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Subject: Re: [sca-assembly] [ASSEMBLY-89] Need for a Callback annotation for WSDLinterface files - PROPOSAL update 2



Folks,

It was pointed out to me that we removed support of WSDL 2.0 from <interface.wsdl/> in a previous
resolved issue.  So this is an updated version of the proposal that removes all mention of WSDL 2.0
from the proposal


Resolve Issue 89 by adding the following material to the Assembly specification
sca-assembly-1.1-spec-cd01-rev3.doc


Add to the end of Section 8.2, following line 2521:
----------------------------------------------------------------------------
Note that an interface document such as a WSDL file or a Java interface can contain annotations that declare a
callback interface for a particular interface.  Whenever such an interface is used in the declaration of an <interface/>
element in SCA, it MUST be treated as being bidirectional with the declared callback interface.  [ASM80010]  In such
cases, there is no requirement for the <interface/> element to declare the callback interface explicitly.

Where a component uses an implementation and the component configuration declares an interface for a service or a
reference, if the matching service or reference declaration in the component type declares an interface which has a  
callback interface, then the component interface declaration MUST also declare a compatible interface with a
compatible callback interface. [ASM80011]

Where a composite declares an interface for a composite service or a composite reference, if the promoted service
or reference has an interface which has a callback interface, then the interface declaration for the composite service
or the composite reference MUST also declare a compatible interface with a compatible callback interface. [ASM80012]

See Section 6.4 Wires for a definition of "compatible interfaces".

----------------------------------------------------------------------------

I note that there is no normative description of the interface.wsdl element, so:
Add new subsection to Section 8, following line 2635:
----------------------------------------------------------------------------

8.5 WSDL Interface Type

The WSDL interface type is used to declare interfaces for services and for references, where the interface is defined in
terms of a WSDL document.  This WSDL document MUST conform to the WSDL 1.1 specification.  [ASM80009]
An interface is defined in terms of a  WSDL Port Type.

A WSDL interface is declared by an interface.wsdl element.  The following shows the pseudo-schema for the interface.wsdl element:

<!-- ConstrainingType schema snippet -->

<interface.wsdl interface="xs:anyURI"

                     callbackInterface="xs:anyURI"?>


The interface.wsdl element has the following attributes:



8.5.1 Example of interface.wsdl

<interface.wsdl interface=”http://www.stockquote.org/StockQuoteService#wsdl.porttype(StockQuote)”

                callbackIinterface=”http://www.stockquote.org/StockQuoteService#wsdl.porttype(StockQuoteCallback)”/>

This declares an interface in terms of the WSDL 1.1 port type "StockQuote" with a callback interface defined by the "StockQuoteCallback" port type.

----------------------------------------------------------------------------


Yours,  Mike.

Strategist - Emerging Technologies, SCA & SDO.
Co Chair OASIS SCA Assembly TC.
IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.
Phone & FAX: +44-1962-818014    Mobile: +44-7802-467431  
Email:  mike_edwards@uk.ibm.com


From: David Booz <booz@us.ibm.com>
To: sca-assembly@lists.oasis-open.org
Date: 19/11/2008 21:45
Subject: Re: [sca-assembly] [ASSEMBLY-89] Need for a Callback annotation for WSDL interface files - PROPOSAL






What happens if both @callbackInterface and @callback are in use at the same time for a service or reference and they point to different interfaces? I would presume that's an error.

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

Mike Edwards ---11/19/2008 09:08:00 AM---Folks, The following is a proposal for resolving Issue 89:
 

From:

Mike Edwards <mike_edwards@uk.ibm.com>

To:

"OASIS Assembly" <sca-assembly@lists.oasis-open.org>

Date:

11/19/2008 09:08 AM

Subject:

[sca-assembly] [ASSEMBLY-89] Need for a Callback annotation for WSDL interface files - PROPOSAL







Folks,

The following is a proposal for resolving Issue 89:

(sca-assembly-1.1-spec-cd01-rev3.doc)

Add the following at the end of Section 8.4, following line 2678:

SCA defines an attribute which is used to indicate that a given WSDL Port Type element (WSDL 1.1) or WSDL Interface
element (WSDL 2.0) has an associated callback interface. This is the @callback attribute, which can be applied to
a WSDL <portType/> element or a WSDL <interface/> element.

The @callback attribute is defined as a global attribute in the SCA namespace, as follows:  

<attribute name="callback" type="QName"/>

The value of the @callback attribute is the QName of a Port Type (WSDL 1.1) or the QName of an Interface (WSDL 2.0).
The Port Type or the Interface declared by the @callback attribute is the callback interface to use for the service which
is annotated by the @callback attribute.

Here is an example of a porttype element with a callback attribute:  

<portType name="LoanService" sca:callback="foo:LoanServiceCallback">  

<operation name="apply">  

<input message="tns:ApplicationInput"/>  

<output message="tns:ApplicationOutput"/>  

</operation>  

...  

</portType>


Yours, Mike.

Strategist - Emerging Technologies, SCA & SDO.
Co Chair OASIS SCA Assembly TC.
IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.
Phone & FAX: +44-1962-818014 Mobile: +44-7802-467431
Email: mike_edwards@uk.ibm.com


 



Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number 741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU  




 



 

 




 

Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number 741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU



 








Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number 741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU








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