ClassCastException in Testing But Not Deployment

neilac333 · **Joined:** Fri Oct 05, 2007 1:17 pm **Posts:** 78

I am using Hibernate Search in my Seam web application. All my unit tests and integration tests (using SeamTest), which are quite rigorous, are passing with flying colors. However, when I try to use the functionality in my actual application, I get the following:

Code:

java.lang.ClassCastException: org.jboss.seam.persistence.FullTextHibernateSessionProxy
   at org.hibernate.search.impl.FullTextSessionImpl.<init>(FullTextSessionImpl.java:70)
   at org.hibernate.search.Search.createFullTextSession(Search.java:21)
   at org.hibernate.search.jpa.impl.FullTextEntityManagerImpl.getFullTextSession(FullTextEntityManagerImpl.java:37)
   at org.hibernate.search.jpa.impl.FullTextEntityManagerImpl.createFullTextQuery(FullTextEntityManagerImpl.java:60)
   at persistence.search.SearchImpl.getAdvancedSearchResults(SearchImpl.java:185)
   at jrockit.reflect.VirtualNativeMethodInvoker.invoke(Ljava.lang.Object;[Ljava.lang.Object;)Ljava.lang.Object;(Unknown Source)
   at java.lang.reflect.Method.invoke(Ljava.lang.Object;[Ljava.lang.Object;I)Ljava.lang.Object;(Unknown Source)
   at org.jboss.seam.util.Reflections.invoke(Reflections.java:21)
   at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
   at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
   at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:31)
   at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
   at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:46)
   at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
   at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:42)
   at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
   at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:106)
   at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:155)
   at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:91)
   at persistence.search.SearchImpl_$$_javassist_1.getAdvancedSearchResults()Ljava.util.List;(SearchImpl_$$_javassist_1.java:???)
   at web.SearchAction.doAdvancedSearch(SearchAction.java:186)
   at jrockit.reflect.VirtualNativeMethodInvoker.invoke(Ljava.lang.Object;[Ljava.lang.Object;)Ljava.lang.Object;(Unknown Source)
   at java.lang.reflect.Method.invoke(Ljava.lang.Object;[Ljava.lang.Object;I)Ljava.lang.Object;(Unknown Source)
   at org.jboss.seam.util.Reflections.invoke(Reflections.java:21)
   at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)

Any thoughts as to why this may be?

Thanks.

neilac333 · **Joined:** Fri Oct 05, 2007 1:17 pm **Posts:** 78

By the way, I meant the title to be "ClassCastException in Deployment But Not Testing." I am an idiot.

emmanuel · **Posted:** Tue Jan 15, 2008 8:55 pm

It might be that you use JBoss As 4.2.x. In this case, you need to replace hibernate-annotations.jar (3.3) and add hibernate-commons-annotations.jar in the server lib directory.

emmanuel · **Posted:** Tue Jan 15, 2008 8:57 pm

Hum actually, which version of Seam and Hibernate Search are you using? Can you describe a bit your deployment artefacts

neilac333 · **Joined:** Fri Oct 05, 2007 1:17 pm **Posts:** 78

I am using the Seam 2.0 GA distribution, which includes the Hibernate Search libraries, on WebLogic 9.2. When I get in the office tomorrow, I will give you more specifics on my deployment artifacts. Hopefully we can figure out what is different between my tests and my deployment.

Thanks.

neilac333 · **Joined:** Fri Oct 05, 2007 1:17 pm **Posts:** 78

Here is the list of JAR files in my WAR file (most of which are from the Seam 2.0 GA distribution):

Code:

