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https://github.com/iotsharp/entityframeworkcore.taos
EntityFramework, EF Core, ADO.NET, ORM,Stmt,TDengine
https://github.com/iotsharp/entityframeworkcore.taos
database ef entity-framework entity-framework-core orm schemaless stmt taos taosdata tdengine
Last synced: 7 days ago
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EntityFramework, EF Core, ADO.NET, ORM,Stmt,TDengine
- Host: GitHub
- URL: https://github.com/iotsharp/entityframeworkcore.taos
- Owner: IoTSharp
- License: mit
- Created: 2019-07-16T15:27:15.000Z (over 5 years ago)
- Default Branch: master
- Last Pushed: 2024-10-22T06:13:46.000Z (22 days ago)
- Last Synced: 2024-10-30T17:15:45.636Z (13 days ago)
- Topics: database, ef, entity-framework, entity-framework-core, orm, schemaless, stmt, taos, taosdata, tdengine
- Language: C#
- Homepage:
- Size: 18.8 MB
- Stars: 170
- Watchers: 27
- Forks: 30
- Open Issues: 8
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# IoTSharp.EntityFrameworkCore.Taos
## 项目简介
ADO.Net Entity, Framework, EF, Core, Data, O/RM, entity-framework-core,TDengine
--
IoTSharp.Data.Taos 是 TDengine的ADO.Net提供程序。 它将允许你通过原生动态库、WebSocket、RESTful 三种协议访问TDengine，通过 Schemaless 完美实现了ExecuteBulkInsert批量插入、Stmt 实现了参数化执行。
连接协议说明
---
| 协议 | 使用|依赖| 说明 |
| ----------|--- | -------- | ------------------------------------------------------------ |
| WebSocket |builder.UseWebSocket()|无依赖 | 纯C#实现， 支持 Schemaless 和 Stmt参数化
| Cloud DSN |builder_cloud.UseCloud_DSN()|无依赖 | 纯C#实现， 支持 Schemaless 和 Stmt参数化
| Native | builder.UseNative()|libtaos | 原生协议， 支持3.0.x libtaos 动态库，支持 Schemaless 和 Stmt参数化。使用前必须安装 TDengine-client
| RESTful | builder.UseRESTful() |无依赖| 纯C#实现， 不支持 Schemaless 和 Stmt参数化
连接字符串示例
---
| 连接方式 | 示例 |
| ----------| ------------------------------------------------------------ |
| TDengine云服务 | Data Source=gw.us-east.azure.cloud.tdengine.com;DataBase=iotsharp;Username=root;Password=taosdata;Port=80;PoolSize=20;Protocol=WebSocket;Token=4592d868d1b57c812edb3d8c11b4bbd1ffc747c0
| 使用原生库libtaos |Data Source=DEVPER;DataBase=db_20230301123636;Username=root;Password=taosdata;Port=6030;PoolSize=20;Protocol=Native
| 使用 Http RESTful |Data Source=DEVPER;DataBase=db_20230301123636;Username=root;Password=taosdata;Port=6041;PoolSize=20;Protocol=RESTful
| 使用 WebSocket |Data Source=DEVPER;DataBase=db_20230301123636;Username=root;Password=taosdata;Port=6041;PoolSize=20;Protocol=WebSocket
## Schemaless
通过 Schemaless 实现的 ExecuteBulkInsert 支持 TSDB_SML_LINE_PROTOCOL 和TSDB_SML_JSON_PROTOCOL 。
透过TSDB_SML_JSON_PROTOCOL也支持了InfluxDB Client中的 RecordData 的数据写法。
RecordData示例
```c#
var rec= RecordData.table("meters").Tag("location", "Beijing.Haidian").Tag("groupid", "2").Timestamp(DateTime.Now.ToUniversalTime(), TimePrecision.Ms)
.Field("current", 12.1).Field("voltage", 234.0).Field("phase",0.33);
int result = connection.ExecuteBulkInsert(rec);
```
IoTSharp.EntityFrameworkCore.Taos 是一个Entity Framework Core 的提供器， 基于IoTSharp.Data.Taos实现。
(原名称为 Maikebing.EntityFrameworkCore.Taos)
---
[](https://ci.appveyor.com/project/iotsharp/entityframeworkcore-taos)
[](https://github.com/IoTSharp/EntityFrameworkCore.Taos/blob/master/LICENSE)
| NuGet名称 | 版本|下载量| 说明 |
| ----------- | -------- | -------- | ------------------------------------------------------------ |
| IoTSharp.Data.Taos |[](https://www.nuget.org/packages/IoTSharp.Data.Taos/) | |ADO.Net Core 基础组件
| IoTSharp.EntityFrameworkCore.Taos |[](https://www.nuget.org/packages/IoTSharp.EntityFrameworkCore.Taos/) | | 供EF Core使用的组件
| IoTSharp.HealthChecks.Taos |[](https://www.nuget.org/packages/IoTSharp.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)
## 如何使用？
### 基本示例:
```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($"DROP DATABASE {database};").ExecuteNonQuery());
connection.Close();
}
//Example for Entity Framework Core
using (var context = new TaosContext(new DbContextOptionsBuilder()
.UseTaos(builder.ConnectionString).Options))
{
Console.WriteLine("EnsureCreated");
context.Database.EnsureCreated();
for (int i = 0; i < 10; i++)
{
var rd = new Random();
context.sensor.Add(new sensor() { ts = DateTime.Now.AddMilliseconds(i), degree = rd.NextDouble(), pm25 = rd.Next(0, 1000) });
}
Console.WriteLine("Saving");
context.SaveChanges();
Console.WriteLine("");
Console.WriteLine("from s in context.sensor where s.pm25 > 0 select s ");
Console.WriteLine("");
var f = from s in context.sensor where s.pm25 > 0 select s;
var ary = f.ToArray();
ConsoleTableBuilder.From(ary.ToList()).WithFormat(ConsoleTableBuilderFormat.MarkDown).ExportAndWriteLine();
context.Database.EnsureDeleted();
}
Console.WriteLine("");
Console.WriteLine("Pass any key to exit....");
Console.ReadKey();
```
### 用于物联网的超级表示例:
[IoTSharp/Storage/TaosStorage.cs](https://github.com/IoTSharp/IoTSharp/blob/master/IoTSharp/Storage/TaosStorage.cs)
```c#
using (var connection = new TaosConnection(builder.ConnectionString))
{
connection.Open();
Console.WriteLine("ServerVersion:{0}", connection.ServerVersion);
connection.CreateCommand("DROP DATABASE IF EXISTS IoTSharp").ExecuteNonQuery();
connection.CreateCommand("CREATE DATABASE IoTSharp KEEP 365 DAYS 10 BLOCKS 4;").ExecuteNonQuery();
connection.ChangeDatabase("IoTSharp");
connection.CreateCommand("CREATE TABLE IF NOT EXISTS telemetrydata (ts timestamp,value_type tinyint, value_boolean bool, value_string binary(10240), value_long bigint,value_datetime timestamp,value_double double) TAGS (deviceid binary(32),keyname binary(64));").ExecuteNonQuery();
//connection.CreateCommand($"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();
}
}
```