OASIS eXtensible Access Control Markup Language (XACML) TC

Re: [xacml] [Text Change] Clarify A.3 Structured types does not castor convert values

  • 1.  Re: [xacml] [Text Change] Clarify A.3 Structured types does not castor convert values

    Posted 11-01-2002 13:32
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    Subject: Re: [xacml] [Text Change] Clarify A.3 Structured types does not castor convert values


    On Fri, 1 Nov 2002, Anne Anderson wrote:
    
    > CHANGE REQUEST:
    > In Section A.3 Structured types, item 1., paragraph starting with
    > "1, change second sentence from:
    >
    >   "This requires the structured data, including its tags and
    >    attributes, to be identified and treated as an instance of the
    >    data-type xsi:string."
    >
    > To:
    >
    >   "This requires the structured data <AttributeValue> to be given the
    >    DataType="xsi:string".  For example, a structured data type
    >    that is actually a ds:KeyInfo/KeyName would appear in the
    >    Context as:
    >
    >    <AttributeValue
    >      DataType="xsi:string"><ds:KeyName>jhibbert-key</ds:KeyName></AttributeValue>
    
    Isn't the datatype now:
    
    	DataType="http://www.w3.org/2001/XMLSchema-instance#string";
    ?
    
    Now, if you do not regard the data as a string, and you actually give
    it a data type, i.e. extension to standard XACML, I wonder what happens
    for the following problem.
    
    Does the data within the attribute value have to be completely contained?
    
    For example, if you have <ds:KeyName>jhibberi-key</ds:KeyName> where is
    the "ds:" name space defined? (In the begining of the context? of which it
    cannot be guarranteed to be there) Or in the attribute value?
    
    -Polar
    
    
    
    
    > RATIONALE: Way#1 could be read as implying that the structured
    > data type is automatically cast or converted to the type required
    > by the function that references it.  We should be very clear that
    > this does NOT occur.
    >
    > 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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