Caution with disposing sessionTransaction

Posted on One min read

In nhibernate 1.2.0 beta versions a similar code path works well without problem

ISession session = SessionHelper.GetSession();
session.BeginTransaction();
//do something
session.Transaction.Rollback();
session.Transaction.Dispose();
session.BeginTransaction();
//Do something
session.Transaction.Rollback();

But above code is not legal since a disposed transaction cannot be used anymore. Until version 1.2.0 beta 3 the Dispose method of the Transaction Object did not mark transaction as disposed, so it can be reused. Starting from NHibernate 1.2.0 GA the above code will throw a NullReferenceException. The solution is not to dispose Session.Transaction if you plan to restart a new transaction again.

Alk.