db_" + DateTime.Now.ToString("yyyyMMddHHmmss"); string database = "db_" + DateTime.Now.ToString("yyyyMMddHHmmss"); var builder = new TaosConnectionStringBuilder() { DataSource = "127.0.0.1", DataBase = database, Username = "root", Password = "kissme", Port=6060 }; //Example for ADO.Net using (var connection = new TaosConnection(builder.ConnectionString)) { connection.Open(); Console.WriteLine("create {0} {1}", database, connection.CreateCommand($"create database {database};").ExecuteNonQuery()); Console.WriteLine("create table t {0} {1}", database, connection.CreateCommand($"create table {database}.t (ts timestamp, cdata int);").ExecuteNonQuery()); Console.WriteLine("insert into t values {0} ", connection.CreateCommand($"insert into {database}.t values ('{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.ms")}', 10);").ExecuteNonQuery()); Console.WriteLine("insert into t values {0} ", connection.CreateCommand($"insert into {database}.t values ('{DateTime.Now.AddMonths(1).ToString("yyyy-MM-dd HH:mm:ss.ms")}', 20);").ExecuteNonQuery()); var cmd_select = connection.CreateCommand(); cmd_select.CommandText = $"select * from {database}.t"; var reader = cmd_select.ExecuteReader(); Console.WriteLine(cmd_select.CommandText); Console.WriteLine(""); ConsoleTableBuilder.From(reader.ToDataTable()).WithFormat(ConsoleTableBuilderFormat.MarkDown).ExportAndWriteLine(); Console.WriteLine(""); Console.WriteLine("DROP TABLE {0} {1}", database, connection.CreateCommand($"DROP TABLE {database}.t;").ExecuteNonQuery()); Console.WriteLine("DROP DATABASE {0} {1}", database, connection.CreateCommand($"DROP DATABASE {database};").ExecuteNonQuery()); connection.Close(); } //Example for Entity Framework Core using (var context = new TaosContext(new DbContextOptionsBuilder() .UseTaos(builder.ConnectionString).Options)) { Console.WriteLine("EnsureCreated"); context.Database.EnsureCreated(); for (int i = 0; i < 10; i++) { var rd = new Random(); context.sensor.Add(new sensor() { ts = DateTime.Now.AddMilliseconds(i), degree = rd.NextDouble(), pm25 = rd.Next(0, 1000) }); } Console.WriteLine("Saveing"); context.SaveChanges(); Console.WriteLine(""); Console.WriteLine("from s in context.sensor where s.pm25 > 0 select s "); Console.WriteLine(""); var f = from s in context.sensor where s.pm25 > 0 select s; var ary = f.ToArray(); ConsoleTableBuilder.From(ary.ToList()).WithFormat(ConsoleTableBuilderFormat.MarkDown).ExportAndWriteLine(); context.Database.EnsureDeleted(); } Console.WriteLine(""); Console.WriteLine("Pass any key to exit...."); Console.ReadKey(); ``` 用于物联网的超级表示例: [IoTSharp/Storage/TaosStorage.cs](https://github.com/IoTSharp/IoTSharp/blob/master/IoTSharp/Storage/TaosStorage.cs) ``` using (var connection = new TaosConnection(builder.ConnectionString)) { connection.Open(); Console.WriteLine("ServerVersion:{0}", connection.ServerVersion); connection.CreateCommand("DROP DATABASE IF EXISTS IoTSharp").ExecuteNonQuery(); connection.CreateCommand("CREATE DATABASE IoTSharp KEEP 365 DAYS 10 BLOCKS 4;").ExecuteNonQuery(); connection.ChangeDatabase("IoTSharp"); connection.CreateCommand("CREATE TABLE IF NOT EXISTS telemetrydata (ts timestamp,value_type tinyint, value_boolean bool, value_string binary(10240), value_long bigint,value_datetime timestamp,value_double double) TAGS (deviceid binary(32),keyname binary(64));").ExecuteNonQuery(); //connection.CreateCommand($"CREATE TABLE dev_Thermometer USING telemetrydata TAGS (\"Temperature\")").ExecuteNonQuery(); var devid = $"{Guid.NewGuid():N}"; UploadTelemetryData(connection, devid, "Temperature", 999); UploadTelemetryData(connection,devid, "Humidity", 888); var devid2 = $"{Guid.NewGuid():N}"; UploadTelemetryData(connection, devid2, "Temperature", 777); UploadTelemetryData(connection, devid2, "Humidity", 666); var reader2 = connection.CreateCommand("select last_row(*) from telemetrydata group by deviceid,keyname ;").ExecuteReader(); ConsoleTableBuilder.From(reader2.ToDataTable()).WithFormat(ConsoleTableBuilderFormat.Default).ExportAndWriteLine(); connection.Close(); } static void UploadTelemetryData( TaosConnection connection, string devid, string keyname, int count) { for (int i = 0; i < count; i++) { connection.CreateCommand($"INSERT INTO device_{devid}_{keyname} USING telemetrydata TAGS(\"{devid}\",\"{keyname}\") (ts,value_type,value_long) values (now,2,{i});").ExecuteNonQuery(); } } ```