Re: [xacml] Suggestions for a JSON representation of the XACML request - JSON profile

On 05/17/2012 07:56 AM, David Brossard wrote:
    Hi everyone,

      

      Lots of great comments. Thanks. I will take them into account in
      the next flavor of the example I had written. The example given
      was indeed meant to be pseudo-code.

      

      Fundamental points from our conversation so far:

      (a) the JSON request/response should be a reflection of the XML
      version. One can translate in either direction without any loss

    
    I agree.  JSON probably does not represent all the richness of xml. 
    But IMO we can probably get closer to what we have in the xml world
    in xacml. 

    

    (b) Use of constants vs. use of assumed (default)
      values: I still think assuming values is nicer. It makes creating
      requests by hand so much easier. It reduces the size of a request
      as well and increases readability.

    
    I agree.  Reasonable defaults is the way to go in crafting requests.

    

    (c) short attribute Ids vs. longer (fully qualified
      ones): Danny you say that shorter names would lead to possible
      clashes. But I have never run into that issue w/ customers who
      tend to live in a closed world where all attributes are clearly
      defined.

      

    
    For the standard xacml attributes, short forms (that are normative)
    in the json world will be beneficial. Custom attributes will have to
    go the long form.

    

    My example, in fact, should have skipped the datatype
      and the issuer (as Ray pointed out later).

      

      I will get back to you w/ additional work in the coming weeks.
      Unfortunately, due to a prior commitment, I won't be able to
      attend today's call.

      

    
    I can support you in this endeavor.  I have been meaning to try out
    the json representations of xacml.

    

    Cheers,

      David.

      

      
On Thu, May 10, 2012 at 3:15 PM, <>
        wrote:

        
          
David,

            

            

            From: 
            [mailto:]
            On Behalf Of David Brossard

            Sent: Thursday, May 10, 2012 3:21 AM

            To: xacml

            Subject: [xacml] Suggestions for a JSON representation of
            the XACML request - JSON profile

            

          

          
> I've had a look at the reference
            definition of a XACML request defined in 5.42 Element
            <Request> on line 2726 of the specification PDF.

            >

            > I want to make a simple JSON representation.

            

          

          Did you lo
        
 

        ok
          at existing XML->JSON mapping approaches?

          http://wiki.open311.org/index.php?title=JSON_and_XML_Conversion

          

            

              

              Thanks,

              Ray