01-08-02【Nhibernate (版本3.3.1.4000) 出入江湖】二级缓存：NHibernate自带的HashtableProvider
第一步骤：hibernate.cfg.xml文件补上如下配置：
<?xml version="1.0" encoding="utf-8"?>
<!--
This template was written to work with NHibernate.Test.
Copy the template to your NHibernate.Test project folder and rename it in hibernate.cfg.xml and change it
for your own use before compile tests in VisualStudio.
-->
<!-- This is the System.Data.dll provider for SQL Server -->
<hibernate-configuration xmlns="urn:nhibernate-configuration-2.2" >
<session-factory name="NHibernate.Test123456">
<property name="connection.driver_class">NHibernate.Driver.SqlClientDriver</property>
<property name="connection.connection_string"> <!--用于测试自动生成数据库表（不自动生成数据库）-->
<!--<property name="hbm2ddl.auto">update</property>-->
Server=(local);initial catalog=NHibernateSampleAutoCreateTable;Integrated Security=SSPI <!--Server=(local);initial catalog=NHibernateSample;Integrated Security=SSPI-->
</property>
<property name="dialect">NHibernate.Dialect.MsSql2008Dialect</property> <!--输出所有的SQL语句到控制台，一般开发打开这个-->
<property name="show_sql">true</property>
<!--整齐的SQL输出到控制台-->
<property name="format_sql">true</property>
<!--自动生成数据库表（不自动生成数据库）-->
<property name="hbm2ddl.auto">update</property>
<!--在数据表设计中如果采用了 bit 类型的字段，并且对应了业务类中类型为 bool 值，一定要如上设置下-->
<property name="query.substitutions">true , false , yes 'Y', no 'N'</property> <!--=======加入Nhibernate自身的HashtabeCache的二级缓存配置=============================-->
<!--1.配置二级缓存提供程序-->
<property name="cache.provider_class">NHibernate.Cache.HashtableCacheProvider</property>
<!--2.显式启用二级缓存-->
<property name ="cache.use_second_level_cache">true</property>
<!--4.启动查询缓存-->
<property name="cache.use_query_cache">true</property> <!--实体类所在的程序集-->
<mapping assembly="Model"/>
<!--3.配置映射的二级缓存-->
<class-cache class="Model.Customer,Model" usage="read-write"/>
<!--<collection-cache collection ="集合名称" region="默认集合名称"
usage="read-write"/>--> </session-factory>
</hibernate-configuration>
实体类上也可以配二级缓存策略,如：
Customer.hbm.xml
<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
namespace="Model"
assembly="Model"
default-lazy="true"> <class name="Model.Customer, Model"
table="Customer"
discriminator-value="" lazy="false">
<!--.这个不是必须的，因为在nhibernate.cfg.xml文件中已经有了一个总配置
.cache标签必须在id标签前面
-->
<cache usage="read-write"/>
<!--unsaved-value="" 主键表中不需要定义，而是需要在子表中定义-->
<id name="CustomerId"
column="CustomerId"
type="int"
unsaved-value="">
<generator class="native" />
<!-- unsaved-value used to be null and generator was increment in h2.0.3 -->
</id>
。。。。。。。。。。。。。。。
<set name="Orders" table="Order" lazy="true"
generic="true"
inverse="false" cascade="all">
<!--二级缓存策略-->
<cache usage="read-write"/>
<key column="CustomerId" foreign-key="FK_CustomerOrders"/>
<one-to-many class="Model.Order,Model"/>
</set>
</class>
</hibernate-mapping>
测试1：
二级缓存与Get方法+Lazy设置的关系：
测试图解：
经测试，得出如下结论：
Get方法+Lazy配置+二级缓存测试结果：
Customer.hbm.xml的<Set name="Orders" Customer.hbm.xml的<Set name="Orders"
lazy="true"> lazy="false">
<cache usage="read-write"/> <cache usage="read-write"/>
Customer数据库中Order个数等于零 Get方法从二级缓存获取Customer Get方法从二级缓存获取Customer
Customer数据库中Order个数大于零 Get方法从二级缓存获取Customer Get方法从不从二级缓存获取Customer
------------------------更新二级缓存测试---------------------------------------------------------------
测试更新-1：
前置条件：
1.Customer没Orders
2.
