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Solution for HibernateException due to Missing ‘hibernate.dialect’
HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' is not set?In our latest blog post, we share a detailed solution to this common problem! The Error and Its Cause
When working with Hibernate, it’s not uncommon to encounter errors that initially seem inexplicable. One such error is the HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' is not set. This error can be frustrating, especially when you believe all configurations are correct. In this post, I would like to share my experience with this specific issue and how I resolved it.
The Solution for HibernateException
After some research and debugging, I found the solution. The missing piece in the official documentation was that the configuration properties must be applied to the StandardServiceRegistryBuilder. I accordingly modified the helper class SessionFactoryUtil. The call to StandardServiceRegistryBuilder().applySettings is crucial, where the configuration properties are passed.
package com.journaldev.hibernate.util;
import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
public class SessionFactoryUtil {
// ...
private static SessionFactory buildSessionFactory() {
try {
Configuration configuration = new Configuration();
configuration.configure("hibernate.cfg.xml");
// Applying configuration settings
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder()
.applySettings(configuration.getProperties()).build();
SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);
return sessionFactory;
} catch (Throwable ex) {
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
// ...
}
Conclusion
Hibernate is constantly evolving, and each version brings many changes. Unfortunately, the documentation often lags behind. This experience shows how important it is not only to follow the official documentation but also to conduct your own research and debugging to solve problems. I hope this post helps other developers save time in debugging and efficiently solve similar issues.
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