Still confuses me a little bit atm maybe I have had a long day but how
is it going to help having a version for optimistic locking when I
cannot set the version from a value stored with the GUI, I always
thought this is how you would handle it.
I will research to find a demo, is there any real demos out there
doing what I wan't?
On Wed, Oct 1, 2008 at 9:36 PM, Stefan Sedich <[EMAIL PROTECTED]> wrote:
> Ok got my interceptor working, bit raw convert from the Hibernate one
> I found but does what I wan't it to now, selects the version back from
> the DB and does it correctly how I would like it to, thoughts?
>
> public override bool OnFlushDirty(object entity, object id, object[]
> currentState, object[] previousState, string[] propertyNames,
> NHibernate.Type.IType[] types) {
> ISessionImplementor sessimpl = _session.GetSessionImplementation();
> IEntityPersister persister = sessimpl.GetEntityPersister(entity);
>
> EntityMode mode = _session.GetSessionImplementation().EntityMode;
>
> if(persister.IsVersioned) {
> object version = persister.GetVersion(entity, mode);
> object currentVersion =
> persister.GetCurrentVersion(id, sessimpl);
>
> if (!persister.VersionType.IsEqual(currentVersion, version))
> throw new
> StaleObjectStateException(persister.EntityName, id);
>
> }
>
> return base.OnFlushDirty(entity, id, currentState,
> previousState, propertyNames, types);
> }
>
> On Wed, Oct 1, 2008 at 9:19 PM, Fabio Maulo <[EMAIL PROTECTED]> wrote:
>> 2008/10/1 Stefan Sedich <[EMAIL PROTECTED]>
>>>
>>> So basically passing the version from my UI layer and setting it is
>>> unsupported?
>>
>> No, it is understandable.
>> As ID, version don't have business-meaning so you don't need to pass the
>> version in your DTO because the version have only persistence-meaning. NH
>> manage the version for optimistic-locking. The timestamp work only because
>> it not depend from previous value (NH override any thing you are assigning).
>> If you change the version by yourself you must manage optimistic-locking by
>> yourself.
>>
>>>
>>> Does anyone have any suggestions on how this is achieved?
>>> I am yet to find anything out there.
>>
>> Yes. Don't touch the version and let NH do it for you.
>> The other option is to have 2 "version" properties. One for your business
>> meaning and the other for persistence-meaning (the first read-write the
>> second nosetter).
>> --
>> Fabio Maulo
>>
>> >>
>>
>
>
>
> --
> Stefan Sedich
> Developer
> Microsoft Certified Professional (MCP)
>
--
Stefan Sedich
Developer
Microsoft Certified Professional (MCP)
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