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Java

Posted by Samuel Zhen
Samuel Zhen
33,571 Points

GenerationType.IDENTITY problem on Hibernate for primary field

I'm facing a problem on auto generate id number for primary field using Hibernate. It does not generate as it should be, it jumps to 32 or 33.

After browsing through community, i found someone who face the same problem and there's a suggestion to use @GeneratedValue(strategy = GenerationType.TABLE).

https://teamtreehouse.com/community/not-sure-what-i-did-wrong-but-the-the-id-of-my-contacts-does-not-generate-the-way-it-should-it-goes-like-1-336597

But this forum said, TABLE is not recommended. I'm not really understand why though.

http://stackoverflow.com/questions/10041938/how-to-choose-the-id-generation-strategy-when-using-hibernate

Any idea how to solve this?

Craig Dennis , Chris Ramacciotti

Thanks

1 Answer

Alexander Nikiforov
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.a{fill-rule:evenodd;}techdegree seal-36
Alexander Nikiforov
Java Web Development Techdegree Graduate 22,175 Points
Alexander Nikiforov
.a{fill-rule:evenodd;}techdegree seal-36
Alexander Nikiforov
Java Web Development Techdegree Graduate 22,175 Points

Check my answer on StackOverflow

TL;DR

When you DON"T close SessionFactory properly and exiting application, then your database is eating out your IDs

add 

sessionFactory.close()

at the end of the Main class