ClassCastException in OracleSQLBuilderImpl.class
Hi,
I'm trying to run a simple test application on JDeveloper 9.0.5.0.0 using Postgresql as a database. I got the connection working just fine (I can browse the table structure and view table data) and I followed the ADF tutorial to create the test application:
"Developing a Web Application Using the Default Technology Scope Tutorial"
However, when I want to run the application I get a ClassCastException in oracle.jbo.server.OracleSQLBuilderImpl in isConnectionAlive().
I investigated the class file and indeed a cast to an OracleConnection object is done.
I don't understand how this is supposed to work with third party JDBC drivers. Am I missing something?
Can anyone shed any light on this?
Regards,
Marc.
NB. If necessary, I can provide the complete stacktrace.
Steve,
The question we have then is, If the BC4J configuration indicates SQL flavor is set to "SQL92", and the type map is set to "java" then why is OracleSQLBuilderImpl.class being executed?
Thanks again,
Phil Scuderi
Following is the BC4J version number, the text of the data-source.xml file, and the stack trace.
********** We are deploying the application using BC4J version 9.0.3.10.62.
********** The date-sources.xml is:
<?xml version = '1.0' encoding = 'windows-1252'?>
<!DOCTYPE data-sources PUBLIC "Orion data-sources" "http://xmlns.oracle.com/ias/dtds/data-sources.dtd">
<data-sources>
<data-source class="com.evermind.sql.DriverManagerDataSource" connection-driver="com.attunity.jdbc.NvDriver" ejb-location="jdbc/AttunityDevelopmentDS" inactivity-timeout="30" location="jdbc/AttunityDevelopmentCoreDS" name="jdev-connection:AttunityDevelopment" password="dianif" pooled-location="jdbc/AttunityDevelopmentPooledDS" url="jdbc:attconnect://atifinad:[email protected]:8880/finaid;" username="atifinad" xa-location="jdbc/xa/AttunityDevelopmentXADS"/>
</data-sources>
********** The exception stack trace is:
Exception Stack Trace:
java.lang.ClassCastException: com.attunity.jdbc.NvPreparedStatement
at
oracle.jbo.server.OracleSQLBuilderImpl.doStatementSetRowPrefetch(OracleSQLBu
ilderImpl.java:926)
at
oracle.jbo.server.DBTransactionImpl.createPreparedStatement(DBTransactionImp
l.java:2487)
at
oracle.jbo.server.DBTransactionImpl.createReUsePreparedStatement(DBTransacti
onImpl.java:3234)
at
oracle.jbo.server.ViewObjectImpl.getPreparedStatement(ViewObjectImpl.java:63
23)
at
oracle.jbo.server.QueryCollection.executeQuery(QueryCollection.java:456)
at
oracle.jbo.server.ViewObjectImpl.executeQueryForCollection(ViewObjectImpl.ja
va:2593)
at oracle.jbo.server.ViewRowSetImpl.execute(ViewRowSetImpl.java:502)
at
oracle.jbo.server.ViewRowSetImpl.executeQuery(ViewRowSetImpl.java:543)
at
oracle.jbo.server.ViewObjectImpl.executeQuery(ViewObjectImpl.java:2557)
at
wsu.finaid.persistence.bc4j.FinAidAwardModuleImpl.getAwardSummary(FinAidAwar
dModuleImpl.java:74)
at
edu.wsu.student.finaid.resource.handler.R_FinAidScholAwdSumHandlerImpl.getAw
ardSummary(R_FinAidScholAwdSumHandlerImpl.java:82)
at
edu.wsu.student.finaid.process.MP_GetAwardSummary.persist(MP_GetAwardSummary
.java:142)
at
oracle.cle.process.PersistingProcess.start(PersistingProcess.java:83)
at oracle.cle.process.CLEStateMachine.start(CLEStateMachine.java:61)
at oracle.cle.process.Process.start(Process.java:108)
at oracle.cle.process.GenericProcess.start(GenericProcess.java:84)
at oracle.cle.process.ParentProcess.start(ParentProcess.java:226)
at oracle.cle.process.DisplayGroup.start(DisplayGroup.java:75)
at oracle.cle.process.CLEStateMachine.start(CLEStateMachine.java:61)
at oracle.cle.process.Service.start(Service.java:389)
at
oracle.clex.process.controller.HttpServletController.doPost(HttpServletContr
oller.java:422)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:283)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:336)
at
com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.ja
va:66)
at
oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:284)
at
com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispa
tcher.java:539)
at
com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletReq
uestDispatcher.java:285)
at
com.evermind.server.http.ServletRequestDispatcher.forward(ServletRequestDisp
atcher.java:231)
at
oracle.portal.provider.v2.render.http.ResourceRenderer.renderBody(Unknown
Source)
at oracle.portal.provider.v2.render.RenderManager.render(Unknown
Source)
at oracle.portal.provider.v2.DefaultPortletInstance.render(Unknown
Source)
at
oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.showPortlet(Unknown
Source)
at
oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.handleHttp(Unknown
Source)
at java.lang.reflect.Method.invoke(Native Method)
at oracle.webdb.provider.v2.adapter.SOAPServlet.doHTTPCall(Unknown
Source)
at oracle.webdb.provider.v2.adapter.SOAPServlet.service(Unknown
Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:336)
at
com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.ja
va:66)
at
oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:284)
at
com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispa
tcher.java:539)
at
com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletReq
uestDispatcher.java:285)
at
com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandle
r.java:771)
at
com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:170)
at
com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:72)
at
EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.ja
va:802)
at java.lang.Thread.run(Thread.java:484)
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( TestsDocument ) XmlLoader.parse ( pFile );
I get a classcastexception, the returned class is of type com.bea.xbean.values.XmlAnyTypeImpl
What am I doing wrong?It actually turned out that when I used the factory inside of my document, everything
parses fine. If I use just the xmlloader, the exception is thrown.
