[Fiware-wpa] FIWARE: FMC Block diagrams: Reference_Sheet-Block_Diagram.pdf (application/pdf Object)

[Leidig, Torsten]

Hi Dénes,

You're right, I was a  bit lazy. R actually means directed request-response communication.  For me it was somehow synonym with RPC, but this is not completely correct.

However, it is important to understand that this R channel is covering SOAP/WSDL as well as RESTful interfaces (and many other non-web interfaces).

Regards,
Torsten

From: Bisztray, Denes (NSN - HU/Budapest) [mailto:denes.bisztray at nsn.com]
Sent: Dienstag, 28. Februar 2012 07:56
To: Leidig, Torsten; fiware-wpa at lists.fi-ware.eu; fiware-wpl at lists.fi-ware.eu
Subject: RE: [Fiware-wpa] FIWARE: FMC Block diagrams: Reference_Sheet-Block_Diagram.pdf (application/pdf Object)

Dear Thorsten,

I agree with most of your points, lots of people doing it wrong. However, as far as I understood from the link you just provided the R with small arrow simply indicates the direction of the request-response communication, no RPC is mentioned anywhere. Quoting the pdf "Agent A1 can request information from agent A2 which in turn
responds (e.g. function calls or http request/responses)".

Best,
Dénes



From: fiware-wpa-bounces at lists.fi-ware.eu [mailto:fiware-wpa-bounces at lists.fi-ware.eu] On Behalf Of ext Leidig, Torsten
Sent: Monday, February 27, 2012 5:47 PM
To: fiware-wpa at lists.fi-ware.eu; fiware-wpl at lists.fi-ware.eu
Subject: [Fiware-wpa] FIWARE: FMC Block diagrams: Reference_Sheet-Block_Diagram.pdf (application/pdf Object)

http://www.fmc-modeling.org/download/notation_reference/Reference_Sheet-Block_Diagram.pdf

Dear Open Specification Writers,

while having a quick look at different Open Specifications in the private Wiki I noticed that there is some confusion according to the meaning FMC block diagrams.

Please have a look at this cheat sheet. The semantics is actually very simple. However, it would be nice if we can use it consistently across the different Specs.

So for example:


 *   The dotted rounded rectangle means: structure variance (parts of the diagram can be there multiple times, sometimes controlled by an agent.)
 *   If you want to subsume parts of the diagram you should us a plain border box (maybe with a light grey background)
 *   The R with a small arrow means an RPC-like semantics of a channel between two components (agents)
 *   Two components can only be connected via a channel. (no direct lines between them)
 *   A component (agent) can read/write from/to a storage (without a channel in between)


Best regards,

Torsten


Dr. Torsten Leidig
SAP Research Center CEC Karlsruhe
SAP AG
Vincenz-Prießnitz-Str. 1
76131 Karlsruhe
T +49 6227 7 52535
F +49 6227 78 29753
E torsten.leidig at sap.com<mailto:torsten.leidig at sap.com>
http://www.sap.com
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