[Bug 4198] Policy assertion semantics independent of attachment mechanism

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

           Summary: Policy assertion semantics independent of attachment
                    mechanism
           Product: WS-Policy
           Version: LC
          Platform: Macintosh
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Guidelines
        AssignedTo: fsasaki@w3.org
        ReportedBy: fabian.ritzmann@sun.com
         QAContact: public-ws-policy-qa@w3.org
                CC: monica.martin@sun.com


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. Independent of the employed attachment mechanism, constraints may be
defined to which policy subject an assertion may be attached [Web Services
Policy Framework, section 3.4]. The semantics of a policy assertion may not
depend on the mechanism by which a policy is attached to a policy subject. This
allows policy tools to choose the most appropriate mechanism to attach a policy
without having to analyze the contents of the policy.

Received on Friday, 12 January 2007 10:05:06 UTC