Hi,

I would like to use logic programing to describe permissions. The
definition is

We have set of triples which looks like:
Set of roles; set of operations; set of states

Triples are defined in scope of some entity with states, wildcard is
defined with _

All I need is to answer on some operation invocation if given user
with his role is able to execute that operation for particular entity
which is in one of its states

Example:
Roles: admin, operator, auditor
Entity: data form with states dirty, applied, rejected, executed
Operations on data form: reject, acept, list, enter
Triples of permissions:
admin, operator; reject, accept; applied
auditor, operator; list; _
operator; enter; dirty

The additional question beside checking permission is:
What are operations avaiable for given role and given state of entity


Any thoughts? Maybe core.logic? It seems that I know its purpose but
don't know how to use it.
Thanks in advance.

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