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1
vote
0answers
70 views

Change object state in different point in program

This is not about whether or not getters/setters are wrong. I understand its impact to encapsulation and that question has been raised here and SO several times already. I also do not want to just ...
1
vote
1answer
59 views

Best practice for settings for PHP class for code generation [closed]

I would like to have a class create any code from given options and output it in a chosen way. Background I have written class for generation of simple JavaScript code for such cases where is needed ...
1
vote
1answer
131 views

Javascript Closure Style Similar to Java Class Structure

PROBLEM: There is a coding imperative (S. McConnel, Code Complete) that one shouldn't code on language, but by means of it, e.g. doing right style things even if language doesn't have some ...
6
votes
4answers
307 views

Class design dilemma: Encapsulation vs Single Responsibility/Separation of Concerns

I'm working on a class that represents an object with multiple representations - one is an XML type representation used by an automatic ordering system, the other is a POJO-based representation used ...
3
votes
1answer
130 views

Passing MVVM objects to other classes [closed]

So I'm using C# WPF and binding to a Model View to display states. The data that needs to be displayed is spread across a couple different classes. For instance I have a class that reads out digital ...
1
vote
1answer
88 views

Setting up my inheritance model?

I'm working on refactoring a synchronization web app that our company uses. Currently it's merely a set of controllers that fire up a set of helpers that go through a long chain of if-else type ...
1
vote
0answers
86 views

Having a globally static cached list without breaking encapsulation?

I have a couple wrappers around third party APIs that allow me to retrieve information from certain web services. Querying these services can be rather time intensive, so in my older version of my ...
0
votes
1answer
110 views

Should I hold an Id and the Item [duplicate]

Let's say I have a Customer which contains an Address class like: public class Customer { public int Id { get; set; } public string FirstName { get; set; } public string LastName { get; ...
1
vote
2answers
92 views

How to mitigate complexity of fallbacks introduced to automatically retry upon failure?

So this may come off a bit broad and generalized, but after spending some time working around under developers, I've come to notice many different methods and design patterns. However, one big thing ...
3
votes
1answer
113 views

A condition on an argument used in multiple calls of a method: enforced by caller or by the method?

Let's assume I have an object a of a class A. It has a method that needs an argument in form of another object of a particular type - but the argument should also be in particular state, because the ...
14
votes
4answers
53k views

What is the use of Association, Aggregation and Composition?

I have gone through lots of theories about what is encapsulation and the three techniques of implementing it, which are Association, Aggregation and Composition. What I found is: Encapsulation ...
0
votes
3answers
162 views

Difference of efficiency [duplicate]

I'm doing a compiler, and I'm using the System.out.println(); to print assembly; And the code get bigger, and more complicate to understand. I want to know whats is the difference of efficiency ...
0
votes
2answers
142 views

Meaning of using getters and setters and Uses of parameterized Constructor. [duplicate]

I am using getters and setters to for the purpose of encapsulation. public class Student { private String studentID; private String studentName; private String address; public ...
42
votes
7answers
6k views

Using third-party libraries - always use a wrapper?

Most projects I am involved with use several open-source components. As a general principle, is it a good idea always to avoid binding all components of the code to the third-party libraries and ...
4
votes
2answers
131 views

Does returning pointer to composed objects violate encapsulation

When I want to create an object which aggregates other objects, I find myself wanting to give access to the internal objects instead of revealing the interface to the internal objects with passthrough ...
6
votes
6answers
2k views

What is the usefulness of private variables? [duplicate]

While I've never used a language that had built-in variable privacy, a book I'm reading by Douglas Crockford explains a way to create privacy in JavaScript, however it doesn't make sense to me so. The ...
2
votes
2answers
322 views

How is encapsulation broken by getters/setters, even when using MVC model [duplicate]

I was thinking about encapsulation in Java and then I thought how getters/setters break encapsulation. After I went through this , I saw many recommendations like to avoid getters/setters on fields ...
15
votes
6answers
6k views

Why did Java make package access default?

I'm asking this question because I believe they did it for a very good reason and that most people do not use it properly, well from my experience in industry so far anyway. But if my theory is true ...
3
votes
3answers
306 views

'Encapsulation Vs Performance' trade-off in a lockable linked list

Main purpose of encapsulation is to protect in-variants of any class(in java). Here is the complete code for class DList/class lockDList/class DListNode/class LockDListNode. class DList and it's ...
3
votes
3answers
388 views

Abstraction concept in OOP

I hear that Abstraction is a technique that helps us identify which specific information should be visible, and which information should be hidden. Encapsulation is then the technique for packaging ...
3
votes
1answer
41 views

Abstract/encapsulating session superglobal usage inside common accessor class

I am in the process of removing direct dependencies from an existing project. I have now come to removing the direct use of $_SESSION inside scripts. This is to make the same scripts available for an ...
3
votes
2answers
2k views

What are the disadvantages of self-encapsulation?

Background Tony Hoare's billion dollar mistake was the invention of null. Subsequently, a lot of code has become riddled with null pointer exceptions (segfaults) when software developers try to use ...
4
votes
3answers
216 views

Nested POJOs, exposing collections, detecting changes

I have a couple plain object classes to represent data read from a file. They look something like this: public class Command { private String name; private List<Message> messages; } ...
5
votes
1answer
444 views

How to store satellite data in C data structures

I've been reading through Introduction To Algorithms 3rd Ed, and I am having difficulty in implementing some practical situations. It's not the theory, or implementing the internals of the data ...
0
votes
1answer
177 views

How much to encapsulate when objects being dealt with are pretty similar

As I have been answering questions related to object-oriented design and how to go about reducing the amount of classes to make sure that there is not a lot of "class clutter" and code repetition I ...
2
votes
1answer
324 views

Should we encapsulate everything in a try{} block in a Try object?