"Jerald Pratt" <[email protected]> wrote:
>
Brian,
I had a similar problem and I'm trying to remember what it was. I believe
the
problem turned out to be with my XML file or XML Schema file and not
the code.
Not having a valid XML file and/or XML Schema file will cause a variety
of unexpected
problems. You should use a tool that will validate both types of XML
files before
running further tests. I use XML Spy from www.altova.com which works
great.
Jerald
"brian" <[email protected]> wrote:
I am making this call to load my document. The parse seems to happen
ok. But
then...
TestsDocument doc =
( TestsDocument ) XmlLoader.parse ( pFile );
I get a classcastexception, the returned class is of type com.bea.xbean.values.XmlAnyTypeImpl
What am I doing wrong? -
Sun Role Manager 4.1 – WebLogic server not getting started
We are using Sun RM 4.1, WebLogic 10.3
In the recent past we are seeing a strange issue only in our production environment. When we wanted to restart the server, the server doesn’t come up at the first time, it fails will below listed errors, and when started second time it comes up.
Any help is greatly appreciated!
Error message:
User defined listener org.springframework.web.context.ContextLoaderListener failed: java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.String.
-AND-
Unable to set the activation state to true for the application 'rbacx'
Detailed Log:
####<Sep 26, 2011 8:53:19 PM EDT> <Info> <ServletContext-/rbacx> <srmprod> <SRM_MT_SRMPROD_7003> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <> <> <1317084799663> <BEA-000000> <Initializing Spring root WebApplicationContext>
####<Sep 26, 2011 8:53:36 PM EDT> <Warning> <HTTP> <srmprod> <SRM_MT_SRMPROD_7003> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1317084816581> <BEA-101162> <*User defined listener org.springframework.web.context.ContextLoaderListener failed: java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.String.*
java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.String
at org.springframework.beans.factory.support.AbstractBeanDefinition.getBeanClassName(AbstractBeanDefinition.java:364)
at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:377)
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1135)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:522)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1174)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:754)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:422)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
at weblogic.servlet.internal.EventsManager$FireContextListenerAction.run(EventsManager.java:465)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(Unknown Source)
at weblogic.servlet.internal.EventsManager.notifyContextCreatedEvent(EventsManager.java:175)
at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1784)
at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:2999)
at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1371)
at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:468)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:60)
at weblogic.application.internal.flow.ScopedModuleDriver.start(ScopedModuleDriver.java:200)
at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:117)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:60)
at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:27)
at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:635)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:212)
at weblogic.application.internal.SingleModuleDeployment.activate(SingleModuleDeployment.java:16)
at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:162)
at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:79)
at weblogic.deploy.internal.targetserver.BasicDeployment.activate(BasicDeployment.java:184)
at weblogic.deploy.internal.targetserver.BasicDeployment.activateFromServerLifecycle(BasicDeployment.java:361)
at weblogic.management.deploy.internal.DeploymentAdapter$1.doActivate(DeploymentAdapter.java:51)
at weblogic.management.deploy.internal.DeploymentAdapter.activate(DeploymentAdapter.java:196)
at weblogic.management.deploy.internal.AppTransition$2.transitionApp(AppTransition.java:30)
at weblogic.management.deploy.internal.ConfiguredDeployments.transitionApps(ConfiguredDeployments.java:233)
at weblogic.management.deploy.internal.ConfiguredDeployments.activate(ConfiguredDeployments.java:169)
at weblogic.management.deploy.internal.ConfiguredDeployments.deploy(ConfiguredDeployments.java:123)
at weblogic.management.deploy.internal.DeploymentServerService.resume(DeploymentServerService.java:173)
at weblogic.management.deploy.internal.DeploymentServerService.start(DeploymentServerService.java:89)
at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
>
####<Sep 26, 2011 8:53:36 PM EDT> <Info> <Deployer> <srmprod> <SRM_MT_SRMPROD_7003> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1317084816585> <BEA-149059> <Module rbacx of application rbacx is transitioning from STATE_ADMIN to STATE_PREPARED on server SRM_MT_SRMPROD_7003.>
####<Sep 26, 2011 8:53:36 PM EDT> <Info> <ServletContext-/rbacx> <srmprod> <SRM_MT_SRMPROD_7003> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <> <> <1317084816589> <BEA-000000> <Closing Spring root WebApplicationContext>
####<Sep 26, 2011 8:53:36 PM EDT> <Info> <ServletContext-/rbacx> <srmprod> <SRM_MT_SRMPROD_7003> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <> <> <1317084816589> <BEA-000000> <Shutting down log4j>
####<Sep 26, 2011 8:53:36 PM EDT> <Info> <Deployer> <srmprod> <SRM_MT_SRMPROD_7003> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1317084816611> <BEA-149060> <Module rbacx of application rbacx successfully transitioned from STATE_ADMIN to STATE_PREPARED on server SRM_MT_SRMPROD_7003.>
