Just a quick question.

I'm reading Hibernate in Action and in section 4.4.6 (p. 148), the following statement is made:



I am just curious whether this is still true in 3.0.5.

By the way, guys, Hibernate is an incredible product.

You can declare as many collections as you want for fetching using outer join now, but you have to be aware that it will result in cartesian product behaviour, which is almost certainly not what you want.

Indeed, it isn't, and I doubt I will often use eager fetching. I was simply interested for curiousity's sake. Thanks for the quick reply.

It is actually useful to be able to do stuff like:




This case does not create a cartesian product.

I'm risking asking a stupid question, here, since I didn't look this up before posting, but...



Won't HQL ignore the mappings in this case anyway? That is, even if I map the relationships between Customer, Order, and LineItem as lazy, won't your query still result in an outer join, rather than several sequential SELECTs?

Sorry if that's in the docs, and I haven't looked it up (*sheepish grin*)

Sure, of course. But it was not clear from your question that you were talking about *mapping level* join fetching.

Ah, indeed... I had not really made the distinction in my mind yet. Thanks for all the help.