实现休眠。类+抽象基类

Question

我有以下数据库设置：

我需要一个将其映射到的休眠文件：

• PowerPrognosisUsageSubmission类
• PowerPrognosisWindSubmission类
• PowerPrognosisSubmissionBase抽象基类

虽然，我无处可去。这是我的尝试：

我尝试实现PowerPrognosisUsageSubmission

<?xml version="1.0" encoding="utf-8"?>
<hibernate-mapping namespace="DC.Client.Models.Model" assembly="DC.Client.Models" xmlns="urn:nhibernate-mapping-2.2">
  <class name="PowerPrognosisUsageSubmission" table="PowerPrognosisSubmissionBase" schema="`dbo`" mutable="true" lazy="false">
    <id name="PowerPrognosisSubmissionId" access="property" column="`PowerPrognosisSubmissionBaseID`">
      <generator class="native" />
    </id>
    <property name="Date" column="`Date`" />
    <property name="Hour" column="`Hour`" />
    <property name="Direction" column="`Direction`" />
    <property name="Submission" column="`Submission`" />
    <property name="Basis" column="`Basis`" />
    <many-to-one name="PowerPrognosisUsageArea" class="PowerPrognosisUsageArea" column="`PowerPrognosisAreaBaseID`" not-null="false" lazy="false" />
    <joined-subclass name="PowerPrognosisUsageSubmission" table="PowerPrognosisUsageSubmission">
      <key column="`Usage`" />
    </joined-subclass>
  </class>
</hibernate-mapping>

有什么帮助吗？

Answer 1

我自己解决了

<?xml version="1.0" encoding="utf-8"?>
<hibernate-mapping namespace="DC.Client.Models.Model" assembly="DC.Client.Models" xmlns="urn:nhibernate-mapping-2.2">
  <class name="PowerPrognosisSubmissionBase" table="PowerPrognosisSubmissionBase" schema="`dbo`" mutable="true" lazy="false">
    <id name="PowerPrognosisSubmissionId" access="property" column="`PowerPrognosisSubmissionBaseID`">
      <generator class="native" />
    </id>
    <property name="Date" column="`Date`" />
    <property name="Hour" column="`Hour`" />
    <property name="Direction" column="`Direction`" />
    <property name="Submission" column="`Submission`" />
    <property name="Basis" column="`Basis`" />
    <many-to-one name="PowerPrognosisAreaUsage" class="PowerPrognosisAreaUsage" column="`PowerPrognosisAreaBaseID`" not-null="false" lazy="false" />
    <joined-subclass name="PowerPrognosisSubmissionUsage" table="PowerPrognosisSubmissionUsage">
      <key column="`PowerPrognosisSubmissionBaseID`" />
      <property name="Usage" column="`Usage`" />
    </joined-subclass>
    <joined-subclass name="PowerPrognosisSubmissionWind" table="PowerPrognosisSubmissionWind">
      <key column="`PowerPrognosisSubmissionBaseID`" />
      <property name="PriceAreaEffect" column="`PriceAreaEffect`" />
      <property name="ResponsibleEffect" column="`ResponsibleEffect`" />
      <property name="W2UShare" column="`W2UShare`" />
      <property name="PointCarbonShare" column="`PointCarbonShare`" />
    </joined-subclass>
  </class>
</hibernate-mapping>

Answer 2

我建议你看看 FluentNhibernate，在我看来，它提供了一种更好的方法来将表映射到你的实体类。

另外，您可能想试试这个工具，它能够为您生成 hbm.xml 或 fluentnhibernate 映射文件。

http://nmg.codeplex.com/

Answer 3

也许您应该阅读NHibernate manual。 Chapter 8 有继承的所有细节。