ManyToOne and lazy loading (again?)

TobiasX · **Joined:** Fri Jul 25, 2008 6:26 am **Posts:** 3

Hibernate version:
3.2.6 GA

Hi,

i have 3 Entities:

Person: has many Documents (OneToMany)
Document: has one DBFile (ManyToOne)
DBFile: contains the filecontent and such

Everytime when i access Person#getDocuments() the associated DBFile is also retrieved which leads to an OutOfMemoryException after a short time ...

How can i prevent this? (which annotations do i have to set where?)

I found http://www.hibernate.org/162.html but setting
@ManyToOne(optional=false) on Document#getDBFile() didn't help.

On Jira i found some issues which have all been rejected with comment "read the documenatation" - very patronizing ... at least they could give a link to the right place

Cameron McKenzie · **Posted:** Fri Jul 25, 2008 9:45 am

Out of memory means just that. Is this a huge object graph?

Make sure the associated entities are loaded in a lazy manner, that's for sure.

TobiasX · **Joined:** Fri Jul 25, 2008 6:26 am **Posts:** 3

Cameron McKenzie wrote:

Out of memory means just that. Is this a huge object graph?

i load one person with about 8 documents. the oome comes because of the blob with the filecontent inside DBFile which is serveral megabytes.

Cameron McKenzie wrote:

Make sure the associated entities are loaded in a lazy manner, that's for sure.

thats what i'm trying and where i stuck. Document#getDBFile() wont get loaded lazy ...

TobiasX · **Joined:** Fri Jul 25, 2008 6:26 am **Posts:** 3

We found the bug. We called Document#getDBFile() inside Document#hashCode() and triggered the DBFile to be loaded.