abac / ngac (next generation access control) - Policy Machine reference implementation with neo4j

[koen]

Hi, looking through some ABAC (attribute based access control) standards/documentation i came across NGAC (Next Generation Access Control) and NIST has defined a reference implementation for the NGAC Policy Machine which is based on neo4j (and they also have a mysql version). I wonder if anyone has experience with the neo4j version of this policy machine for  implementing abac - as opposite to xacml based abac implementations?

Ref: https://github.com/PM-Master/Policy-Machine

Thanks Koen