我知道当数据库中映射组件的所有属性都为空时,NHibernate 会将组件设置为空。但是,在以下情况下,如果多对一项目LevelOfInvolvement为空,则该组件被设置为空,尽管该组件的所有其他属性都不为空。
无论其他字段的值如何,更改数据库中LevelOfInvolvement列的值都会导致组件为空或不为空。
这是完整的映射:
<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
<class name="NHS.WebTeam.LPTInvolvementHub.Activity, NHS.WebTeam.LPTInvolvementHub" table="[Activity]" lazy="false" optimistic-lock="version" where="Deleted=0" >
<id name="ID" type="Int32" column="ID" unsaved-value="0">
<generator class="hilo">
<param name="table">NHibernateHiLo</param>
<param name="column">NextValue</param>
<param name="max_lo">100</param>
</generator>
</id>
<version name="Version"/>
<property name="Deleted" />
<property name="LastUpdateBy" />
<property name="LastUpdateDate" />
<many-to-one name="Service" column="ServiceID"></many-to-one>
<property name="Title"></property>
<property name="Abstract"></property>
<property name="ProposedDate"></property>
<property name="DueDate"></property>
<property name="ActualDate"></property>
<property name="Rationale"></property>
<many-to-one name="PreAssessment" column="PreAssessmentID"></many-to-one>
<many-to-one name="PostAssessment" column="PostAssessmentID"></many-to-one>
<component name="InvolvementChecklist">
<property name="Impact" column="InvolvementChecklist_Impact"></property>
<property name="RewardsAndRecognition" column="InvolvementChecklist_RewardsAndRecognition"></property>
<property name="Training" column="InvolvementChecklist_Training"></property>
<property name="LogisticalIssues" column="InvolvementChecklist_LogisticalIssues"></property>
<property name="Feedback" column="InvolvementChecklist_Feedback"></property>
<property name="DueRegard" column="InvolvementChecklist_DueRegard"></property>
<property name="SupportRequiredFromTheTeam" column="InvolvementChecklist_SupportRequiredFromTheTeam"></property>
<property name="QualityAssurance" column="InvolvementChecklist_QualityAssurance"></property>
<property name="NonComplianceReason" column="InvolvementChecklist_NonComplianceReason"></property>
<many-to-one name="LevelOfInvolvement" column="InvolvementChecklist_LevelOfInvolvementID"></many-to-one>
</component>
</class>
</hibernate-mapping>
加载实体的代码很简单:
entity = NHibernateSession.Load(persitentType, id);
我正在使用 NHibernate 版本 3.3.1
这似乎是一个相对简单的映射,但我找不到其他有类似问题的参考。