2004年12月存档-思归呓语

怎样做才能让VS.NET IDE支持新的扩展名

在我们的网络应用里，我们需要生成新的Project Items模板，而且拥有新的扩展名(譬如".joy")。但我们希望由此产生的新文件(譬如"a.joy") 跟通常生成的"a.aspx"文件的行为一样，即，有设计视图，可以往上面拖控件，HTML视图支持Intellisense，等等。

我们参照了Chris Sells网站上Michael Weinhardt的文章，经过少许改动后，能够在VS.NET IDE里成功生成新的文件(a.joy)以及相应的code behind文件(a.joy.vb)。然后参照下面2个连接里的提示，

http://weblogs.asp.net/ralfw/archive/2004/11/05/252865.aspx

http://dotnetjunkies.com/WebLog/darrell.norton/archive/2004/04/21/11837.aspx (这个连接中的最后一个答复者遇到了跟我们一样的问题)

我们对注册表里下列的几个Key添加了对应的条目，

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\7.1\Editors
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\7.1\Editors
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\7.1\Languages

理论上讲，在编辑a.joy时，我们应该得到HTML编辑器，但我们得到的却是XML编辑器。

我们估计是注册表里的问题，所以我们试着改动注册表，几乎找遍了所有跟".aspx"有关的条目，都为".joy"添加了相应的条目，但我们得到的却总是XML编辑器。

感觉这不应该是个很难的问题，因为改动扩展名是很正常的事，譬如微软中国网站用的是“.mspx”。实际上，要运行的话，只要改动IIS里的应用影射，以及在machine.config或web.config里添加相应的httpHandler即可。

估计是我们的方法不对，这里高人甚多，特别是这里微软VS.NET产品组的朋友，如果能指点一下的话，不胜感激之致

posted on 2004-12-17 05:41:00 by saucer 评论(20) 阅读(5512)

NHibernate

前几天在回答一个问题时，我是凭直感回答的，因为没试过。正好最近对O/R Mapper感兴趣，所以决定试一下NHibernate，发现其Quick Start Guide 有几个地方不是很清楚，现在把试验的步骤记录如下。(因为试验的这台机器没有VS.NET，所以用了csc.exe来直接编译)

0. 安装
NHibernate
http://sourceforge.net/project/showfiles.php?group_id=73818
log4net
http://sourceforge.net/project/showfiles.php?group_id=31983&release_id=171808
1. 生成数据库
use master
go
create database NHibernate
go
use NHibernate
go
CREATE TABLE users (
  LogonID nvarchar(20) NOT NULL default '0',
  Name nvarchar(40) default NULL,
  Password nvarchar(20) default NULL,
  EmailAddress nvarchar(40) default NULL,
  LastLogon datetime default NULL,
  PRIMARY KEY  (LogonID)
)
go
2. 生成persistent类: User.cs
using System;
//note, in the Quick Guide, it says NHibernate.Demo.QuickStart
//you could use it, then you need to change the class name in 
//the User.hbm.xml file
namespace NHibernate.Examples.QuickStart
{
 public class User
 {
  private string id;
  private string userName;
  private string password;
  private string emailAddress;
  private DateTime lastLogon;
  public User()
  {
  }
  public string Id 
  {
   get { return id; }
   set { id = value; }
  }
  public string UserName 
  {
   get { return userName; }
   set { userName = value; }
  }
  public string Password 
  {
   get { return password; }
   set { password = value; }
  }
  public string EmailAddress 
  {
   get { return emailAddress; }
   set { emailAddress = value; }
  }
  public DateTime LastLogon 
  {
   get { return lastLogon; }
   set { lastLogon = value; }
  }
  
 }
}
3. 生成影射文件 User.hbm.xml
<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.0">
 <class name="NHibernate.Examples.QuickStart.User, NHibernate.Examples" table="users">
  <id name="Id" column="LogonId" type="String" length="20"> 
   <generator class="assigned" /> 
  </id> 
  <property name="UserName" column= "Name" type="String" length="40"/> 
  <property name="Password" type="String" length="20"/> 
  <property name="EmailAddress" type="String" length="40"/>
  <property name="LastLogon" type="DateTime"/>
 </class>
</hibernate-mapping>
4. 生成配置文件 TestUser.exe.config
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <configSections>
         <section name="nhibernate" type="System.Configuration.NameValueSectionHandler, System, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, Custom=null" />
         <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
 </configSections>
 
 <nhibernate>
  <add 
   key="hibernate.connection.provider"          
   value="NHibernate.Connection.DriverConnectionProvider" 
  />
  <add 
   key="hibernate.dialect"                      
   value="NHibernate.Dialect.MsSql2000Dialect" 
  />
  <add 
   key="hibernate.connection.driver_class"          
   value="NHibernate.Driver.SqlClientDriver" 
  />
  <add 
   key="hibernate.connection.connection_string" 
   value="Server=localhost;initial catalog=nhibernate;Integrated Security=SSPI" 
  />
 </nhibernate>
 <log4net>
  <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
   <layout type="log4net.Layout.PatternLayout">
    <param name="ConversionPattern" value="%d [%t] %-5p %c [%x] -%m%n" />
   </layout>
   <root>
    <level value="INFO" />
    <appender-ref ref="ConsoleAppender" />
   </root>
  </appender>
 </log4net>
</configuration>
 
