RE: [ebxml-cppa] BPSS to WSDL mapping

[Cory Casanave <cory-c@enterprise-component.com>]

The BPSS is not "mapped" to the MHS, it is part of it.  The CPA & CPP
contain a BPSS instance.  The great thing about  this is that it is direct
execution of a collaborative model by the infrastructure, without mapping.
Anything else - such as WSDL/WSFL/XLANG will require a mapping.
Cory

> -----Original Message-----
> From:	Yuan, George [SMTP:George.Yuan@commerceone.com]
> Sent:	Monday, March 11, 2002 4:59 PM
> To:	'Cory Casanave'; 'OASIS ebxml-cppa'; 'ebtwg-bps@lists.ebtwg.org'
> Subject:	RE: [ebxml-cppa] BPSS to WSDL mapping
> 
> A follow-up question:  where can I find the BPSS and ebXML/TRP mapping
> spec?    -George
> 
> 	-----Original Message-----
> 	From: Cory Casanave [mailto:cory-c@enterprise-component.com]
> 	Sent: Sunday, March 10, 2002 7:50 PM
> 	To: 'OASIS ebxml-cppa'; 'ebtwg-bps@lists.ebtwg.org'
> 	Subject: [ebxml-cppa] BPSS to WSDL mapping
> 	
> 	
> 	In a web services seminary this week it became clear that the kinds
> of capabilities offered by ebXML were directly applicable to enterprise
> adoption of web services technologies and architectures.  In a panel
> session it was stated (by an IBM representative) that problems with ebXML
> were that the adoption was "to fast" and it was "Not linked to WSDL".
> Well, we can't go back and slow down the process, but we can fix the
> latter.
> 	 
> 	Perhaps in this upcoming release we could include a short section
> that would specify a mapping from BPSS to WSDL.  There are three basic
> issues with this mapping.  
> 	* BPSS specifies two way mappings where as WSDL is one-way
> 	* BPSS allows for nested collaborations
> 	* BPSS has choreography and other semantics.
> 	 
> 	To create a representation of the WSDL subset of BPSS semantics
> would not be that hard.  It would require the production of WSDL for each
> "side" of a binary collaboration.  The nested collaborations could be
> "flattened" into one WSDL interface or we could use multiple separate
> interfaces.  The choreography and other more advanced BPSS semantics would
> be lost in the WSDL representation but still binding on the services which
> implement them.
> 	 
> 	This is not a hard task - it could be done in a day or two.  I
> suggest that for greater acceptance in the industry we consider adding an
> XSLT transform to produce the required WSDL and make this part of the next
> revision - very soon.  This would help bind ebXML into the web services
> core technologies.  While we (DAT) don't have to bandwidth to do this in
> the sort time required, we would be happy to assist someone in such a
> task.
> 	 
> 	Regards,
> 	 
> 	Cory B. Casanave, President
> 	Data Access Technologies
> 	www.enterprise-component.com <http://www.enterprise-component.com/>
> 	(305) 234 7077
> 	 
>