Re: [xacml] Media types: version parameter?

Agreed. Similarly I don't see a downside to accounting for this. 

b



On Feb 24, 2012, at 6:08 AM, <> wrote:

> All,
> 
> 
>> -----Original Message-----
>> From:  [mailto:] On
>> Behalf Of Bill Parducci
>> Sent: Thursday, February 23, 2012 8:29 PM
>> To: XACML TC
>> Subject: [xacml] Minutes for XACML TC Meeting 23 Fenruary 2012
>> 
> 
>> Media types
>>  Ray got doc started, Robin from Oasis offered to help. Need to get
>>  types defined to move forward. Ray asked if there were XACML version
>>  dependencies on the types. Hal noted this was not necessary for XML
>>  but noted that we need to mechanism for JSON is separate, Ray's
>>  initial types should cover these cases.
> 
> Even though an XACML policy/request/response includes a namespace that indicates the version used, there may be value in a separate version identification mechanism.
> 
> A good example is content negotiation [1]. One client can request a version 2.0 response from the PDP, whereas a different client can request a version 3.0 response. The same PDP could answer both clients in their preferred manner. This makes it a lot easier to evolve a PDP, since not all clients need to be upgraded right away.
> 
> Thanks,
> Ray
> 
> [1] http://en.wikipedia.org/wiki/Content_negotiation
> 
> 
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