####<Sep 26, 2011 8:53:36 PM EDT> <Error> <Deployer> <srmprod> <SRM_MT_SRMPROD_7003> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1317084816611> <BEA-149231> <*Unable to set the activation state to true for the application 'rbacx'.*
weblogic.application.ModuleException:
at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1373)
at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:468)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:60)
at weblogic.application.internal.flow.ScopedModuleDriver.start(ScopedModuleDriver.java:200)
at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:117)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:60)
at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:27)
at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:635)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:212)
at weblogic.application.internal.SingleModuleDeployment.activate(SingleModuleDeployment.java:16)
at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:162)
at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:79)
at weblogic.deploy.internal.targetserver.BasicDeployment.activate(BasicDeployment.java:184)
at weblogic.deploy.internal.targetserver.BasicDeployment.activateFromServerLifecycle(BasicDeployment.java:361)
at weblogic.management.deploy.internal.DeploymentAdapter$1.doActivate(DeploymentAdapter.java:51)
at weblogic.management.deploy.internal.DeploymentAdapter.activate(DeploymentAdapter.java:196)
at weblogic.management.deploy.internal.AppTransition$2.transitionApp(AppTransition.java:30)
at weblogic.management.deploy.internal.ConfiguredDeployments.transitionApps(ConfiguredDeployments.java:233)
at weblogic.management.deploy.internal.ConfiguredDeployments.activate(ConfiguredDeployments.java:169)
at weblogic.management.deploy.internal.ConfiguredDeployments.deploy(ConfiguredDeployments.java:123)
at weblogic.management.deploy.internal.DeploymentServerService.resume(DeploymentServerService.java:173)
at weblogic.management.deploy.internal.DeploymentServerService.start(DeploymentServerService.java:89)
at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.String
at org.springframework.beans.factory.support.AbstractBeanDefinition.getBeanClassName(AbstractBeanDefinition.java:364)
at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:377)
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1135)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:522)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1174)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:754)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:422)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
at weblogic.servlet.internal.EventsManager$FireContextListenerAction.run(EventsManager.java:465)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(Unknown Source)
at weblogic.servlet.internal.EventsManager.notifyContextCreatedEvent(EventsManager.java:175)
at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1784)
at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:2999)
at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1371)
at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:468)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:60)
at weblogic.application.internal.flow.ScopedModuleDriver.start(ScopedModuleDriver.java:200)
at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:117)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:60)
at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:27)
at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:635)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:212)
at weblogic.application.internal.SingleModuleDeployment.activate(SingleModuleDeployment.java:16)
at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:162)
at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:79)
at weblogic.deploy.internal.targetserver.BasicDeployment.activate(BasicDeployment.java:184)
at weblogic.deploy.internal.targetserver.BasicDeployment.activateFromServerLifecycle(BasicDeployment.java:361)
at weblogic.management.deploy.internal.DeploymentAdapter$1.doActivate(DeploymentAdapter.java:51)
at weblogic.management.deploy.internal.DeploymentAdapter.activate(DeploymentAdapter.java:196)
at weblogic.management.deploy.internal.AppTransition$2.transitionApp(AppTransition.java:30)
at weblogic.management.deploy.internal.ConfiguredDeployments.transitionApps(ConfiguredDeployments.java:233)
at weblogic.management.deploy.internal.ConfiguredDeployments.activate(ConfiguredDeployments.java:169)
at weblogic.management.deploy.internal.ConfiguredDeployments.deploy(ConfiguredDeployments.java:123)
at weblogic.management.deploy.internal.DeploymentServerService.resume(DeploymentServerService.java:173)
at weblogic.management.deploy.internal.DeploymentServerService.start(DeploymentServerService.java:89)
at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
>
####<Sep 26, 2011 8:53:36 PM EDT> <Info> <Deployer> <srmprod> <SRM_MT_SRMPROD_7003> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1317084816612> <BEA-149059> <Module rbacx of application rbacx is transitioning from STATE_PREPARED to STATE_NEW on server SRM_MT_SRMPROD_7003.>
####<Sep 26, 2011 8:53:36 PM EDT> <Info> <Deployer> <srmprod> <SRM_MT_SRMPROD_7003> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1317084816612> <BEA-149060> <Module rbacx of application rbacx successfully transitioned from STATE_PREPARED to STATE_NEW on server SRM_MT_SRMPROD_7003.>Thiago, Thanks for your response.
