Comment on Sec 5.1.21 Extension Part

[Subbu Allamaraju <subbu@bea.com>]

[Sending on behalf of Nate Lipke - for some reason his emails are bouncing.]

5.1.21 ExtensionPart Type
The locations field should be better defined.
We should standardize on a syntax and use stronger language. E.g. the 
locations field MUST be specified as ...
Options:

     * Use the schema type name  (maybe the change the name to 
parentTypes reflect this): EmployerInfo
     * Use a hierarchical format for the extensions to point the actual 
element: /getMarkup/userContext/profile/EmployerInfo
           o Possibly allow for more complex locations: 
/*/userContext/profile/EmployerInfo
           o Should these be Qnames: 
/wsrp:getMarkup/wsrp:userContext/wsrp:profile/wsrp:EmployerInfo
           o Should we use a XPath or subset of XPath?
           o XQuery?

A problem with the first choice is highlighted by the example given:
The example refers to "Contact" which is a type not a location. There 
are two fields (businessInfo and homeInfo) with the Contact type under 
UserProfile.  Does this refer to both fields? Also what message should 
this field be expected in. And how can an implementor determine this 
from the the ServiceDescription.


Thanks,

Nate
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