Hi,

Anybody know the difference between hibernate2.jar (and other jars) which part of Hibernate2.1.6 and
hibernate2.jar (and other jars) which part of JBoss-4.0.0 ?

My jboss-service.xml has the following code :




When I build a .sar with the above jboss-service, deploy it into JBoss-4.0.0RC1, it works OK.
But if I deploy it into JBoss-4.0.0, I got the following error :

...
13:43:05,560 DEBUG [example.db.nusa] === Exception in nusa() : net.sf.hibernate.LazyInitializationException => Hibernate lazy instantiation problem

13:43:05,840 INFO [STDOUT] net.sf.hibernate.LazyInitializationException: Hibernate lazy instantiation problem

at net.sf.hibernate.jmx.SessionFactoryStub.getImpl(SessionFactoryStub.java:77)

at net.sf.hibernate.jmx.SessionFactoryStub.openSession(SessionFactoryStub.java:62)

... 10 more
Caused by: net.sf.hibernate.HibernateException: could not instantiate CacheProvider: net.sf.ehcache.hibernate.Provider

at net.sf.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:134)

at net.sf.hibernate.cfg.Configuration.buildSettings(Configuration.java:1132)

at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:766)

at net.sf.hibernate.jmx.HibernateService.buildSessionFactory(HibernateService.java:176)

at net.sf.hibernate.jmx.SessionFactoryStub.getImpl(SessionFactoryStub.java:74)

... 17 more

Caused by: java.lang.ClassNotFoundException: No ClassLoaders found for: net.sf.ehcache.hibernate.Provider

at org.jboss.mx.loading.LoadMgr3.beginLoadTask(LoadMgr3.java:198)

at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:463)

at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:374)

at java.lang.ClassLoader.loadClass(ClassLoader.java:235)

at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:141)

at net.sf.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:102)

at net.sf.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:131)

... 21 more

...

It looks that ehcache.jar ( part of Hibernate-2.1.6 ) must be deployed.
But why it's not part of JBoss-4.0.0 ?

Is there any relationship between the HibernateService as defined in net.sf.hibernate.jmx.HibernateService ( part of Hibernate-2.1.6 )
with hibernate-service.xml ( part of JBoss-4.0.0 ) ?

Thanks,
nusa.

Hibernate, by default, uses EHCache as it's second level cache. If you're using it, you've got to deploy it with your ear/war/sar/rar/etc.

Another option is to put it in the JBoss lib directory of the server configuration that you're using.

Yet another option is to use the jboss-cache (aka TreeCache) that comes with JBoss. For this you'll need to do a little configuration to enable it.

-- Damien