I have a situation where I don't want the Version property updated or
incremented on a Parent entity if anyone adds a Child entity to the
Parent's Children collection. I have the Parent's Children collection
property mapped with optimistic-lock="false" so that the
Parent.Version property stays the same if someone adds a Child entity
(Parent.Children.Add(child)) and saves the Parent entity (this assumes
that no modifications were made to any other properties of the Parent
entity).
However, whenever I save the Parent entity after adding a Child, the
Parent.Version value is incremented. Is this the expected behaviour
of NHibernate?
I noticed that the unit test, CollectionNoVersion() in
NHibernate.Test.VersionTest.VersionFixture, which tests the optimistic-
lock="false" feature on a collection property does not call
SaveOrUpdate() or Update(). Instead, the method simply commits the
transaction and closes the session as follows:
s = OpenSession();
t = s.BeginTransaction();
gavin = (Person) s.CreateCriteria(typeof(Person)).UniqueResult();
new Task("Document", gavin);
t.Commit();
s.Close();
Assert.AreEqual(1, gavin.Version);
Assert.IsFalse(NHibernateUtil.IsInitialized(gavin.Tasks));
<class name="Person">
<id name="Name">
<generator class="assigned" />
</id>
<version name="Version"/>
<bag name="Tasks"
inverse="true"
cascade="all-delete-orphan"
optimistic-lock="false">
<key column="person"/>
<one-to-many class="Task"/>
</bag>
</class>
I am using Spring.NET to manage transactions in our applications as
the majority of our existing code outside of the persistence layer
uses System.Transactions.TransactionScope. Spring.NET does a good job
of managing NHibernate's ITransaction and Microsoft's TransactionScope
class for us, so that we don't have to expose NHibernate outside of
the persistence layer.
Any advice is greatly appreciated.
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