EmployeeService.java 文件源码

/**
 * Removes the provided employee from the database.
 *
 * This operation cannot be undone, so be sure this is what you want to do.
 *
 * @param employee The employee to delete.
 */
public void deleteEmployee(Employee e){
    try {
        entityManager.getTransaction().begin();
        entityManager.remove(entityManager.merge(e));
        entityManager.getTransaction().commit();
    } catch (PersistenceException ex) {
        entityManager.getTransaction().rollback();
        throw ex;
    }
}