NHibernate实例分享：Northwind Mapping
NHibernate实例分享：Northwind Mapping本节内容
[*]说明
[*]代码
[*]参考资料
说明
NHibernate的强大之处在于其映射，我们在设计Domain中，经常为各种各样的映射感到头痛，为此我把微软SQL Server2000自带的Northwind数据库使用NHibernate映射了一下，需要的请下载其代码，在文章中就不仔细说明了，一切都在代码中。
顺便说一句，其实映射不必这么复杂的写出全部：
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
<class name="YourApp.Common.DataObjects.Address, YourApp"
table="Address">
<id name="Id" type="Int32" unsaved-value="null">
<column name="Id"
length="4" sql-type="int"
not-null="true" unique="true" index="PK_Address"/>
<generator class="native" />
</id>
<property name="Address1" type="String">
<column name="Address1" length="255"
sql-type="varchar" not-null="true"/>
</property>
<property name="Address2" type="String">
<column name="Address2" length="255"
sql-type="varchar" not-null="false"/>
</property>
<property name="City" type="String">
<column name="City" length="255"
sql-type="varchar" not-null="true"/>
</property>
<property name="State" type="String">
<column name="`State`" length="2"
sql-type="varchar" not-null="true"/>
</property>
<property name="Zip" type="String">
<column name="Zip" length="12"
sql-type="varchar" not-null="true"/>
</property>
<many-to-one name="Contact" class="YourApp.Common.DataObjects.Contact, YourApp">
<column name="Contact_Id" length="4"
sql-type="int" not-null="false"/>
</many-to-one>
<bag name="BillToOrderHeaders" inverse="true" lazy="true" cascade="all-delete-orphan">
<key column="BillToAddress_Id"/>
<one-to-many
class="YourApp.Common.DataObjects.OrderHeader, YourApp"/>
</bag>
<bag name="ShipToOrderHeaders" inverse="true" lazy="true" cascade="all-delete-orphan">
<key column="ShipToAddress_Id"/>
<one-to-many
class="YourApp.Common.DataObjects.OrderHeader, YourApp"/>
</bag>
</class>
</hibernate-mapping>其实这样就可以了，不要把默认的都写上去的，我这个例子映射写的最简洁，大家下载看看吧
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
assembly="YourApp"
namespace="YourApp.Common.DataObjects">
<class name="Address">
<id name="Id">
<generator class="native" />
</id>
<property name="Address1" not-null="true" />
<property name="Address2"/>
<property name="City" not-null="true"/>
<property name="State" length="2" not-null="true"/>
<property name="Zip" length="12" not-null="true"/>
<many-to-one name="Contact" column="Contact_Id"/>
<bag name="BillToOrderHeaders" inverse="true" cascade="all-delete-orphan">
<key column="BillToAddress_Id"/>
<one-to-many class="OrderHeader"/>
</bag>
<bag name="ShipToOrderHeaders" inverse="true" cascade="all-delete-orphan">
<key column="ShipToAddress_Id"/>
<one-to-many class="OrderHeader"/>
</bag>
</class>
</hibernate-mapping>代码
下载地址：http://code.google.com/p/yjinglee/downloads/list
参考资料
Microsoft:Northwind and pubs Sample Databases for SQL Server 2000
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