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Subject: [NEW ISSUE] Need for a Callback annotation for WSDL interface files

Raiser:                 Mike Edwards

Target:                SCA Assembly Specification


(Arose from discussions in the Bindings TC)

It is noted that for a service with a callback, if it is defined using a Java interface, there is a @Callback annotation which
allows the fact that the forward service interface has a related callback interface to be captured in the definition of the interface.

However, if the interface is defined using a WSDL interface, there is no equivalent function.  

It would be very useful if it were possible to annotate a WSDL interface in such a way that the forward interface could be
annotated with a pointer indicating that there is a callback interface and pointing at that interface.


(General direction)
Since WSDL is extensible, use that extensibility to annotate a WSDL 1.1 portType, either via an new attribute or via a
new child element, which is labelled "callback" and which has a value that is the QName of a second portType which
declares the callback interface.

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

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