defmodule Pointers.Pointer do
  @moduledoc """
  A Pointer is a kind of global foreign key that can point to any of
  the tables participating in the abstraction.
  """

  use Ecto.Schema
  alias Pointers.Config
  alias Pointers.Table

  @primary_key {:id, Pointers.ULID, autogenerate: false}
  @foreign_key_type Pointers.ULID
  schema(Config.pointer_table()) do
    belongs_to :table, Table
    field :pointed, :any, virtual: true
  end

end