Creating a post commit when using transaction in Spring

Question

Due to certain reasons i have manually performed transaction commit and roll back using Spring PlatformTransactionManager, what i need to do is setup a hook so that a post commit action takes place after transaction has been committed.

By looking at:

 void commit(TransactionStatus status) throws TransactionException; 

I cant see how i can determine a transaction was successful other than assumming it so if no expception are thrown.

And i could use AOP as one option, but what about programmitcally doing it, maybe using callback method?

Answer 1

You could get exactly what you want by a simpler way, with TransactionSynchronizationManager and TransactionSynchronization

With TransactionSynchronizationManager, you have static methods to get information about current transaction, and you can register a TransactionSynchronization wich allows you to automatically do a post-commit as you call that

TransactionSynchronizationManager.registerSynchronization(new TransactionSynchronization(){            void afterCommit(){                 //do what you want to do after commit            } }) 

Be aware that the TransactionSynchronization is on a per-thread basis (which is often not a problem for a basic web request).

Answer 2

Credit to Grooveek's answer and Alex's comment under it - I put this here because the combined suggestions provide a solid and cleaner solution that is hard to find around the net.

Using Spring 4+. if you need a callback on a @Transactional method after it successfully commits just add that in the beginning of the method:

@Service public class OneService {      @Autowired     OneDao dao;      @Transactional     public void a transactionalMethod() {         TransactionSynchronizationManager.registerSynchronization(new TransactionSynchronizationAdapter(){             public void afterCommit(){                 //do stuff right after commit                 System.out.println("commit!!!");              }         });         //do db stuff         dao.save();     } }