RE: NEW Issue 4195: How to ignore some "ignorable" assertions only?

I've been thinking a little more about this and want to make sure that I described it clearly ... Let's consider the same example. Let's say the requestor supports assertions A & B and is willing to ignore assertions C & D. The requestor can represent this as:

<Policy>
 <A/>
 <B/>
 <C wsp:Optional="true"/>
 <D wsp:Optional="true"/>
</Policy>

The above policy expression has four policy alternatives:

A11 = {A, B}
A12 = {A, B, C}
A13 = {A, B, D}
A14 = {A, B, C, D}

Let's say provider P's policy alternative is,

A2 = {A, B, C-ignorable, D-ignorable}

provider Q's policy alternative is,

A3 = {A, B, C-ignorable, D-ignorable, X-ignorable}

Provider S's policy alternative is,

A4 = {A, B}

Using the strict mode policy intersection,

a) A14 & A2 are compatible
b) Requestor and provider Q's policies are incompatible
c) A11 & A4 are compatible.

That is, the requestor can ignore a subset of the ignorable assertions. I hope this helps.

Regards,
 
Asir S Vedamuthu
Microsoft Corporation


-----Original Message-----
From: public-ws-policy-request@w3.org [mailto:public-ws-policy-request@w3.org] On Behalf Of Asir Vedamuthu
Sent: Saturday, January 13, 2007 10:07 PM
To: Prasad Yendluri; public-ws-policy@w3.org
Subject: RE: NEW Issue: How to ignore some "ignorable" assertions only?


>does not allow for ignoring only  a subset 
>of the assertions marked "Ignorable" 

In your case, the requestor is aware of a set of assertions that it is willing to ignore. For instance, let's say the requestor's policy alternative contains assertions A & B and the set of assertions that the requestor is willing to ignore contains C & D. That is,

A1 = {A, B, C, D}.

Let's say provider P's policy is,

A2 = {A, B, C-ignorable, D-ignorable}

and provider Q's policy is,

A3 = {A, B, C-ignorable, D-ignorable, X-ignorable}

Using the strict mode policy intersection, A1 & A2 are compatible and A1 & A3 are incompatible. That is, the requestor can ignore a subset of the ignorable assertions. I hope this helps.

Regards,
 
Asir S Vedamuthu
Microsoft Corporation








From: public-ws-policy-request@w3.org [mailto:public-ws-policy-request@w3.org] On Behalf Of Prasad Yendluri
Sent: Wednesday, January 10, 2007 11:59 AM
To: public-ws-policy@w3.org
Subject: NEW Issue: How to ignore some "ignorable" assertions only?

Title: How to ignore some of the assertions marked "Ignorable" only?

Description: 
The current Intersection Algorithm's use of "Strict" and "Lax" modes does not allow for ignoring only  a subset of the assertions marked "Ignorable". In many use cases it is conceivable that the consumer would want to ignore only some of the assertions. 

How to derive the intersection / effective compatible subset that the consumer wants to use with only a subset of the assertions marked ignorable?

Justification:
Articulated in the description section but, I think it is desirable to enable this.
. 
Target: WS-Policy 1.5 - Framework


Regards,
Prasad

Received on Tuesday, 16 January 2007 07:52:46 UTC