beginning and finishing the JPA transaction

Tue Apr 20, 2010 4:31 pm

He is an small example to show you how to control the transaction (like starting and committing actions ) .

Code:: package com.codemiles.jpa; import javax.persistence.EntityManager; import javax.persistence.EntityManagerFactory; import javax.persistence.Persistence; public abstract class JPAService { private EntityManager entityManager; /** * @param args */ public void insertTopic(Topic topic){ EntityManagerFactory factory = Persistence .createEntityManagerFactory("persistenceUnitName"); entityManager = factory.createEntityManager(); entityManager.getTransaction().begin(); entityManager.persist(topic); entityManager.getTransaction().commit(); entityManager.close(); factory.close(); } }