[Bug 4198] Policy assertion semantics independent of attachment mechanism

http://www.w3.org/Bugs/Public/show_bug.cgi?id=4198





------- Comment #1 from fabian.ritzmann@sun.com  2007-01-16 17:59 -------
We modified the proposal and rephrased the sentence on constraining attachment
to policy subjects. We hope this makes the text easier to understand.


Title

Policy assertion semantics independent of attachment mechanism

Description

A policy can be attached to a policy subject as external attachment, directly
included, or referenced by the policy subject. The assertions contained in the
attached policy maintain their semantics independent of the chosen attachment
mechanism. The guidelines should make that explicit.

Justification

Assertion authors are constrained from designing assertions that change their
semantics based on the attachment mechanism. Policy tools must have the liberty
to choose the most appropriate or feasible attachment mechanism at any time
without having to analyze the contents of the attached policy.

Target

Guidelines for Policy Assertion Authors

Proposal

Include in the Guidelines section 4.1:

WS-PolicyAttachment provides various mechanisms to attach a policy to a policy
subject. Although a policy assertion may be tailored for a specific set of
policy subjects by design, its semantics do not depend on the mechanism by
which a policy is attached to a policy subject. Independence from a specific
attachment mechanism allows policy tools to choose the most appropriate
mechanism to attach a policy without having to analyze the contents of the
policy.

Received on Tuesday, 16 January 2007 17:59:25 UTC