Spring DataSource with embedded HSQL in memory database and hibernate create-drop ordering on Linux - linux

Question

I am using Spring 3.1 with annotations to create a DataSource that uses embedded HSQL.
#Bean
public DataSource dataSource() throws Exception {
EmbeddedDatabaseFactoryBean bean = new EmbeddedDatabaseFactoryBean();
bean.setDatabaseType(EmbeddedDatabaseType.HSQL);
bean.afterPropertiesSet();
DataSource object = bean.getObject();
return object;
}
I am also configuring a SessionFactory like this
#Bean
public SessionFactory sessionFactory() {
SessionFactory sessionFactory = new LocalSessionFactoryBuilder(dataSource)
.setNamingStrategy(namingStrategy())
.addProperties(hibernateProperties)
.addAnnotatedClass(Some.class)
.buildSessionFactory();
logger.info("Created session factory: " + sessionFactory + " with dataSource: " + dataSource);
return sessionFactory;
}
The problem is if I create some other beans using #Component in which I populate the database, the SQL script fails because the database has not been created. My hibernate.properties includes the following line to generate DDL
properties.put("hibernate.hbm2ddl.auto", "create-drop");
So it is some sort of ordering issue with bean creating. However this problem only occurs in Linux (Kubuntu 12.04) and not on Windows 7!

Answer 1

I have worked out that in my #Component bean which populates the database I had to add the #DependsOn annotation like this
#Component
#DependsOn({"dataSource", "sessionFactory"})
public class DevSqlPopulator {
...
}

Answer 2

I think the issue is that you are calling a InitializingBean method afterPropertiesSet method yourself instead of letting Spring call it once all the properties are cleanly set. Try doing this instead:
#Bean
public EmbeddedDatabaseFactoryBean dataSource() throws Exception {
EmbeddedDatabaseFactoryBean bean = new EmbeddedDatabaseFactoryBean();
bean.setDatabaseType(EmbeddedDatabaseType.HSQL);
return bean;
}
Now it is a clean factory bean and Spring will take care of the rest of the lifecycle.