Do we have query plan adapter for java?

None that I am aware of at the moment.

ok

We (the Cerbos team) don't have anything in the works at the moment. There are lots of different ways to work with databases and data stores in Java and other languages so we can't possibly support them all. The query plan API is fairly small so we encourage users to write their own using their preferred technology.

You can see the examples here: https://github.com/cerbos/query-plan-adapters

thanks