Hibernate ID Generator

Question

Anyone know of some good tutorials on how to create a custom ID generator for hibernate?

Answer 1

A cursory search of Google for 'hibernate custom id generator tutorial' turned up the following possibilities. I've excluded those that don't look useful and summarized the content of each.

• http://www.devx.com/Java/Article/30396 - covers the issues of generating an ID before the data is persisted (and hence does not yet have a business key).
• http://docs.jboss.org/hibernate/core/3.6/reference/en-US/html_single/#mapping-declaration - the whole document is very useful but not so much a tutorial as reference. Ideal when looking at the other tutorials.
• http://www.javaworld.com/javaworld/jw-08-2008/jw-08-hibernate-annotations.html shows how to use annotations to set up your schema (including auto-generated values).

Hope that helps.

Answer 2

http://resource.visual-paradigm.com/vpsuite2.3sp1/custom_id_generator.html

Though this link demonstrates Visual-Paradigm tool for generating Custom ID generator, but the idea of Hibernate Custom ID generator can be learnt from the same

Answer 3

I found this one by Jiaqi Guo:

http://blog.cyclopsgroup.org/2007/04/custom-idgenerator-for-jpa-gap-between.html