For your 1st answer - this application is in production for couple of years and we are seeing this error only for past few days. do you still think it might be a deployment issue.
For your 2nd Ans: this seems to be related to our env. can you give some more details on this as to what exactly needs to be done. sorry I've not worked much on WebLogic.
Below is the exception stack trace i got from stdout log, please see if you get any clue out of this. this seems to be some class loader issue but i don't know the fix. I have also seen in different forums that this might be a defect in Quartz Scheduler. We are getting a NoClassDefFoundError but the specified class file is in WEB-INF\lib dir, and also the missing class file name in the error is different when each time this error occurs, in the sense, this time the error is com.vaau.rbacx.scheduling.executor.rme.RoleStatusAndMembershipMaintenanceJobExecutor not found and when we restarted the server next time it gives org/springframework/orm/ibatis/SqlMapClientTemplate$10 is not found and so on.
Exception in thread "QuartzScheduler_Worker-2" java.lang.NoClassDefFoundError: com/vaau/rbacx/scheduling/executor/rme/RoleStatusAndMembershipMaintenanceJobExecutor
at com.vaau.rbacx.scheduling.manager.providers.quartz.jobs.RoleStatusAndMembershipMaintenanceJob.getJobExecutor(RoleStatusAndMembershipMaintenanceJob.java:16)
at com.vaau.rbacx.scheduling.manager.providers.quartz.jobs.AbstractQuartzJob.execute(AbstractQuartzJob.java:50)
at org.quartz.core.JobRunShell.run(JobRunShell.java:203)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520)
Caused by: java.lang.ClassNotFoundException: com.vaau.rbacx.scheduling.executor.rme.RoleStatusAndMembershipMaintenanceJobExecutor
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:283)
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:256)
at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:54)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:176)
at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:35)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
... 4 more
Exception in thread "QuartzScheduler_Worker-3" java.lang.NoClassDefFoundError: com/vaau/rbacx/scheduling/executor/workflow/WorkflowSLAJobExecutor
at com.vaau.rbacx.scheduling.manager.providers.quartz.jobs.WorkflowStepSLAJob.getJobExecutor(WorkflowStepSLAJob.java:17)
at com.vaau.rbacx.scheduling.manager.providers.quartz.jobs.AbstractQuartzJob.execute(AbstractQuartzJob.java:50)
at org.quartz.core.JobRunShell.run(JobRunShell.java:203)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520)
Caused by: java.lang.ClassNotFoundException: com.vaau.rbacx.scheduling.executor.workflow.WorkflowSLAJobExecutor
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:283)
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:256)
at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:54)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:176)
at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:35)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
... 4 more
Exception in thread "QuartzScheduler_Worker-0" java.lang.NoClassDefFoundError: com/vaau/rbacx/scheduling/executor/workflow/WorkflowSLAJobExecutor
at com.vaau.rbacx.scheduling.manager.providers.quartz.jobs.WorkflowStepSLAJob.getJobExecutor(WorkflowStepSLAJob.java:17)
at com.vaau.rbacx.scheduling.manager.providers.quartz.jobs.AbstractQuartzJob.execute(AbstractQuartzJob.java:50)
at org.quartz.core.JobRunShell.run(JobRunShell.java:203)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520)
Exception in thread "QuartzScheduler_Worker-1" java.lang.NoClassDefFoundError: com/vaau/rbacx/scheduling/executor/workflow/WorkflowSLAJobExecutor
at com.vaau.rbacx.scheduling.manager.providers.quartz.jobs.WorkflowStepSLAJob.getJobExecutor(WorkflowStepSLAJob.java:17)
at com.vaau.rbacx.scheduling.manager.providers.quartz.jobs.AbstractQuartzJob.execute(AbstractQuartzJob.java:50)
at org.quartz.core.JobRunShell.run(JobRunShell.java:203)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520)
Exception in thread "QuartzScheduler_Worker-4" java.lang.NoClassDefFoundError: com/vaau/rbacx/scheduling/executor/rme/RoleStatusAndMembershipMaintenanceJobExecutor
at com.vaau.rbacx.scheduling.manager.providers.quartz.jobs.RoleStatusAndMembershipMaintenanceJob.getJobExecutor(RoleStatusAndMembershipMaintenanceJob.java:16)
at com.vaau.rbacx.scheduling.manager.providers.quartz.jobs.AbstractQuartzJob.execute(AbstractQuartzJob.java:50)
at org.quartz.core.JobRunShell.run(JobRunShell.java:203)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520) -
public class GenericHibernateDAO<T,ID extends Serializable> implements GenericoDAO<T,ID> {
private Class<T> persistentClass;
private Session session;
public GenericHibernateDAO() {
this.persistentClass = (Class<T> ) ((ParameterizedType) getClass()
.getGenericSuperclass()).getActualTypeArguments()[0];
}I've found this surfing hibernate documentation.. I've tried to use it but it doesn't work!! Here is the error message..
