Question

Is the below statement a valid one?

persist() also guarantees that it will not execute an INSERT statement if it is called outside of transaction boundaries

When I try the below code using persist; then the row is getting inserted without any transaction (It is commented out).

SessionFactory sessionFactory = new Configuration().configure("student.cfg.xml").buildSessionFactory();
    Session session = sessionFactory.openSession();

    //Transaction tran = session.beginTransaction();

    /*
     * Persist is working without transaction boundaries ===> why?
     */

    Student student = new Student();
    student.setFirstName("xxx");
    student.setLastName("yyy");
    student.setCity("zzz");
    student.setState("ppp");
    student.setCountry("@@@");
    student.setId("123456");
            session.persist(student);
            //tran.commit();
            session.flush();
    session.close();

Answer 1

persist() also guarantees that it will not execute an INSERT statement if it is called outside of transaction boundaries

This statement is correct. When control returns from persist() back to your code, no INSERT statements have been executed. These statements are guaranteed to be deferred until session flushing. Note that persist() would be a pointless method if no insert happened ever.