62983 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/activation.jar
  5769 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/ant-antlr.jar
 92015 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/antlr-runtime.jar
443432 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/antlr.jar
 16777 Tue Jan 15 18:38:30 EST 2008 WEB-INF/lib/asm-attrs.jar
 26360 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/asm.jar
324238 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/cglib-nodep.jar
282338 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/cglib.jar
188671 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/commons-beanutils.jar
571259 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/commons-collections.jar
143602 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/commons-digester.jar
 38015 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/commons-logging.jar
4014911 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/core.jar
303207 Tue Jan 15 18:38:30 EST 2008 WEB-INF/lib/dom4j.jar
 32941 Tue Jan 15 18:38:30 EST 2008 WEB-INF/lib/ejb-api.jar
 29309 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/el-api.jar
2105147 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/groovy-all.jar
265130 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/hibernate-annotations.jar
 66426 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/hibernate-commons-annotations.jar
116544 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/hibernate-entitymanager.jar
192762 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/hibernate-search.jar
 60992 Tue Jan 15 18:38:30 EST 2008 WEB-INF/lib/hibernate-validator.jar
2242529 Tue Jan 15 18:38:30 EST 2008 WEB-INF/lib/hibernate.jar
450470 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/janino.jar
459663 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/javassist.jar
 73081 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jaxb-api.jar
 23618 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jaxws-api.jar
896119 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jboss-aop.jar
419324 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jboss-common-core.jar
133966 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jboss-el.jar
  7740 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jboss-logging-spi.jar
 11588 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jboss-seam-debug.jar
 65103 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jboss-seam-ioc.jar
209918 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jboss-seam-ui.jar
835020 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jboss-seam.jar
360347 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jbossxb.jar
658168 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jbpm-jpdl.jar
306089 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jcommon.jar
2005783 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jgroups.jar
 26257 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jms.jar
323012 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jsf-api.jar
300600 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jsf-facelets.jar
1210046 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jsf-impl.jar
100636 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jsp-api.jar
 49672 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jsr173_api.jar
  7989 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jsr181-api.jar
  5848 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jsr250-api.jar
 20801 Tue Jan 15 18:38:30 EST 2008 WEB-INF/lib/jstl.jar
  8812 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/jta.jar
367444 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/log4j.jar
538618 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/lucene-core.jar
388864 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/mail.jar
 65638 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/meldware-mailapi.jar
1804086 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/meldware-mailjmx.jar
413756 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/mvel14.jar
1879924 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/ojdbc5.jar
 52150 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/persistence-api.jar
111979 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/richfaces-api-3.1.3.GA.jar
1298805 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/richfaces-impl-3.1.3.GA.jar
1787738 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/richfaces-ui-3.1.3.GA.jar
127457 Tue Jan 15 18:38:28 EST 2008 WEB-INF/lib/urlrewritefilter.jar

Here is my persistence.xml:

Code:

<properties>
         <property name="hibernate.show_sql" value="true"/>
         <property name="hibernate.format_sql" value="true"/>
         <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle9Dialect"/>
         <property name="hibernate.cache.provider_class" value="org.hibernate.cache.HashtableCacheProvider"/>
         <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.WeblogicTransactionManagerLookup"/>
         <property name="hibernate.transaction.factory_class" value="org.hibernate.transaction.CMTTransactionFactory"/>
         <property name="hibernate.search.default.directory_provider" value="org.hibernate.search.store.FSDirectoryProvider"/>
         <property name="hibernate.search.default.indexBase" value="C:/search/indexes"/>
         <property name="hibernate.search.analyzer" value="org.apache.lucene.analysis.standard.StandardAnalyzer"/>
</properties>

Let me know if you need further information. Thanks for any insight.

emmanuel · **Posted:** Fri Jan 18, 2008 7:24 pm

Did you try that:

Quote:

It might be that you use JBoss As 4.2.x. In this case, you need to replace hibernate-annotations.jar (3.3) and add hibernate-commons-annotations.jar in the server lib directory.

neilac333 · **Joined:** Fri Oct 05, 2007 1:17 pm **Posts:** 78

No I didn't since I am not running on JBoss AS 4.2.x. I am running on WebLogic 9.2 as I mentioned previously. All the Hibernate libraries I am using are in the Seam 2.0 GA distribution. Are you suggesting that I should still get rid of hibernate-annotations.jar and just keep hibernate-commons-annotations.jar?

neilac333 · **Joined:** Fri Oct 05, 2007 1:17 pm **Posts:** 78

Perhaps I should mention that I am using JPA powered by Hibernate rather than Hibernate itself. The following represents what I am doing:

Code:

@In       //JPA EntityManager injected by Seam
private EntityManager em;
.
.
.
fullTextEntityManager = Search.createFullTextEntityManager(em);
.
.
.
fullTextQuery = fullTextEntityManager.createFullTextQuery(luceneQuery, Widget.class);

Let me know if you need anything else.

