Nhibernate/hibernate避免在联接表或视图中插入 [英] Nhibernate/hibernate Avoid Insert in joined table or view

问题描述

我必须加入一个具有视图的实体才能将一些数据检索到属性中

I have to join a entity with a view to retrieve some data into properties

<join table="XXVIEW" optional="true">
      <key column="ID_ENT" />
      <property name="Prop1" insert ="false" update ="false" />
      <property name="Prop2" insert ="false" update ="false" />
      <property name="Prop3" insert ="false" update ="false" />          
</join>

但是当我尝试保存(插入)时失败，因为它尝试在具有ID_Ent的XXVIEW中插入一条记录

But when i try to save (insert) it fails becouse it try to insert a record in XXVIEW with ID_Ent

我需要在这个实体中具有一些属性，这些属性是通过各种计算或联接获得的，并且必须具有单个属性，而不是像组件这样的对象属性.

I need to have some properties in this entity get from various calculations or joins and to have as single properties non in a object property like a component.

我可以跳过此插入吗???还是可以用其他方式映射此属性?

Can i skip this insert ??? or can i map this properties in other way?

此属性在连接的子类中. TIA 亚行

This properties is in a joined subclass. TIA Adb

推荐答案

与其将其标记为可选，还可以尝试将其标记为反向

Instead of marking it as optional you can try mark it as inverse http://nhibernate.info/doc/nh/en/index.html#mapping-declaration-join

反之(可选-默认为 false):如果启用，则Hibernate将不会 尝试插入或更新属性 由该联接定义.

inverse (optional - defaults to false): If enabled, Hibernate will not try to insert or update the properties defined by this join.

<join table="XXVIEW" inverse="true">

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