Hibernate spring annotation sessions not being closed/flushed

Question

I\'ve \'inherited\' a project which uses Spring annotations to manage transactions/sessions with Hibernate. Or at least it\'s meant to be. Currently the Hibernate sessions n

Answer 1

One of my cleverer colleagues discovered what the problem was.

The actual problem was that the method that you've declared as @Transactional is an inherited method that is called from a base class, which means that Spring is unable to intercept calls to the method and wrap it in a transaction.

Spring implements transaction management as aspects, and aspects are implemented with proxies. The limitation of this is that if an object calls a method on itself (which is what's happening here because of inheritance) then the proxy doesn't see the call (because it happens internally within the class, like calling a private method), and can't so anything about it.

Which makes sense but seems to be incredibly dangerous as it fails to write any data without any error message or warning.