Refactoring 009 — Protect Public Attributes

Refactoring 009 — Protect Public AttributesForget about data structures, DTOs, POJOs, and anemic objects.TL;DR: Avoid external manipulationProblems AddressedEncapsulation ViolationAnemic ModelsRelated Code SmellsCode Smell 01 — Anemic ModelsCode Smell …


This content originally appeared on Level Up Coding - Medium and was authored by Maximiliano Contieri

Refactoring 009 — Protect Public Attributes

Forget about data structures, DTOs, POJOs, and anemic objects.

TL;DR: Avoid external manipulation

Problems Addressed

  • Encapsulation Violation
  • Anemic Models

Related Code Smells

Steps

  1. Change the visibility of your attributes from public to private.

Sample Code

Before

public class Song {
   String artistName;
   String AlbumName;
}

After

public class Song {
   // 1- Change the visibility of your attributes from public to private
   private String artistName;
   private String AlbumName;
  // We cannot access attributes until we add methods
}

Type

[X] Semi-Automatic

We can change the visibility with an IDE or text editor.

Safety

This is not a safe refactor.

Existing dependencies may break.

Why code is better?

We can change encapsulated code easily.

The code is not repeated.

Limitations

Some languages don’t have visibility options.

Tags

  • Anemic

Related Refactorings

Refactoring 001 — Remove Setters

Credits

Image by Couleur on Pixabay

This article is part of the Refactoring Series.

How to Improve your Code With easy Refactorings

Refactoring 009 — Protect Public Attributes was originally published in Level Up Coding on Medium, where people are continuing the conversation by highlighting and responding to this story.


This content originally appeared on Level Up Coding - Medium and was authored by Maximiliano Contieri


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