NEW ISSUE: Need more precision on when policies in a policySet are ineffect

[David Booz <booz@us.ibm.com>]

TARGET: SCA Policy Framework

DESCRIPTION:

It is not clear whether policies in a policySet that are not referenced by the list of required intents are always applicable.

What exactly is the effect of having a list of required intents? Are the intentMaps in the policySet that are not referenced by the list of required intents ignored? Or is the semantic that all parts of the attached policySet always apply, and the list of required intents is used only for overriding the defaults in the contained intentMaps?

How to handle standalone policies should also be addressed while addressing this issue.
In particular, consider the following two cases and the questions they raise:
A> There are no required intents declared, and an attached policySet contains some standalone policies and some intentMaps
Questions:
- Do standalone policies in the policySet apply?
- Should all the intentMaps contained in the policySet be considered? Should the policies for the default qualifier in each considered intentMap be applied?

B> There are required intents declared, and an attached policySet includes intentMaps for some of the required intents, intentMaps for some other intents, and also some standalone policies.
- Do standalone policies in the policySet apply?
- Should intentMaps pertaining to intents that are not listed as required be considered? For each such intentMap, should the policies for the default qualifier be applied?


PROPOSAL: none

PROVENANCE: SCA-226


Dave Booz
STSM, SCA and WebSphere Architecture
Co-Chair OASIS SCA-Policy TC
"Distributed objects first, then world hunger"
Poughkeepsie, NY (845)-435-6093 or 8-295-6093
e-mail:booz@us.ibm.com
http://washome.austin.ibm.com/xwiki/bin/view/SCA2Team/WebHome