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Justinson
 Post subject: DDL generation using JPA with Derby: unique constraints
PostPosted: Mon Nov 23, 2009 4:54 pm 
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Joined: Mon Nov 23, 2009 3:47 pm
Posts: 4
It looks like Hibernate 3 tools for DDL schema generation (hbm2ddl) do not fully support Derby when a JPA model is used. Is it the case?

@UniqueConstraint applied to a @Table is ignored completely in the resulting DDL when DerbyDialect is used. On the other hand, using for example MySQL dialect does create unique clauses in the table declaration for the same JPA model.

Derby is listed as "tested with and is believed to be compatible" with Hibernate.
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