Questions tagged [clean-architecture]
Clean Architecture is a book by Robert C. Martin that contains solutions to architecting software solutions. Collectively these concepts are referred to as "Clean Architecture".
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Streams and clean architecture
I am pretty new to async programming and the whole stream stuff, since i have a web programming background with php, where async programming and streams isn't really a big topic most time.
I try to ...
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Validation logic dependencies and separation of concerns
I am going back and forth on an aspect of our FluentValidation and MediatR pipeline behavior implementation. We receive requests which, in a Mediator pattern, are mapped to command or query objects, ...
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Clean code: formatting rules, dependent functions, multiple calls [closed]
About formatting
Here are two scenarios in which the details of the formatting are described.
How should in the clean code way, this be formatted
Scenario 1: Dependent functions of dependent functions
...
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Is there a clean way to model methods that only make sense depending on the current state of the object?
Let's say that I have a class called Mission. This class is intended to represent a mission requested by a professor working in a faculty. Mission has a private enum field representing whether the ...
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Should input adapters receive the domain model?
This article on Medium addresses the scopes of the domain model in hexagonal architecture.
I have sketched the following generic hexagonal architecture:
On the one hand, the secondary/output adapter ...
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197
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Clean Architecture with Microservices
I'm fairly new at system architecting and I'm looking for some advice. My company is revamping its order management system. Currently is a monolith system that scales very poorly and is difficult for ...
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Designing Clean Architecture(Hexagonal) for a Spring Boot Application : Project Layout and Class Organization
I'm currently in the process of integrating Clean Architecture into my Spring Boot project and I'm seeking advice on the ideal project structure and the types of classes and projects that should be ...
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UI or Application layer responsibility - retrieving additional data for display
I have an application service that retrieves Order data. The service is consumed in UI, where it can be edited by users.
Additionally, the users wants to see related data such as ordered products' ...
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Clean architecture for file upload in a flutter app
I have started a flutter app and want to apply clean architecture to it. The first use case i have is the following:
A user provides file(s)via "open file" dialogue. The provided files ...
- 388
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Key difference between Hexagonal Architecture vs Clean Architecture?
I am trying to improve the architecture for my React app project that has grown in size lately.
I'm looking at Hexagonal architecture and Clean architecture, and I couldn't really see the difference ...
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Clean Architecture: Loading data for the domain layer
Let's say my domain has a User Entity that has a many to many relationship with itself representing "Friends"
public class User
{
public int Id;
public IEnumerable<User>? ...
- 129
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Can the application layer extend the domain models?
I write BFF (Backend For Frontend) and it's domain is to provide user info and microservices integration.
The User domain model looks like below:
public class User
{
public required Guid Id { get; ...
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Domain Project and Identity Project circular dependency
I am currently working on implementing the Clean Architecture pattern using Entity Framework. However, I've encountered an issue related to the design of my Domain project. In this project, I need to ...
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1
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467
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Clean architecture - how to manage use cases that depends on external apis
How to apply clean architecture concepts in a software that depends on External APIs.
Example:
A business that offers some kind of subscription to its users.
Its convinient to store some subscription ...
- 21
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1
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Communicating unpredicted Failure from Repository implementation to Applicaiton Layer
My application follows Clean Architecture wherein the Application Layer wraps the Domain Layer. I try to adhere to DDD more-so as a "guiding light" than a strict rulebook.
Within the Domain ...
- 163
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Is it okay to have misleading struct and function names for the sake of encapsulation?
I'm writing this library in which the user can provide custom code defining the algorithm used for finding an optimal solution. In the papers that I have read, the targeted user thinks in terms of ...
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Clean Architecture and Access Control
I'm working on a .Net core API for product configuration and ordering. The ticket for Permissions has come up and I've been tasked with developing a solution, ideas of middleware have been mentioned.
...
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Split or join two use cases that are similar in Clean Architecture
In my working project I have a CustomerRegisterUseCase, that has following steps:
validate email is already in use;
hash password;
save customer in temporary table(tranfered to customer table after ...
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deciding where to put "formatting" logic - database or in application layer
We have an application that fetches user data from an Azure tenant via MS Graph. We need to distinguish between guests and regular members.
Guests come back with Usernames that look like this:
...
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Where to place a common database connection in clean architecture?
I am currently trying to follow the clean architecture approach but i wonder where common things like a database connections should take place.
Since i think a database connection usually will be ...
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Access one usecase into another usecase
I am working on machine learning project. I use jupyter for quick prototying. Now I am trying to convert it into concrete python project using clean architecture.
entities/
- problem.py # ...
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Clean Architecture Use Case and db transactions/unit of work
I've started working on a LoB application (as a learning exercise) while trying to express business logic with use cases from Clean Architecture. First use case is customer onboarding where client can ...
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Build a Rust project using Clean architecture and DB transactions in the same DDD bounded context
This is just an example of an (still incomplete) real-world project written in Rust using a clean architecture: https://github.com/frederikhors/rust-clean-architecture-with-db-transactions.
Goals
My ...
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Decoupling modules of a monolith
As part of an migration from .NET Framework to .NET Core we're looking to decouple elements of our monolith into more manageable modules. Ideally following a clean architecture/DDD/microservice ...
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Separating Application (Business Logic) Layer to Multiple Module Layers in Clean Architecture
Currently, I'm designing the Project based on Clean Architecture composing with 4 layers:
Domain
Application
Infrastructure
Presentation
Since the project is pretty huge, I'm now considering to ...
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Is it normal to use multiple repositories in one viewmodel?
