Re: [sca-j] ISSUE-167: SCA Spring C & I specification should make typeattribute as optional for <sca:service/> element

[David Booz <booz@us.ibm.com>]

http://www.osoa.org/jira/browse/JAVA-167

Dave Booz
STSM, BPM and SCA Architecture
Co-Chair OASIS SCA-Policy TC and SCA-J TC
"Distributed objects first, then world hunger"
Poughkeepsie, NY (845)-435-6093 or 8-295-6093
e-mail:booz@us.ibm.com

Ramkumar R1 ---06/24/2009 08:13:02 AM---Raiser: Ramkumar Ramalingam Target: SCA Spring C&I

From:	Ramkumar R1 <ramkumar_rj@in.ibm.com>
To:	sca-j@lists.oasis-open.org
Date:	06/24/2009 08:13 AM
Subject:	[sca-j] NEW ISSUE: SCA Spring C & I specification should make type attribute as optional for <sca:service/> element

---

Raiser:   Ramkumar Ramalingam

Target:  SCA Spring C&I 

Description:
The SCA Spring Client and Implementation specification should make the type attribute as optional for the <sca:service/> element in the SCA Spring Extension Schema. 

Lets assume a scenario where the existing spring application is used as a SCA component, in such cases its possible to have spring beans that do not have any implemented interfaces. So when the user wants to explicitly expose a particular spring bean (which does not implement any interface) as sca service using <sca:service/> element by just modifying the spring context xml file, then the current <sca:service/> element does not allow the user to do the same, as it mandates to specify the interface implemented by the bean as value for its required type attribute. 

Proposal: 
For Java implementations, in absence of annotations, the impl class is used as the interface (§1.2.1.3 of the OSOA Java Impl spec). 
Similarly in this case, the SCA Spring C&I specs should make the "type" attribute as optional for the <sca:service/> element, 
and allow the users to expose a bean without any implemented interface as service, by assuming that the impl class to be used as interface for the service. 

Thanks & Regards,

R Ramkumar
Open Source SOA Development - Apache Tuscany
Phone : 91-80-41927623
Email  : ramkumar_rj@in.ibm.com