note description: "[ Node of a notification mailer chain ]" date: "$Date$" revision: "$Revision$" class NOTIFICATION_CHAIN_MAILER inherit NOTIFICATION_MAILER create make feature {NONE} -- Initialization make (a_mailer: like active) do active := a_mailer end feature -- Access active: NOTIFICATION_MAILER next: detachable NOTIFICATION_MAILER feature -- Status is_available: BOOLEAN do Result := active.is_available if not Result and attached next as l_next then Result := l_next.is_available end end feature -- Change set_next (m: like next) do next := m end feature -- Basic operation process_email (a_email: NOTIFICATION_EMAIL) do if active.is_available then active.process_email (a_email) import_errors (active) end if attached next as l_next and then l_next.is_available then l_next.process_email (a_email) import_errors (l_next) end end feature {NONE} -- Errors import_errors (a_mailer: NOTIFICATION_MAILER) do if attached a_mailer.last_errors as errs then across errs as ic loop report_error (ic.item) end end end note copyright: "2011-2013, Jocelyn Fiat, Javier Velilla, Olivier Ligot, Eiffel Software and others" license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)" source: "[ Eiffel Software 5949 Hollister Ave., Goleta, CA 93117 USA Telephone 805-685-1006, Fax 805-685-6869 Website http://www.eiffel.com Customer support http://support.eiffel.com ]" end