DDDCore
This is a Framework designed to give us the Core of DDD to .Net. This Framework is using .Net Standard 2.
Articles about this Framework
How to Build a good one Value Object.
What is Domain Services? How to use it?.
Videos (English)
DDD Course - Class 00 - Overview - NetCore C#.
Videos (Portuguese)
DDD Course - Class 00 - Overview - NetCore C#.
DDD Course - Class 01 - Modeling Best Practices.
Documentation (Wiki)
Features
DomainDrivenDesign.Core
- Entity
- Value Object
- Value Object Validations
- Event
- Raise Events (Mediator)
DomainDrivenDesign.Core.CQRS
- Commands
- Queries
- MediatirCQRS to dispatch Commands and Queries
DomainDrivenDesign.Core.EventSourcing (Under development)
Nuget Packages
Installation
You can install using nuget Package Manager
Install-Package DomainDrivenDesign.Core -Version 0.1.3
Install-Package DomainDrivenDesign.Core.CQRS -Version 0.0.1
Or using .Net Cli
dotnet add package DomainDrivenDesign.Core --version 0.1.3
dotnet add package DomainDrivenDesign.Core.CQRS --version 0.0.1
Technologies used:
- Railway.NetCore
Usage
You can use Value Object like this one:
Money
using DomainDrivenDesign.Core.Models;
using Railway.NetCore.Core;
using System;
using System.Collections.Generic;
using System.Text;
public class Money : ValueObject<Money>
{
protected Money(Decimal amount, string currencyCode)
{
this.CheckRule(new CurrencyShouldBeSpecified(currencyCode));
this.Amount = amount;
this.Currency = currency;
}
protected Money(Decimal amount, Currency currency)
{
this.CheckRule(new AmountShouldBePositive(amount));
this.Amount = amount;
this.Currency = currency;
}
public static Money FromDecimal(
decimal amount,
string currency)
=> new Money(amount, currency);
public decimal ToDecimal()
=> Amount;
protected override IEnumerable<object> GetEqualityComponents()
{
yield return Amount;
yield return Currency;
}
public Decimal Amount { get; }
public String Currency { get; }
}CurrencyShouldBeSpecified.cs
using DomainDrivenDesign.Core.Interfaces;
using System;
using System.Collections.Generic;
using System.Text;
public class CurrencyShouldBeSpecified : IValidationRule
{
private readonly string _value;
internal CurrencyShouldBeSpecified(string value)
{
this._value = value;
}
public string Message => "Currency code must be specified";
public bool IsBroken()
{
return (string.IsNullOrEmpty(_value));
}
}Also, you can use Entity Object.
Payment.cs Entity Sample
using DomainDrivenDesign.Core.Models;
using Railway.NetCore.Core;
using System;
using System.Collections.Generic;
using System.Text;
public class Payment : Entity
{
public Card Card { get; protected set; }
public Money Amount { get; protected set; }
public string BeneficiaryAlias { get; protected set; }
public DateTime CreatedOn { get; protected set; }
public static Result<Payment> CreateNewCardPayment(Card card, Money amount, string beneficiaryAlias)
{
return Result.Success(new Payment(card, amount, beneficiaryAlias));
}
private Payment(Card card, Money amount, string beneficiaryAlias) : base()
{
this.Card = card;
this.Amount = amount;
this.BeneficiaryAlias = beneficiaryAlias;
this.CreatedOn = DateTime.Now;
}
}Soon Mediator, Command, Query and Handlers samples. If you wish you can see this samples on Sample Project.
License
MIT
