Hibernate documentation states the following for a property (5.1.11): "(10) optimistic-lock (optional - defaults to true): Specifies that updates to this property do or do not require acquisition of the optimistic lock. In other words, determines if a version increment should occur when this property is dirty. "
However, none of the doucmentation that I could find discusses the difference between flushing the session and explicitly calling Save (). Even if I save an object without making any changes to it, the version property gets incremeted. Jean On Jan 6, 10:43 am, "Fabio Maulo" <[email protected]> wrote: > NHiA is based on NH1.2 (very old version at this point) and is strange that > I don't know that feature.I'll review the H3.3.0 code to check if that is a > real feature supported by Hibernate. > > 2009/1/6 j gwood <[email protected]> > > > > > > > > > Thank you for the explanation on version versus optimistic-lock. The > > following text from the NHibernate In Action book led me to believe > > that you could disable the version increment using the optimistic-lock > > attribute (page 129 of Kuate_NHibernate_MEAP_0804.pdf): > > > "It is possible to disable the increment of the version when a > > specific property is dirty. To do so, you must add optimistic- > > lock="false" to this property's mapping. This feature is available > > for properties, components and collections (the owning entity's > > version is not incremented). " > > > The book does not mention the difference between session.save() and > > flushing the session with transaction.commit(). > > > My company requires the functionality to save an object without having > > the version incremented when certain properties are modified. > > > Jean > > > On Jan 6, 9:53 am, "Fabio Maulo" <[email protected]> wrote: > > > The version is the version. The optimistic-lock strategy is > > > the optimistic-lock strategy.If you are working with Version, each > > operation > > > with a persistence instance mean change its state that mean change its > > > version. > > > > The optimistic-lock have place when an instance is flushed to DB. If you > > > don't set the FlushMode explicit its value is FlushMode.Auto that mean, > > at > > > least, that you are flushing the nh-session (that is the UoW) at > > > transaction-commit. > > > > 2009/1/6 j gwood <[email protected]> > > > > > Is there any way to have the Version property NOT incremented on > > > > Session.SaveOrUpdate() or Session.Update() when using optimistic- > > > > lock="false"? I am using setting optimisitic-lock to false in my > > > > mapping file; however, NHibernate seems to be ignoring the optimistic- > > > > lock attribute setting. Is there some other property that needs to be > > > > set on my component or list? > > > > > We are encapsulating NHibernate in our Persistence layer and using > > > > Spring.NET to help manage transactions, so we are not exposing > > > > ISession. The optimistic-lock attribute works when you don't call > > > > Session.SaveOrUpdate and when you simply commit a transaction: > > > > > s = OpenSession(); > > > > t = s.BeginTransaction(); > > > > gavin = (Person) s.CreateCriteria(typeof(Person)).UniqueResult > > > > (); > > > > new Task("Document", gavin); > > > > t.Commit(); > > > > s.Close(); > > > > > My current mapping file as the following attributes set: > > > > > <class name="Parent" table="Parent" schema="Simple" proxy="IParent" > > > > optimistic-lock="version"> > > > > <id name="Id" column="Id" type="Guid"> > > > > <generator class="assigned"/> > > > > </id> > > > > <version name="Version" column="`Version`" type="Int32" unsaved- > > > > value="0"/> > > > > <property name="Name" column="`Name`" type="string" length="50" > > > > optimistic-lock="false" /> > > > > <list name="ChildrenInjector" inverse="true" generic="true" > > > > cascade="all-delete-orphan" batch-size="10" optimistic-lock="false"> > > > > <key column="ParentId"/> > > > > <index column="SiblingIndex" type="Int32"/> > > > > <one-to-many class="Child"/> > > > > </list> > > > > </class> > > > > > Any suggestions are greatly appreciated, > > > > > Jean > > > > -- > > > Fabio Maulo- Hide quoted text - > > > > - Show quoted text - > > -- > Fabio Maulo- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nhusers?hl=en -~----------~----~----~----~------~----~------~--~---
