I have followed the code given in Chapter 4, Section Generated and default property values, to get generated value for lastModified property.
But it is not working with Oracle 9i.

Do you have a working example? Please check my posting here.

http://forum.hibernate.org/viewtopic.php?t=986972

Also can you explain me, how a refresh (executing a SELECT statement after INSERT of entity) gets generated value for the property 'lastModified'. What should the DDL of this entity look like. Who actually inserts the updated value into this property - hibernate code or Database.

If it database, does hibernate adds a default value to the property in DDL.

I have a feeling that hibernate code is not property tested in all areas. I found that there is a fix for generated property for components, in latest version 3.2.6 ga.

http://opensource.atlassian.com/project ... e/HHH-1471

But still this fix is also not working.

Hi, I think you are misinterpreting what is said in the doc (as I first did): it is not Hibernate that is generating those values but some database trigger! Hibernate is only respecting what the database does and will reload from db after insert/update to get the db generated value.

Carlo

Carol, how to create that some database trigger from hibernate mappings.

Thanks
Shyam
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Sorry, as far as I know this is not possible. You have to do it directly on your database - have a look into your database docs.

With the Hibernate annotations you are only telling Hibernate that there will be database generated values (at INSERT or at UPDATE time), that Hibernate must read to have consistent Java objects!