Questions tagged [business-logic]
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182 questions
1 vote
1 answer
253 views
OO design - Process that relies on the current state of objects
We have a CAD software extension, where you can draw products like walls, doors, windows, etc., and you can export the drawing as an order, which contains the parts and costs. As part of this export, ...
- 369
-1 votes
1 answer
78 views
Complex domain problem to be modeled with DDD
There is a case management application. New requirements want to add statuses to cases. The case will go through a series of statuses until completion. Each case belongs to a case type. There are many ...
- 795
1 vote
3 answers
351 views
Where to handle Validation Errors in Business logic layer?
I'm currently designing a multi-layered application and am trying to figure out the best practice for error handling within the Business Logic Layer (BLL). Should I handle errors directly within the ...
0 votes
0 answers
50 views
Balancing logic placement in the domain and general perfomance of the system
I am writing my first application using DDD (in Node with TS) and I started writing all the domain first -- before starting the repositories/DB and then the application, while writing unit tests for ...
1 vote
2 answers
227 views
Placing business logic on a not so small/big project
I am having a bit of problem trying to find the correct place for business logic. The project I am working on isn't huge, but is not small either and has a very considerable importance in my company. ...
3 votes
1 answer
2k views
How would you implement a promotion/discount system?
Two recent failed projects in my career involved trying to implement a discount/promotional offer system for retail. For example, a retailer may want to offer discount codes in emails or newsletters, ...
- 288
1 vote
2 answers
245 views
Strategies to abstract away technical details when dealing with transactions
I like programming in such a way that every component/injectable of the applications I build, has a clearly defined scope, and it's easily tested. With years working as a Developer I've come to ensure ...
- 129
-1 votes
2 answers
172 views
How to make domain objects accessible to MVC controllers and views?
Summary of my question in a short form: How to propagate changes of domain objects upwards without introducing application logic into them? Following 'facts' are based on prescriptions from respected ...
- 125