RE: [xacml] IIC012: syntax-error or processing-error?

[Daniel Engovatov <dengovatov@crosslogix.com>]

That's what we need function declaration syntax for..

The problem is - you may have a correct input type, but still get an error,
that has to be communicated in a generic way.  For example
account_balance(subject::account_id) may return INdeterminate for an invalid
account Id or for a failed query.  There is no easy way to validate that all
account_id used are valid before the evaluation - you would not want to
embed any cutom validation logic into your engine, would not you?


-----Original Message-----
From: Anne Anderson [mailto:Anne.Anderson@Sun.com]
Sent: Wednesday, December 04, 2002 10:51 AM
To: 'XACML TC '
Subject: Re: [xacml] IIC012: syntax-error or processing-error?


Polar,

How do you handle the type-correctness checking in the case of
custom functions?  Do all custom functions have to be hardwired
into your XACML evaluation engine?  If not, and you have a
pluggable interface, is there some method to query for the types
of the arguments that a given function expects?  Or what?

Anne
-- 
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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