Exception in thread "main" java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.reflect.ParameterizedTypeI really don't know how to solve the problem as I never worked with Reflection
please, help me!! Thank youwell... I've found the error...
reflection on generic parameters can happen only if you define parameters types at compile time...
so... I've made the GenericHibernateDAO abstract and for each entity I've defined a subclass like this:
public class ArticoloHibernateDAO extends GenericHibernateDAO<ArticoloComponent,Integer>now it works perfectly!! -
Searching problems when implementing my own repository manager
Hi there,
i've serious problems to get the search fuctionality for my own repository manager running. I'm using the 'new', Netweaver-based api.
Always if I'm launching a search I receive a ClassNotFoundException in the follwing context:
#1.5#172.16.17.102:7CF6B6:FF73BDDB07:-36E7#1097161124650#com.sapportals.wcm.WcmException#irj#com.sapportals.wcm.WcmException.WcmException(118)#System#0#####System_Thread_37##0#0#Error##Plain###invalid manager class: com.sapportals.wcm.repository.runtime.ManagerAdapter java.lang.ClassCastException: invalid manager class: com.sapportals.wcm.repository.runtime.ManagerAdapter
at com.sapportals.wcm.repository.RMAdapter.<init>(RMAdapter.java:48)
at com.sapportals.wcm.repository.runtime.CmSystem.getResourcesImpl(CmSystem.java:1134)
at com.sapportals.wcm.repository.runtime.CmSystem.getResources(CmSystem.java:356)
at com.sapportals.wcm.repository.runtime.CmAdapter.getResources(CmAdapter.java:153)
at com.sapportals.wcm.service.indexmanagement.retrieval.trex.TrexSearchIndexCollection.getSearchResults(TrexSearchIndexCollection.java:1126)
at com.sapportals.wcm.service.indexmanagement.retrieval.search.SearchSession.getSearchResults(SearchSession.java:293)
at com.sapportals.wcm.service.indexmanagement.retrieval.search.FederatedSearchSession.getSearchResults(FederatedSearchSession.java:111)
at com.sapportals.wcm.rendering.collection.SearchRendererStatus.refresh(SearchRendererStatus.java:180)
at com.sapportals.wcm.rendering.collection.LightCollectionRenderer.createStatus(LightCollectionRenderer.java:718)
at com.sapportals.wcm.rendering.collection.LightCollectionRenderer.renderAll(LightCollectionRenderer.java:498)
at com.sapportals.wcm.rendering.control.cm.NeutralControl.render(NeutralControl.java:141)
at com.sapportals.wcm.rendering.layout.cm.SimpleLayoutController.render(SimpleLayoutController.java:39)
at com.sapportals.wcm.rendering.control.cm.WdfProxy.render(WdfProxy.java:1229)
at com.sapportals.wdf.layout.HorizontalLayout.renderControls(HorizontalLayout.java:41)
at com.sapportals.wdf.stack.Pane.render(Pane.java:153)
at com.sapportals.wdf.stack.PaneStack.render(PaneStack.java:67)
at com.sapportals.wdf.layout.HorizontalLayout.renderPanes(HorizontalLayout.java:64)
at com.sapportals.wdf.stack.Pane.render(Pane.java:156)
at com.sapportals.wdf.stack.PaneStack.render(PaneStack.java:67)
at com.sapportals.wdf.layout.HorizontalLayout.renderPanes(HorizontalLayout.java:64)
at com.sapportals.wdf.stack.Pane.render(Pane.java:156)
at com.sapportals.wdf.stack.PaneStack.render(PaneStack.java:67)
at com.sapportals.wdf.layout.HorizontalLayout.renderPanes(HorizontalLayout.java:64)
at com.sapportals.wdf.stack.Pane.render(Pane.java:156)
at com.sapportals.wdf.stack.PaneStack.render(PaneStack.java:67)
at com.sapportals.wdf.ControllerDynPage.executeEvent(ControllerDynPage.java:338)
at com.sapportals.wdf.BaseDynPage.onWdfEvent(BaseDynPage.java:132)
at java.lang.reflect.Method.invoke(Native Method)
at com.sapportals.htmlb.page.DynPage.doProcessCurrentEvent(DynPage.java:172)
at com.sapportals.htmlb.page.PageProcessor.handleRequest(PageProcessor.java:101)
at com.sapportals.htmlb.page.PageProcessorServlet.handleRequest(PageProcessorServlet.java:64)
at com.sapportals.htmlb.page.PageProcessorServlet.doPost(PageProcessorServlet.java:25)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sapportals.wcm.app.servlet.WcmHtmlbBaseServlet.service(WcmHtmlbBaseServlet.java:81)
at com.sapportals.wcm.portal.proxy.PCProxyServlet.service(PCProxyServlet.java:280)
at com.sapportals.portal.prt.core.broker.ServletComponentItem$ServletWrapperComponent.doContent(ServletComponentItem.java:110)
