jQuery in Action, 3rd edition
The moose likes Struts and the fly likes Hibernate Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Frameworks » Struts
Bookmark "Hibernate" Watch "Hibernate" New topic


Nishan Patel
Ranch Hand

Joined: Sep 07, 2008
Posts: 689

Hi All,

Can any one tell me why we use in Hibernate lazy="false" when we use many-to-one , set and other relation with table.

Please help me ASAP


Thanks, Nishan Patel
SCJP 1.5, SCWCD 1.5, OCPJWSD Java Developer,My Blog
Martijn Verburg

Joined: Jun 24, 2003
Posts: 3275

From the Hibernate documentation:

"Alternatively, we could use a non-lazy collection or association, by specifying lazy="false" for the association mapping. However, it is intended that lazy initialization be used for almost all collections and associations. If you define too many non-lazy associations in your object model, Hibernate will end up needing to fetch the entire database into memory in every transaction!"

In short, you don't want to load the entire DB by accident through a chain of associations

Hope that helps!

Cheers, Martijn - Blog,
Twitter, PCGen, Ikasan, My The Well-Grounded Java Developer book!,
My start-up.
Nishan Patel
Ranch Hand

Joined: Sep 07, 2008
Posts: 689

Hi ,

Thank you Martijn Verburg

I get rough idea about why we use lazy="false"

Thanks again
I agree. Here's the link: http://aspose.com/file-tools
subject: Hibernate
It's not a secret anymore!