Commanded v0.19.1 Commanded.Commands.Handler behaviour View Source

Defines the behaviour a command handler module must implement to support command dispatch.

Example

An open account handler that delegates to a bank account aggregate:

defmodule OpenAccountHandler do
  @behaviour Commanded.Commands.Handler

  def handle(%BankAccount{} = aggregate, %OpenAccount{account_number: account_number, initial_balance: initial_balance}) do
    BankAccount.open_account(aggregate, account_number, initial_balance)
  end
end

Link to this section Summary

Types

aggregate()

command()

domain_event()

domain_events()

reason()

Callbacks

handle(aggregate, command)

Apply the given command to the event sourced aggregate.

Link to this section Types