🚀 AdaskoTheBeAsT.Identity.Dapper

Compile-time ASP.NET Core Identity stores for Dapper.

If you like ASP.NET Core Identity but do not want EF Core in the store layer, this repository gives you source-generated stores and SQL for SQL Server, PostgreSQL, MySQL, Oracle, and SQLite.

✨ Why developers like it

• ⚡ Fast runtime path powered by Dapper
• 🧠 Source-generated stores and provider-specific SQL instead of hand-written plumbing
• 🧩 Works with string, int, long, and Guid keys
• 🏗️ Supports custom Identity properties and custom column names
• 🗄️ Covers SQL Server, PostgreSQL, MySQL, Oracle, and SQLite
• 🎛️ Lets you skip normalized columns when you do not need them
• 🧪 Backed by provider-specific unit and integration tests

🗄️ Supported providers

Provider	NuGet package	Default schema	Extra startup step
SQL Server	AdaskoTheBeAsT.Identity.Dapper.SqlServer	dbo	none
PostgreSQL	AdaskoTheBeAsT.Identity.Dapper.PostgreSql	public	PostgreSqlDapperConfig.ConfigureTypeHandlers();
MySQL	AdaskoTheBeAsT.Identity.Dapper.MySql	n/a	MySqlDapperConfig.ConfigureTypeHandlers();
Oracle	AdaskoTheBeAsT.Identity.Dapper.Oracle	empty by default	OracleDapperConfig.ConfigureTypeHandlers();
SQLite	AdaskoTheBeAsT.Identity.Dapper.Sqlite	n/a	SQLitePCL.Batteries.Init(); and SqliteDapperConfig.ConfigureTypeHandlers();

The shared runtime package is AdaskoTheBeAsT.Identity.Dapper; most applications install a provider package and let that pull in the core runtime.

⚡ Quick start

1. Install the provider package you need

# SQL Server
dotnet add package AdaskoTheBeAsT.Identity.Dapper.SqlServer

# PostgreSQL
dotnet add package AdaskoTheBeAsT.Identity.Dapper.PostgreSql

# MySQL
dotnet add package AdaskoTheBeAsT.Identity.Dapper.MySql

# Oracle
dotnet add package AdaskoTheBeAsT.Identity.Dapper.Oracle

# SQLite
dotnet add package AdaskoTheBeAsT.Identity.Dapper.Sqlite

2. Define your Identity types

using System.ComponentModel.DataAnnotations.Schema;
using AdaskoTheBeAsT.Identity.Dapper.Attributes;
using Microsoft.AspNetCore.Identity;

namespace MyApp.Identity;

public sealed class ApplicationRole : IdentityRole<Guid>
{
}

public sealed class ApplicationRoleClaim : IdentityRoleClaim<Guid>
{
}

[InsertOwnId]
public sealed class ApplicationUser : IdentityUser<Guid>
{
    [Column("IsActive")]
    public bool IsActive { get; set; }
}

public sealed class ApplicationUserClaim : IdentityUserClaim<Guid>
{
}

public sealed class ApplicationUserLogin : IdentityUserLogin<Guid>
{
}

public sealed class ApplicationUserRole : IdentityUserRole<Guid>
{
}

public sealed class ApplicationUserToken : IdentityUserToken<Guid>
{
}

[InsertOwnId] is optional and useful when you want to keep external identity IDs unchanged.

3. Add optional MSBuild settings

Provider packages already ship sensible defaults. Add overrides only when you need them:

<PropertyGroup>
  <EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles>
  <CompilerGeneratedFilesOutputPath>Generated</CompilerGeneratedFilesOutputPath>
  <AdaskoTheBeAsTIdentityDapper_SkipNormalized>false</AdaskoTheBeAsTIdentityDapper_SkipNormalized>
  <AdaskoTheBeAsTIdentityDapper_DbSchema>dbo</AdaskoTheBeAsTIdentityDapper_DbSchema>
</PropertyGroup>

4. Register the connection provider and Identity stores

The example below uses SQL Server, but the pattern is the same for other providers.

using AdaskoTheBeAsT.Identity.Dapper.Abstractions;
using Microsoft.AspNetCore.Identity;
using Microsoft.Data.SqlClient;

builder.Services.AddSingleton<IIdentityDbConnectionProvider<SqlConnection>, IdentityDbConnectionProvider>();

builder.Services.AddIdentity<ApplicationUser, ApplicationRole>()
    .AddUserStore<ApplicationUserStore>()
    .AddRoleStore<ApplicationRoleStore>()
    .AddDefaultTokenProviders();

public sealed class IdentityDbConnectionProvider : IIdentityDbConnectionProvider<SqlConnection>
{
    private readonly IConfiguration _configuration;

    public IdentityDbConnectionProvider(IConfiguration configuration)
    {
        _configuration = configuration;
    }

    public SqlConnection Provide() => new(_configuration.GetConnectionString("DefaultConnection")!);
}

ApplicationUserStore, ApplicationUserOnlyStore, and ApplicationRoleStore are generated during build.

