Fw: [xacml] [Polar] PH09: New section 7.4.2 Attributes

'or' is not a bag function, so it does not care about any bags: empty or
not.
one of it's arguments may raise an indeterminate but it does not have
anything to do with bags.

Simon

> ----- Original Message -----
> From: "Seth Proctor" <>
> To: "Simon Godik" <>
> Cc: <>
> Sent: Monday, November 04, 2002 10:46 AM
> Subject: Re: [xacml] [Polar] PH09: New section 7.4.2 Attributes
>
>
> >
> > On Mon, Nov 04, 2002 at 10:22:56AM -0800, Simon Godik wrote:
> > > functions that do not take attribute bags as arguments do not care
about
> > > empty bags.
> >
> > Untrue. An or function, for instance, is supposed to go through a list
of
> > inputs until it finds a true value. If one of those inputs fails to find
> any
> > values, and the MustBePresent attribute is false, then an empty bag is
> > returned. This is done precisely so that the function may skip over that
> > input and continue on (whereas it might choose to do something different
> in
> > an error case). Functions that do not take attribute bags as arguments
may
> > still need to recognize the special case of an empty bag.
> >
> >
> > seth
> >
> >
> >
>