Transaction-type for local postgres tool?

Question

I have a local application (no JEE server) that shall use postgres at the end. I'd like to chose Hibernate as my database framework. I'm now creating the persistence.xml , and wonder which transaction-type I should chose: JTA or RESOURCE_LOCAL, or none?

<persistence-unit name="travelport" transaction-type="JTA">

Further I'd like to use the Hibernate EntityManager in my application. Can I have my application manage the transaction itself somehow (any framework)? Or do I always have to open, commit and close the transactions myself when not using an application server?

Answer 1

You really only need the JTA transaction type if you're running in an EE environment, so definitely choose RESOURCE_LOCAL .

As for transaction management, have a look at Spring Transaction Management - I won't repeat the good examples in that link here, but feel free to post follow-up questions if needs be :-)

And don't forget DB pooling as well ( DBCP , C3P0 etc).

Cheers,

Answer 2

For a SE application, you should use RESOURCE_LOCAL and manage the transaction by yourself.

Automatic transaction management would require the beans/services to have a managed lifecycle and a possibility to plug in into that lifecycle.

I am not aware of a readymade lifecycle framework for Java (Spring is a good option for servlet containers, but be aware of all the goods it brings to the table in addition to the bean lifecycle).