A quick question regarding mapping collections as <list>. Here was the
mapping file I used in my tests:
<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
assembly="NHibernate.Test"
namespace="NHibernate.Test.NHSpecificTest.NH1234"
default-access="field.camelcase"
default-lazy="false">
<class name="Parent" table="parent">
<id name="Id" column="parentId">
<generator class="assigned" />
</id>
<property name="Descript" column="descript" />
<list name="Children" table="child" cascade="all" inverse="true">
<key column="parentId"/>
<index column="position"/>
<one-to-many class="Child"/>
</list>
</class>
<class name="Child" table="child">
<id name="Id" column="childId">
<generator class="assigned" />
</id>
<property name="Descript" column="descript" />
<many-to-one name="Parent" class="Parent" column="parentId"
not-null="true" />
</class>
</hibernate-mapping>
In my testing, I found that if I use the mapping file as listed here, I get
HibernateException errors (“null index column for collection …”) related to
the list mapping, but if I remove inverse=”true” it works fine. I had set
inverse=true because in my actual project, the child class has and needs a
reference to the parent class.
I’ve worked around it, but just wondering: is there any reason I don’t see
why I can’t use inverse=”true”?
Regards,
Remi.
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