Batch inserts with JPA/EJB3

Question

Does JPA/EJB3 framework provide standard way to do batch insert operation...? We use hibernate for persistence framework, So I can fall back to Hibernate Session and use com

Answer 1

With medium records number you can use this way:

em.getTransaction().begin();
for (int i = 1; i <= 100000; i++) {
     Point point = new Point(i, i);
     em.persist(point);
     if ((i % 10000) == 0) {
          em.flush();
          em.clear();
     }
}
em.getTransaction().commit();

But with large records number you should perform this task in multiple transactions:

em.getTransaction().begin();
for (int i = 1; i <= 1000000; i++) {
      Point point = new Point(i, i);
      em.persist(point);
      if ((i % 10000) == 0) {
          em.getTransaction().commit();
          em.clear();          
          em.getTransaction().begin();
      }
}
em.getTransaction().commit();

Ref: JPA Batch Store