Hibernate - Avoiding LazyInitializationException - Detach Object From Proxy and Session

Question

MyObject myObject = repositoryHibernateImpl.getMyObjectFromDatabase();
//transaction is finished, and no, there is not an option to reopen it
ThirdPartyUtility.doStu         


        

Answer 1

check my solution.

Minimal example:

I do not load the property from the object but from the controller.
Code:

{..}

MyProp prop = employeeController.getMyProp(employee);

{..}

This initiaqlizes the property via repository object and returns it.
EmployeeController.java:

public Set getMyProp(Employee employee) {

    if (this.employeeRepository.InitMyProp(employee)){

        return employee.getMyProp();
    }

    return null;
}

Repository get/open the session, reload employee object ! and initialize lazy loaded field
EmployeeRepository.java:

public boolean InitMyProp(Employee employee) {

    if (Hibernate.isInitialized(employee.getMyProp())){
        return true;
    }

    try {
        Session session = getSession();

        session.refresh(employee);

        Hibernate.initialize(employee.getMyProp());

    } catch (Exception ex) {
        return false;
    }

    return true;
}

private Session getSession(){

    if (session == null || !session.isConnected() || !session.isOpen()){
        session = HibernateUtil.getSessionFactory().getCurrentSession();
    }
    if (!session.getTransaction().isActive()) {
        session.beginTransaction();
    }
    return session;
}

I have in my solution a TableView with several thousand records and 2 further TableViews with details on the selected record in the first TableView.
hope it helps.