java.lang.NoClassDefFoundError

[gmoh]

15:09:05,818 [ContainerBackgroundProcessor[StandardEngine[Catalina]] org.springframework.web.context.ContextLoader] Context initialization failed
org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'ecdata.sessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: null
java.lang.NoClassDefFoundError
at org.hibernate.tuple.EntityMetamodel.class$(EntityM etamodel.java:41)
at org.hibernate.tuple.EntityMetamodel.<init>(EntityM etamodel.java:122)
at org.hibernate.persister.entity.AbstractEntityPersi ster.<init>(AbstractEntityPersister.java:412)
at org.hibernate.persister.entity.SingleTableEntityPe rsister.<init>(SingleTableEntityPersister.java:108 )

could anyone shed some light on what's causing this exception?
thanks

it's defined as the following:

<bean id="mySessionFactory"
class="org.springframework.orm.hibernate3.LocalSes sionFactoryBean">
<property name="dataSource"><ref bean="myDataSource"/></property>
<property name="mappingLocations">
<list>
<value>/WEB-INF/classes/SubscribedProduct.hbm.xml</value>
<value>/WEB-INF/classes/Subscriber.hbm.xml</value>
<value>/WEB-INF/classes/Subscription.hbm.xml</value>
<value>/WEB-INF/classes/User.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.Orac le9Dialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.generate_statistics">true</prop>
<prop key="hibernate.use_sql_comments">true</prop>
</props>
</property>
</bean>

[dsyliu]

Why do you have ecdata.sessionFactory thrown when you defined <bean id="mySessionFactory"> ? Did you check the spelling?

[gmoh]

sorry, i just removed the ecdata prefix after pasting the bean definitions.
any idea what's causing the exception?

[Costin Leau]

Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: null
java.lang.NoClassDefFoundError
at org.hibernate.tuple.EntityMetamodel.class$(EntityM etamodel.java:41)
at org.hibernate.tuple.EntityMetamodel.<init>(EntityM etamodel.java:122)
at org.hibernate.persister.entity.AbstractEntityPersi ster.<init>(AbstractEntityPersister.java:412)
at org.hibernate.persister.entity.SingleTableEntityPe rsister.<init>(SingleTableEntityPersister.java:108 )

There might be a problem with your mappings - i.e. the class defined in there are not found on the classpath (maybe a typo or just a classpath problem). Double check them and start diagnosis by adding just one file at a time.

[gmoh]

thanks. the classes are all in WEB-INF/classes directory.
plus, when i changed the log level to DEBUG for org.hibernate, i noticed that
the mappings were processed without errors.
below is a snippet of the log produced.

10:12:14,315 [ContainerBackgroundProcessor[StandardEngine[Catalina]] net.sf.ehcache.config.Configuration$DiskStore] Disk Store Path: /home/gmoh/catalina/temp
10:12:14,783 [ContainerBackgroundProcessor[StandardEngine[Catalina]] org.springframework.beans.factory.support.DefaultL istableBeanFactory] Destroying singletons in factory {org.springframework.beans.factory.support.Default ListableBeanFactory defining beans [ecdata.dataSource,ecdata.userDetailsService,ecdata .accessDecisionManager,ecdata.applicationListener, acegi.filterChainProxy,acegi.authenticationManager ,acegi.daoAuthenticationProvider,acegi.anonymousAu thenticationProvider,acegi.concurrentSessionContro ller,acegi.sessionRegistry,acegi.concurrentSession Filter,acegi.httpSessionContextIntegrationFilter,a cegi.anonymousProcessingFilter,acegi.securityEnfor cementFilter,acegi.filterInvocationInterceptor,ace gi.authenticationProcessingFilterEntryPoint,acegi. authenticationProcessingFilter,ecdata.credentialsR enewalFilter,ecdata.controller,handlerMapping,view Resolver,ecdata.sessionFactory]; root of BeanFactory hierarchy}
10:12:14,791 [ContainerBackgroundProcessor[StandardEngine[Catalina]] org.springframework.web.context.ContextLoader] Context initialization failed
org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'ecdata.sessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: null
java.lang.NoClassDefFoundError
at org.hibernate.tuple.EntityMetamodel.class$(EntityM etamodel.java:41)
at org.hibernate.tuple.EntityMetamodel.<init>(EntityM etamodel.java:122)
at org.hibernate.persister.entity.AbstractEntityPersi ster.<init>(AbstractEntityPersister.java:412)
at org.hibernate.persister.entity.SingleTableEntityPe rsister.<init>(SingleTableEntityPersister.java:108 )
at org.hibernate.persister.PersisterFactory.createCla ssPersister(PersisterFactory.java:55)

[Costin Leau]

IIRC this error might occur because hibernate-annotations.jar is missing. Make sure you have the latest 3.1 (which had a final release recently) and that you include all dependencies.
I assume you might find something on the HB forum also.

[gmoh]

i'm using hibernate 3.1 but i don't see hibernate-annotations.jar.
and by the way, i'm running the application in tomcat 5.0.x