Update examples/restbucksCRUD/readme.md

examples/restbucksCRUD/readme.md

@@ -1,6 +1,7 @@
 Restbuck Eiffel Implementation based on the book of REST in Practice
 ====================================================================
-This is an implementation of CRUD pattern for manipulate resources
+This is an implementation of CRUD pattern for manipulate resources, this is the first step to use
+the HTTP protocol as an application protocol instead of a transport protocol.
 <table>
 <TR><TH>Verb</TH>         <TH>URI or template</TH>     <TH>Use</TH></TR>
 <TR><TD>POST</TD>         <TD>/order</TD>              <TD>Create a new order, and upon success, receive a Locationheader specifying the new order's URI.</TD></TR>
@@ -9,7 +10,80 @@ This is an implementation of CRUD pattern for manipulate resources
 <TR><TD>DELETE</TD>       <TD>/order/{orderId}</TD>    <TD>Logically remove the order identified by the given URI.</TD></TR>
 </table>
 
+RESTBUCKS_SERVER
+---------------
+
+	class
+		RESTBUCKS_SERVER
+	
+	inherit
+		ANY
+	
+		URI_TEMPLATE_ROUTED_SERVICE
+	
+		DEFAULT_SERVICE
+			-- Here we are using a default connector using the default Nino Connector,
+			-- but it's possible to use other connector (CGI or FCGI).
+	
+	create
+		make
+	
+	feature {NONE} -- Initialization
+	
+		make
+			-- Initialize the router (this will have the request handler and 
+			-- their context).
+			do
+				initialize_router
+				make_and_launch
+			end
+	
+		create_router
+			do
+				create router.make (2)
+			end
+	
+		setup_router
+			local
+				order_handler: ORDER_HANDLER [REQUEST_URI_TEMPLATE_HANDLER_CONTEXT]
+			do
+				create order_handler
+				router.map_with_request_methods ("/order", order_handler, <<"POST">>)
+				router.map_with_request_methods ("/order/{orderid}", order_handler, <<"GET", "DELETE", "PUT">>)
+			end
+	
+	feature -- Execution
+	
+		execute_default (req: WSF_REQUEST; res: WSF_RESPONSE)
+				-- I'm using this method to handle the method not allowed response
+				-- in the case that the given uri does not have a corresponding http method
+				-- to handle it.
+			local
+				h : HTTP_HEADER
+				l_description : STRING
+				l_api_doc : STRING
+			do
+				if req.content_length_value > 0 then
+					req.input.read_string (req.content_length_value.as_integer_32)
+				end
+				create h.make
+				h.put_status ({HTTP_STATUS_CODE}.method_not_allowed)
+				h.put_content_type_text_plain
+				l_api_doc := "%NPlease check the API%NURI:/order METHOD: POST%NURI:/order/{orderid} METHOD: GET, PUT, DELETE%N"
+				l_description := req.request_method + req.request_uri + " is not allowed" + "%N" + l_api_doc
+				h.put_content_length (l_description.count)
+				h.put_current_date
+				res.set_status_code ({HTTP_STATUS_CODE}.method_not_allowed)
+				res.write_header_text (h.string)
+				res.write_string (l_description)
+			end
+	
+	end
+
+
+
 How to Create an order
+----------------------
 
     * Uri: http://localhost:8080/order
     * Method: POST