[Odrl-version2] Model change?

[Francis Cave]

Renato

 

Ah, I see what you are saying. I am misinterpreting the meaning of the
constraint in the second permission. In my example Party A is permitted to
distribute online in both cases. The first permission says he can. The
second says he can, with the constraint that it is online. 

 

So, you're right, the second permission should be a prohibition. It is the
prohibition that is constrained to apply only to Party A and only to
distribution online.

 

Thanks for the help!

 

Francis

 

 

 

 

From: odrl-version2-bounces at odrl.net [mailto:odrl-version2-bounces at odrl.net]
On Behalf Of ri at odrl.net
Sent: 19 November 2010 12:10
To: ODRL-Version2
Subject: Re: [Odrl-version2] Model change?

 

 

On 19 Nov 2010, at 20:42, Francis Cave wrote:





No, both are permissions. The first says any assignee is permitted to
distribute the asset. The second says that Party A is permitted to
distribute the asset, but with the constraint that Party A may not
distribute the asset online. Can you suggest a better way of expressing
this?

 

If I was PartyA, then I would ask myself "can I distribute the asset
online"?

The first Permission says I can.

The second Permission says I cannot.

Since all the Permissions are "valid" (and there are no more statements to
check) - then I choose the first one and go ahead and distribute online...

 

So...another way to express this is with the same first Permission, and a
new Prohibition:

 

<o:prohibition>

        <o:asset uid="myAssetURI"/>

        <o:action name="o:distribute"/>

        <o:constraint name="o:media" operator="o:eq"
rightOperand="a:online"/>

        <o:role uid="a:party_A" function="o:assignee"/>

</o:prohibition>

 

Now, I ask myself "can I distribute the asset online"?

The Permission says I can.

The Prohibition says I cannot.

The conflict attribute is set to "prohibit" - so that wins out!

 

Cheers

 

Renato Iannella

ODRL Initiative

http://odrl.net

 

 

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