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It quickly became evident I needed a dependency injection system. Instead of taking a dependency on an external provider, I decided to implement my own. Again, this was mostly a learning experience, but I also wanted to minimize dependencies and make it more self-contained so that overriding defaults is the exception, not the null. The system allows for registering types that are implemented on the fly, and singletons. I may have made a bad decision when I chose to implement the solution as a static host, but it was the easiest way to make it globally available. The caveat is that I have to run tests in single-threaded to avoid conflicts with the services mutating as part of test runs. I am considering refactoring to allow partitions as part of Issue #20 but for now I haven’t encountered major issues outside of testing.
Notice that I’m using EF Core extension methods and functions as part of the query! Although I haven’t tested it, this should also work perfectly fine with Azure Cosmos DB. It was a very exciting moment to see the Sample project run and return results the first time. I plan to build a more involved sample based on the reference contacts app and MVVM. The rest of this post is about the journey. I won’t cover everything, but it has been an amazing journey the past several months.
How to adopt a versioning strategy using tools like Nerdbank GitVersion
⭐ Tip : I wish I knew this earlier, but ultimately I found two resources that helped me tremendously with understanding expressions. The first is a single class in the .NET Core source. Expressions provide a surprisingly detailed representation when you call ToString() and that is due to the ExpressionStringBuilder class. Because it must deal with every expression type, it is a single source to understand how to navigate and read parts of expressions. The second resource is the EF Core source code. It takes a while to understand but I consider the code in the EFCore/Query subfolder to be a graduate course curriculum in expressionology.
How to apply a common set of style guidelines across projects using StyleCop and .editorConfig
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