at com.sapportals.portal.prt.component.AbstractPortalComponent.serviceDeprecated(AbstractPortalComponent.java:209)
at com.sapportals.portal.prt.component.AbstractPortalComponent.service(AbstractPortalComponent.java:114)
at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:301)
at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:143)
at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:195)
at com.sapportals.portal.prt.component.PortalComponentResponse.include(PortalComponentResponse.java:209)
at com.sapportals.portal.prt.pom.PortalNode.service(PortalNode.java:589)
at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:301)
at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:143)
at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:195)
at com.sapportals.portal.prt.core.PortalRequestManager.runRequestCycle(PortalRequestManager.java:636)
at com.sapportals.portal.prt.connection.ServletConnection.handleRequest(ServletConnection.java:209)
at com.sapportals.portal.prt.dispatcher.Dispatcher$doService.run(Dispatcher.java:532)
at java.security.AccessController.doPrivileged(Native Method)
at com.sapportals.portal.prt.dispatcher.Dispatcher.service(Dispatcher.java:415)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.inqmy.services.servlets_jsp.server.InvokerServlet.service(InvokerServlet.java:126)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.inqmy.services.servlets_jsp.server.RunServlet.runSerlvet(RunServlet.java:147)
at com.inqmy.services.servlets_jsp.server.ServletsAndJspImpl.startServlet(ServletsAndJspImpl.java:789)
at com.inqmy.services.httpserver.server.RequestAnalizer.checkFilename(RequestAnalizer.java:644)
at com.inqmy.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:305)
at com.inqmy.services.httpserver.server.Response.handle(Response.java:165)
at com.inqmy.services.httpserver.server.HttpServerFrame.request(HttpServerFrame.java:1133)
at com.inqmy.core.service.context.container.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:36)
at com.inqmy.core.cluster.impl0.ParserRunner.run(ParserRunner.java:35)
at com.inqmy.core.thread.impl0.ActionObject.run(ActionObject.java:46)
at java.security.AccessController.doPrivileged(Native Method)
at com.inqmy.core.thread.impl0.SingleThread.run(SingleThread.java:132)
I'm using EP 6.0 SP2 directly installed from the CD
#51 020 549 without explicit installation of any patch or hotfix; the portal itself shows the version number 6.0.2.0.0 (implementation version 6.2.0.0.200310100950).
I switched on logging but I never reached the INamespaceManager's methods isQueryPropertyNameUnderstood() or getQueryBuilder().
So I figure that this might a problem of my (too old?) unpatched version of EP6????
What can I do to get the serach func running?
Thanks for your support,
DanielHi Karsten,
thanks for your annotation.
Does it mean that I <b>HAVE TO</b> apply at least Patch 4
to get the search working or <b>SHOULD</b> I apply the patch to be up-to-date and look for an error in my code???
Thanx a lot,
best regards,
Daniel -
SerialOracleClob usage in weblogic server 8.1
Hi,
An application is deployed successfully on weblogic 7.0 server but there was a
ClassCastException for SerialOracleClob class when the same was deployed on 8.1
server.Also when I tried to compile the source code using weblogic.jar of 8.1,i
got the following compilation error which did not occur for 7.1 weblogic jar.
cannot resolve symbol
[javac] symbol : method getAsciiOutputStream ()
[javac] location: class weblogic.jdbc.rmi.SerialOracleClob
[javac] os=oclob.getAsciiOutputStream();
cannot resolve symbol
[javac] symbol : method length ()
[javac] location: class weblogic.jdbc.rmi.SerialOracleClob
[javac] sClobValue=clobTemp.getSubString
(1,(int)clobTemp.length());
cannot resolve symbol
[javac] symbol : method getSubString (int,int)
[javac] location: class weblogic.jdbc.rmi.SerialOracleClob
[javac] sClobValue=clobTemp.getSubString
(1,(int)clobTemp.length());
Where can i find some reference to the usage of SerialOracleClob in 8.1 and what
is the workaround for this problem.
Thanks in advance.
SnehalI would suggest posting this in the jdbc newsgroup.
