Hibernate default values during runtime - best practice

Hi stackoverflow coders,

I have an app (since the iPhone its really chic to use this word :-)) persisting its data with Hibernate. The database scheme contains several d开发者_Python百科ate fields which can be NULL. I configured Hibernate then to fetch the field value also as NULL.

The customer wants to configure these values in case these are NULL. So I decided to have a Properties file containing the default values so nobody has to alter Annotations or database schemes...

My problem now is that I don't know how to realize that in a cool way. The main object I am working with is called Job and contains some joined tables. I don't want to assign the properties file to the Job object, because it wouldn't be persistent anymore. How can I tell Hibernate during creation - hey, you also need a Properties file in case you find NULL columns?

Currently, the only solution I see is to walk over the complete fetched List and analyze the contents of each Job and set them properly if some fields are NULL.

Apparently, I wondered if there is better way to do that...

Thanks for your help and regards from rainy Bonn, Germany,

Marco

Hibernate have and Events subsystem, you can play with it. There are examples of code doing stuff like you want.