3.0.0M3: How to configure JPA EntityManagerFactory ?

[Juergen.Zimmermann]

So far I figured out the following config methods. However, I've no idea how to obtain an EntityManagerFactory using the annotations provided in 3.0.0M3. Any hint is appreciated!


@Bean(destroyMethod="close")
public DataSource dataSource() {
BasicDataSource ds = new BasicDataSource();
ds.setDriverClassName(...);
ds.setUrl(...);
ds.setUsername(...);
ds.setPassword(...);
ds.setMaxActive(...);
ds.setMinIdle(...);
return ds;
}
@Bean
public JpaVendorAdapter jpaVendorAdapter() {
return new HibernateJpaVendorAdapter();
}
@Bean
public LoadTimeWeaver loadTimeWeaver() {
return new InstrumentationLoadTimeWeaver();
}
@Bean
public EntityManagerFactory entityManagerFactory() {
LocalContainerEntityManagerFactoryBean emfBean = new LocalContainerEntityManagerFactoryBean();
emfBean.setDataSource(dataSource());
emfBean.setJpaVendorAdapter(jpaVendorAdapter());
emfBean.setLoadTimeWeaver(loadTimeWeaver());
EntityManagerFactory emf = ??? // How do I proceed ???
return emf;
}
@Bean
public PlatformTransactionManager transactionManager() {
return new JpaTransactionManager(entityManagerFactory());
}

[Juergen.Zimmermann]

With the help of org.springframework.config.java.support.Configurat ionSupport I implemented the following (and it works):


@Configuration
public class SpringConfig implements BeanFactoryAware, ApplicationContextAware {
...
private AutowireCapableBeanFactory autowireCapableBeanFactory;
private ApplicationContext applicationContext;
...
@Bean
public EntityManagerFactory entityManagerFactory() {
LocalContainerEntityManagerFactoryBean emfBean = new LocalContainerEntityManagerFactoryBean();
emfBean.setDataSource(dataSource());
emfBean.setJpaVendorAdapter(jpaVendorAdapter());
emfBean.setLoadTimeWeaver(loadTimeWeaver());

return getConfigured(emfBean).getObject();
}

@Bean
public PlatformTransactionManager transactionManager() {
return new JpaTransactionManager(entityManagerFactory());
}


@Override // BeanFactoryAware
public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
if (beanFactory instanceof AutowireCapableBeanFactory) {
autowireCapableBeanFactory = (AutowireCapableBeanFactory) beanFactory;
}
}


@Override // ApplicationContextAware
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
this.applicationContext = applicationContext;
}

private <T> T getConfigured(T object) {
if (autowireCapableBeanFactory == null)
throw new IllegalStateException("LocalContainerEntityManager FactoryBean not configurable");

@SuppressWarnings("unchecked")
T configuredObject = (T) autowireCapableBeanFactory.initializeBean(object, null);

if (applicationContext != null) {
if (configuredObject instanceof ResourceLoaderAware) {
((ResourceLoaderAware) configuredObject).setResourceLoader(applicationCon text);
}
if (configuredObject instanceof ApplicationContextAware) {
((ApplicationContextAware) configuredObject).setApplicationContext(applicatio nContext);
}
}

return configuredObject;
}
}

[springin2action]

I have a similar issue but use (unsuccessfully) the createNativeEntityManagerFactory() method. It seems that this should work since it is the only method to get at the entitymanager factory.

Was this how you left it and is this what Spring expects?

[Juergen.Zimmermann]

I'm still using the code above.

[springin2action]

I think if you call afterPropertiesSet() you can call use the exposed entitymanager. I need to check on the 3.0.1 snapshot (JPA bug is fixed there) when it is I will update here so you know.

I am also going to log a jira to update docs so others will know this