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Subject: [xacml] function semantics




From: Simon Godik <simon@godik.com>
To: xacml@lists.oasis-open.org
Date: Thu, 22 Aug 2002 16:56:00 -0700









I would like to get some clarification on function 
semantics.
 
For example, if I want to compare 2 string values 
in the context for equality
I'd like to use 'string-equal' function with 2 
designator arguments.
 
Designators select a sequence of values from the 
context, but arguments to
the 'string-equal' take single-valued string. (see 
function table spreadsheet).
 
So simple syntax: 'string-equal subj-attr-desig 
subj-attr-desig' is not legal.
How is it supposed work?
 
The other question I have is about sets and 
sequences. They are used
throughout function table, and I'm not sure what is 
difference.
 
Simon
 












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