September 2019
Beginner
156 pages
2h 47m
English
Content preview from Get Your Hands Dirty on Clean Architecture
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Chapter 9
Assembling the Application
Now that we have implemented some use cases, web adapters, and persistence adapters, we need to assemble them into a working application. As discussed in Chapter 3, Organizing Code, we rely on a dependency injection mechanism to instantiate our classes and wire them together at startup. In this chapter, we will discuss some approaches for how we can do this with plain Java and the Spring and Spring Boot frameworks.
Why Even Care about Assembly?
Why aren't we just instantiating the use cases and adapters when and where we need them? Because we want to keep the code dependencies pointing in the right direction. Remember: all dependencies should point inward, toward the domain code of our application, so ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.