Hi-

I have a situation modeling situation as follows:


Store(1)->Product(*)

Component(1)->Product(*)


So in both cases, I have a one-to-many relationship mapped from the parent to the Product (bidirectional).

This works fine, when I retrieve the collection of Products from one Parent, the SQL that gets generated seems to get not only the child obects, but also the other parent objects of those children.


In other words, if i first retreive a child object which contains a Many-to-one mapping back to its parent, the parent seems to be auto-retreived also.

The issue is that if you have multiple hierarchy levels, and you begin by retreiving the lowest level, the entire chain seems to be retreived.

Is this expected behavior? Is there a way to make many-to-one relationship lazy?

Thanks,
Brandon

yes, I asked about that once, take a look in this post:
http://forum.hibernate.org/viewtopic.php?t=924851

Brandon,

This is indeed the default behaviour.

There are multip[/b]le ways of tweaking this.
The way we do it is by specifying a proxy for the parent class. (In .hbm.xml specify in the class-tag proxy="the.package.for.this.class.ClassName" - If you're using xdoclet it's @hibernate.proxy="again.a.long.text.about.package.and.ClassName")

Also look at the docs in section "11.1. Proxies for Lazy Initialization".

I believe there are other ways of tweaking this as well.. But I don't know the details, and a quick scan in the docs didn't reveal anything..

Kind regards,

Dimitry D'hondt

thanks for the response...i'm going to use proxies, as that seems to be the way others are addressing it as well.

Brandon