java - Difference between Hibernate session.getTransaction().begin() vs session.beginTransaction()

Question

I couldnt find much information on this topic. Can someone explain me whats the Difference between Hibernate session.getTransaction().begin() vs session.beginTransaction() vs session.beginTransaction().begin()

Answer 1

Calling session.getTransaction().begin() doesn't make much sense as session.getTransaction() will retrieve the transaction already in progress because it assumes that a transaction is in progress. You are basically saying, begin this transaction that should already be in progress.

session.beginTransaction() will either begin a new Transaction if one isn't present, or it will use an existing transaction to begin the unit of work specified.

session.beginTransaction().begin() == session.beginTransaction()

For more information I suggest you have a look at the Hibernate documentation for your version of Hibernate. You should only be dealing with the low levels of Hibernate like this if you are not using a TransactionManager or you are using a JDBCTemplate so have a think because messing with transactions in this way gets messy fast.