我读了本文 http://www.mattfreeman.co.uk/2009/01/nhibernate-21-trunk-entity-name-some-inheritance-and-dynamic-component/,并且正在寻找一种在运行时动态更改映射的方法,以使用依赖于父对象中的值的一对多绑定到不同的表。
这是我的映射
<bag name="Data" mutable="true" >
<key>
<column name="Log_Link" />
<column name="channel" />
</key>
<one-to-many class="Fluent.Entities.Meters.FTIMeterChannelData, Poco" entity-name="30" />
</bag>
and
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" default-access="property" auto-import="true" default-cascade="none" default-lazy="true">
<class xmlns="urn:nhibernate-mapping-2.2" mutable="true" name="Fluent.Entities.Meters.FTIMeterChannelData, Poco" table="loggerData" entity-name="30">
<composite-id mapped="false" unsaved-value="undefined">
<key-property name="Channel" type="System.Int32">
<column name="channel" />
</key-property>
<key-property name="LogLink" type="System.Int32">
<column name="Log_Link" />
</key-property>
</composite-id>
<property name="Date" type="System.DateTime">
<column name="hhdate" />
</property>
</class>
<class xmlns="urn:nhibernate-mapping-2.2" mutable="true" name="Fluent.Entities.Meters.FTIMeterChannelData, Poco" table="loggerData10" entity-name="15">
<composite-id mapped="false" unsaved-value="undefined">
<key-property name="Channel" type="System.Int32">
<column name="channel" />
</key-property>
<key-property name="LogLink" type="System.Int32">
<column name="Log_Link" />
</key-property>
</composite-id>
<property name="ReadingType" type="System.Char">
<column name="readingtype" />
</property>
</class>
</hibernate-mapping>
现在正如文章所述,我应该能够使用拦截器更改实体名称
class LoggerDataInterceptor : EmptyInterceptor
{
public override string GetEntityName(object entity)
{
return Convert.ToString("20");
}
}
现在的问题有两个。
首先,尽管在打开会话时声明了该拦截器,但我似乎无法启动该拦截器,其次,我是否完全发疯了,这永远不会起作用吗?
我可以评论第一个问题。打开会话时是否传递拦截器?
config.SetInterceptor(new yourInteceptor());
.........
if (config.Interceptor != null)
{
session = factory.OpenSession(config.Interceptor);
}
else
{
session = factory.OpenSession();
}
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