[jboss-user] [EJB 3.0] - Clean complete database

hamtho2 do-not-reply at jboss.com
Tue Sep 25 09:44:57 EDT 2007


is there a good way to clean the whole database through hibernate?

The background is as follows: I want to clean the database every time before starting a new testcase, to make sure the database is empty and in a defined state. Currently I´m doing this through dropping the scheme and restarting the session, but this takes very long. Therefor a CREATE-DROP in the persistence manager would not be very suitable as well, as I want to prevent hibernate from doing the mapping everytime.

I tried doing it through the Hibernate Criteria-API, fetching all java.lang.Objects and performing a session.delete(object) on every object, but this leads to a not-null or transient object exception, although I did it in one transaction with setting the flushMode to "commit".
The other way I tried was doing this through HQL, but this leads to the problem, that I´m working with @CollectionOfElements which I cannot reference through hql (or at least I haven´t found a way to do it), but the HQL does explicitly no cascades.

Any help would be greatly appriciated.


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