Inside the Upvote Post use case

Our first task with the Use Case/Application Service is to fetch all of the Aggregates and entities necessary for us to upvote a Post.

Given the first scenario from our test specifications (upvoting a post when one has already upvoted it), which Aggregates and entities are involved?

  • The Post to be upvoted needs to be fetched.
  • The Member about to do the upvoting - we need that too.
  • Any PostUpvotes that were already cast by the Member against this Post.

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