Book Image

An Atypical ASP.NET Core 5 Design Patterns Guide

By : Carl-Hugo Marcotte
Book Image

An Atypical ASP.NET Core 5 Design Patterns Guide

By: Carl-Hugo Marcotte

Overview of this book

Design patterns are a set of solutions to many of the common problems occurring in software development. Knowledge of these design patterns helps developers and professionals to craft software solutions of any scale. ASP.NET Core 5 Design Patterns starts by exploring basic design patterns, architectural principles, dependency injection, and other ASP.NET Core mechanisms. You’ll explore the component scale as you discover patterns oriented toward small chunks of the software, and then move to application-scale patterns and techniques to understand higher-level patterns and how to structure the application as a whole. The book covers a range of significant GoF (Gangs of Four) design patterns such as strategy, singleton, decorator, facade, and composite. The chapters are organized based on scale and topics, allowing you to start small and build on a strong base, the same way that you would develop a program. With the help of use cases, the book will show you how to combine design patterns to display alternate usage and help you feel comfortable working with a variety of design patterns. Finally, you’ll advance to the client side to connect the dots and make ASP.NET Core a viable full-stack alternative. By the end of the book, you’ll be able to mix and match design patterns and have learned how to think about architecture and how it works.
Table of Contents (27 chapters)
1
Section 1: Principles and Methodologies
5
Section 2: Designing for ASP.NET Core
11
Section 3: Designing at Component Scale
15
Section 4: Designing at Application Scale
21
Section 5: Designing the Client Side
25
Acronyms Lexicon

Implementing the Composite design pattern

The Composite design pattern is another structural GoF pattern that helps us manage complex object structures.

Goal

The goal behind the Composite pattern is to create a hierarchical data structure where you don't need to differentiate groups of elements from a single element. You could think of it as a way of building a graph or a tree with self-managing nodes.

Design

The design is straightforward; we have components and composites. Both implement a common interface that defines the shared operations. The components are the single nodes, while the composites are collections of components. Let's take a look at a diagram:

Figure 9.7 – Composite class diagram

In the preceding diagram, Client depends on an IComponent interface. By doing so, it is unaware of the implementation it is using; it could be a Component or a Composite. Then, we have two implementations:

  • Component represents...