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Subject: RE: [xacml] XACML Profile for Hierarchical Resources, WD 8
Couple comments
1.
For the non XML hierarchy, we either need to add to the definition of
the resource-ancestor, that it does include the resource-id of the
resource itself. It is important for the use case of policies
applicable to a resource itself and all its children: so you do not need
to write two rules.
OR (probably preferably, as it fits along with XQuery/XPath axes
definitions): add definition for
urn:oasis:names:tc:xacml:2.0:resource:resource-ancestor-or-self
"For each ancestor of the node specified in the "resource-id" attribute
or attributes, and for each normative representation of that ancestor
node, an <Attribute> element with AttributeId
"urn:oasis::names:tc:xacml:2.0:resource:resource-ancestor-or-self".
The <AttributeValue> of this <Attribute> SHALL be the result of applying
urn:oasis:names:tc:xacml:1.0:function:type-union function to the
contents of
"resource-id" and "resource-ancestor" attributes, where the "type" is
selected according to the used datatype of those attributes."
2.
We need to mention in the definition of "resource-ancestor", that it can
not be guaranteed to be computed by recursively combining
"resource-parent" values. Parent of a parent is not necessarily defined
as an ancestor in our case (this is to avoid circular reference and
other problems). That may seem odd, but we should not impose
unnecessary requirements on the structure.
Daniel;
-----Original Message-----
From: Anne Anderson [mailto:Anne.Anderson@Sun.COM]
Sent: Tuesday, September 14, 2004 10:29 AM
To: XACML TC
Subject: [xacml] XACML Profile for Hierarchical Resources, WD 8
Colleagues,
I have entered a new draft of the Profile for Hierarchical
Resources into the repository. The link on our TC web page now
points to it.
The changes since the previous draft are:
In response to Michiharu's comment in
http://lists.oasis-open.org/archives/xacml/200409/msg00002.html
- Add clarifying paragraph to the introduction explaining that a
hierarchical resource may be "represented" as an XML document
even if it physically is not an XML document; likewise, an XML
document resource may be "represented" as a non-XML hierarchy.
- Change all instances of "XML document resource" to "a resource
represented as an XML document" (the exact wording varies
depending on the context)
I also re-inserted the definition of xpath-expression DataType,
since it is no longer in the XACML core spec.
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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