Feat/generic request context

[woutslabbinck]

Generalise the request input for the ODRL Evaluator through extending the constraint input under sotw:Context for odrl:purpose to work with all odrl:LeftOperand instantiations.

From now on, the ODRL Evaluator can evaluate input such as:

Request

@prefix ex: <http://example.org/> .
@prefix odrl: <http://www.w3.org/ns/odrl/2/> .
@prefix sotw: <https://w3id.org/force/sotw#> .

<urn:uuid:ce9fc20e-7c79-474e-8afe-7605accccee8> a odrl:Request ;
  odrl:uid <urn:uuid:ce9fc20e-7c79-474e-8afe-7605accccee8> ;
  odrl:permission <urn:uuid:ce9fc20> .

<urn:uuid:ce9fc20> a odrl:Permission ;
  odrl:assignee ex:alice ;
  odrl:action odrl:read ;
  odrl:target ex:x ;
  sotw:context <urn:uuid:79794c05-a9e8-4ec7-afe1-54ac3b16de41> .

<urn:uuid:79794c05-a9e8-4ec7-afe1-54ac3b16de41> a odrl:Constraint ;
  odrl:leftOperand odrl:deliveryChannel ;
  odrl:operator odrl:eq ;
  odrl:rightOperand <https://podpro.dev/id> .

Policy

@prefix ex: <http://example.org/> .
@prefix odrl: <http://www.w3.org/ns/odrl/2/> .

<urn:uuid:5ee1a7dd-ccba-49a4-92e8-6cc375509efd> a odrl:Agreement ;
  odrl:uid <urn:uuid:5ee1a7dd-ccba-49a4-92e8-6cc375509efd> ;
  odrl:permission <urn:uuid:e51a43e4-616f-4f32-906b-2359955228e5> .

<urn:uuid:e51a43e4-616f-4f32-906b-2359955228e5> a odrl:Permission ;
  odrl:assignee ex:alice ;
  odrl:action odrl:read ;
  odrl:target ex:x ;
  odrl:constraint <urn:uuid:963698fe-3b44-4b88-8527-501b6c5765a6> .

<urn:uuid:963698fe-3b44-4b88-8527-501b6c5765a6> a odrl:Constraint ;
  odrl:leftOperand odrl:deliveryChannel ;
  odrl:operator odrl:eq ;
  odrl:rightOperand <https://podpro.dev/id> .