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RE: [saml-dev] Quick question about AttributeValue

From
Hal Lockhart <>
Date
2014-06-10T16:02:18+00:00
ID
422302e9-21c5-44fa-9a8f-6147b1113f3a@default
Thread
RE: [saml-dev] Quick question about AttributeValue
I have seen deployments where the mere existence of an Attribute with no values was used to indicate something about the Subject.

Hal

> -----Original Message-----
> From: Cantor, Scott [mailto:]
> Sent: Wednesday, June 04, 2014 3:13 PM
> To: Nate Klingenstein; 
> Subject: Re: [saml-dev] Quick question about AttributeValue
> 
> On 6/4/14, 3:02 PM, "Nate Klingenstein" <> wrote:
> 
> >Hi all,
> >
> >It looks like the specification explicitly goes out of its way to
> >permit attributes with zero values, e.g. an <AttributeValue/> element
> >(core, 2.7.3.1/2.7.3.1.1).  What was the rationale for this?
> 
> That's not zero values, that's an empty value. And an xsi:nil is an
> explicitly null value. Neither is the same as saying "no values", which
> is just the absence of any elements.
> 
> The rationale was simply that people wouldn't agree to restrict it. I
> personally would have barred empty or null because there's no case I've
> ever encountered where it does anything but create work for a
> recipient.
> 
> -- Scott
> 
> 
> 
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