Hi,
I'm trying to set up a one-to-many relationship and am failing to get it to
work correctly.
I have a table 'ParentEntity' that can point to one or more 'ChildEntity'
records.
-- parent entity mapping --
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
assembly="DataAccessLibrary" namespace="DataAccessLibrary.Core">
<class name="ParentEntity">
<id name="Id">
<generator class="increment"/>
</id>
<list name="Children">
<key column="ParentEntityId" />
<index column="ChildIndex"/>
<one-to-many class ="ChildEntity"/>
</list>
</class>
</hibernate-mapping>
-- child entity mapping --
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
assembly="DataAccessLibrary" namespace="DataAccessLibrary.Core">
<class name="ChildEntity">
<id name="Id">
<generator class="increment"/>
</id>
<property name="Child" not-null="true"/>
</class>
</hibernate-mapping>
The first parent entry links to a child entity, however, when a second
parent entity the first record loses its child.
This is giving me the error '*No row with the given identifier
exists[DataAccessLibrary.Core.ChildEntity#1]'*
If I add 'Cascade='add-delete-orphan' to the mapping in parentEntity I get
'A collection with cascade="all-delete-orphan" was no longer referenced by
the owning entity instance:'.
How should I go about specifying the relationship between these tables?
Thanks
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