I am interested to use the acl add-on for Postgres (see text.
This code uses a custom type, named ace, for efficient storage.
For each table, a column ace[] is defined.

Is it possible to extend hypersistence-utils: with a type for ace[] and are there some directions how to do so?

Thanks,
— Jaap

I’ve looked into the source code of hypersistence-utils, and AbstractArrayType seems to be the starting point.