Re: [xacml] [CR] Target Match Semantics Section 4 & 5. Forwardedmessage from Polar Humenn.

[Anne Anderson <Anne.Anderson@Sun.com>]

OK, I withdraw my quibble.  We might want to add words near this
table to make it clear that the Condition need not be evaluated
at all if the Target evaluates to False or Indeterminate.

Anne

On 19 September, Polar Humenn writes: Re: [xacml] [CR] Target Match Semantics Section 4 & 5. Forwarded  message from Polar Humenn.
 > From: Polar Humenn <polar@syr.edu>
 > To: Anne Anderson <Anne.Anderson@Sun.COM>
 > Subject: Re: [xacml] [CR] Target Match Semantics Section 4 & 5. Forwarded
 >  message from Polar Humenn.
 > Date: Thu, 19 Sep 2002 13:23:05 -0400 (EDT)
 > 
 > 
 > Anne, "Not evaluated" isn't a value logically speaking.
 > I could evaluate them in parrallel.
 > 
 > Also, if I'm crafty, and my data model supports it, I might evaluate all
 > the conditions before, for all possible targets, and just use indexes on
 > the Target Matches to select the answers.
 > 
 > The proper term would be "don't care", usually denoted by the circle with
 > a slash thru it, but that equivalent to listing all possible values.
 > 
 > Cheers,
 > -Polar
 > 
 > On Thu, 19 Sep 2002, Anne Anderson wrote:
 > 
 > > I think this table is still not correct.  If the target is
 > > "False" or "Indeterminate", then the "Condition" is not even
 > > evaluated.
 > >
 > > I suggest:
 > >
 > >       Target        Condition         Rule
 > >       True           True             Effect
 > >       True           False            Not Applicable
 > >       True           Indeterminate    Indeterminate
 > >       False          [not evaluated]  Not Applicable
 > >       Indeterminate  [not evaluated]  Indeterminate
 > >
 > > Anne
 > > ------- start of forwarded message -------
 > > From: Polar Humenn <polar@syr.edu>
 > > To: XACML <xacml@lists.oasis-open.org>
 > > Subject: Re: [xacml] [CR] Target Match Semantics Section 4 & 5
 > > Date: Wed, 28 Aug 2002 17:48:05 -0400 (EDT)
 > >
 > > ....
 > >
 > > > The rule truth table is shown in Table 1.
 > > >
 > > > Target        Condition         Rule
 > > > True           True             Effect
 > > > True           False            Not Applicable
 > > > True           Indeterminate    Indeterminate
 > > > False          True             Not Applicable
 > > > False          False            Not Applicable
 > > > False          Indeterminate    Indeterminate
 > >                                   ^^^^^^^^^^^^
 > >                                   Not Applicable
 > > > Indeterminate  True             Indeterminate
 > > > Indeterminate  False            Indeterminate
 > > > Indeterminate  Indeterminate    Indeterminate
 > > >
 > > > 	Table 1 - Rule truth table
 > >
 > >
 > >
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 > > ------- end of forwarded message -------
 > >
 > > --
 > > Anne H. Anderson             Email: Anne.Anderson@Sun.COM
 > > Sun Microsystems Laboratories
 > > 1 Network Drive,UBUR02-311     Tel: 781/442-0928
 > > Burlington, MA 01803-0902 USA  Fax: 781/442-1692
 > >
 > >
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-- 
Anne H. Anderson             Email: Anne.Anderson@Sun.COM
Sun Microsystems Laboratories
1 Network Drive,UBUR02-311     Tel: 781/442-0928
Burlington, MA 01803-0902 USA  Fax: 781/442-1692