java - EntityManager refresh -

i have web application using jpa. entity manager keeps bunch of entites , update database other side. use mysql , use phpmyadmin , change row.

how tell entity manager re-synchronize, e.g. forgot entites in cache?

i know there refresh(object) method, there possibility how refreshall() or results in this?

it sure expensive operation if has done.

entitymanager.getentitymanagerfactory().getcache().evictall() 

refresh different since modifies object. line empty cache, if fetch objects changed outside entity manager, actual database query instead of using outdated cached value.