Nhibernate事务的使用：
public void Add(Customer customer)
{
ISession session = _sessionManager.GetSession();
ITransaction transaction = session.BeginTransaction(); try
{
session.Save(customer);
session.Flush();//清除一级缓存 transaction.Commit();
}
catch (Exception)
{
transaction.Rollback();
}
finally
{
session.Close();
}
}
测试：
[TestMethod]
[ExpectedException(typeof(NHibernate.Exceptions.GenericADOException))]
public void TestAddTransation()
{
CustomerService customerService = new CustomerService();
OrderService orderService = new OrderService(); Customer customer1 = new Customer()
{
FirstName = "Test",
LastName = "TestAddTransation1",
Age =
};
Order order1 = new Order()
{
OrderDate = DateTime.Now.AddMinutes(),
Customer = customer1
};
Order order2 = new Order()
{
OrderDate = DateTime.Now.AddMinutes(),
Customer = customer1
}; Customer customer2= new Customer()
{
FirstName = null, //数据库要求不能为null，现在故意引发添加异常
LastName = "TestAddTransation",
Age =
};
Order order3 = new Order()
{
OrderDate = DateTime.Now.AddMinutes(),
Customer = customer2
};
Order order4 = new Order()
{
OrderDate = DateTime.Now.AddMinutes(),
Customer = customer2
}; customer1.Orders.Add(order1);
customer1.Orders.Add(order2);
customer2.Orders.Add(order3);
customer2.Orders.Add(order4); customerService.Add(customer1); //customer1及其Order1与Order2能成功插入，因为他们与Customer2不在同一个事务
customerService.Add(customer2); //Customer2插入失败，Order3和Order4也不能成功插入。 Assert.IsNull(customerService.Get(customer1.CustomerId));
Assert.IsNull(orderService.Find(order1.OrderId));
Assert.IsNull(orderService.Find(order2.OrderId));
}
-----------------------------------------------
关于事务操作的添加：
session.Flush();//清除一级缓存
是否会立即保存到数据库
结论是:不会立即保存的数据库，而是等到调用transaction.Commit();才真正保存到数据库：
图解：