Thanks.

emmanuel · **Posted:** Sat Jan 19, 2008 12:22 am

I sort of understand why this could happen, but I don't understand why it does not in your unit tests.
Can you try not to use Search.createFTEM() but instead cast you em to a (FullTextEntityManager)?

If it does not work, try and do @In FullTextEntityManager em; to get an ftem injected directly

Is there a way you could strip down your app to the bare minimum so that I can test it myself?

neilac333 · **Joined:** Fri Oct 05, 2007 1:17 pm **Posts:** 78

Well, in my unit tests, Seam isn't really involved. Remember that the class that the "bad" cast is being performed on is a Seam class. It is related to Hibernate Search, but it isn't part of the Hibernate Search library. When I am testing, the interaction between Seam and Hibernate Search isn't tested. This might be a flaw in my testing approach in hindsight. I figured testing my Hibernate Search stuff in isolation and then testing the ability of my Seam-managed classes to find mock versions of my Hibernate Search stuff would be enough. After all, if Seam can find and use the mocks, and the Hibernate Search code finds everything well, then what could go wrong when the mocks are replaced by the real thing?

Oh how naive!

What configuration must I apply (presumably to components.xml) to either allow me to cast my em to ftem or to get the ftem injected directly?

I appreciate the offer, but it will be tough to strip down my app. Then again, if the other measures don't work, then I will give it a shot.

I will try your suggestions and get back to you.

Thanks.

emmanuel · **Posted:** Sat Jan 19, 2008 9:05 am

Yes I always have been unomfortable with mocking esp since you can run an in memory DB and use the HSearch RamDirectoryProvider

No configuration is needed to cast or inject a FTEM
http://docs.jboss.com/seam/2.0.1.CR1/reference/en/html/search.html

What really puzzles me is that the DVDStore example does more or less what you're doing and there is not CCE.

neilac333 · **Joined:** Fri Oct 05, 2007 1:17 pm **Posts:** 78

I suppose I need to verify this, but if no configuration is needed, then I must be injecting an ftem anyway. So when I call this

Code:

Search.createFullTextEntityManager(em);

...the method should be returning the same em instance injected into the component but simply downcast. Assuming I understand your code correctly.

In my unit tests, I am bootstrapping an em and calling setField in SeamTest to simulate injection. Then Search.createFullTextEntityManager() is called to get me the ftem from the em.

In the case of the deployment, because I have added all the right JARs, the ftem itself should be injected directly, and the call to Search.createFullTextEntityManager() should just return the same object.

So I don't see how anything I am doing is "wrong." Has the DVDStore example been tried on WebLogic? Is it possible something wacky is happening with JAR files?

Well, the hunt for the answer continues.

Thanks.

neilac333 · **Joined:** Fri Oct 05, 2007 1:17 pm **Posts:** 78

I forgot to mention also that if you look at the top of the stack trace, all the fun starts with the class org.hibernate.search.jpa.impl.FullTextEntityManagerImpl. If that is the class of object that is supposed to be injected with

Code:

@In
private FullTextEntityManager entityManager

then it would seem that I obtained the FullTextEntityManager successfully. I suppose the issue is if in fact I got the right FullTextEntityManager implementation by doing it the current way. Or if "my" way somehow contradicts the expectation of Gavin's code in FullTextHibernateSessionProxy.

Thanks.

neilac333 · **Joined:** Fri Oct 05, 2007 1:17 pm **Posts:** 78

Incidentally, it looks also like the instance of FullTextHibernateSessionProxy is what is returned from the call to em.getDelegate() when Hibernate Search is enabled. Is this so? I see nothing in the documentation about this class, so what purpose does it serve?

Thanks.