public void edit(Room room)
throws NonexistentEntityException, RollbackFailureException, Exception {
EntityManager em = null;
try {
em = getEntityManager();
em.getTransaction().begin();
Room persistentRoom = em.find(Room.class, room.getId());
Department departmentOld = persistentRoom.getDepartment();
Department departmentNew = room.getDepartment();
Category categoryOld = persistentRoom.getCategory();
Category categoryNew = room.getCategory();
if (departmentNew != null) {
departmentNew = em.getReference(departmentNew.getClass(), departmentNew.getId());
room.setDepartment(departmentNew);
}
if (categoryNew != null) {
categoryNew = em.getReference(categoryNew.getClass(), categoryNew.getId());
room.setCategory(categoryNew);
}
room = em.merge(room);
if (departmentOld != null && !departmentOld.equals(departmentNew)) {
departmentOld.getRoomCollection().remove(room);
departmentOld = em.merge(departmentOld);
}
if (departmentNew != null && !departmentNew.equals(departmentOld)) {
departmentNew.getRoomCollection().add(room);
departmentNew = em.merge(departmentNew);
}
if (categoryOld != null && !categoryOld.equals(categoryNew)) {
categoryOld.getRoomCollection().remove(room);
categoryOld = em.merge(categoryOld);
}
if (categoryNew != null && !categoryNew.equals(categoryOld)) {
categoryNew.getRoomCollection().add(room);
categoryNew = em.merge(categoryNew);
}
em.getTransaction().commit();
} catch (Exception ex) {
try {
em.getTransaction().rollback();
} catch (Exception re) {
throw new RollbackFailureException(
"An error occurred attempting to roll back the transaction.", re);
}
String msg = ex.getLocalizedMessage();
if (msg == null || msg.length() == 0) {
Integer id = room.getId();
if (findRoom(id) == null) {
throw new NonexistentEntityException("The room with id " + id + " no longer exists.");
}
}
throw ex;
} finally {
if (em != null) {
em.close();
}
}
}
public void create(Room room) throws RollbackFailureException, Exception {
EntityManager em = null;
try {
em = getEntityManager();
em.getTransaction().begin();
Department department = room.getDepartment();
if (department != null) {
department = em.getReference(department.getClass(), department.getId());
room.setDepartment(department);
}
Category category = room.getCategory();
if (category != null) {
category = em.getReference(category.getClass(), category.getId());
room.setCategory(category);
}
em.persist(room);
if (department != null) {
department.getRoomCollection().add(room);
department = em.merge(department);
}
if (category != null) {
category.getRoomCollection().add(room);
category = em.merge(category);
}
em.getTransaction().commit();
} catch (Exception ex) {
try {
em.getTransaction().rollback();
} catch (Exception re) {
throw new RollbackFailureException(
"An error occurred attempting to roll back the transaction.", re);
}
throw ex;
} finally {
if (em != null) {
em.close();
}
}
}