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The moose likes Object Relational Mapping and the fly likes Hibernate Batch with <join> Big Moose Saloon
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JavaRanch » Java Forums » Databases » Object Relational Mapping
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Author

Hibernate Batch with <join>

Vignesh Murali Natarajan
Ranch Hand

Joined: Jul 24, 2006
Posts: 65

Hi,
I'm facing a problem with getting Hibernate to do batch inserts. I have an Entity (called 'Extract') that has a component class which is mapped to a secondary table using <join> element. It also has a <one-to-many> relationship with a different entity. When I try to do a batch insert of Extract objects, Hibernate does not seem to be batching them. So if there were 10000 Extract records to be inserted, Hibernate generates 10000 inserts and runs batch sizes of 1. I have set my batch_size to 50, enabled order_inserts & order_updates. However if I remove the <join> element from the mapping, Hibernate does the batching correctly. Please correct me if my understanding is incorrect

Here are excerpts from my src

hibernate cfg xml


The Extract hbm



The entity classes are just POJOs.

Please help!


ThanQ,
Vignesh Murali N
www.vigneshmurali.com
SCJP(95%), SCWCD(92%), SCBCD(97%), SCDJWS(97%), SCBCD5(100%), OCMJEA
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: Hibernate Batch with <join>