5. Build once to generate the stores

dotnet build

If EmitCompilerGeneratedFiles is enabled, generated files are written to the folder configured by CompilerGeneratedFilesOutputPath.

6. Create the database schema

This library generates store code and SQL access logic, but it does not create your database schema for you.

Use the scripts in db/:

• db/SqlServer/ contains SSDT-style .sqlproj schema projects
• db/PostgreSQL/, db/MySql/, db/Oracle/, and db/SQLite/ contain SQL scripts
• scripts are available for string, int, bigint, and Guid keys
• each provider includes normalized and WithoutNormalized... variants

⚙️ Configuration reference

Property	Default	Applies to	What it changes
EmitCompilerGeneratedFiles	false	all providers	writes generated code to disk
CompilerGeneratedFilesOutputPath	Generated	all providers	changes the generated output folder
AdaskoTheBeAsTIdentityDapper_SkipNormalized	false	all providers	skips normalized role and user columns
AdaskoTheBeAsTIdentityDapper_DbSchema	dbo / public / empty	SQL Server, PostgreSQL, Oracle	changes the schema prefix used by generated SQL
AdaskoTheBeAsTIdentityDapper_StoreBooleanAs	char	Oracle only	stores booleans as char, number, or string

Provider notes

• PostgreSQL: call PostgreSqlDapperConfig.ConfigureTypeHandlers();
• MySQL: call MySqlDapperConfig.ConfigureTypeHandlers();
• Oracle: call OracleDapperConfig.ConfigureTypeHandlers();
• SQLite: call SQLitePCL.Batteries.Init(); and SqliteDapperConfig.ConfigureTypeHandlers();

📚 Examples and useful docs

• samples/Sample.SqlServer2 — SQL Server sample that consumes the NuGet packages
• samples/Sample.SqlServer — SQL Server sample that references local projects
• src/AdaskoTheBeAsT.Identity.Dapper.WebApi — runnable Web API example
• samples/OracleConsoleApp/PrepareOracleDb.txt — Oracle prep notes
• db/ — provider schema scripts and SQL Server schema projects

🛠️ Local development

Prerequisites

• .NET SDK 10.0.201 (pinned in global.json)
• Docker Desktop / Docker Engine for integration tests
• PowerShell for clean.ps1
• Visual Studio + SSDT if you need to edit SQL Server .sqlproj database projects

Handy commands

# restore everything
dotnet restore AdaskoTheBeAsT.Identity.Dapper.sln

# recommended filtered build loop
dotnet build WithoutSqlDb.slnf

# focused MySQL loop
dotnet build MySQL.slnf

# run the Web API sample
dotnet run --project src/AdaskoTheBeAsT.Identity.Dapper.WebApi/AdaskoTheBeAsT.Identity.Dapper.WebApi.csproj

# run a provider unit snapshot test project
dotnet test test/unit/AdaskoTheBeAsT.Identity.Dapper.PostgreSql.Test/AdaskoTheBeAsT.Identity.Dapper.PostgreSql.Test.csproj

# run a provider integration test project (Docker required)
dotnet test test/integ/AdaskoTheBeAsT.Identity.Dapper.Sqlite.IntegrationTest/AdaskoTheBeAsT.Identity.Dapper.Sqlite.IntegrationTest.csproj

# clean bin/obj folders
pwsh ./clean.ps1

🧭 Repository map

src/
  AdaskoTheBeAsT.Identity.Dapper/            shared runtime abstractions and base store types
  AdaskoTheBeAsT.Identity.Dapper.SqlServer/  SQL Server source generator package
  AdaskoTheBeAsT.Identity.Dapper.PostgreSql/ PostgreSQL source generator package
  AdaskoTheBeAsT.Identity.Dapper.MySql/      MySQL source generator package
  AdaskoTheBeAsT.Identity.Dapper.Oracle/     Oracle source generator package
  AdaskoTheBeAsT.Identity.Dapper.Sqlite/     SQLite source generator package
  AdaskoTheBeAsT.Identity.Dapper.WebApi/     runnable example app

db/        schema scripts and SQL Server schema projects
samples/   consumer samples and provider-specific notes
test/      provider unit snapshot tests and integration tests

🤝 Contributing

Pull requests are welcome. A good contributor loop is:

1. build the relevant solution filter (WithoutSqlDb.slnf or MySQL.slnf)
2. run the provider test project you touched
3. keep generated SQL and snapshots aligned with the implementation

📄 License

This project is licensed under the MIT License.

💬 Support

• Issues: https://github.com/AdaskoTheBeAsT/AdaskoTheBeAsT.Identity.Dapper/issues
• NuGet: https://www.nuget.org/packages/AdaskoTheBeAsT.Identity.Dapper/

If this library saves you time, a GitHub star is always appreciated.