Is it possible to Autowire the JDO PersistenceManager or only the PersistenceManagerFactory?

Question

Is it possible to Autowire the JDO PersistenceManager?

In the example below, only the PersistenceManagerFactory is Autowired, while the PersistenceManager is obtained using a getter and utility method before each operation.

import org.springframework.orm.jdo.PersistenceManagerFactoryUtils;

@Service
public class MainServiceImpl implements MainService
{

    @Autowired
    private PersistenceManagerFactory pmf;

    private PersistenceManager pm;

    public void setPersistenceManager(PersistenceManager pm)
    {
        this.pm = pm;
    }

    public void setPmf(PersistenceManagerFactory pmf)
    {
        this.pmf = pmf;
    }

    public PersistenceManagerFactory getPmf()
    {
        return pmf;
    }

    public PersistenceManager getPersistenceManager()
    {
        return PersistenceManagerFactoryUtils.getPersistenceManager(pmf, true);
    }

}

Answer 1

It doesn't look likely.

If you have a look at the Spring JDO classes overview you'll see the is no FactoryBean that returns a PersistenceManager.

Of course you can easily implement a factory bean yourself that has a dependency of type PersistenceManagerFactory and returns a PersistenceManager.

You may want to internally use the TransactionAwarePersistenceManagerFactoryProxy if you always want to autowire the current thread-bound PersistenceManager (here's an excerpt from the JavaDoc)

Proxy for a target JDO PersistenceManagerFactory, returning the current thread-bound PersistenceManager (the Spring-managed transactional PersistenceManager or the single OpenPersistenceManagerInView PersistenceManager) on getPersistenceManager(), if any.