javahibernatejpajpqlejb-3.0

How can I avoid the Warning "firstResult/maxResults specified with collection fetch; applying in memory!" when using Hibernate?

I'm getting a warning in the Server log "firstResult/maxResults specified with collection fetch; applying in memory!". However everything working fine. But I don't want this warning.

My code is

public employee find(int id) {
    return (employee) getEntityManager().createQuery(QUERY).setParameter("id", id).getSingleResult();
}

My query is

QUERY = "from employee as emp left join fetch emp.salary left join fetch emp.department where emp.id = :id"
Solution

  • Reason for this warning is that when fetch join is used, order in result sets is defined only by ID of selected entity (and not by join fetched).

    If this sorting in memory is causing problems, do not use firsResult/maxResults with JOIN FETCH.