Re: [xacml-comment] Re: [xacml] Re: [xacml-comment] Public review comments for xacml-json-http-v1.0-csprd03: 5.2.5 The StatusCode object representation

I think the wording in the core spec is based on the culture of
    representing a sequence as a linked list, where there is a head and
    a tail in the form of a recursive structure (if you ever programmed
    in lisp, then you know what I mean). I guess in the XML schema
    context it is confusing because there is a construct called sequence
    in the schema language.

    

    If you want to be clear, you could change the wording to say that
    status codes may be nested.

    

    Best regards,

    Erik

    

    

    
On 2014-10-24 00:30, David Brossard
      wrote:

    

    
      
Yes of course, I had forgotten that. But then it begs
        the question: why a sequence?

      
On Oct 24, 2014 12:24 AM, "Steven Legg"
        <>
        wrote:
        

          Hi David,

          

          On 24/10/2014 9:05 AM, David Brossard wrote:

          
            Actually Steven, doesn't the schema allow this?

          
          

          No. An absent maxOccurs is assumed to be one.

          

          Regards,

          Steven

          

          
            That's the way I understand it. I just submitted the JSON
            profile before seeing your response. I would rather keep it
            as is.

            

            

            <StatusCode ...>

               <StatusCode ...>

                 <StatusCode ...>

                   <StatusCode .../>

                 </StatusCode>

               </StatusCode>

               <StatusCode ...>

                 <StatusCode ...>

                   <StatusCode .../>

                 </StatusCode>

               </StatusCode>

            </StatusCode>

            

            On Thu, Oct 23, 2014 at 11:19 PM, Steven Legg <
            <mailto:>>
            wrote:

            

            

                Hi David,

            

                On 24/10/2014 12:27 AM, David Brossard wrote:

            

                    Hi Glenn,

            

                    I think you are wrong. I took the wording verbatim
            from the core XACML spec which says that StatusCode does
            contain a sequence of StatusCode.

            

            

                The core spec is badly worded also, but at least the
            core spec has an XML Schema

                to clarify the intent.

            

                Contains "an optional sequence of minor status codes"
            immediately suggests to me

                something like:

            

                <StatusCode ...>

                   <StatusCode .../>

                   <StatusCode .../>

                   <StatusCode .../>

                </StatusCode>

            

                but the XML Schema tells me it is actually:

            

                <StatusCode ...>

                   <StatusCode ...>

                     <StatusCode ...>

                       <StatusCode .../>

                     </StatusCode>

                   </StatusCode>

                </StatusCode>

            

                which I wouldn't naturally regard as a sequence. I think
            Glenn makes a fair point.

                The text description has to stand on its own in the JSON
            profile and I agree with

                his suggested rewording.

            

                Regards,

                Steven

            

            

                    Am I missing the point?

            

                    Cheers,

                    David.

            

            

                         5.55 Element <StatusCode>

            

                    The <StatusCode> element contains a major
            status code value and an optional sequence of minor status
            codes.

            

                    <xs:element name="StatusCode"
            type="xacml:StatusCodeType"/>

            

                    <xs:complexType name="StatusCodeType">

            

                         <xs:sequence>

            

                                <xs:element ref="xacml:StatusCode"
            minOccurs="0"/>

            

                         </xs:sequence>

            

                         <xs:attribute name="Value" type="xs:anyURI"
            use="required"/>

            

                    </xs:complexType>

            

                    The <StatusCode> element is of StatusCodeType
            complex type.

            

                    The <StatusCode> element contains the
            following attributes and elements:

            

                    Value [Required]

            

                    See Section B.8 for a list of values.

            

                    <StatusCode> [Any Number]

            

                    Minor status code.  This status code qualifies its
            parent status code.

            

            

                    On Thu, Jun 12, 2014 at 6:14 PM, GRIFFIN, GLENN
            (GLENN) <
            <mailto:>
            <mailto:glenngriffin@research.__att.com <mailto:>>>
            wrote:

            

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                         Comment type [editorial | technical] ?
            editorial____

            

                         Impact [major | minor] ? minor____

            

                         The statement that ____

            

                                      “.. the StatusCode object may
            contain a sequence of StatusCode objects..”____

            

                         is confusing because a StatusCode may contain
            only one child StatusCode.  This may be a correct statement
            in an XML definition, but in general use the term “sequence”
            means a series, list, or array of multiple objects, so can
            be read as saying that the StatusCode can contain an array
            of StatusCodes.____

            

                         It would be better to change this text to
            read____

            

                                      “.. the StatusCode object may
            contain a StatusCode object..”____

            

                         __ __

            

            

            

            

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