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java Programming Glossary: emfThe easiest way to remove the bidirectional recursive relationships? http://stackoverflow.com/questions/10036958/the-easiest-way-to-remove-the-bidirectional-recursive-relationships private Gps gpsImei My source code EntityManagerFactory emf Persistence.createEntityManagerFactory JavaApplication21PU GpsJpaController.. GpsJpaController gjc new GpsJpaController emf Gps gps gjc.findGps 123456789012345 for int i 0 i gps.getCoordonneesList..
@PersistenceUnit annotation won't create an EntityManageFactory emf=null http://stackoverflow.com/questions/4381724/persistenceunit-annotation-wont-create-an-entitymanagefactory-emf-null annotation won't create an EntityManageFactory emf null I'm try to use the Sun Java PetStore Demo. In the CatalogFacade.. unitName myPetStorePU private EntityManagerFactory emf In all the methods of the CatalogFacade Sun has EntityManager.. the methods of the CatalogFacade Sun has EntityManager em emf.createEntityManager But I am getting a null pointer exception..
When should EntityManagerFactory instance be created/opened? http://stackoverflow.com/questions/4543947/when-should-entitymanagerfactory-instance-be-created-opened singleton new EmProvider private EntityManagerFactory emf private EmProvider public static EmProvider getInstance return.. public EntityManagerFactory getEntityManagerFactory if emf null emf Persistence.createEntityManagerFactory DB_PU if DEBUG.. EntityManagerFactory getEntityManagerFactory if emf null emf Persistence.createEntityManagerFactory DB_PU if DEBUG System.out.println..
JPA 2.0 using Hibernate as provider - Exception: No Persistence provider for EntityManager http://stackoverflow.com/questions/7808320/jpa-2-0-using-hibernate-as-provider-exception-no-persistence-provider-for-ent public static void main String args EntityManagerFactory emf Persistence.createEntityManagerFactory manager1 EntityManager.. manager1 EntityManager em emf.createEntityManager java hibernate jpa maven share improve..
Best practice to get EntityManagerFactory http://stackoverflow.com/questions/7862700/best-practice-to-get-entitymanagerfactory ServletContextListener private static EntityManagerFactory emf @Override public void contextInitialized ServletContextEvent.. public void contextInitialized ServletContextEvent event emf Persistence.createEntityManagerFactory unitname @Override public.. public void contextDestroyed ServletContextEvent event emf.close public static EntityManager createEntityManager if emf..
Class loading isolation issue (or How to use JPA2 on JBoss 5.x ?) http://stackoverflow.com/questions/8476944/class-loading-isolation-issue-or-how-to-use-jpa2-on-jboss-5-x Build EntityManagerFactory EntityManagerFactory emf Persistence.createEntityManagerFactory persistenceUnitName Restore..
What are the lightweight options one has to persist Java objects [closed] http://stackoverflow.com/questions/450864/what-are-the-lightweight-options-one-has-to-persist-java-objects I'm aware of include Hibernate and frameworks such as EMF but they sound and have been experienced to be too complex and..
When should EntityManagerFactory instance be created/opened? http://stackoverflow.com/questions/4543947/when-should-entitymanagerfactory-instance-be-created-opened in web.html I learned that EntityManagerFactory EMF should only be created once preferably in application scope... in application scope. And also make sure to close the EMF once it's used So I wrote EMF helper class for business methods.. also make sure to close the EMF once it's used So I wrote EMF helper class for business methods to use public class EmProvider..
http://stackoverflow.com/questions/7146207/what-is-the-best-macro-benchmarking-tool-framework-to-measure-a-single-threade and extensible tool platform based on Eclipse and four EMF models . Hence it is powerful but quite complex can slow Eclipse..
Best practice to get EntityManagerFactory http://stackoverflow.com/questions/7862700/best-practice-to-get-entitymanagerfactory . Here's a basic kickoff example @WebListener public class EMF implements ServletContextListener private static EntityManagerFactory..
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