Macros to create proxy functions to commands and queries in a module.

Examples

defmodule Users do
  use Cqrs.BoundedContext

  command CreateUser
  command CreateUser, as: :create_user2

  query GetUser
  query GetUser, as: :get_user2
end

Commands

iex> {:error, {:invalid_command, errors}} = Users.create_user(name: "chris", email: "wrong")
...> errors
%{email: ["has invalid format"]}

iex> {:error, {:invalid_command, errors}} =  Users.create_user2(name: "chris", email: "wrong")
...> errors
%{email: ["has invalid format"]}

iex> Users.create_user(name: "chris", email: "chris@example.com")
{:ok, :dispatched}

iex> Users.create_user2(name: "chris", email: "chris@example.com")
{:ok, :dispatched}

Queries

iex> Users.get_user!(email: "wrong")
** (Cqrs.QueryError) email has invalid format

iex> {:error, errors} = Users.get_user2(%{bad: "data"})
...> errors
%{email: ["can't be blank"]}

iex> {:error, errors} = Users.get_user(email: "wrong")
...> errors
%{email: ["has invalid format"]}

iex> {:ok, query} = Users.get_user_query(email: "chris@example.com")
...> query
#Ecto.Query<from u0 in User, where: u0.email == ^"chris@example.com">

iex> {:ok, user} = Users.get_user(email: "chris@example.com")
...> %{id: user.id, email: user.email}
%{id: "052c1984-74c9-522f-858f-f04f1d4cc786", email: "chris@example.com"}