[Odrl-version2] Duty?

[Myles, Stuart]

Let's say I want to grant permission to someone that they can use my
image online, as long as they attribute it to me.  I'm not certain how
to convey that duty within ODRL.  It looks like [1] I can attach a duty
to an action and that the duty may consist of a constraint.  So, would
that mean something like this:

    <o:permission>
        <o:action resource="display">
            <o:duty>
                <o:constraint name="attribution" operator="eq"
rightOperand="Stuart Myles" />
            </o:duty>
        </o:action>
    </o:permission>

Although, if that's the case, then why do I need to "wrap" the
constraint in the duty?  What is special about the duty constraint that
isn't true of other constraints (e.g. only use the asset in the UK)?  In
which case, can't I say this:

    <o:permission>
        <o:action resource="display">
            <o:constraint name="spatial" operator="eq"
rightOperand="uk"/>
            <o:constraint name="attribution" operator="eq"
rightOperand="Stuart Myles"/>
        </o:action>
    </o:permission>

Maybe other duties are more complex and thus need to be grouped somehow?

Thanks in advance for any help.

Regards,

Stuart

[1] http://odrl.net/2.0/WD-ODRL-Model-20080416.html



The information contained in this communication is intended for the use
of the designated recipients named above. If the reader of this 
communication is not the intended recipient, you are hereby notified
that you have received this communication in error, and that any review,
dissemination, distribution or copying of this communication is strictly
prohibited. If you have received this communication in error, please 
notify The Associated Press immediately by telephone at +1-212-621-1898 
and delete this e-mail. Thank you.
[IP_US_DISC]
msk dccc60c6d2c3a6438f0cf467d9a4938
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://odrl.net/pipermail/odrl-version2_odrl.net/attachments/20100322/ae041a73/attachment.html>