Exception getting value of property resultList of base of ty

[sstrenn]

I am trying out seam 1.1.6 and jboss 4.0.5 ejb. I setup a project with seam-gen that accesses a simple little mysql database with users and blogs. After I call seam generate-entities, and restart seam, I get the following error trace upon accessing the users page. Any ideas as to what is wrong? BTW - same thing happens w/mysql.


08:05:54,875 ERROR [STDERR] Feb 15, 2007 8:05:54 AM com.sun.facelets.FaceletViewHandler handleRenderException
SEVERE: Error Rendering View[/UserList.xhtml]
javax.faces.el.EvaluationException: /UserList.xhtml @57,57 rendered="#{empty userList.resultList}": Exception getting value of property resultList of base of type : blogtest.UserList$$EnhancerByCGLIB$$ef8d664f
at com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:60)
at javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:1075)
at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:241)
at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:573)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:29)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:43)
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:96)
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.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
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:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
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(Unknown Source)
Caused by: javax.faces.el.EvaluationException: Bean: blogtest.UserList$$EnhancerByCGLIB$$ef8d664f, property: resultList
at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:442)
at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:82)
at com.sun.facelets.el.LegacyELContext$LegacyELResolver.getValue(LegacyELContext.java:141)
at com.sun.el.parser.AstValue.getValue(AstValue.java:117)
at com.sun.el.parser.AstEmpty.getValue(AstEmpty.java:49)
at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:192)
at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
at com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:56)
... 32 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:438)
... 39 more
Caused by: java.lang.IllegalArgumentException: org.hibernate.hql.ast.QuerySyntaxException: User is not mapped [select user from User user]
at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:634)
at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:95)
at org.jboss.seam.framework.EntityQuery.createQuery(EntityQuery.java:104)
at org.jboss.seam.framework.EntityQuery.getResultList(EntityQuery.java:40)
at org.jboss.seam.framework.EntityQuery$$FastClassByCGLIB$$225925e6.invoke()
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:45)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:55)
at org.jboss.seam.interceptors.OutcomeInterceptor.interceptOutcome(OutcomeInterceptor.java:21)
at sun.reflect.GeneratedMethodAccessor105.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
at org.jboss.seam.interceptors.RollbackInterceptor.rollbackIfNecessary(RollbackInterceptor.java:29)
at sun.reflect.GeneratedMethodAccessor104.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
at org.jboss.seam.interceptors.ConversationInterceptor.endOrBeginLongRunningConversation(ConversationInterceptor.java:52)
at sun.reflect.GeneratedMethodAccessor103.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
at org.jboss.seam.interceptors.TransactionInterceptor$1.work(TransactionInterceptor.java:28)
at org.jboss.seam.util.Work.workInTransaction(Work.java:37)
at org.jboss.seam.interceptors.TransactionInterceptor.doInTransactionIfNecessary(TransactionInterceptor.java:23)
at sun.reflect.GeneratedMethodAccessor102.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
at org.jboss.seam.interceptors.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:27)
at sun.reflect.GeneratedMethodAccessor101.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
at org.jboss.seam.intercept.RootInterceptor.createSeamInvocationContext(RootInterceptor.java:144)
08:05:54,875 ERROR [STDERR]
at org.jboss.seam.intercept.RootInterceptor.invokeInContexts(RootInterceptor.java:129)
at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:102)
at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:145)
at org.jboss.seam.intercept.JavaBeanInterceptor.intercept(JavaBeanInterceptor.java:80)
at blogtest.UserList$$EnhancerByCGLIB$$ef8d664f.getResultList()
... 44 more
Caused by: org.hibernate.hql.ast.QuerySyntaxException: User is not mapped [select user from User user]
at org.hibernate.hql.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:158)
at org.hibernate.hql.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:87)
at org.hibernate.hql.ast.tree.FromClause.addFromElement(FromClause.java:70)
at org.hibernate.hql.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:265)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3056)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:2945)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:688)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:544)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:281)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:229)
at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:228)
at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:160)
at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:111)
at org.hibernate.engine.query.HQLQueryPlan.(HQLQueryPlan.java:77)
at org.hibernate.engine.query.HQLQueryPlan.(HQLQueryPlan.java:56)
at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:72)
at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:133)
at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:112)
at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1623)
at org.hi

[pmuir]

This is key part of the above stack trace:

Caused by: org.hibernate.hql.ast.QuerySyntaxException: User is not mapped [select user from User user]

I would infer from this that something went wrong with your generate entities. Does the User object exist and is it mapped?

[swells77]

I am having the same problem with other seam generated entities - any ideas?

[nathandennis]

Ditto seam generated entities have a bug of some sort. If your apps are like mine,, i get this error message randomly after about five queries.

has anyone figure out what is going on,,, or have a work around??

[nathandennis]

I dont know why someone hasnt said something before now... make me want to pay some maintains to these jokes,,,,

the problem appears to have something to do with the number of connections jboss is handling and the clean up of an unused connection failing. after i restarted the Jboss deplorer i have had trouble reproducing the error. but i intend to do more testing. i can't have apps in the field failing every time jboss has a nervous twitch.

boy i tell you this place in a mountain of information.. just come here to get all your problem taken care of.