-- Rob
Snehal wrote:
Hi,
An application is deployed successfully on weblogic 7.0 server but there was a
ClassCastException for SerialOracleClob class when the same was deployed on 8.1
server.Also when I tried to compile the source code using weblogic.jar of 8.1,i
got the following compilation error which did not occur for 7.1 weblogic jar.
cannot resolve symbol
[javac] symbol : method getAsciiOutputStream ()
[javac] location: class weblogic.jdbc.rmi.SerialOracleClob
[javac] os=oclob.getAsciiOutputStream();
cannot resolve symbol
[javac] symbol : method length ()
[javac] location: class weblogic.jdbc.rmi.SerialOracleClob
[javac] sClobValue=clobTemp.getSubString
(1,(int)clobTemp.length());
cannot resolve symbol
[javac] symbol : method getSubString (int,int)
[javac] location: class weblogic.jdbc.rmi.SerialOracleClob
[javac] sClobValue=clobTemp.getSubString
(1,(int)clobTemp.length());
Where can i find some reference to the usage of SerialOracleClob in 8.1 and what
is the workaround for this problem.
Thanks in advance.
Snehal -
Java.lang.thread exception while using Xalan 2.0 in WLS 6.0
Hi, I'm trying to use Xalan 2.0 in a servlet hosted by WLS. Ive
modified Xalan's SimpleTransform sample to be a servlet. I
create a Transformer with the .xsl, then call tranform() to
print the tranformed xml to the response stream. The xml is
tranformed correctly, but it throws a java.lang.thread
exception. The standalone Xalan sample doesn't do this. Anyone
else seen this problem?
Here's the code of interestest, I apologize if its not formatted very well:
public void doGet(HttpServletRequest req, HttpServletResponse res) throws IOException
PrintWriter out = res.getWriter();
res.setContentType("text/html");
out.println("<html><head><title>XalanTest<title></head>");
out.println("<body><h1>XalanTest</h1>");
try{
TransformerFactory tFactory = TransformerFactory.newInstance();
StreamSource ss = new StreamSource("file:\\\\My-path\\birds.xsl");
Transformer transformer = tFactory.newTransformer(ss);
StreamResult SR = new StreamResult(out);
transformer.transform(new StreamSource("file:\\\\My-path\\birds.xml"), SR );
catch(Exception e){
out.println("<p>" + e.toString() + "</p>");
e.printStackTrace(out);
out.println("<p>Exception</p>");
out.println("</body></html>");It also looks like the workaround suggested does not work.
I put the following code as workaround:
response.setContentType("text/html");
response.setHeader ("Pragma", "no-cache");
Transformer transformer;
TransformerFactory factory = TransformerFactory.newInstance();
String stylesheet = "config\\closs\\applications\\webroot\\jsp\\example\\Load2.xsl";
String sourceId = "config\\closs\\applications\\webroot\\jsp\\example\\Load2.xml";
String outputFile = "config\\closs\\applications\\webroot\\jsp\\example\\Load2.html";
String outputDirectFile = "config\\closs\\applications\\webroot\\jsp\\example\\Load2_Direct.html";
try
PrintWriter fout = new PrintWriter (new FileOutputStream (outputFile));
OutputStream os = new ByteArrayOutputStream();
transformer = factory.newTransformer(new StreamSource(stylesheet));
transformer.transform(new StreamSource(sourceId), new StreamResult(outputDirectFile));
transformer.transform(new StreamSource(sourceId), new StreamResult(os));
os.flush ();
os.close();
out.print(os.toString());
fout.print (os.toString ());
fout.flush ();
fout.close ();
catch (Exception e)
// Error Handler
e.printStackTrace();
The two .html files produced look exactly the same, which is good.
However, the screen output to my html browser (Internet Explorer 5.50 sp1) produces
different output.
That is strange, but that shows that this bug does not have a known workaround
"Rabinowitz" <[email protected]> wrote:
>
I have the same problem with java sun xml parser (jaxp 1-1)
It is interesting to know that all this perfectly works under weblogic
5.1, so
I cannot migrate my application to 6.0
So, the functionality of weblogic 6.0 degraded since 5.1.
I cannot buy the explanation that that is not bea's fault, because it
perfectly
worked with the same version of xml parser.
Now, their customer support is saying they have not decided whether this
is a
bug or a feature.
Interesting to know that degradation of functionality could be a feature!
It is now June 21, 3 months since this bug was reported, sp2 was shipped
since
that time, and this bug is still there.
