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· 4 min read

I want to leverage my visitor pattern source generator to implement a simple minimal api.

I aim to:

  • Have a request and a request handler for my endpoint. I will not use mediatr or any similar library and I will not use any real storage, only some in memory data structure to showcase the visitor pattern approach.
  • The request handler Handle method returns an interface, every subtype represents a different type of result, a success, and one type for each error (provided) emitted by the handled.
  • For each subtype we want to be able to return a possibly different http response.