# The root class of the business objects.
# This factorizes most services and domain knowledge used by the `RestrictedSerializer`
#
# In real enterprise-level code, the various specific behaviors can be specified in more semantic classifiers.
abstract class E
	serialize

	# The semantic business identifier.
	#
	# With the `RestrictedSerializer`, references to `E` objects will be replaced with `id`-based information.
	# This avoid to duplicate or enlarge the information cross-call wise.
	#
	# A future API/REST call can then request the _missing_ object from its identifier.
	var id: String

	# A phantom attribute to be serialized by the custom `RestrictedSerializer`.
	#
	# This can be used to inject constant or computed information that make little sense to have as a genuine attribute in
	# the Nit model.
	fun phantom: String do return "So Much Fun"

	# An attribute not to be serialized by the custom `RestrictedSerializer`.
	# e.g. we want it on the DB but not in API/REST JSON messages
	#
	# Note that the annotation `noserialize` hides the attribute for all serializers.
	# To hide the attribute only in the `RestrictedSerializer`, it will have to actively ignore it.
	var semi_private = "secret"

	# Test method that serializes `self` and prints with the standard JsonSerializer
	fun ser_json
	do
		var w = new StringWriter
		var js = new JsonSerializer(w)
		js.plain_json = true
		js.serialize(self)
		print w
	end

	# Test method that serializes `self` and prints with the custom RestrictedJsonSerializer.
	fun ser_json2
	do
		var w = new StringWriter
		var js = new RestrictedJsonSerializer(w)
		js.plain_json = true
		js.serialize(self)
		print w
	end
end