[Odrl-version2] Re: The difference between offer and ticket

[Alapan Arnab]

Hi,
I think this is a good example on why there is a need to have another
attribute to indicate the type of offer - which should remove the
ambiguities.

Alapan
On Thu, 2006-03-02 at 10:09 +0800, fengwenjie wrote:
> Hi Renato,
> 
> That is to say, Offer only represent the holder's ability, while Ticket means 
> the holder has issued the rights. 
> Then I have still another question: why the two has different contraint on 
> the number of Party with Assigner role? Actually, in one negotiation, shouldn't 
> the Assigner of Offer and Ticket be the same?
> 
> BR,
> Jessica
> 
> ----- Original Message ----- 
> 
> > > from above, the only textual difference is that: ticket allows at  
> > > least one party with Assigner role, while offer only allows exactly  
> > > one! Then, what's the original intention to have these 2 kinds of  
> > > rights types?  or to say, what's the semantic difference between them?
> > 
> > Hi Jessica - the primary difference between Offer and Ticket is that  
> > the Offer is only *proposing* as set of
> > permissions (and constraints etc), whereas a Ticket *allows* a set of  
> > permissions (and constraints etc). The latter being for the actual  
> > holder of the ticket.
> > 
> > Is that clear? Perhaps we need to update the model...
> > 
> > Cheers
> > 
> > Renato Iannella
> > ODRL Initiative
> > http://odrl.net
> > 
> > 
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-- 
Alapan Arnab
Data Networks Architecture (DNA) Laboratory
Department of Computer Science
University of Cape Town
Rondebosch, 7700
South Africa

Tel: +27 21 650 3127
Web: http://people.cs.uct.ac.za/~aarnab/
Blog: http://idiots-mind.blogspot.com
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