Here is a piece exploring the "Uni Ecto" concept, focusing on how to bridge reactive Java (Uni) with Elixir's database logic, or how to conceptualize them in a polyglot architecture.

Uni.new() |> Ecto.insert(changeset) |> Uni.on_error(:insert, fn _step, error, ctx -> if error.reason == :invalid do # Log and return a default :ok, %MyApp.Useremail: "fallback@example.com" else :error, error end end)

test/support/repo.ex

config :uni_ecto_plugin, Repo, log_level: :info, global_filters: [:deleted_at], tenant_source: :header Use code with caution. 3. Implement in Your Schemas

def transfer_funds(from_id, to_id, amount) do Uni.new() |> Ecto.transaction(fn -> Uni.new() |> add_step(:decrement, Debit.run(from_id, amount)) |> add_step(:increment, Credit.run(to_id, amount)) |> Uni.execute() end) |> Uni.execute() end

def resolve(uni, _opts) do case MyApp.Fallback.get(uni) do nil -> :error, :uni_not_found record -> :ok, record end end

defmodule UniEctoPlugin.TestRepo do use Ecto.Repo, otp_app: :uni_ecto_plugin, adapter: Ecto.Adapters.Postgres end

You achieve the same result as any dedicated plugin would provide. Remember to always enforce uniqueness at the , not just in validations, to ensure your data remains consistent even under high concurrency.