Hibernate: delete many-to-many association
- by Bar
I have two tables with the many-to-many association.
— DB fragment:
loads
Id
Name
sessions
Id
Date
sessionsloads
LoadId
SessionId
— Hibernate mapping fragments:
/* loads.hbm.xml */
<set name="sessions" table="sessionsloads" inverse="true">
<key column="LoadId" />
<many-to-many column="SessionId" class="Session" />
</set>
…
/* sessions.hbm.xml */
<set name="loads" table="sessionsloads">
<key column="SessionId" />
<many-to-many column="LoadId" class="Load" />
</set>
In order to remove one entry from the association table sessionsloads, I execute this code:
Session session = sessionDao.getObject(sessionId);
Load load = loadDao.getObject(loadId);
load.getSessions().remove(session);
loadDao.saveObject(load);
But, after launching, this code change nothing.
What's the right way to remove an association?
