Hi,

I'm using Hibernate Core 3.2.2.GA & Hibernate Annotations 3.3.0.GA.

I have the following code in my HibernateUtil.java but it gives error at annotationConfiguration.buildSessionFactory() part when I try to run my application. Any possible reason why it fails?

Code:
-------
annotationConfiguration = new AnnotationConfiguration();
annotationConfiguration.configure();
annotationConfiguration.buildSessionFactory();


Error:
------
java.lang.ClassCastException: org.hibernate.validator.event.ValidateEventListener
at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:783)
at my.com.snt.util.HibernateUtil.<clinit>(HibernateUtil.java:41)
at my.com.snt.cis.filter.HibernateFilter.doFilter(HibernateFilter.java:21)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
at java.lang.Thread.run(Thread.java:595)


Please advise.
Thanks.

An old jar somewhere in your classpath probably

Dear Emmanuel,

Thanks, I will try.
Probably not due to old jar in classpath, but you gave me a hint.
It could be the hibernate core jar file in my JBoss is the old one as I'm using Hibernate Core 3.2.2GA.

Between, do we usually need to put hibernate core, annotations jar in the JBoss lib directory when we deploy our application? or include these jars as part of our application lib.

Please advise.

I usually update the server, I never tried deploying them in the app only.

Dear Emmanuel,

I found out the cause for my error already.
It is because I didn't include hibernate-validator.jar in my project and jboss lib folder also doesn't have the jar file.

1. The strange thing is I don't really use Hibernate Validator in my coding, but why must I include this jar file? Any idea?

2. Like this case, Jboss does not have hibernate-validator.jar, so you mean you usually copy this file to the Jboss folder instead of attached with project correct? and if the jboss jar file is older than the one you use in development eg hibernate3.jar, you will replace this correct? will this affect the Jboss itself?

3. If i include jar file in project and Jboss lib directory also has the same jar but different version, do you know which jar will it use?

4. By the way, if you update the jar files in server instead of "bundle" with each application, when you update the hibernate3.jar in the server, existing applications that are running fine will be affected right? Would like to listen to your experience.

Please advise.

JBoss AS as of today does include Hibernate Validator through hibernate-annotations.jar (HAN 3.2 series)
As of Hibernate Annotations 3.3.0, validator has been split.
That's why you have the issue I guess

So, do you mean although my application does not use hibernate annotations but it's actually hibernate annotations itself that needs to use Validator to do something (which I don't know) and therefore gives error when validator jar is not included?

Please advise.

yes, because your new annotation version (included in your app) finds an old validator in the classpath (from JBoss).
If JBoss AS was not including validator, then you would be fine

Yes, you are right.

The original Jboss AS 4.0.3SP1 does comes with hibernate-annotations.jar which include Validator inside.

However, when I hit the error I try to replace the hibernate-annotations.jar in the JBoss AS directory. Unfortunately, like you mention, Validator is not included in the latest version of hibernate-annotations.jar. As a result, the error occur.

Now I understand.

Is the fact validator is not "bundled" as part of hibernate-annotations.jar documented somewhere? so that next time I would know where to look for if I hit strange error and save the troubleshooting time.

It's mentionned in the reference documentation and the migration guide wiki page I think.