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Subject: [NEW ISSUE] Change the normative meaning of Assertion POL40006
- From: Mike Edwards <mike_edwards@uk.ibm.com>
- To: "OASIS Policy" <sca-policy@lists.oasis-open.org>
- Date: Thu, 5 Feb 2009 14:15:03 +0000
Target: SCA Policy Spec sca-policy-1[1].1-spec-CD01-Rev13a.doc
Raiser: Mike Edwards
Description:
[POL40006] currently reads:
"If
the policySet on a <componentType/> has a @provides list that includes
an intent
that is listed in the @provides list of
a policySet on the <component/>, the
componentType policySet MUST be ignored."
The problem with this is that it is
hard for a deployer to be sure what policies actually apply
to a component or to one of its subelements.
The deployer has to know what policySets are
in the componentType and then either
agree that they are OK, or ensure that each one of them
is overridden. This is hard to
do for a Domain with a large collection of components.
It is far simpler to have a rule that
says that ANY policySets applied to the component (either by
direct attachment or by external attachment)
override ALL policySets on the componentType.
Then a deployer just has to assure that
each component or component subelement has some
policySet attached (eg by external attachment
rules) and they are done.
Proposal:
Change [POL40006] to read as follows:
"If
a component has any policySets attached to it (by any means), then any
policySets attached
to the componentType MUST be ignored"
Yours, Mike.
Strategist - Emerging Technologies, SCA & SDO.
Co Chair OASIS SCA Assembly TC.
IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.
Phone & FAX: +44-1962-818014 Mobile: +44-7802-467431
Email: mike_edwards@uk.ibm.com
Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number
741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6
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