I am using GraphQL as a part of my CQRS application.
I have separated Command and Query domain model into two different projects (Query and Command).
each of there projects has some models for instance Student model.
I use two different model in Domain.Query.Students.Student and Domain.Command.Students.Student, but both have the same entity name (Student and Address)
I simplified my entity as below:
public class Student:Entity
{
public string FirstName { get; set; }
public string LastName { get; set; }
public Address Address { get; set; }
public DateTimeOffset CreatedOn { get; set; }
public DateTimeOffset ModifiedOn { get; set; }
}
Student is being used in Query and Command projects.
in Startup.cs I have configured GraphQL like this:
services
.AddGraphQLServer()
.AddQueryType<StudentQuery>()
.AddMutationType<AddStudentMutation>();
In StudentQuery.cs
namespace GraphQL.Query.Students
{
public class StudentQuery
{
public List<Student> AllStudents([ScopedService] StudentRepository studentRepository)
{
var query = studentRepository.GetEmployees();
return query;
}
}
}
and AddStudentMutation.cs
namespace GraphQL.Command.Students
{
public class AddStudentMutation
{
public async Task<Student> AddStudentAsync(AddStudentInputType student,[Service] IMediator mediator)
{
var result =await mediator.Send(new AddStudentCommand(student.FirstName,student.LastName,student.StreetAddress,
student.City,student.State,student.ZipCode));
return result;
}
}
[GraphQLName("AddStudentInput")]
public class AddStudentInputType
{
public string FirstName { get; set; }
public string LastName { get; set; }
public string StreetAddress { get; set; }
public string City { get; set; }
public string State { get; set; }
public string ZipCode { get; set; }
}
}
When I run the application I get the following error:
The name `Student` was already registered by another type. (HotChocolate.Types.ObjectType<Domain.Query.Students.Student>)
If I change the Student entity in Domain.Query.Students.Student to ReadStudent or something else, it will run without any issue, but I don't want to change it.