All Questions
12 questions
6
votes
3
answers
661
views
Hexagonal Architecture + Domain Driven Design. How to perform a correct implementation?
Currently, I am trying to implement these two architectures together with Java and Spring (although technology shouldn't matter I think).
But I'm encountering problems getting them to work together.
I ...
- 171
0
votes
2
answers
221
views
Where perform mapping in strict Domain-Driven Design?
I want to create an example application where we use a strict domain-driven design and layering (controller, service, repository). Most notably, we have a clear distinction between the domain and the ...
- 9
6
votes
3
answers
3k
views
In vertical slice architecture, how can I deal with entities/repositories that are used in multiple slices?
I'm trying to group the components of my system by funtionality. This is the analysis class diagram of my system model.
A service class that involves a Post entity might necessarily interact ...
- 363
3
votes
4
answers
1k
views
Role of DTOs in Rich Domain Model
I work with Spring applications. Recently I have found this article about the Anemic Domain Model.
They recommend putting logic in Entity classes. It solves a problem that Martin Fowler described in ...
3
votes
1
answer
21k
views
Project Structure of Domain Driven Design in maven Java Spring-Boot [closed]
My team is in dilemma, we have an existing maven spring-boot Java8 project with following onion architechture.
controller --> service --> dao --> jpa repositories
...
- 165
8
votes
1
answer
5k
views
Updating nested objects in DDD Aggregate by example: delegation or direct access from the root?
The example domain problem
There is a student attendance tracking system that keeps records of student attendances of ExerciseGroups.
Course is a top-level component, AR, describes a generic info ...
- 461
2
votes
0
answers
406
views
Examples for "serverless" Java service for AWS Lambda
Doesn anybody have practical experience with implementing a (micro)service based on AWS Lambda?
My team is currently working on an MVP. We started with a monolith and that has worked very well. It's ...
- 527
3
votes
2
answers
1k
views
Value object that depends on multiple aggregates' lifecycle in DDD
During prototyping a simple ddd application from public transit domain I've faced a problem with one value object - Transit Pass:
Each Customer can buy a transit Pass thatallows a passenger of the ...
- 461
1
vote
1
answer
841
views
Rich Model vs God Class [duplicate]
I have a legacy code containing some behaviour classes, like services and controllers. My model is pretty anaemic. It's just a repository of getters and setters, and I want to refactor it. There is a ...
- 29
2
votes
2
answers
1k
views
DDD Request Validation Handling
I stuck somewhere that I can't find a solution! There are plenty of validation questions here, but as far as I see, most of them were asking about entity validation. But what about request validation? ...
- 137
0
votes
3
answers
615
views
Assigning responsibility for cancelling an Order
During a conversation with our Domain Expert we can across this feature:
A Customer service agent can cancel an Order by decreasing its quantity. To cancel an Order we decrease its quantity by the ...
- 6,663
2
votes
2
answers
2k
views
From a DDD perspective is a report generating service a domain service or an infrastructure service?
Let assume we have the following service whose responsibility is to generate Excel reports:
class ExcelReportService{
public String generateReport(String fileFormatFilePath, ResultSet data){
...
- 6,663