Clean Architecture P7:Create Domain Project

In this article, we'll walk through the process of setting up the domain layer of our application by creating a Visual Studio solution. This domain layer will house the core entities that define our application's business logic. We'll implement this using a clean architecture approach, which ensures that our domain remains independent of external dependencies like data access or UI frameworks.

Creating the Domain Project

Based on the domain discussed during the initial planning stage, we will start by setting up the domain project. The domain will be a part of the Core application, which typically includes all the business logic and core entities of the application. We'll place this domain in a separate project, keeping it independent and focused.

Steps to Create the Domain Project

1. 
   Add a New Class Library Project
   
   
   
   
   • Start by creating a new class library project within your Visual Studio solution.
   
   
   • Navigate to the solution explorer, right-click on the Core folder, and select Add > New Project....
   
   
   • In the project templates, search for "Class Library," choose the C# version, and name the project GloboTicket.TicketManagement.Domain.
     
   
   
   
   

1. 
   Create Domain Entities
   
   
   
   
   • Add the following classes to the Entities folder:
   
   
   
   

   public class AuditableEntity

   {

       public string? CreatedBy { get; set; }

       public DateTime CreatedDate { get; set; }

       public string? LastModifiedBy { get; set; }

       public DateTime? LastModifiedDate { get; set; }

   }

1. 
   Inherit Common Properties
   
   
   
   
   • The Category, Event, and Order entities all inherit from AuditableEntity, which provides common properties like CreatedBy, CreatedDate, LastModifiedBy, and LastModifiedDate. This inheritance allows for easy tracking of who created or modified records.
   
   
   
   

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This article covers the essential steps to set up a domain project using clean architecture principles. The domain project serves as the foundation for your application's business logic, keeping it separate from infrastructure concerns. This separation ensures that your core logic remains independent, flexible, and easy to maintain.