/*
* gets the prevailing policy in a module (e.g. a query, relation, view)
*/
private PolicyType getPrevailingPolicy(
EvolutionEvent<V> event, V nr, PolicyType previousPolicyType) {
EvolutionPolicies policies = nr.getPolicies();
// if policy for this event exist override previousPolicy coming from provider node
for (EvolutionPolicy<V> nrPolicy : policies) {
if ((nrPolicy.getSourceEvent().getEventNode().equals(event.getEventNode()))
&& (nrPolicy.getSourceEvent().getEventType() == event.getEventType())) {
return nrPolicy.getPolicyType();
}
}
// If no policy is returned check parents' policy for this event to override provider's policy
if (this.getParentNode(nr) != null) {
EvolutionEvent<V> newEvent = new EvolutionEvent<V>(/*nr,*/ event.getEventType());
return getPrevailingPolicy(newEvent, this.getParentNode(nr), previousPolicyType);
}
// if no self or parents policy exists then return provider's policy
return previousPolicyType;
}
