1 Reply Latest reply on Dec 22, 2006 4:15 AM by smokingapipe

Queries work, persist does not work, in a Servlet

smokingapipe Dec 22, 2006 4:05 AM

Strange strange problem:

I have a Servlet. Within this Servlet I get a hold of a EntityManager like this:

Inside of init:

entityManagerFactory = Persistence.createEntityManagerFactory(persistenceContextName);

And then in the doPost() method, I get an actual EntityManager using the obvious entityManagerFactory method.

Strange thing, every time I try to persist an object using this EntityManager, nothing happens. No error, nothing, but nothing is persisted. But I can do queries with it and get the expected results!

Is there any explanation for this? This is all in JBoss 4.0.5.

Thanks

1. Re: Queries work, persist does not work, in a Servlet

smokingapipe Dec 22, 2006 4:15 AM (in response to smokingapipe)
Ha, I figured this out. I need to do

EntityTransaction transaction = entityManager.getTransaction(); transaction.begin(); entityManager.persist(...); transaction.commit(); entityManager.close();

Is that the right way to do it? It works!
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