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Hopefully an easy problem with Hibernate

Shak Smith
Greenhorn

Joined: Feb 19, 2010
Posts: 12
Basically what I want to do is the following;
To be able to create an Event with three Speakers .
Speakers table has an event_id column which is NULL and NO Default value(NULL).
The only way I can do the insertions is by setting insert="false" update="false" in the speakers hbm.
I want to be able to update the speaker's event_id after it was inserted. So leaving the update="false" doesn't work for me.
The problem is that if I change the update to "true" then I'm not able to insert Events or Speakers anymore and I get the following error:
Repeated column in mapping for entity: com.manning.hq.ch04.Speaker column: event_id (should be mapped with insert="false" update="false")
How can I achieve that?


<hibernate-mapping package="com.manning.hq.ch04">
<class name="Event" table="events">
<id name="id" column="uid" type="long">
<generator class="native" />
</id>
<property name="name" type="string" />
<set name="speakers" cascade="save">
<key column="event_id" not-null="true" />
<one-to-many class="Speaker" />
</set>
</class>
</hibernate-mapping>

<hibernate-mapping package="com.manning.hq.ch04">
<class name="Speaker" table="speakers">
<id name="id" column="uid" type="long">
<generator class="native" />
</id>
<many-to-one name="event" class="Event" column="event_id" insert="false" update="false"/>
<property name="name" type="string" />
</class>
</hibernate-mapping>

 
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