Dialect « Key « JPA Q&A

1. net.sf.hibernate.MappingException: Dialect does not support identity key generation coderanch.com

Hi, Does anyone know why this exception would be thrown... net.sf.hibernate.MappingException: Dialect does not support identity key generation at net.sf.hibernate.dialect.Dialect.getIdentitySelectString(Dialect.java:297) at net.sf.hibernate.persister.AbstractEntityPersister.(AbstractEntityPersister.java:647) at net.sf.hibernate.persister.EntityPersister.(EntityPersister.java:692) at net.sf.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:42) at net.sf.hibernate.impl.SessionFactoryImpl.(SessionFactoryImpl.java:137) at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:796) at com.hfa.j2ee.util.ServiceLocator.getHBSessionFactory(Unknown Source) at com.hfa.j2ee.util.ServiceLocator.getHBSession(Unknown Source) This exception is not being thrown from my code. I am calling an API and that stupid API is throwing this exception. So I really ...

2. Dialect does not support identity key generation forum.hibernate.org

I'm beginner with Hibernate and I tried to execute an example I found on http://blog.ideoplex.com/software/2003/07/09.html#a365. But, I have every time the same error: Code: Exception in thread "main" net.sf.hibernate.MappingException: Dialect does not support identity key generation at net.sf.hibernate.dialect.Dialect.getIdentitySelectString(Dialect.java:289) at net.sf.hibernate.persister.AbstractEntityPersister.(AbstractEntityPersister.java:633) ...

3. Dialect does not support identity key generation forum.hibernate.org

Code: increment generates identifiers of type long, short or int that are unique only when no other process is inserting data into the same table. Do not use in a cluster. identity supports identity columns in DB2, MySQL, MS SQL Server, Sybase and HypersonicSQL. The returned identifier is of type long, short or int. sequence uses a sequence in DB2, PostgreSQL, ...