 
5. 生成测试程序:TestUser.cs
using System;
//using System.Configurations;
using NHibernate;
using NHibernate.Cfg;
using System.Collections;
using NHibernate.Examples.QuickStart;
using NHibernate.Expression;
class TestConfig
{
  public static void Main()
  {
 Configuration cfg = new Configuration();
 cfg.AddAssembly("NHibernate.Examples");
 ISessionFactory factory = cfg.BuildSessionFactory();
 ISession session = factory.OpenSession();
 ITransaction transaction = session.BeginTransaction();
 
 User newUser = new User();
 newUser.Id = "joe_cool";
 newUser.UserName = "Joseph Cool";
 newUser.Password = "abc123";
 newUser.EmailAddress = "joe@cool.com";
 newUser.LastLogon = DateTime.Now;
   
 // Tell NHibernate that this object should be saved
 session.Save(newUser);
 // commit all of the changes to the DB and close the ISession
 transaction.Commit();
 session.Close();
 
 Console.WriteLine("go check in the database, enter return to continue....");
 Console.ReadLine();
 //System.Threading.Thread.Sleep(2000);
 //Console.WriteLine("enter return to continue....");
 //Console.ReadLine();
 // open another session to retrieve the just inserted user
 session = factory.OpenSession();
 User joeCool = (User)session.Load(typeof(User), "joe_cool");
 // set Joe Cool's Last Login property
 joeCool.LastLogon = DateTime.Now;
 session.Update(joeCool);
 // flush the changes from the Session to the Database
 session.Flush();
 //Console.WriteLine("enter return to continue....");
 //Console.ReadLine();
 IList userList = session.CreateCriteria(typeof(User)).List();
 foreach(User user in userList)
 {
  Console.WriteLine(user.Id + " last logged in at " + user.LastLogon);
 }
 IList recentUsers = session.CreateCriteria(typeof(User))
     .Add(Expression.Gt("LastLogon", new DateTime(2004, 03, 14, 20, 0, 0)))
     .List();
 foreach(User user in recentUsers)
 {
  Console.WriteLine(user.Id + " last logged in at " + user.LastLogon);
 }
 
 session.Close();
  }
}
6. copy or reference
NHibernate.dll
HashCodeProvider.dll (needed at runtime)
log4net.dll (needed at runtime)
7. compile User.cs:
csc /t:library /out:NHibernate.Examples.dll /resource:User.hbm.xml User.cs
8. compile TestUser.cs:
csc /r:NHibernate.dll,NHibernate.Examples.dll TestUser.cs
9. run TestUser.exe
F:\test>TestUser
go check in the database, enter return to continue....
joe_cool last logged in at 12/15/2004 9:42:00 PM
joe_cool last logged in at 12/15/2004 9:42:00 PM

注，其中log4net的配置是从原提问者inelm处学来的

posted on 2004-12-16 11:32:00 by saucer 评论(8) 阅读(9757)

Rumbaugh的新书

James Rumbaugh，Grady Booch，Ivar Jacobson人称“Three Amigos”，基于他们各自的方法，博采众家之长，兼收并蓄，融会贯通，共同制定了统一建模语言(UML)

N年前，当我开始我的新的职业生涯时，三位的大作

Object-Oriented Analysis and Design with Applications (2nd Edition)
by Grady Booch
Publisher: Addison-Wesley Professional; 2 edition (September 30, 1993)
ISBN: 0805353402

Object-Oriented Modeling and Design
by James R Rumbaugh, Michael R. Blaha, William Lorensen, Frederick Eddy, William Premerlani
Publisher: Prentice Hall; 1st edition (October 1, 1990)
ISBN: 0136298419

Object-Oriented Software Engineering: A Use Case Driven Approach
by Ivar Jacobson
Publisher: Addison-Wesley Pub Co; 1st edition (June 30, 1992)
ISBN: 0201544350

对我的影响多多。如今，时隔14年后，Rumbaugh终于更新他的经典名作了，

Object-Oriented Modeling and Design with UML (2nd Edition)
by James R Rumbaugh, Michael R Blaha, William Premerlani, Frederick Eddy, William Lorensen
Publisher: Prentice Hall; 2 edition (November 15, 2004)
ISBN: 0130159204

Grady Booch大概不会步其后尘，因为他的宏大的《软件架构手册(Handbook of Software Architecture)》一书好像也才刚开了一个头

posted on 2004-12-03 04:48:00 by saucer 评论(9) 阅读(2398)

淘汰的模式？

Martin Fowler最近的一篇bliki，是关于今年的“面向对象编程，系统，语言，应用(Object-Oriented Programming, Systems, Languages, and Applications， OOPSLA) ”大会的。

他谈到，在其中的一个研讨会上，他们重新评估了《设计模式》里的模式，认为在当前的形式上，工厂方法(Factory Method)，桥( Bridge),享元(Flyweight), 和解释器(Interpreter)模式应该从经典模式中删除，而对单实例(Singleton) 与责任链(Chain of Responsibility)模式的看法则有分歧。删除的大概理由，有的是因为其涵义与常规用法不同，有的是因为不受欢迎，而其他的则是因为不常见或有其他更好的模式可以代替这些模式。

在TheServerSide.COM上看到一篇相关的帖子，
Martin Fowler on changes to the Gang Of Four, and OOPSLA

在这篇bliki里，还提到了他支持的座谈会“.NET与Java交火(shootout)”，参加者包括Microsoft的Anders Hejlsberg和Don Box，Sun的John Crupi，IBM的Rob High，Cincom的Alan Knight。在eWeek上有个相关的报道，
Programming Legends Debate .Net, J2EE

posted on 2004-12-02 23:59:00 by saucer 评论(6) 阅读(2858)

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怎样做才能让VS.NET IDE支持新的扩展名

NHibernate

Rumbaugh的新书

淘汰的模式？