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Subject: Re: [xacml] Summary of the 3 proposed syntaxes for Policy Template


On 16/10/2012 7:48 PM, Jean-Paul Buu-Sao wrote:
Thanks Steven for checking the syntax across the board.

Option2: I would like to suggest the following name changes:

  On the Policy Template:
     ValueParameter  to be renamed to SingleParameter

I prefer ValueParameter over SingleParameter because "value" is an existing
concept in XACML and "single" begs the question "single what?".

     BagParameter  OK
  On the Policy Template Data:
    ActualValueParameter to be renamed SingleParameterValue
    ActualBaggParameter to be renamed BagParameterValue

At this point in the discussions I was going for clarity over aesthetics.
If option 2 becomes the chosen way forward, then there are a number of ways
of naming the actual parameters.

(a) If ValueParameter and BagParameter in templates are in a different namespace
    from the template data, then the template data could also use the same names
    for the actual parameters. That could be confusing though.

(b) Instead of ActualValueParameter we could have:
        <Parameter single="true">...</Parameter>
        <Parameter bag="false">...</Parameter>

    Instead of ActualBagParameter we could have
        <Parameter single="false">...</Parameter>
        <Parameter bag="true">...</Parameter>

    I would suggest that "false" be the default value of the XML attribute in
    either case. Instead of Parameter we could have ParameterValue or

(c) ParameterValue instead of ActualValueParameter,
    BagParameterValue instead of ActualBagParameter.

(d) Any other pair of unused names, such as what you have suggested.


What do you think?

-----Original Message-----
From: Steven Legg [mailto:steven.legg@viewds.com]
Sent: Tuesday, October 16, 2012 08:27
To: Jean-Paul Buu-Sao
Cc: XACML-TC-mailinglist
Subject: Re: [xacml] Summary of the 3 proposed syntaxes for Policy Template


Thanks for putting up the summary. I've made corrections to Option 2, as well as fixing syntax errors throughout the page.


On 12/10/2012 12:39 AM, Jean-Paul Buu-Sao wrote:

There has been an intense and healthy discussion around the syntax for
Policy Templates recently, thanks to Danny Steven and Erik. I thought that I should summarize the various proposals on the Wiki:


Danny, Steven, Erik, please apologize if I missed on of your points. I
still have to double check that OOI have not forgotten anything
against the email thread (I fact I have, but will correct before today close of business).



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