Create session factory in Hibernate 4

Question

I m having trouble generating a session factory in Hibernate 4  In Hibernate 3 I simple did   org hibernate cfg Configuration conf  HibernateUtil      getLimsInitializedConfiguration systemConfiguration  getHibernateconfFile      SessionFactory sf   conf configure   buildSessionFactory      Now I need to pass a ServiceRegistry class to buildSessionFactory  but the Javadocs are extremely vague on how to go about this  Any tips

User · Answer

Even there is an update in 4 3 0 API  ServiceRegistryBuilder is also deprecated in 4 3 0 and replaced with the StandardServiceRegistryBuilder  Now the actual code for creating the session factory would look this example on creating session factory

User · Answer

The following expresses the experience I had with hibernate 4 0 0 Final   The javadoc  distributed under LGPL license  of org hibernate cfg Configuration class states that      NOTE   This will be replaced by use of ServiceRegistryBuilder and    org hibernate metamodel MetadataSources instead after the 4 0 release at which point this class will become deprecated and scheduled for removal in 5 0   See HHH-6183  HHH-2578 and   HHH-6586 for details   After looking at issue 2578  i used something like this   ServiceRegistry serviceRegistry   new ServiceRegistryBuilder   configure   buildServiceRegistry    MetadataSources metadataSources   new MetadataSources serviceRegistry   metadataSources addResource  some mapping hbm xml   SessionFactory sessionFactory   metadataSources buildMetadata   buildSessionFactory      For it to start reading configuration  i had to modify my hibernate 3 2 6 configuration and mapping files to use xmlns  http   www hibernate org xsd hibernate-configuration  and xmlns  http   www hibernate org xsd hibernate-mapping  and also remove the dtd specifications   I couldn t find a way for it to inspect mappings defined in hibernate cfg xml and   hibernate  prefix for hibernate-related properties in hibernate cfg xml is no longer optional   This might work for some   I  for one  ran into some error because mapping files contained  lt cache usage  read-write    gt  and ended up using deprecated Configuration way   Configuration configuration   new Configuration   configure    SessionFactoryImpl sessionFactory    SessionFactoryImpl  configuration buildSessionFactory    EventListenerRegistry listenerRegistry   sessionFactory getServiceRegistry   getService EventListenerRegistry class   SolrIndexEventListener indexListener   new SolrIndexEventListener       a SaveOrUpdateEventListener i wanted to attach listenerRegistry appendListeners EventType SAVE UPDATE  indexListener     I had to programatically append event listeners because Configuration no longer looks for them in hibernate cfg xml

User · Answer

quote from http   www javabeat net session-factory-hibernate-4    There are many APIs deprecated in the hibernate core framework  One of the frustrating point at this time is  hibernate official documentation is not providing the clear instructions on how to use the new API and it stats that the documentation is in complete  Also each incremental version gets changes on some of the important API  One such thing is the new API for creating the session factory in Hibernate 4 3 0 on wards  In our earlier versions we have created the session factory as below   SessionFactory sessionFactory   new Configuration   configure   buildSessionFactory      The method buildSessionFactory is deprecated from the hibernate 4 release and it is replaced with the new API  If you are using the hibernate 4 3 0 and above  your code has to be   Configuration configuration   new Configuration   configure     StandardServiceRegistryBuilder builder   new StandardServiceRegistryBuilder   applySettings configuration getProperties      SessionFactory factory   configuration buildSessionFactory builder build       Class ServiceRegistryBuilder is  replaced by StandardServiceRegistryBuilder from 4 3 0  It looks like there will be lot of changes in the 5 0 release  Still there is not much clarity on the deprecated APIs and the suitable alternatives to use  Every incremental release comes up with more deprecated API  they are in way of fine tuning the core framework for the release 5 0

User · Answer

Configuration hibConfiguration   new Configuration                addResource  wp4core hibernate config table hbm xml                configure            serviceRegistry   new ServiceRegistryBuilder                applySettings hibConfiguration getProperties                 buildServiceRegistry     sessionFactory   hibConfiguration buildSessionFactory serviceRegistry   session   sessionFactory withOptions   openSession

User · Answer

Try this   package your package   import org hibernate HibernateException  import org hibernate SessionFactory  import org hibernate cfg Configuration  import org hibernate service ServiceRegistry  import org hibernate service ServiceRegistryBuilder   public class HibernateUtil       private static SessionFactory sessionFactory      private static ServiceRegistry serviceRegistry       static               try                       Configuration configuration   new Configuration                Configuration configuration   new Configuration   configure                 serviceRegistry   new ServiceRegistryBuilder   applySettings configuration getProperties    buildServiceRegistry                sessionFactory   configuration buildSessionFactory serviceRegistry                     catch  HibernateException he                        System err println  Error creating Session      he               throw new ExceptionInInitializerError he                        public static SessionFactory getSessionFactory                 return sessionFactory

User · Answer

The method buildSessionFactory is deprecated from the Hibernate 4 release and it is replaced with the new API  If you are using the Hibernate 4 3 0 and above  your code has to be   Configuration configuration   new Configuration   configure     StandardServiceRegistryBuilder builder   new StandardServiceRegistryBuilder            applySettings configuration getProperties      SessionFactory factory   configuration buildSessionFactory builder build

User · Answer

Yes  they have deprecated the previous buildSessionFactory API  and it s quite easy to do well   you can do something like this    EDIT   ServiceRegistryBuilder is deprecated  you must use StandardServiceRegistryBuilder  public void testConnection   throws Exception                logger info  Trying to create a test connection with the database                 Configuration configuration   new Configuration                configuration configure  hibernate sp cfg xml                StandardServiceRegistryBuilder ssrb   new StandardServiceRegistryBuilder   applySettings configuration getProperties                 SessionFactory sessionFactory   configuration buildSessionFactory ssrb build                 Session session   sessionFactory openSession                logger info  Test connection with the database created successfuly             For more reference and in depth detail  you can check the hibernate s official test case at https   github com hibernate hibernate-orm blob master hibernate-testing src main java org hibernate testing junit4 BaseCoreFunctionalTestCase java function  buildSessionFactory

User · Answer

In earlier versions session factory was created as below   SessionFactory sessionFactory   new Configuration   configure   buildSessionFactory      The method buildSessionFactory is deprecated from the hibernate 4 release and it is replaced with the new API  If you are using the hibernate 4 3 0 and above  your code has to be like   Configuration configuration   new Configuration   configure    StandardServiceRegistryBuilder builder   new StandardServiceRegistryBuilder    applySettings configuration getProperties     SessionFactory factory   configuration buildSessionFactory builder build

[java] Create session factory in Hibernate 4

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