Does the spring boot annotation @Repository also automatically come with the @Transactional annotati-CodePudding

@Repository
public interface BatchRepository extends CrudRepository<Batch,Integer> {}

So right here ^ for example does this spring boot annotation @Repository also automatically come with the @Transactional annotation too?

or do I need to specifically declare @Transactional?

Thank you

I don't know how to test this, and can't find any relevant documentation on this, so I'm asking stack overflow experts Haha.

CodePudding user response：

@Repository does not automatically add @ Transactional, you need to explicitly mention it. With the recent versions of spring, you don't need to even provide @Repository on your BatchRepository, Spring Boot is smart enough to automatically figure out it is the implementation of CrudRepository and create a BatchRepository repository bean.

@Transactional
public interface BatchRepository extends CrudRepository<Batch,Integer> {}

Should be equivalent to

@Transactional
@Repository
public interface BatchRepository extends CrudRepository<Batch,Integer> {}

I prefer to add @Transactional in Service Layer rather than in Repository layer as Repository is outside of business context and it should not know about isolation.

CodePudding user response：

You need to declare @Transactional method where you need it by yourself. It is often done this way (or withoud autowired with lombok annotations):

@Service
public class TestService{
   @Autowired
   public BatchRepository batchRepository;
   
   @Transactional
   public Batch addBatch(Batch batchToInsert){
      return batchRepository.save(batchToInsert);
   }
}