Nếu cậu cài cả Windows và Ubuntu trên một máy. Nhưng khi cậu cài lại Windows thì trình GRUB sẽ mất do GRUB cài trên MBR (Master Boot Record) – Nếu tạo file backup Windows bằng Acronis True Image hoặc Ghost,… thì sẽ không bị mất GRUB khi restore lại. Hoặc nếu bạn cài ubuntu trước rùi mới cài WinXP thì bạn cũng chỉ vào được XP thôi vì trình GRUB đã hỏng.

I downloaded NHibernate 2.0 today and started to play around with it, only to be greeted by a host of configuration errors like System.InvalidOperationException : Could not find the dialect in the configuration. It was then I remembered reading somewhere about some changes to the configuration syntax, so I downloaded the source and looked at the examples (after a brief, ill-fated search for NHibernate 2.0-specific documentation*). Here is an example of how an App.config looked for NHibernate 1.2:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
   <configSections>
    <section name="nhibernate" type="System.Configuration.NameValueSectionHandler,
             System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
    [...]
   </configSections>

   <nhibernate>
    <add key="hibernate.connection.provider" value="NHibernate.Connection.DriverConnectionProvider" />
    <add key="hibernate.dialect" value="NHibernate.Dialect.MsSql2005Dialect" />
    <add key="hibernate.connection.driver_class" value="NHibernate.Driver.SqlClientDriver" />
    <add key="hibernate.connection.connection_string" value="Server=INNORIA-4; Initial Catalog=iTMDBTemp;
           User Id=sa;Password=1234;" />
    <add key="hibernate.show_sql" value="true" />
   </nhibernate>
   [...]
 </configuration>

And here is the equivalent for version 2.0:

<?xml version="1.0" encoding="utf-8" ?>
  <configuration>
 <configSections>
   <section name="hibernate-configuration" type="NHibernate.Cfg.ConfigurationSectionHandler,
              NHibernate" />
   [...]
  </configSections>

  <hibernate-configuration xmlns="urn:nhibernate-configuration-2.2" >
    <session-factory>
     <property name="connection.provider">NHibernate.Connection.DriverConnectionProvider</property>
     <property name="dialect">NHibernate.Dialect.MsSql2005Dialect</property>
     <property name="connection.driver_class">NHibernate.Driver.SqlClientDriver</property>
     <property name="connection.connection_string">Server=INNORIA-4;Initial Catalog=iTMDBTemp;
            User Id=sa;Password=1234;</property>
     <property name="show_sql">true</property>
    </session-factory>
  </hibernate-configuration>
   [...]
 </configuration>

The main changes are:

• We aren’t using an nhibernate configuration section, it’s hibernate-configuration now (yay for more typing! ).
• We now have a session-factory child node for adding the configuration properties.
• We aren’t adding properties using the <add key="..." value="..." /> syntax. Instead we are using <property name="...">(property value)</property>.
• The property names aren’t prefixed by “hibernate” anymore, so “hibernate.connection.provider” becomes “connection.provider“.

Moral of the story is to check the source first — the NHibernate.Examples folder is filled with helpful goodies. Svend Tofte also has a helpful post on setting up NHibernate 2.0.

Xin chào các bạn!

Tôi tên: Nguyễn Trường Xuân (Nguyen Truong Xuan), biệt danh Xc (Xuân còi). Mình sắp tốt nghiệp đại học ngành Tin học, khoa Kỹ thuật – Công nghệ – Môi trường. Mình đang ngồi dưới mái trường ĐH An Giang đây – hi hi mưa quá trùi (hắc xì).

Thui, mình về “ôm căn” đây – hic đói quá.