"Chuck H. Zhao" <[email protected]> wrote:
I am having the exact same problem you are having. If we analyze the
stack
trace:
javax.xml.transform.TransformerException: java.lang.Thread
at
org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.j
ava:1212)
at
org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2894)
at java.lang.Thread.run(Thread.java:484)
java.lang.ClassCastException: java.lang.Thread
at
weblogic.servlet.internal.ResponseHeaders.setDateHeader(ResponseHeaders.java
:273)
at
weblogic.servlet.internal.ServletResponseImpl.setDateHeader(ServletResponseI
mpl.java:449)
at
weblogic.servlet.internal.ServletResponseImpl.writeHeaders(ServletResponseIm
pl.java:637)
at
weblogic.servlet.internal.ServletOutputStreamImpl.flush(ServletOutputStreamI
mpl.java:124)
at
weblogic.servlet.internal.WLOutputStreamWriter.flush(WLOutputStreamWriter.ja
va:124)
at java.io.PrintWriter.flush(PrintWriter.java:120)
at
org.apache.xalan.serialize.SerializerToXML.flushWriter(SerializerToXML.java:
1431)
at
org.apache.xalan.serialize.SerializerToXML.endDocument(SerializerToXML.java:
629)
at
org.apache.xalan.transformer.ResultTreeHandler.endDocument(ResultTreeHandler
..java:180)
at
org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.j
ava:1194)
at
org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2894)
at java.lang.Thread.run(Thread.java:484)
What happened is: to support incremental output, Xalan-Java performs
the
transformation in a second thread while building the source tree inthe
main
thread. So Transformer.transform() creates a new thread to run the
transformer.run() method, which will write to weblogic's internal
ServletOutputStreamImpl, and in the end calls flush() on it.
ServletOutputStreamImpl determines that the headers haven't been written
yet, and the headers need to be written before any servlet output, so
it
calls ServletResponseImpl.writeHeaders(), which eventually calls
ResponseHeaders.setDateHeader(). The last method assumes the thread
is
weblogic's internal ExecuteThread and tries to cast the thread as such,
maybe to get the date from it. But the thread is a plain java.lang.Thread
created by xalan, thus we get the java.lang.ClassCastException:
java.lang.Thread
This suggests a second workaround: call ServletResponse.flushBuffer()
before any xalan stuff, which will force the headers to be written in
weblogic's ExecuteThread. The shortcoming of this is that this will
cause
the response to be commited, and if the xalan stuff throws exception
you can
not forward to another page.
Another thing is that xalan should not directly call flush() on
ServletOutputStreamImpl at all. I will report it to xalan and see if
they
consider that a bug. If they fix that then we have a third workaround:
set
the buffer size of ServletResponse big enough to accomodate everything
including the xslt outputs, so the ServletOutput does not need to be
flushed
during xalan code.
I do not consider this problem a weblogic bug, since the servlet container
has to right to expect any thread inside it to be its own. Serlvet2.2
spec
says:
1.2 What is a Servlet Container?
A Servlet Container may place security restrictions on the environment
that
a servlet executes in. In
a Java 2 Platform Standard Edition 1.2 (J2SE) or Java 2 Platform Enterprise
Edition 1.2 (J2EE)
environment, these restrictions should be placed using the permission
architecture defined by Java 2
Platform. For example, high end application servers may limit certain
action, such as the creation of
a Thread object, to insure that other components of the container are
not
negatively impacted.
Weblogic should explicitly warn the developers that creating threads
inside
the servlet container may have adverse effects, the same kind of problem
we
are having. (or maybe they already did somewhere in their documentation?)
On the xalan side, I would suggest them to either give the option to
switch
the two threads, or to give the option to buffer the output and write
it out
in the main thread, which is exactly what you did in your first workaround.
Any comments or thoughts on the subject are welcome.
-- Chuck Zhao
"MK Parini" <[email protected]> wrote in message
news:[email protected]...
I found, what I think to be a bug, and a work-around for it.
When doing an XSLT Transformation, you must specify a StreamResult
to which to write the output. I was doing my transformation in
a
servlet so I was writing my output to the HttpResponse
(The variable res is a javax.servlet.http.HttpServletResponse
object)
StreamResult htmlTarget = new StreamResult(res.getWriter());
If I use this, when I perform the transformation using the TRAX
APIs,
InputStream xslFile = context.getResourceAsStream(fileName);
TransformerFactory tFactory = TransformerFactory.newInstance();
Templates xslTemplates = tFactory.newTemplates(new StreamSource(xslFile));
transformer = xslTemplates.newTransformer();
transformer.transform(xmlSource, htmlTarget);
I receive the ClassCastException from the class
weblogic.servlet.internal.ResponseHeaders.setDateHeader(ResponseHeaders.java
:273),
as seen in my previous posting.
I discovered, if I write my output to a StringBuffer, and then
I write
the StringBuffer to the HttpResponse, I do not get the ClassCastException.
For example,
StringWriter myWriter = new StringWriter(2400);
StreamResult htmlTarget = new StreamResult(myWriter);
<Same transformation code as above>
myWriter.close();
PrintWriter out = res.getWriter();
out.print(myWriter.toString());
Is this a bug in the weblogic internal servlet class or am I just
missing something?
Also, one concern that I have with the workaround is that it might
hurt performance.
Any comments or thoughts on the subject are welcome.
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