The Encapsulation Lose-Lose Game
Watch the long video: • Master the Design of Classes
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Consider a model class that depends on several other mutable classes.
With private components, we must define all operations on this class, making it grow to a monstrous size over time.
The alternative is to expose components publicly and let others operate on them.
The long video shows the development of this model.
The trouble is with operations that demand coordination between components.
Advancing to the next release of the book requires simultaneous changes to the publication date and the edition number.
This is the only valid way.
However, the edition component is a publicly accessible mutable object.
Someone could mutate it individually, breaking the domain rules.
Turning that component private would attract dozens of new methods into this class again, as you saw.
This problem has no satisfying solution in an entirely mutable object-oriented design.
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👨 About Me 👨
Hi, I’m Zoran, I have more than 20 years of experience as a software developer, architect, team lead, and more. I have been programming in C# since its inception in the early 2000s. Since 2017 I have started publishing professional video courses at Pluralsight and Udemy and by this point, there are over 100 hours of the highest-quality videos you can watch on those platforms. On my YouTube channel, you can find shorter video forms focused on clarifying practical issues in coding, design, and architecture of .NET applications.❤️
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