Hey,

I'm trying to use JBoss TreeCache with Hibernate (2.1). I specified the right cache provider in my jboss-service file (net.sf.hibernate.cache.TreeCacheProvider) but it doesn't work.

I get the following error : NoClassDefFound : org/jboss/cache/TransactionManagerLookup

What jars do i have to add and where to put them? And if is not a jar problem, just listen to any help.


Thx

HI Jean,

I 'm confronted to a similar problem (java.lang.NoClassDefFoundError: org/jboss/cache/TreeCache).

I found in the lib folder of the hibernate distribution the jar "jboss-cache.jar" that contains the "TransactionManagerLookup" class. So I put it in the lib folder of my <JBoss dist>\server\default\lib, restarted the server again but that doesn't resolved it.

I even added it (jboss-cache.jar) to my ear file (of course I didn't forget to add <module><java>jboss-cache.jar</java><module> to the application.xml file) without success.

Maybe I'm putting the jar in the wrong place.

---------------
HIBERNATE VERSION: 2.1.3
DATABASE: Hypersonic provided with JBOSS 3.2.2

CONFIG FILE: hibernate.cfg.xml containing:

<hibernate-configuration>

<!-- a SessionFactory instance listed as /jndi/name -->
<session-factory name="java:comp/env/hibernate/SessionFactory">

<!-- properties -->
<property name="connection.driver_class">org.hsqldb.jdbcDriver</property>
<property name="connection.url">jdbc:hsqldb:hsql://localhost:1701</property>
<property name="connection.datasource">java:/DefaultDS</property>
<property name="connection.username">sa</property>
<property name="connection.password"></property>
<property name="dialect">net.sf.hibernate.dialect.HSQLDialect</property>
<property name="show_sql">false</property>
<property name="use_outer_join">false</property>
<property name="transaction.factory_class">net.sf.hibernate.transaction.JTATransactionFactory</property>
<property name="jta.UserTransaction">java:comp/UserTransaction</property>
<property name="transaction.manager_lookup_class">net.sf.hibernate.transaction.JBossTransactionManagerLookup</property>
<property name="cglib.use_reflection_optimizer">false</property>

<!-- specifies the cache provider-->
<property name="hibernate.cache.provider_class">net.sf.hibernate.cache.TreeCacheProvider</property>

<!-- mapping files -->
<mapping resource="HibernateTestValueImpl.hbm.xml"/>

<!-- specifies the cache provider-->
<class-cache class="com.ni2.core.HibernateTestValueImpl" usage="read-only"/>

</session-factory>

</hibernate-configuration>

FULL STACK TRACE OF THE EXCEPTION:
15:00:36,751 ERROR [LogInterceptor] Unexpected Error:
java.lang.NoClassDefFoundError: org/jboss/cache/TreeCache
at net.sf.hibernate.cache.TreeCache.<init>(TreeCache.java:40)
at net.sf.hibernate.cache.TreeCacheProvider.buildCache(TreeCacheProvider.java:14)
at net.sf.hibernate.cfg.Configuration.configureCaches(Configuration.java:1107)
at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:767)
at com.ni2.core.persist.PersistenceManager.init(PersistenceManager.java:42)
at com.ni2.core.JVTHelperHibernateCompany.getManagedEntitiesByType(JVTHelperHibernateCompany.java:768)
at com.axone.ejb.common.impl.JVTHelperGroup.getManagedEntitiesByType(JVTHelperGroup.java:394)
at com.axone.ejb.common.impl.JVTExtendedSessionBean.getManagedEntitiesByType(JVTExtendedSessionBean.java:172)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:683)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:185)
at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:72)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:84)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:267)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:128)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:118)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
at org.jboss.ejb.StatelessSessionContainer.internalInvoke(StatelessSessionContainer.java:331)
at org.jboss.ejb.Container.invoke(Container.java:700)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:367)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
at sun.rmi.transport.Transport$1.run(Transport.java:148)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
at java.lang.Thread.run(Thread.java:534)

Has to be in the same classloader than the one loading Hibernate2.jar

I am having the same problem. I put the jbosscache.jar, hibernate2 jar and other hibernate related jars into the same sar file. The sar is in an ear file.
I still got "java.lang.NoClassDefFoundError: org/jboss/cache/TreeCache"

If it is because of classloader problem, how jboss found Hibernate jar, though.

Please help.

Thanks.

Richard

In my configuration, I have jboss-cache.jar in the same folder as hibernate2.jar but JBoss still don't find the caching classes.

I got it finally working by put both jboss-cache.jar and jgroups.jar into deployment's lib (I missed the jgroups.jar). I think if I include these two into my .sar or .ear it should work too. jgroups is not in the hiberbate lib, but you can find it from jbosscache 1.0 release.

I have 2 questions regarding JBoss TreeCache usage with Hibernate

1. I'm trying to turn on caching for one of my objects and the following message appears in the log file

ERROR [org.jgroups.blocks.RpcDispatcher] exception=java.io.NotSerializableException: org.digijava.kernel.request.Site

This class is not serializable. Is it required to implement java.io.Serializable interface for Hibernate-persisted classes?

2. As I can see from the source of net.sf.hibernate.cache.TreeCache class, each item in the cache has its own FQN, while key for the object in the cache is a string "item", defined by the constant. here is the example:


I'm wondering, what are the benefits of this method in comparision with the following:



where regionFqn = new Fqn(regionName) assignment happens in the constructor?

Thank you

Sorry, I think I've just found the reason why #1 happens.

hey mikheil, can you tell us why #1 is happening