Greetings!

I am reading the 'Hibernate in Action' book. I found interesting that the book claims that any integer type (int, long, Integer, Long) is suitable for an indentity. Most of the exaples are using Long and I am curious is there any special reason for that (performance, serialization concerns, etc.).

Your help will be apreciated.

Thanks

Hi,

I believe that at the db-level, perf experts tend to recommend for the smallest integer type available, so as to take up the least space. However, that argument wouldn't make much sense at object-level. I don't see any reason why there should be any difference in performace as well. I think it is more of a convention.

I haven' t yet looked in to the hibernate code related to this, but I guess internally they would be using Long type universally.

Then again, that's just my 2 cents. ;-)