Re: Extended Relations + Constraints On Constraints proposal

> On 23 Jan 2017, at 20:02, Michael Steidl (IPTC) <mdirector@iptc.org> wrote:
> 
> * re the example: sorry but by existing constraint left operand I can’t see how to solve the classic example:
> Permission: action = Display
> Constraint 1: leftOperand = Action Datetime (or Period), rightOperand = the timestamp of the end of the event (could be a URL delivering it in real-time), operator = greater than or equal
> Constraint 2: leftOperand = Action Datetime (or Period), rightOperand = ?? how to express “30 minutes later that a specific timestamp”, operator = greater than or equal, (new) priorConstraint = c1


If we express the relation between c1 and c2 such that it means: “C1 has to be satisfied, then you can process C2 so that is satisfied”.

Renato Iannella, Monegraph
Co-Chair, W3C Permissions & Obligations Expression (POE) Working Group