Why can't I make a class for a Try including what I try and then run that in the try {} block? Why is it impractical? class DBConnectTry extends Try { TryResponse response[] attempt(TryObject ...
12
votes
4answers
1k views

Do I suffer from encapsulation overuse?

I have noticed something in my code in various projects that seems like code smell to me and something bad to do, but I can't deal with it. While trying to write "clean code" I tend to over-use ...
7
votes
5answers
405 views

Should private functions be held to the same standards as public functions?

If I'm building private utility functions, should they be held to the same rigorous standards in terms of handling invalid data as public functions? Example:If I'm writing code to calculate the ...
1
vote
1answer
106 views

If the representation part of type abstraction is declared private, then how does sub-classing violate encapsulation?

Here, I learned that sub-classing violates encapsulation: it violates encapsulation, since the implementations of the superclass and subclass become tightly coupled For instance, If we consider ...
0
votes
0answers
42 views

Abstracting AutoLayout sensibly - why is this so conceptually tough and where should I begin?

Below are some babbling, probably incoherent thoughts, but I am so stuck on this problem and I feel like an elegant solution is possible. Though it is indisputably awesome, and makes programatic view ...
16
votes
5answers
7k views

If a variable has getter and setter, should it be public?

I am an about to graduate Computer Science student so probably this is a stupid question. If I have a class with a variable that is private and the class have getter and setter for that variable. Why ...
4
votes
1answer
349 views

How can I use the “Non-Member Functions Improve Encapsulation” pattern from C#?

In 2000, Scott Meyers argued that non-member functions improve encapsulation. In C++, a non-member function is a C-style global function: ...
1
vote
4answers
299 views

Why I need to make method of my class private, If I need to access it throughout my application?

I am going through the beginners tutorial for C# from a website http://www.homeandlearn.co.uk/csharp/csharp_s10p1.html On chapter of classes, it makes the method of class private and then use ...
13
votes
5answers
2k views

Can I use Dependency Injection without breaking Encapsulation?

Here is my Solution and projects: BookStore (solution) BookStore.Coupler (project) Bootstrapper.cs BookStore.Domain (project) CreateBookCommandValidator.cs CompositeValidator.cs IValidate.cs ...
0
votes
1answer
218 views

Access fields of super class from derived classes [duplicate]

There is an abstract BaseGame class that will be inherited by specific game classes. This class has an attribute requestHandler that will be used in all subclasses and should be initialized in the ...
85
votes
15answers
8k views

TDD Red-Green-Refactor and if/how to test methods that become private

as far as I understand it, most people seem to agree that private methods should not be tested directly, but rather through whatever public methods call them. I can see their point, but I have some ...
4
votes
4answers
186 views

Design question concerning proper and practical encapsulation

I have been working on refactoring old code and found a lot of instances of the following type of situation: There is a master object which we call "Application" and there is only one of these. The ...
-2
votes
2answers
435 views

Why public access level method get overridden in java?

This question is raised with a clarification required to decide when to declare a method protected or public during class design of a package. My point is, if one needs to override a method of a ...
1
vote
2answers
542 views

Why am I getting field visibility warnings in Sonar?

Some static analysis tools flag non-private fields with Variable '[nameHere]' must be private and have accessor methods. Sonar consistently presents such warnings and wants to change all ...
6
votes
3answers
840 views

Can “higher order function” feature allow/maintain abstraction and encapsulation?

Below is the function repeat written using a functional paradigm, such that when called as repeat(square, 2)(5) it will apply the square function 2 times on the number 5, something like ...
0
votes
2answers
118 views

Should methods perform checks that they accomplished the task they were built for? or should they just throw an exception?

What are some pro's and con's of validating your performed the task intended? public static bool UploadFile(string filename) { // 1. upload the file // 2. check to see if the file now exist ...
4
votes
1answer
111 views

Encapsulation: Should all properties be private and protected?

After learning about encapsulation in OOP, I started to use only protected and private properties, share data via accessors and change properties via mutators. Right now, I'm afraid of declaring ...
1
vote
2answers
128 views

Query on hiding implementation details in java

With the below piece of thread related code, I see that author of Thread class is hiding the details about the working of start() method. What a user of Thread class need to know is, class Thread ...
2
votes
3answers
212 views

Getters and Setters unclear example

I know autmatic getters and setters are considers bad as they tend to break object's encapsulation. They also move the work that should have been done within the object outside. Allen Holub is a big ...
2
votes
6answers
2k views

Should I use automatic properties?

I'm new to C# coming from a Java background. I'm working on a take home assignment for a coding interview. I normally write my code as following(Java): public class Test { //fields private ...
1
vote
1answer
291 views

Should ORM data access methods be wrapped or used directly?

We're using an internally-built ORM. Each table is represented by a Model class, which inherits from a base model class that has a handful of methods like GetAll, GetWhere (to get rows with specified ...
-2
votes
1answer
142 views

Architecture - 3D Modeling Library

I'm writing a library to allow users to generate 3D models programatically. User writes code (e.g. Square(4)) User views preview of 3D model (with built in visualizer) User can "print" the model to ...
4
votes
1answer
201 views

Implementing a Username Class

I am attempting to encapsulate several features about a user in a single class. Although the main use for this class would be to initialize it once and never have to call set any variables again, I ...
2
votes
5answers
347 views

Relative encapsulation design

Let's say I am doing a 2D application with the following design: There is the Level object that manages the world, and there are world objects which are entities inside the Level object. A world ...
2
votes
4answers
292 views

Why do some projects have getters and setters for public instance variables?

I was looking into an open-source game framework project written in Java. It has several classes that: Have public instance variables. Have getter/setters for such variables. Generally, I write ...