In my current project I have a rather complex data-tranfsformation. Additionally there are several flavors fo ths trqansormation that share a lot of behaviour.
Is therea any other may to call a callback-function inside a bahaviour apart from passing the module-name of the callback-module like this?
defmodule MyBehaviour do
@callback specific_handling(data :: term) :: term
@callback very_specific_handling(data :: term) :: term
defmacro __using__(_opts) do
quote do
@behaviour MyBehaviour
alias MyBehaviour
def initiate_processing(data) do
MyBehaviour.process_data(data, __MODULE__)
end
end
end
def process_data(data, callback_module) do
data
|> do_stuff_with_data(callback_module)
# and other calls to behaviour-functions
|> callback_module.specific_handling()
end
defp do_stuff_with_data(data, callback_module) do
data
# and other calls to behaviour-functions
|> do_specific_stuff(callback_module)
end
defp do_specific_stuff(data, callback_module) do
data
# and other calls to behaviour-functions
|> callback_module.very_specific_handling()
end
end
defmodule DataHandler11 do
use MyBehaviour
def specific_handling(data) do
# do specific stuff with data
data
end
def very_specific_handling(data) do
# do specific stuff with data
data
end
end
defmodule DataHandler12 do
use MyBehaviour
def specific_handling(data) do
# do specific stuff with data
data
end
def very_specific_handling(data) do
# do specific stuff with data
data
end
end
data = nil
handler = 1
case handler do
1 -> DataHandler11.initiate_processing(data)
2 -> DataHandler12.initiate_processing(data)
end
