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Audit trails for Elixir/PostgreSQL based on triggers

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carbonite lib carbonite transaction.ex
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lib/carbonite/transaction.ex 

# SPDX-License-Identifier: Apache-2.0



defmodule Carbonite.Transaction do

  @moduledoc """

  A `Carbonite.Transaction` is the binding link between change records of tables.



  As such, it contains a set of optional metadata that describes the transaction.

  """



  use Ecto.Schema



  @primary_key false

  @timestamps_opts [type: :utc_datetime_usec]



  @type t :: %__MODULE__{

          id: non_neg_integer(),

          meta: map(),

          processed_at: DateTime.t(),

          inserted_at: DateTime.t(),

          changes: Ecto.Association.NotLoaded.t() | [Carbonite.Change.t()]

        }



  schema "transactions" do

    field(:id, :integer, primary_key: true)

    field(:meta, :map)

    field(:processed_at, :utc_datetime_usec)



    timestamps(updated_at: false)



    has_many(:changes, Carbonite.Change, references: :id)

  end

end