I'd like to run Configuration.generateSchemaUpdateScriptList(). However Hibernate is configured using LocalContainerEntityManagerFactoryBean. How do I get to the Configuration object from a LocalContainerEntityManagerFactoryBean instance? Or is there a better way to achieve this?
1 Answer
OK this was a two-days wall vs. head marathon, but in the end I found a solution, although it's somewhat hacky.
I cam across Hibernate's Integrator, which is scarcely mentioned in the docs. Some more information about it can be found in the linked Hibernate JIRA issues HHH-5562 and HHH-6081. However, one can piece together enough information for a working example from a few sources once you know the keyword. Still it does not play well with Spring, a problem mentioned in this SO question.
So, the final solution was a bit hackish, but it works:
public class GetConfigIntegrator implements Integrator { private static Configuration configuration; public static Configuration getConfiguration() { return configuration; } @Override public void integrate(Configuration configuration, /* ... */) { GetConfigIntegrator.configuration = configuration; } // Empty Integrator implementation... } As can be seen, this silly integrator simply stores the configuration in a static variable, so it can be accessed later. Not ideal, but faced with no options one rejoices finding such a path.
To register the integrator, the following file needs to be created, with one line per integrator class (full name), like so:
# src/main/resources/META-INF/services/org.hibernate.integrator.spi.Integrator: <full package name>.GetConfigIntegrator 
Configuration.generateSchemaUpdateScriptList()?