- From: Renato Iannella <ri@semanticidentity.com>
- Date: Fri, 6 Jun 2014 11:42:50 +1000
- To: "ODRL Community Group (Contrib)" <public-odrl-contrib@w3.org>
[This opens a massive can of worms...8-] Looking back, we discussed this issue when the V2 Model was being created (back in Feb 2005 [1], and the original requirement [2]) But, it looks like we did not answer/resolve the question. (eg should Perms/Prohib be mutually exclusive). I think we opted to be silent, as whatever we would have decided, some community may have wanted to interpret their polices differently. (the perils of being a high-level framework) I can certainly see some scenarios where Perms/Prohibs work well together.... For example; Permission = Sell Prohibition = Sell + Constraint = (Spatial = Australia) So, when asked can I sell asset X, the answer is "yes, but not in Australia" Now, you can also model that as: Permission = Sell + Constraint = (Spatial = (Australia + Angola + Antartica + Brazil + Canada + Denmark + England + ........)) But the former is cleaner and less likely to be mis-interpreted. Cheers... Renato Iannella Semantic Identity http://semanticidentity.com Mobile: +61 4 1313 2206 [1] http://www.w3.org/2012/09/odrl/archive/odrl.net/2.0/odrl-version2004-2007/2005-February/000038.html [2] http://www.w3.org/2012/09/odrl/archive/odrl.net/2.0/issues/issueslist-1_7.html
Received on Friday, 6 June 2014 01:43:18 UTC