you have also hilo. You can read about it on the documents in this list. I think it is a Steve Ambler articles that Fabio posted.
Gustavo. On Mon, Nov 24, 2008 at 9:11 AM, karron <[EMAIL PROTECTED]> wrote: > > I'm wondering which algorithm is recommend? As you said, identity is > not so good. The remains are only Guid related algorithm. Oracle > doesn't support guid data type, so may we choose uuid.hex? and choose > guid.comb when the database is ms sql? > > On Mon, Nov 24, 2008 at 4:26 AM, Steve Wagner <[EMAIL PROTECTED]> wrote: > > > > I think this text would be very helpful when it would be inserted as > > warning to the NH documentation. > > > > Fabio Maulo schrieb: > >> Hi Jon.Do you have some write where somebody explain why identity is so > good > >> ? > >> > >> Using ORM identity is not recommended because the only way to know the > ID of > >> the entity is writing the entity itself in a safe state and hopefully > inside > >> a transaction and, after the INSERT INTO, read, in some way, the result > to > >> know the ID. > >> There are various other reasons... for example try a migration. > >> Take a look here > >> > http://nhusers.googlegroups.com/web/WhitePaper_Mapping_Objects_To_Relational_Databases.pdf > >> > >> Please if you find something where somebody explain why identity is so > good > >> instead a simple int, let me know. > >> > >> 2008/11/7 Jon Palmer <[EMAIL PROTECTED]> > >> > >>> I've seen this comment before but never found a good explanation of > why > >>> identity is not recommended. Is there a good write up of the problem > and > >>> what the various solutions are? > >>> > >>> > >>> > >>> Thanks > >>> > >>> Jon > >>> > >>> > >>> > >>> *From:* [email protected] [mailto:[EMAIL PROTECTED] *On > >>> Behalf Of *Fabio Maulo > >>> *Sent:* Friday, November 07, 2008 8:28 AM > >>> *To:* [email protected] > >>> *Subject:* [nhusers] Re: Second Level Cache on Insert > >>> > >>> > >>> > >>> 2008/11/7 Ayende Rahien <[EMAIL PROTECTED]> > >>> > >>> And, in general, it is not recommended to use identity for other > reasons. > >>> > >>> usage of batching is one good reason > >>> > >>> > >>> > >>> It is an hard and heavy battle to fight. > >>> > >>> > >>> > >>> -- > >>> Fabio Maulo > >>> > >>> > >> > >> > > > > > > > > > > > -- > Regards, > Karron > > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
