public static void main(String[] args) throws Exception {
HashMap map = new HashMap();
// map.put("hibernate.show_sql", "true");
EntityManagerFactory factory = Persistence.createEntityManagerFactory("titan", map);
EntityManager entityManager = factory.createEntityManager();
entityManager.getTransaction().begin();
try {
System.out.println("Initialize DB");
InitializeDB.initialize(entityManager);
System.out.println();
System.out.println();
System.out.println("Find Bill Burke by named parameter");
Customer cust = findCustomerByNamedParameter(entityManager, "Bill", "Burke");
System.out.println("Bill Burke's cust id: " + cust.getId());
System.out.println();
System.out.println();
System.out.println("Find Gavin King by indexed parameter");
cust = findCustomerByIndexedParameter(entityManager, "Gavin", "King");
System.out.println("Gavin King's cust id: " + cust.getId());
System.out.println();
System.out.println();
System.out.println("Output all customers via paging");
List results;
int first = 0;
int max = 2;
do {
results = getCustomers(entityManager, max, first);
Iterator it = results.iterator();
while (it.hasNext()) {
Customer c = (Customer) it.next();
System.out.println(c.getFirstName() + " " + c.getLastName());
}
entityManager.clear();
first = first + results.size();
} while (results.size() > 0);
} finally {
entityManager.getTransaction().commit();
entityManager.close();
factory.close();
}
}
public static Customer createCustomerAddress(EntityManagerFactory factory) {
System.out.println("Create 1st Customer");
Customer cust = new Customer();
cust.setFirstName("Bill");
cust.setLastName("Burke");
Address address = new Address();
address.setStreet("Beacon Street");
address.setCity("Boston");
address.setState("MA");
address.setZip("02115");
cust.setAddress(address);
EntityManager manager = factory.createEntityManager();
try {
manager.getTransaction().begin();
manager.persist(cust);
manager.getTransaction().commit();
} finally {
manager.close();
}
System.out.println("Address was also persisted with auto-generated key: " + address.getId());
System.out.println("Return detached Customer instance: " + cust.getId());
return cust;
}
public static Customer createCreditCard(EntityManagerFactory factory, Customer cust) {
CreditCard card = new CreditCard();
card.setExpirationDate(new java.util.Date());
card.setNumber("4444-4444-4444-4444");
card.setNameOnCard("William Burke");
card.setCreditOrganization("Capital One");
card.setCustomer(cust);
EntityManager manager = factory.createEntityManager();
try {
manager.getTransaction().begin();
manager.persist(card);
manager.getTransaction().commit();
// Show that card.getCustomer() returns null
manager.clear();
CreditCard cardCopy = manager.find(CreditCard.class, card.getId());
System.out.println("should be null: " + cardCopy.getCustomer());
manager.getTransaction().begin();
System.out.println("now set the owning side of the relationship");
Customer custCopy = manager.find(Customer.class, cust.getId());
custCopy.setCreditCard(cardCopy);
manager.getTransaction().commit();
manager.clear();
cardCopy = manager.find(CreditCard.class, card.getId());
System.out.println("should be set now: " + cardCopy.getCustomer().getFirstName());
} finally {
manager.close();
}
return cust;
}
