1
vote
2answers
83 views

Databases and the single responsibility principle

Can the single responsibility principle be applied to databases? relational databases I mean. I'm asking this because a typical database will have several tables and we may find something like that ...
2
votes
1answer
182 views

Design Patterns for creating tasks

I am developing software where each action in my entities need create tasks that will be execute in my infrastructure. When I create a task it is only records in the database. Afterwards, a windows ...
1
vote
2answers
207 views

How to refactor code that has 2 concerns

Say I have this code: if ($this->ship == "e") { $this->price->addLine($this->price->base * $this->price->e, 0, "Export"); ...
35
votes
11answers
4k views

Ensure that each class has only one responsibility, why?

According to Microsoft documentation, the Wikipedia SOLID principe article, or most IT architects we must ensure that each class has only one responsibility. I would like to know why, because if ...
0
votes
0answers
115 views

API Client Design

I'm designing a client to the Tomtom WEBFLEET.connect API in PHP. (You can read more about the API through the full documentation here: ...
9
votes
2answers
314 views

Too many CS files in a single project [duplicate]

I am working on a ‘brown-field’ project, with a team of programmers. I understand each programmer will have different styles. I am running into some criticism with my coding style, specifically ...
2
votes
2answers
180 views

Achieving multiple tasks within one loop

With relation to what's considered good OOP engineering principles, SOLID, DRY, KISS etc I am wondering whether to complete multiple tasks within one loop when easily done. The problem is that this ...
2
votes
2answers
236 views

Single responsibility vs procedural programming

Single responsibility (from SOLID) is like making me create classes with only one public method. But if it's so, it would be possible use static methods, and go back to procedural programming. What's ...
22
votes
8answers
2k views

What is the real responsibility of a class?

I keep wondering if it is legitimate to use verbs that are based on nouns in OOP. I came across this brilliant article, though I still disagree with the point it makes. To explain the problem a bit ...
2
votes
2answers
457 views

Is it a Single Responsibility Principle violation?

I'm designing an OO graph library and at the moment I'm trying to figure out the design for a GraphEdge class. I've added setters and getters for it's nodes, direction and weight. This seemes ...
6
votes
2answers
430 views

Is it good to have an interface plenty of methods which belong to different concepts, just to preserve the Liskov's Principle?

I'm currently studying a course based on Software Design and I had a discussion in class with my professor and some classmates about a problem represented by the next scenario: Scenario Imagine ...
4
votes
3answers
538 views

Do setters and getters always break the Single-Responsibility Principle?

As we know, The SRP states that every class should have single responsibility and that responsibility must be entirely encapsulated by the class. But setters and getters do serve another ...
9
votes
2answers
435 views

Is there an “ask for only what you need” interface principle?

I have grown into using a principle for designing and consuming interfaces that says basically, "ask for only what you need." For instance, if I have a bunch of types that can be deleted, I'll make ...
4
votes
3answers
491 views

Single Responsibility Principle Implementation

In my spare time, I've been designing a CMS in order to learn more about actual software design and architecture, etc. Going through the SOLID principles, I already notice that ideas like "MVC", ...
8
votes
2answers
283 views

When following SRP, how should I deal with validating and saving entities?

I've been reading Clean Code and various online articles about SOLID lately, and the more I read about it, the more I feel like I don't know anything. Let's say I'm building a web application using ...