<class name="Model.Customer, Model"
table="Customer"
discriminator-value="" lazy="true">
<!--.这个不是必须的，因为在nhibernate.cfg.xml文件中已经有了一个总配置
.cache标签必须在id标签前面
-->
<cache usage="read-write"/>
测试代码：
[TestMethod]
public void TestSessionFactoryCacheUpdateCustomerHavingNotOrders()
{
CustomerService customerService = new CustomerService(); Customer customer = new Customer()
{
FirstName = "Test",
LastName = "TestSessionFactoryCache",
Age =
}; customerService.Add(customer);
int customerId = customer.CustomerId; Console.WriteLine("第1次获取数据并且更新------------------------------：");
Customer customerGet1 = customerService.Get(customerId); Console.WriteLine("更新前：Id:{0}-->FirtstName:{1}"
, customerGet1.CustomerId, customerGet1.FirstName); customerGet1.FirstName = "我是更新后的FirstName"; //修改FirstName
customerService.Update(customerGet1); //保存更新得到数据库。 Console.WriteLine("更新后：Id:{0}-->FirtstName:{1}"
, customerGet1.CustomerId, customerGet1.FirstName); Console.WriteLine("第2次获取数据==============================：");
Customer customerGet2 = customerService.Get(customerId);
Console.WriteLine("Id:{0}-->FirtstName:{1}"
, customerGet2.CustomerId, customerGet2.FirstName); Console.WriteLine("第3次获取数据==============================：");
Customer customerGet3 = customerService.Get(customerId);
Console.WriteLine("Id:{0}-->FirtstName:{1}"
, customerGet3.CustomerId, customerGet3.FirstName); }
测试结果：
NHibernate:
INSERT
INTO
Customer
(Version, Firstname, Lastname, Age)
VALUES
(@p0, @p1, @p2, @p3);
select
SCOPE_IDENTITY();
@p0 = [Type: Int32 ()],
@p1 = 'Test' [Type: String ()],
@p2 = 'TestSessionFactoryCache' [Type: String ()],
@p3 = [Type: Int32 ()]
第1次获取数据并且更新------------------------------：
NHibernate:
SELECT
customer0_.CustomerId as CustomerId0_0_,
customer0_.Version as Version0_0_,
customer0_.Firstname as Firstname0_0_,
customer0_.Lastname as Lastname0_0_,
customer0_.Age as Age0_0_
FROM
Customer customer0_
WHERE
customer0_.CustomerId=@p0;
@p0 = [Type: Int32 ()]
NHibernate:
SELECT
orders0_.CustomerId as CustomerId1_,
orders0_.OrderId as OrderId1_,
orders0_.OrderId as OrderId1_0_,
orders0_.Version as Version1_0_,
orders0_.OrderDate as OrderDate1_0_,
orders0_.CustomerId as CustomerId1_0_
FROM
[
Order] orders0_ WHERE
orders0_.CustomerId=@p0;
@p0 = [Type: Int32 ()]
更新前：Id:-->FirtstName:Test
NHibernate:
UPDATE
Customer
SET
Version = @p0,
Firstname = @p1,
Lastname = @p2,
Age = @p3
WHERE
CustomerId = @p4
AND Version = @p5;
@p0 = [Type: Int32 ()], @p1 = '我是更新后的FirstName' [Type: String ()], @p2 = 'TestSessionFactoryCache' [Type: String ()], @p3 = [Type: Int32 ()], @p4 = [Type: Int32 ()], @p5 = [Type: Int32 ()]
更新后：Id:-->FirtstName:我是更新后的FirstName
第2次获取数据==============================：
Id:-->FirtstName:我是更新后的FirstName
第3次获取数据==============================：
Id:-->FirtstName:我是更新后的FirstName
---------------------------------------------------
测试更新-2
前置条件：
1.Customer有Orders
2.
