First integration of the new GW_ design more centralized on connector, and does not require specific feature on GW_APPLICATION depending on the connector.

So this is really more flexible this way, and much easier to write application supporting CGI, FCGI, Nino and so on .. as demonstrated in hello_world

This is a first version, more will come later, mainly migrating from Eiffel Web Reloaded to this Eiffel Web Framework project.

library/error/src/error_handler.e

@@ -0,0 +1,92 @@
+note
+	description : "Objects that handle error..."
+	legal: "See notice at end of class."
+	status: "See notice at end of class."
+	date: "$Date$"
+	revision: "$Revision$"
+
+class
+	ERROR_HANDLER
+
+create
+	make
+
+feature {NONE} -- Initialization
+
+	make
+			-- Initialize `Current'.
+		do
+			create {ARRAYED_LIST [ERROR]} errors.make (3)
+		end
+
+feature -- Status
+
+	has_error: BOOLEAN
+			-- Has error?
+		do
+			Result := count > 0
+		end
+
+	count: INTEGER
+		do
+			Result := errors.count
+		end
+
+	errors: LIST [ERROR]
+			-- Errors container
+
+feature -- Basic operation
+
+	add_error (a_error: ERROR)
+			-- Add `a_error' to the stack of error
+		do
+			errors.force (a_error)
+		end
+
+	add_error_details, add_custom_error (a_code: INTEGER; a_name: STRING; a_message: detachable STRING_32)
+			-- Add custom error to the stack of error
+		local
+			e: ERROR_CUSTOM
+		do
+			create e.make (a_code, a_name, a_message)
+			add_error (e)
+		end
+
+feature -- Access
+
+	as_single_error: detachable ERROR
+		do
+			if count > 1 then
+				create {ERROR_GROUP} Result.make (errors)
+			elseif count > 0 then
+				Result := errors.first
+			end
+		end
+
+feature -- Element changes
+
+	concatenate
+			-- Concatenate into a single error if any
+		do
+			if count > 1 and then attached as_single_error as e then
+				wipe_out
+				add_error (e)
+			end
+		end
+
+	reset, wipe_out
+		do
+			errors.wipe_out
+		end
+
+note
+	copyright: "Copyright (c) 1984-2011, 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