Hi,
Is any one solved the problem of partly field update in ObjectDataSource?

The ObjectDataSource is updating only the visible fields in the attached GridView and therfore when updating the hibernate object, the other fields are null or default values.

is the only way to solve this is to load the object again based on the object key before update and then copy the newly fields to the loaded object just befor the ObjectDataSource is updating the object?

Thanks,
Noam

I've never been able to do it any other way. NH usually sends SQL to update all columns of a mapped entity. In that case, the convenient way to do it with ODS would probably be to use ISession.SaveOrUpdateCopy(), but it will result in a SELECT before doing an UPDATE.

I presume you've already read: http://www.hibernate.org/hib_docs/nhibe ... g-detached

I don't have any experience with it, but it is possible to configure NH to only update the *changed* properties of an entity. They generally don't advise it because it requires more on-the-fly SQL generation that could degrade performance. However, it may be possible to enable that, associate a "default" version of the object with the session (as described in http://www.hibernate.org/hib_docs/nhibe ... pdate-lock), and then perhaps ISession.Update would result in only updating the changed columns.

Again, I haven't tried it, but would be interested to know whether it would work.

Thanks for the info, it sometimes good to know you dont have a solution atlist i can stop searching :).

do you know if any other ORM solved the problem?

Thanks,
Noam