<set name="Orders" table="Order" lazy="false"
generic="true"
inverse="false" cascade="all">
<!--二级缓存策略-->
<cache usage="read-write"/>
<key column="CustomerId" foreign-key="FK_CustomerOrders"/>
<one-to-many class="Model.Order,Model"/>
</set>
测试代码和结果：表明2级缓存失效
[TestMethod]
public void TestSessionFactoryCacheUpdateCustomerHavingOrders()
{
CustomerService customerService = new CustomerService(); Customer customer = new Customer()
{
FirstName = "Test",
LastName = "TestSessionFactoryCache",
Age =
}; Order order1 = new Order()
{
OrderDate = DateTime.Now,
Customer = customer
};
customer.Orders.Add(order1); customerService.Add(customer);
int customerId = customer.CustomerId; Console.WriteLine("第1次获取数据并且更新------------------------------：");
Customer customerGet1 = customerService.Get(customerId); Console.WriteLine("更新前：Id:{0}-->FirtstName:{1}"
, customerGet1.CustomerId, customerGet1.FirstName); customerGet1.FirstName = "我是更新后的FirstName"; //修改FirstName
customerService.Update(customerGet1); //保存更新得到数据库。 Console.WriteLine("更新后：Id:{0}-->FirtstName:{1}"
, customerGet1.CustomerId, customerGet1.FirstName); Console.WriteLine("第2次获取数据==============================：");
Customer customerGet2 = customerService.Get(customerId);
Console.WriteLine("Id:{0}-->FirtstName:{1}"
, customerGet2.CustomerId, customerGet2.FirstName); Console.WriteLine("第3次获取数据==============================：");
Customer customerGet3 = customerService.Get(customerId);
Console.WriteLine("Id:{0}-->FirtstName:{1}"
, customerGet3.CustomerId, customerGet3.FirstName); }
NHibernate:
INSERT
INTO
Customer
(Version, Firstname, Lastname, Age)
VALUES
(@p0, @p1, @p2, @p3);
select
SCOPE_IDENTITY();
@p0 = [Type: Int32 ()],
@p1 = 'Test' [Type: String ()],
@p2 = 'TestSessionFactoryCache' [Type: String ()],
@p3 = [Type: Int32 ()]
NHibernate:
INSERT
INTO
[ Order] (
Version, OrderDate, CustomerId
)
VALUES
(@p0, @p1, @p2);
select
SCOPE_IDENTITY();
@p0 = [Type: Int32 ()],
@p1 = // :: [Type: DateTime ()],
@p2 = [Type: Int32 ()]
第1次获取数据并且更新------------------------------：
NHibernate:
SELECT
customer0_.CustomerId as CustomerId0_0_,
customer0_.Version as Version0_0_,
customer0_.Firstname as Firstname0_0_,
customer0_.Lastname as Lastname0_0_,
customer0_.Age as Age0_0_
FROM
Customer customer0_
WHERE
customer0_.CustomerId=@p0;
@p0 = [Type: Int32 ()]
NHibernate:
SELECT
orders0_.CustomerId as CustomerId1_,
orders0_.OrderId as OrderId1_,
orders0_.OrderId as OrderId1_0_,
orders0_.Version as Version1_0_,
orders0_.OrderDate as OrderDate1_0_,
orders0_.CustomerId as CustomerId1_0_
FROM
[
Order] orders0_ WHERE
orders0_.CustomerId=@p0;
@p0 = [Type: Int32 ()]
更新前：Id:-->FirtstName:Test
NHibernate:
UPDATE
Customer
SET
Version = @p0,
Firstname = @p1,
Lastname = @p2,
Age = @p3
WHERE
CustomerId = @p4
AND Version = @p5;
@p0 = [Type: Int32 ()], @p1 = '我是更新后的FirstName' [Type: String ()], @p2 = 'TestSessionFactoryCache' [Type: String ()], @p3 = [Type: Int32 ()], @p4 = [Type: Int32 ()], @p5 = [Type: Int32 ()]
NHibernate:
UPDATE
[
Order] SET
Version = @p0,
OrderDate = @p1,
CustomerId = @p2
WHERE
OrderId = @p3
AND Version = @p4;
@p0 = [Type: Int32 ()], @p1 = // :: [Type: DateTime ()], @p2 = [Type: Int32 ()], @p3 = [Type: Int32 ()], @p4 = [Type: Int32 ()]
更新后：Id:-->FirtstName:我是更新后的FirstName
第2次获取数据==============================：
NHibernate:
SELECT
order0_.OrderId as OrderId1_0_,
order0_.Version as Version1_0_,
order0_.OrderDate as OrderDate1_0_,
order0_.CustomerId as CustomerId1_0_
FROM
[