Does it violating any conventions? Is it acceptable by MVVM? I have to separate the local data repository and online repository, but for login I have to use multiple repositories for getting response ...
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DDD - How to avoid validation rule duplication
From what I understand of DDD, my entities and value objects should be able to enforce its own invariants, meaning that its constructors will check for nulls, must contains numbers and letters, ...
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How to restrict the construction of a domain object to an external service?
I have this object
RelativeFoo{int relativeCode, Origin relativeTo}
And I want to map it to this other object
AbsoluteFoo{int absoluteCode}
In order to do this, I need to use a service whose ...
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1
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226
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Domain Modeling / Architecture
I'm experimenting with some projects at the moment and I am stuck trying to decide on the correct approach to this question.
Given a simple architecture like this consisting of
Domain - (Person and ...
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1
answer
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How much logic can the infrastructure level hold in Clean Architecture
I am trying to wrap my head around the concepts of Clean Architecture, and specifically about the responsibility of the Infrastructure layer. Its purpose is often described as "to provide ...
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In Clean Architecture, how do we name UseCases that get more and more specific without the names becoming too long?
All the examples of Clean Architecture that I see have very simple use cases, such as:
OpenAccountUseCase
DepositMoneyUseCase
However, real world applications have much more complex logic.
Let's say ...
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Typescript Clean Architecture: How to tackle use case that needs multiple repositories?
I am implementing clean architecture in my new back-end project and getting stuck with a particular use case.
I have a CreatePhysicianUseCase what is responsible for creating a new physician user in ...
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How to pass the entity's domain to the repository layer - clean architecture and spring JPA
According to Should I use a layer between service and repository for a clean architecture - Spring the Peristance layer is deprecated because the Repository is already an abstraction.
UML solution of ...
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3
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Is Microservices a means of implementing Clean Architecture through technological constraints, just way more expensive?
I spend a lot of time lately talking about Microservices architecture and I have a really hard time buying all the benefits that are sold to me. For most arguments I hear I come to the conclusion that ...
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Angular standalone components architecture
I am trying to understand the benefits/gains of using standalone components in a real project that my team and myself included are working on, and from my very humble point of view, I just can't see ...
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Where/how does the conversion of entity objects to data transfer objects take place in Clean Architecture?
Prolog:
I have a domain-layer which contains some entity-classes like Customer.
I have a application-layer which contains some data transfer object classes like CustomerDto.
My Problem:
At a presenter ...
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Do usecase-class work with domain-model or data-model at cleanarchitecture?
I interessted in the "usecases" and "how they interacts with the "context" at "clean architecture".
If I understand right, there will be two contexts.
First is the ...
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Clean Architecture : Application State
Given the following design from clean architecture in which layer would you put overall application state?
In each state a subset of use cases are allowed to be invoked. For example if application is ...
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2
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Help implementing call to external API and store summary in my database in hexagonal architecture with DDD
Good afternoon.
My situation is this:
I have to call an external API to create some data and store it there, but I want to have a summary of that data in my own database. I have my use case that ...
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How to design software architecture without solid requirements?
I am working on a project which does not have solid requirements, All is we have meetings with all the teams across and confluence pages. No one owns any requirements and it just float around ...
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On which layer of Clean Architecture hierarchy must be the entities with application-specific properties?
From the answer to Must the use cases extend the entities in Clean Architecture? I have known that the use cases must NOT extend the entities. It's fine, but what do I have to do with the properties ...
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How to implement repository in clean architecture
I need to rewrite my project due to many underlying issues causing errors and I started following clean architecture by Uncle Bob (I read the book).
I created my domain, infrastructure, application ...
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2
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Where to save entity metadata in a Ports-And-Adapters Architecture
I’m using a hexagonal/clean/ports-and-adapter architecture. For the sake of simplicity, I’ll only talk about domain and infrastructure here, where the infrastructure has dependencies on the domain but ...
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Must the use cases extend the entities in Clean Architecture?
Currently I don't understand the Use case concept enough good - too much abstract definitions but no particular examples. The section Use Cases of Chapter 20 Business Rules does not including any code ...
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Which Clean Architecture Areas do Gateways interfaces and their implementations belong to?
Talking about gateways from the Clean Architecture, it is required to distinguish:
The interfaces
The implementation of these interfaces
The TypeScript example:
// === Interface =====================...
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Making a Data Layer that is tightly coupled to the Presentation Layer in Clean Architecture
So I've got a simple object recognition app in iOS. I am trying to create an Interface-Adapter for the machine learning / computer vision like this:
protocol MachineLearningInterface {
func ...
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1
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Is it OK to use a Command Sourcing instead of Event Sourcing? Replay events in Commands-Repositories
I have a system that uses a graph database without any ORM, mapper or tool that tracks entity changes, like EntityFramework. I'm not using domain entities, instead I have an Event that calls changes ...
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Is it okay for an Interface Adapter / Repository / Gateway to use Entities in its implementation
I've got these classes:
enum Environment {
case staging
case production
static func current() -> Environment {
#if STAGING
return .staging
#elseif PROD
...
3
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1
answer
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High level abstraction of file scanning service in domain driven design, and the implementations
My domain requires that a Resource (ubiquitous language for a singular unit of data to be moved - commonly a file or folder) can only be moved if it has been Scanned to ensure it does not contain any ...
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Business rule or repository implementation rule in Clean Architecture
I'm studying Clean Architecture with python and got into this "problem" of choosing where to implement a rule (that I considered a Business Rule, maybe I'm wrong)
I have 2 Entities
@...
