JpaContainer fetches way too much columns


We are using the JpaContainer to display a subset of properties of a complex Entity (using a table).
The problem is that JpaContainer fetches
properties even if not displayed. This makes the application very slow, because this entity contains a few Joins (OneToOne and ManyToOne) which we did not display. Even the FetchType.LAZY ones are fetched.

(Hibernate generates 5 seperate huge queries for each row to display)

Is there a possibility to make JPAContainer to only fetch the few properties that are actually displayed?