[xacml] 134c: Datatypes for predefined attribute-ids,141 - data type uri's.

Attached is appendix B with datatypes for 
predefined identifiers.(See note below)

 

[0141]. data type uri's.

Is DataType attribute QName or URI? I've been 
advocating URI up to now (even on today's schema call)

but I've changed my mind to QName. QName evaluates 
into expanded name which is a pair: (URI, local_name).

Expanded name MUST be used in all operations 
involving DataType attribute of the xacml:AttributeDesignator,

xacml:AttributeSelector, xacml:AttributeValue, and 
xacml-context:Attribute.

 

Eg: <Attribute AttributeId="..." 
DataType="xsi:string"/>

Expanded name: http://www.w3c.org/2001/XMLSchema, 
string

 

If expanded name is used, we do not have to specify 
how to form URI out of this pair.

 

For those who care: I was advocationg URI 
for the DataType because I thought that expanded qname

must be somehow concatenated into one value. URI is 
already one value. But many times we have to

invent this URI by using the same concatenation. If 
we compare expanded names as pairs we do not have

this problem.

 

Simon

 

Attachment:
XACML identifiers.doc

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