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The moose likes EJB and other Java EE Technologies and the fly likes persistence.xml create tables only when needed Big Moose Saloon
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persistence.xml create tables only when needed

Yan Zhou
Ranch Hand

Joined: Sep 02, 2003
Posts: 137
Hi,

with persistence.xml specifying table creation strategy, I can have the tables automatically created when deployed.

However, I noticed that when I redeploy the app., it still tries to recreate the table because of the table creation strategy is "create". Should not it be smart enough to know that the tables already exist?

I sure can set the strategy to "None" to avoid creation, but that means I have to change the descriptor file after initial deployment, is there a better solution?


Thanks,
Yan
Edvins Reisons
Ranch Hand

Joined: Dec 11, 2006
Posts: 364
This behavior is controlled by Persistence Provider-specific properties.

For example, for Hibernate you can specify a property

[ December 21, 2006: Message edited by: Edvins Reisons ]
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: persistence.xml create tables only when needed