README.md

GodSharp.Data.Common.DbProvider

DbProviderFactory Factory libary for .NET Core.

Supported netstandard1.3 and netstandard2.0.

Getting Started

1. Install Nuget Package.

See here.

2. Add Json Parameters.

You can add to any json file,and then add this file.

Parameters format like below.

{
  "DbConnectionStrings": [
    {
      "name": "mssql",
      "connectionString": "Data Source=localhost;Initial Catalog=Master;User Id=sa;Password=1234;",
      "providerName": "System.Data.SqlClient"
    },
    {
      "name": "mysql",
      "connectionString": "Data Source=localhost;Initial Catalog=user;User Id=root;Password=1234;",
      "providerName": "Pomelo.Data.MySql"
    },
    {
      "name": "sqlite",
      "connectionString": "Data Source=data.db",
      "providerName": "Microsoft.Data.Sqlite"
    },
    {
      "name": "pgsql",
      "connectionString": "Host=localhost;Database=postgres;Username=postgres;Password=1234;",
      "providerName": "Npgsql"
    }
  ],
  "DbProviderFactories": [
    {
      "name": "SqlClient Data Provider",
      "invariant": "System.Data.SqlClient",
      "description": ".Net Framework Data Provider for SqlServer",
      "type": "System.Data.SqlClient.SqlClientFactory, System.Data.SqlClient"
    },
    {
      "name": "MySQL Data Provider by Pomelo",
      "invariant": "Pomelo.Data.MySql",
      "description": ".Net Framework Data Provider for MySql",
      "type": "Pomelo.Data.MySql.MySqlClientFactory, Pomelo.Data.MySql"
    },
    {
      "name": "SQLite Data Provider",
      "invariant": "Microsoft.Data.Sqlite",
      "description": ".Net Framework Data Provider for SQLite",
      "type": "Microsoft.Data.Sqlite.SqliteFactory, Microsoft.Data.Sqlite"
    },
    {
      "name": "Npgsql Data Provider",
      "invariant": "Npgsql",
      "description": ".Net Framework Data Provider for PostgreSql",
      "type": "Npgsql.NpgsqlFactory, Npgsql"
    }
  ]
}

Tips:DbConnectionStrings section is not required,but I strongly recommend you add this.

3. Load DbProviders and DbConnectionStrings[option].

var builder = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
// add json file
.AddJsonFile("db.provider.json");

var config = builder.Build();

// Load DbProviders and DbConnectionStrings
DbProviderManager.LoadConfiguration(config);

4. Get DbConnectionString.

DbConnectionStringSetting conn = DbConnectionStringManager.ConnectionStrings["sqlite"];

5. Get DbConnectionFactory.

DbProviderFactory factory = DbProviderFactories.GetFactory(conn.ProviderName);

6. Use DbProviderFactory create IDbConnection and other.

Create IDbConnection

IDbConnection db = factory.CreateConnection();

Use IDbConnection.

db.ConnectionString = conn.ConnectionString;
db.Open();

var cmd = db.CreateCommand();
cmd.CommandText = "select datetime('now');";
var dt = cmd.ExecuteScalar();
System.Console.WriteLine(dt);

db.Close();

You can see the full code in test.