RE: D-AG004: Ensures platform independence

Abbie,
 
No problem.
(BTW, I knew JAVA as just an example.
I just wanted us to steer away from any potential lanugage dependency,
and towards some universal message format.)
 
Cheers,
 
Joe
==========

 -----Original Message----- 
 From: Abbie Barbir [mailto:abbieb@nortelnetworks.com] 
 Sent: Tue 3/19/2002 11:46 AM 
 To: Joseph Hui; michael.mahan@nokia.com; Austin.D@ic.grainger.com 
 Cc: www-ws-arch@w3.org; Christopher Ferris 
 Subject: RE: D-AG004: Ensures platform independence
 
 

 joe, 

 thanks, i agree, 
 i have tried to state that by saying well defined interface. IMHO this provides the flexibility of using messaging systems such as SOAP. (I emphasize the word such as ...)

 abbie 


 > -----Original Message----- 
 > From: Joseph Hui [mailto:jhui@digisle.net] 
 > Sent: Tuesday, March 19, 2002 2:34 PM 
 > To: Barbir, Abbie [CAR:1A00:EXCH]; michael.mahan@nokia.com; 
 > Austin.D@ic.grainger.com 
 > Cc: www-ws-arch@w3.org; Christopher Ferris 
 > Subject: RE: D-AG004: Ensures platform independence 
 > 
 > 
 > Hi Abbie, 
 >  
 > I think platform independence can be better ensured without 
 > introducing a dependence on JAVA.  At the lower level, endpoints 
 > are communicate over socket connections, and socket semantics 
 > are widely supported in many languages: C/C++/C#, JAVA, ... 
 > IMHO a better approach to platform independence is through better 
 > messaging, such as adopting a ubiquetous message format, say SOAP. 
 >  
 > Joe Hui 
 > Exodus, a Cable & Wireless service 
 > ============================= 
 > ----Original Message----- 
 > From: Abbie Barbir [mailto:abbieb@nortelnetworks.com] 
 > Sent: Tue 3/19/2002 7:48 AM 
 > To: michael.mahan@nokia.com; Austin.D@ic.grainger.com 
 > Cc: www-ws-arch@w3.org; Christopher Ferris 
 > Subject: RE: D-AG004: Ensures platform independence 
 > 
 > 
 > 
 >       Mike and all, 
 >        
 >       Per the last teleconference call D-AG004 is still open 
 > and must be closed by the next call. 
 >       In this e-mail I attempt to close the issues regarding 
 > the design Goal. 
 >       The goal as stated 
 >       " 
 >       D-AG0004 
 >       ensures platform independence of web services 
 > components in a way that does not preclude any programming 
 > model nor assume any particular mode of communication between 
 > the individual components 
 > 
 >       " 
 > 
 >       In my original e-mail I have riased some issues 
 > regarding the goal, but unfortunatly I did not get good track. 
 >        
 >       So here are my $.002, 
 >        
 >       Discussion: 
 >       ------------------ 
 >        
 >       In order to ensure platform independence, we need the following: 
 >       1. Adopt the use of platform independent languages such 
 > as JAVA. 
 >       2. Have very well defined interfaces to web components 
 > that are general and could be invoked using appropriate protocols. 
 >       3. Try to use XML and other markup techniques that 
 > ensures the ability to invoke web components using variaty of 
 > protocols. 
 >        
 >        
 >       The design goal can coexist with D-AG0003: is 
 > sufficiently extensible and  with D-AG0005:provides 
 > simplicity and ease-of-use that does not impose high barriers 
 > to entry for users of web services. In my opnion, the 
 > appropriate designs for platform independence interfaces can 
 > help the above two stated golas. 
 >        
 >        
 >       Furtheremore, Some issues were raised regarding the 
 > interdependecne of D-AG004 and D-AG011. Here D-AG011 is restated: 
 >        
 >       CURRENT GOAL STATEMENT: 
 >       Web Services are consistent with the existing web and 
 > its heterogenous environment and distributed architecture to 
 > the greatest extent possible. 
 >        
 >       Discussion -2: 
 >       ------------------- 
 >        
 >       I really do think that the requirement of platform 
 > independence does contradict the above design goal. In my 
 > view designing for platform independence must be consistant 
 > with D-AG011. So in this regard, D-AG011 can feed into D-AG004. 
 >        
 >       Crtitical Success Factors: 
 >       ---------------------------------- 
 >        
 >       The design goal can be achieved through the insistance 
 > on using platform independent development tools and languages 
 > such as XML and JAVA. The interfaces to web components must 
 > also be properly designed. 
 >        
 >       Derived Requirements: 
 >       -------------------------------- 
 >       1. Consistent definition of web components 
 >       2. Good definition of web components Interfaces. 
 >       3. Use XML based protocols for invoking the web components. 
 >        
 >        
 >       Current Recommendation: 
 >       -------------------------------------- 
 >       The goal should stay as written 
