Schema export with hibernate annotations

Question

I\'m using hibernate annotations and i want to export my database schema.

Similar to the schemaexporttask with hbm xml files.

Answer 1

In case someone is interested how to do this with JPA+Spring from a unit test (you can generate the sql running the unit test from inside Eclipse like a breeze):

ExportDatabaseSchema.java:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
@TransactionConfiguration(defaultRollback=true)
public class ExportDatabaseSchema {

  @Resource(name="&entityManagerFactory")
  private LocalContainerEntityManagerFactoryBean entityManagerFactory;

  @Test
  public void exportDatabaseSchema(){
    PersistenceUnitInfo persistenceUnitInfo = entityManagerFactory.getPersistenceUnitInfo();
    Map jpaPropertyMap = entityManagerFactory.getJpaPropertyMap();

    Configuration configuration = new Ejb3Configuration().configure( persistenceUnitInfo, jpaPropertyMap ).getHibernateConfiguration();

    SchemaExport schema = new SchemaExport(configuration);
    schema.setOutputFile("resources/sql/schema.sql");
    schema.create(false, false);
  }
}

You need an ExportDatabaseSchema-context.xml:

The applicationContext-jpa.xml contains the annotation configured entityManagerFactory bean. The trick is to inject it with & like this: "&entityManagerFactory", to dereference the spring generated proxy.