[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.

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