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mattjiang
 Post subject: Why it takes so long to build session factory?
PostPosted: Sat Apr 17, 2004 8:43 am 
Beginner
Beginner

Joined: Sat Jan 31, 2004 10:09 am
Posts: 26
hi, my application have more than 70 entities to be used. Each time the application starts up, it takes me such a long time to wait Hibernate builds the session factory.
Code:
11467 [main] INFO  net.sf.hibernate.impl.SessionFactoryImpl  - building session factory
34680 [main] INFO  net.sf.hibernate.impl.SessionFactoryObjectFactory  - no JNDI name configured


As you can see above, it took almost 24 seconds to build these entities.
I am poor so that I only have P III 850 CPU and 512MB ram. But I don't want to buy a new one because of this problem.

Do you have any instruction to speed up the building process?

thanks a lot
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anthony
 Post subject:
PostPosted: Sat Apr 17, 2004 8:45 am 
Hibernate Team
Hibernate Team

Joined: Thu Dec 18, 2003 9:55 am
Posts: 1977
Location: France
maybe serialize sessionFactory and desirialize it at startup
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welinder
 Post subject:
PostPosted: Tue Apr 18, 2006 2:57 am 
Newbie

Joined: Thu Mar 23, 2006 11:14 am
Posts: 6
When trying to deserialize a SessionFactory from file I get the following output:

Code:
2006-04-18 08:39:47,678 WARN  [main] impl.SessionFactoryObjectFactory: Not found: 59548a9d0aabb990010aabb999e00000
2006-04-18 08:39:47,678 WARN  [main] impl.SessionFactoryObjectFactory: Not found: null
2006-04-18 08:39:47,678 DEBUG [main] util.HibernateInventoryUtil: Exception while reading sessionfactory from file: Could not find a SessionFactory named: null

Code to store sessionfactory:
Code:
sessionFactory = new Configuration()
    .configure( "hibernate.inventory.cfg.xml" )
    .buildSessionFactory();
ObjectOutputStream oos = new ObjectOutputStream( new FileOutputStream( filename ) );
oos.writeObject( sessionFactory );
oos.close();

Code to read:
Code:
ObjectInputStream ois = new ObjectInputStream( new FileInputStream( filename ) );
sessionFactory = ( SessionFactory )ois.readObject();
ois.close();


I'm usin gHibernate 3.0. Bye
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pepelnm
 Post subject:
PostPosted: Tue Apr 18, 2006 3:26 am 
Expert
Expert

Joined: Thu Sep 22, 2005 10:29 am
Posts: 285
Location: Almassera/Valencia/Spain/EU/Earth/Solar system/Milky Way/Local Group/Virgo Supercluster
do you have a name for your session factory? :

Code:
<session-factory name="inventory">
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welinder
 Post subject:
PostPosted: Tue Apr 18, 2006 5:00 am 
Newbie

Joined: Thu Mar 23, 2006 11:14 am
Posts: 6
Thanks for the advice. Now I get:

Code:
2006-04-18 10:56:27,018 WARN  [main] impl.SessionFactoryObjectFactory: Not found: 59548a9d0aac3659010aac3662030000
2006-04-18 10:56:27,018 WARN  [main] impl.SessionFactoryObjectFactory: Not found: inventory
2006-04-18 10:56:27,018 DEBUG [main] util.HibernateInventoryUtil: Exception while reading sessionfactory from file: Could not find a SessionFactory named: inventory


Also when the factory is built:
Code:
2006-04-18 10:56:29,909 INFO  [main] impl.SessionFactoryImpl: building session factory
2006-04-18 10:56:32,221 INFO  [main] impl.SessionFactoryObjectFactory: Factory name: inventory
2006-04-18 10:56:32,221 INFO  [main] util.NamingHelper: JNDI InitialContext properties:{}
2006-04-18 10:56:32,221 WARN  [main] impl.SessionFactoryObjectFactory: Could not bind factory to JNDI
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial
   at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:645)
   at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
   at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:284)
   at javax.naming.InitialContext.getNameParser(InitialContext.java:439)
   at org.hibernate.util.NamingHelper.bind(NamingHelper.java:52)
   at org.hibernate.impl.SessionFactoryObjectFactory.addInstance(SessionFactoryObjectFactory.java:90)
   at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:260)
   at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1005)
   at com.teliasonera.wal.inventory.util.HibernateInventoryUtil.init(HibernateInventoryUtil.java:29)


Thanks for helping me! Bye,
Dag.
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pepelnm
 Post subject:
PostPosted: Thu Apr 20, 2006 10:51 am 
Expert
Expert

Joined: Thu Sep 22, 2005 10:29 am
Posts: 285
Location: Almassera/Valencia/Spain/EU/Earth/Solar system/Milky Way/Local Group/Virgo Supercluster
Try serializing the Configuration object instead of the SessionFactory.

http://opensource.atlassian.com/projects/hibernate/browse/HB-492
http://forum.hibernate.org/viewtopic.php?t=958364
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