Order] order0_ WHERE
order0_.OrderId=@p0;
@p0 = [Type: Int32 ()]
Id:-->FirtstName:我是更新后的FirstName
第3次获取数据==============================：
NHibernate:
SELECT
order0_.OrderId as OrderId1_0_,
order0_.Version as Version1_0_,
order0_.OrderDate as OrderDate1_0_,
order0_.CustomerId as CustomerId1_0_
FROM
[
Order] order0_ WHERE
order0_.OrderId=@p0;
@p0 = [Type: Int32 ()]
Id:-->FirtstName:我是更新后的FirstName
将该测试(测试更新-2)的前置条件2改为：
lazy="true" ，即修改后的配置如下：
<set name="Orders" table="Order" lazy="true"
generic="true"
inverse="false" cascade="all">
<!--二级缓存策略-->
<cache usage="read-write"/>
<key column="CustomerId" foreign-key="FK_CustomerOrders"/>
<one-to-many class="Model.Order,Model"/>
</set>
lazy="true" 时，2级缓存生效，测试结果如下所示：
NHibernate:
INSERT
INTO
Customer
(Version, Firstname, Lastname, Age)
VALUES
(@p0, @p1, @p2, @p3);
select
SCOPE_IDENTITY();
@p0 = [Type: Int32 ()],
@p1 = 'Test' [Type: String ()],
@p2 = 'TestSessionFactoryCache' [Type: String ()],
@p3 = [Type: Int32 ()]
NHibernate:
INSERT
INTO
[ Order] (
Version, OrderDate, CustomerId
)
VALUES
(@p0, @p1, @p2);
select
SCOPE_IDENTITY();
@p0 = [Type: Int32 ()],
@p1 = // :: [Type: DateTime ()],
@p2 = [Type: Int32 ()]
第1次获取数据并且更新------------------------------：
NHibernate:
SELECT
customer0_.CustomerId as CustomerId0_0_,
customer0_.Version as Version0_0_,
customer0_.Firstname as Firstname0_0_,
customer0_.Lastname as Lastname0_0_,
customer0_.Age as Age0_0_
FROM
Customer customer0_
WHERE
customer0_.CustomerId=@p0;
@p0 = [Type: Int32 ()]
更新前：Id:-->FirtstName:Test
NHibernate:
UPDATE
Customer
SET
Version = @p0,
Firstname = @p1,
Lastname = @p2,
Age = @p3
WHERE
CustomerId = @p4
AND Version = @p5;
@p0 = [Type: Int32 ()], @p1 = '我是更新后的FirstName' [Type: String ()], @p2 = 'TestSessionFactoryCache' [Type: String ()], @p3 = [Type: Int32 ()], @p4 = [Type: Int32 ()], @p5 = [Type: Int32 ()]
更新后：Id:-->FirtstName:我是更新后的FirstName
第2次获取数据==============================：
Id:-->FirtstName:我是更新后的FirstName
第3次获取数据==============================：
Id:-->FirtstName:我是更新后的FirstName
经测试，得出如下结论：
Update方法+Get方法+Lazy配置+二级缓存测试结果：
Customer.hbm.xml的<Set name="Orders" Customer.hbm.xml的<Set name="Orders"
lazy="true"> lazy="false">
<cache usage="read-write"/> <cache usage="read-write"/>
----------------------------------------------------------------------------------------------------------------------------------------
Customer数据库中Order个数等于零 用 Update方法Customer后， 用 Update方法Customer后，
Get方法从二级缓存获取Customer Get方法从二级缓存获取Customer
-----------------------------------------------------------------------------------------------------------------------------------------
Customer数据库中Order个数大于零 用 Update方法Customer后 用 Update方法Customer后
Get方法从二级缓存获取Customer Get方法从不从二级缓存获取Customer
-----------------------------------------------------------------------------------------------------------------------------------------
01-08-02【Nhibernate (版本3.3.1.4000) 出入江湖】二级缓存：NHibernate自带的HashtableProvider的更多相关文章
- 01-08-03【Nhibernate (版本3.3.1.4000) 出入江湖】二级缓存：NHibernate自带的HashtableProvider之缓存管理
http://www.cnblogs.com/lyj/archive/2008/11/28/1343418.html 管理NHibernate二级缓存 NHibernate二级缓存由ISessionF ...
- 01-08-05【Nhibernate (版本3.3.1.4000) 出入江湖】NHibernate二级缓存：第三方MemCache缓存
一.准备工作 [1]根据操作系统(位数)选择下载相应版本的MemCache, MemCache的下载和安装,参看: http://www.cnblogs.com/easy5weikai/p/37606 ...
- 01-03-03【Nhibernate (版本3.3.1.4000) 出入江湖】cascade的测试
相关文章: http://www.cnblogs.com/amboyna/archive/2008/02/18/1072260.html注意上面是hibernate,不是Nhibernate,这解释是 ...
