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

[Mike Edwards <mike_edwards@uk.ibm.com>]

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

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