The Extraction Process
Of the refactoring processes described in this book, extracting domain logic is going to be the most difficult, time consuming, and detail-oriented. This is a very tough thing to do, and it requires a lot of care and attention. The domain logic is the very core of our legacy application, and we need to make sure to pull out just the right parts. This means success is completely dependent on our familiarity and competence with the the legacy application as it exists now.
Luckily, our prior exercises in modernizing our legacy codebase have given us a broad overview of the application as a whole, as well as deep knowledge of the specific parts we have had to extract and refactor. This should endow us with the confidence to complete ...
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