- 01-03-02-2【Nhibernate (版本3.3.1.4000) 出入江湖】CRUP操作-Save方法的一些问题
此文由于当时不知道NHibernate的Sava方法不是更新操作,不知道Save就是Add,造成如下荒唐的求证过程,但结论是对的 ,可报废此文,特此声明. NHibernate--Save方法: Cu ...
- 01-08-01【Nhibernate (版本3.3.1.4000) 出入江湖】NHibernate中的一级缓存
缓存的范围? 1.事务范围 事务范围的缓存只能被当前事务访问,每个事务都有各自的缓存,缓存内的数据通常采用相互关联的对象形式.缓存的生命周期依赖于事务的生命周期,只有当事务结束时,缓存的生命周期才会结 ...
- 01-05-01-1【Nhibernate (版本3.3.1.4000) 出入江湖】延迟加载及其class和集合（set、bag等）的Lazy属性配置组合对Get和Load方法的影响
这篇文章 http://ayende.com/blog/3988/nhibernate-the-difference-between-get-load-and-querying-by-id One o ...
- 01-07-01【Nhibernate (版本3.3.1.4000) 出入江湖】并发控制
Nhibernate 并发控制 [1]悲观并发控制 正在使用数据的操作,加上锁,使用完后解锁释放资源. 使用场景:数据竞争激烈,锁的成本低于回滚事务的成本 缺点:阻塞,可能死锁 [2]乐观并发控制: ...
- 01-03-01【Nhibernate (版本3.3.1.4000) 出入江湖】id标签的unsaved-value属性
父表 <class name="Model.Customer, Model" discriminator-value="0"> <!--uns ...
- 01-08-04【Nhibernate (版本3.3.1.4000) 出入江湖】二级缓存：NHibernate自带的HashtableProvider之命名缓存
http://www.cnblogs.com/lyj/archive/2008/11/28/1343418.html 可以在映射文件中定义命名查询,<query>元素提供了很多属性,可以用 ...
随机推荐
- C#中 StringBuilder类 与 String类的区别---（转）
在找工作的时候,去了些公司,避免不了要面试和笔试.不过一般最起初的是笔试.我印象中有这样有一道题目:StringBuilder类与 String类的区别?那时候我不太清楚这两个类的区别,今天在看代 ...
- 20141110--SQL视图
--------------------------视图--------------------- --视图是一个虚拟表,数据来自于原表,原表的数据改变,视图也会改变 select Student.S ...
- WCF之安全
传输安全. 点对点,对整个消息进行加密,性能损失,当中间者不安全时,消息也就不安全了. WCF中支持传输安全和消息安全模式. 通过配置和绑定来设置.<Security Mode =Transct ...
- 反射-Reflect
1.得到一份Class(同一个类在JVM中只有一份字节码) 三种方式:类名.class, Class.forName("全限定名");, 对象.getClass(); 基本类型 i ...
- C++ 双链表基本操作
上一篇博客主要总结了单向链表,这次再总结一下双向链表. 1.概念 双向链表也叫双链表,是链表的一种,它的每个数据结点中都有两个指针,分别指向直接后继和直接前驱.所以,从双向链表中的任意一个结点开始,都 ...
- 判断php数组维度的小例子
分享一例判断php数组维度的代码,供大家参考. 如下所示: <?php /** * 返回数组的维度 * @param [type] $arr [description] * @return [t ...
- java 语法糖
package syntax.autoCase; import java.util.Arrays; import java.util.List; public class autoCase { pub ...
- iOS 点击return或者点击屏幕键盘消失
//定义两个文本框 UITextField *textName; UITextField *textSummary; //点击return 按钮 去掉 -(BOOL)textFieldShouldRe ...
- [转]bat中的特殊字符，以及需要在bat中当做字符如何处理
bat中的特殊字符,以及需要在bat中当做字符如何处理 批处理.Bat 中特殊符号的实际作用,Windows 批处理中特殊符号的作用: @ \\隐藏命令的回显. ~ \\在for中表示使用增强的变量扩 ...
- MyEclipse管理部署Maven项目 供调试
今天对Maven的一个项目弄到头大,用MyEclipse10.x做了半天都没有部署成功. 后来发现用maven自己的maven4myelipse插件配置一下Goals:tomcat:run就好了,其他 ...