 >        
 >        
 >       cheers 
 >       abbie 
 >        
 >        
 >       
 >       
 > 
 >               -----Original Message----- 
 >               From: michael.mahan@nokia.com 
 > [mailto:michael.mahan@nokia.com] 
 >               Sent: Thursday, March 14, 2002 10:48 AM 
 >               To: Austin.D@ic.grainger.com; Barbir, Abbie 
 > [CAR:1A00:EXCH] 
 >               Cc: www-ws-arch@w3.org 
 >               Subject: RE: D-AG004: Ensures platform independence 
 >               
 >               
 >               Hi Abbie, 
 >                
 >               In message [1], I questioned whether platform 
 > independence goal is separate from D-AG0011. Can you comment on that. 
 >                
 >               Thx, Mike 
 >                
 >                
 >               [1] 
 > http://lists.w3.org/Archives/Public/www-ws-arch/2002Mar/0181.h 
 > tml 
 > <http://lists.w3.org/Archives/Public/www-ws-arch/2002Mar/0181.html> 
 > 
 >                       -----Original Message----- 
 >                       From: ext Austin, Daniel 
 > [mailto:Austin.D@ic.grainger.com] 
 >                       Sent: March 12, 2002 05:41 PM 
 >                       To: 'Abbie Barbir' 
 >                       Cc: 'www-ws-arch@w3.org' 
 >                       Subject: RE: D-AG004: Ensures platform 
 > independence 
 >                       
 >                       
 >                       Hi Abbie, 
 >                        
 >                           The text of this goal was quoted 
 > directly from the group charter, so we have to be careful 
 > about amending it. But I think these are good questions. What 
 > are the answers? 
 >                        
 >                       Regards, 
 >                        
 >                       D- 
 > 
 >                               -----Original Message----- 
 >                               From: Abbie Barbir 
 > [mailto:abbieb@nortelnetworks.com] 
 >                               Sent: Tuesday, March 12, 2002 1:19 PM 
 >                               To: www-ws-arch@w3.org 
 >                               Cc: Abbie Barbir 
 >                               Subject: D-AG004: Ensures 
 > platform independence 
 >                               
 >                               
 > 
 > 
 >                               This message kicks off 
 > discussion on goal 4, "ensures platform independence of web services" 
 > 
 >                               Please comment on goal wording, 
 > success factors, relation to other goals, etc. 
 > 
 >                               The goal as stated 
 >                               " 
 >                               D-AG0004 
 >                               ensures platform independence 
 > of web services components in a way that does not preclude 
 > any programming model nor assume any particular mode of 
 > communication between the individual components 
 > 
 >                               " 
 > 
 >                               Discussion: 
 >                               -------------- 
 >                               I think that the goal as stated 
 > provides a nobel idea that software designers would like to 
 > comply with. However, it seems to me that 
 > 
 >                               1. A proper definition of the 
 > term components must be provided, where the line would be 
 > drawn on where and how the platform idependence could be achieved. 
 > 
 >                               2. In addition, does plateform 
 > independence means the independence from the actual operating 
 > system and/or programming language. 
 > 
 >                               3. In order to be able not to 
 > preclude any programming model, what kind of interface do we 
 > assume for web services components? 
 > 
 >                               4. In order not to assume any 
 > mode of communications between the individual components, how 
 > would data be exchanged (if need be ?) 
 > 
 >                               
 >                               Other issues: 
 >                               ------------- 
 > 
 >                               5. Is this redundant with 
 > D-AG0003: is sufficiently extensible to allow for future 
 > evolution of technology and of business goals 
 > 
 >                                when combined with 
 > D-AG0005:provides simplicity and ease-of-use that does not 
 > impose high barriers to entry for users of web services 
 > 
 >                               Critical success factors 
 >                               ------------------------ 
 > 
 >                               How platform independence could 
 > be measured, verified and achieved? and who will verify that? 
 > 
 >                               cheers 
 >                               abbie 
 > 
 >

Received on Tuesday, 19 March 2002 15:03:23 UTC