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lazy_context

0.1.0-dev
0.1.5-dev 0.1.4-dev 0.1.3-dev 0.1.2-dev 0.1.1-dev 0.1.0-dev

This library wraps Ecto to provides default functions to access and store data.

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lazy_context lib behaviour.ex
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lib/behaviour.ex 

defmodule LazyContext.Behaviour do

  @moduledoc false



  defmacro with_behaviour(schema, fnames, expression) do

    module_name = :"#{System.unique_integer()}_behaviour"



    quote do

      defmodule unquote(module_name) do

        @type context_struct() :: %unquote(schema){}

        @type repo_ok_or_error() :: {:ok, context_struct()} | {:error, Ecto.Changeset.t()}



        @callback unquote(fnames.list)() :: list(context_struct())



        @callback unquote(fnames.get)(integer()) :: context_struct() | nil

        @callback unquote(fnames.get)(map()) :: context_struct() | nil

        @callback unquote(fnames.get!)(integer()) :: context_struct() | no_return()

        @callback unquote(fnames.get!)(map()) :: context_struct() | no_return()



        @callback unquote(fnames.create)() :: repo_ok_or_error()

        @callback unquote(fnames.create)(map()) :: repo_ok_or_error()

        @callback unquote(fnames.create!)() :: context_struct() | no_return()

        @callback unquote(fnames.create!)(map()) :: context_struct() | no_return()



        @callback unquote(fnames.create_or_update)(map()) :: repo_ok_or_error()

        @callback unquote(fnames.create_or_update!)(map()) :: context_struct() | no_return()



        @callback unquote(fnames.update)(term(), map()) :: repo_ok_or_error() | nil

        @callback unquote(fnames.update!)(term(), map()) :: context_struct() | no_return()



        @callback unquote(fnames.delete)(map()) :: repo_ok_or_error() | nil

        @callback unquote(fnames.delete!)(map()) :: context_struct() | no_return()



        @callback unquote(fnames.change)(map()) :: Ecto.Changeset.t()

      end



      @behaviour unquote(module_name)

      unquote(expression)

      defoverridable unquote(module_name)

    end

  end

end