Maydon.Utilities.Application 1.0.3

Maydon.Utilities

A lightweight and modular collection of reusable utilities, abstractions, and base classes for .NET applications. This project provides the core building blocks for applications following Domain-Driven Design (DDD) principles and modern .NET best practices.

Packages

The toolkit is divided into three focused packages to minimize dependencies:

1. Maydon.Utilities: Core domain foundations (Result pattern, Entity bases, Domain events).
2. Maydon.Utilities.Application: Application layer abstractions (CQRS, Messaging, Decorators).
3. Maydon.Utilities.Persistence: Database infrastructure (Entity Framework Core support, Interceptors).

Features

🏗️ Domain Layer (Maydon.Utilities)

• Result Pattern: Type-safe error handling with Result<T> and Result types.
• Entity Base Classes: Rich entity base class with domain events, audit fields, and soft delete support.
• Domain Events: Event-driven architecture support with IDomainEvent and publication markers.
• Value Objects: Foundational support for DDD value objects.

🚀 Application Layer (Maydon.Utilities.Application)

• CQRS Infrastructure: ICommand, IQuery, and their respective handlers.
• Decorators: Built-in support for Logging and Validation decorators.
• Pagination: Strongly-typed PagedList<T> and query support.

💾 Persistence Layer (Maydon.Utilities.Persistence)

• EF Core Interceptors: Automatic handling of Audit, Soft Delete, and Domain Event publication.
• Database Migrators: Unified interface for applying pending migrations.

Installation

Install the core package via NuGet:

dotnet add package Maydon.Utilities

For application and persistence support:

dotnet add package Maydon.Utilities.Application
dotnet add package Maydon.Utilities.Persistence

Quick Start

Result Pattern

using Maydon.Utilities.Results;

public Result<User> GetUser(Guid id)
{
    var user = _repository.Get(id);
    return user is not null 
        ? user 
        : Result.Failure<User>(Error.NotFound("User.NotFound", "User not found"));
}

Domain Entities

using Maydon.Utilities.Entities;

public class Product : Entity
{
    public string Name { get; set; }
    
    public void UpdateName(string newName)
    {
        Name = newName;
        AddDomainEvent(new NameUpdatedEvent(Id, newName));
    }
}

Requirements

• .NET 10.0 or later

License

This project is licensed under the MIT License - see the LICENSE file for details.