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https://issues.apache.org/jira/browse/MYFACES-2520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12806310#action_12806310
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Werner Punz edited comment on MYFACES-2520 at 1/29/10 11:33 AM:
----------------------------------------------------------------
Ok the problem here is we basically use an empty proxy here for the request and
response object, because we are outside of any request here.
The problem here probably is that the invoke of the proxy simply does too
much...
or too few, it throws an exception because the class itself is a placeholder...
perfectly viable
but if the system calls something on the request the invoke is automatically
invoked throwing the error.
Both things perfectly viable but both things in combination cause the error.
What we either do is simply to replace the shell causing the error with an
interface implementation
which does nothing
or we cover it from the outside aka HttpServletRequestWrapper.
was (Author: werpu):
Ok the problem here is we basically use an empty proxy here for the request
and response object, because we are outside of any request here.
The problem here probably is that the invoke of the proxy simply does too
much...
or too few, it throws an exception because the class itself is a placeholder...
perfectly viable
but if a user calls something on the request the invoke is automatically
invoked throwing the error.
Both things perfectly viable but both things in combination cause the error.
What we either do is simply to replace the shell causing the error with an
interface implementation
which does nothing
or we cover it from the outside aka HttpServletRequestWrapper.
> UnsupportedOperationException when launching Trinidad 2 w/ MyFaces2 in Jetty
> ----------------------------------------------------------------------------
>
> Key: MYFACES-2520
> URL: https://issues.apache.org/jira/browse/MYFACES-2520
> Project: MyFaces Core
> Issue Type: Bug
> Components: JSR-314
> Affects Versions: 2.0.0-beta-2
> Reporter: Matthias Weßendorf
>
> SEVERE:
> java.lang.UnsupportedOperationException: This request class is an empty
> placeholder
> at
> org.apache.myfaces.application._SystemEventServletRequest$1.invoke(_SystemEventServletRequest.java:56)
> at $Proxy0.getContentType(Unknown Source)
> at
> javax.servlet.ServletRequestWrapper.getContentType(ServletRequestWrapper.java:145)
> at
> org.apache.myfaces.context.servlet.ServletExternalContextImpl.getRequestContentType(ServletExternalContextImpl.java:322)
> at
> org.apache.myfaces.trinidad.util.ExternalContextUtils.getContentType(ExternalContextUtils.java:341)
> at
> org.apache.myfaces.trinidadinternal.share.util.MultipartFormHandler.isMultipartRequest(MultipartFormHandler.java:57)
> at
> org.apache.myfaces.trinidadinternal.config.upload.FileUploadConfiguratorImpl.beginRequest(FileUploadConfiguratorImpl.java:109)
> at
> org.apache.myfaces.trinidadinternal.config.GlobalConfiguratorImpl._startConfiguratorServiceRequest(GlobalConfiguratorImpl.java:532)
> at
> org.apache.myfaces.trinidadinternal.config.GlobalConfiguratorImpl.beginRequest(GlobalConfiguratorImpl.java:211)
> at
> org.apache.myfaces.trinidadinternal.config.GlobalConfiguratorImpl.getExternalContext(GlobalConfiguratorImpl.java:327)
> at
> org.apache.myfaces.trinidadinternal.context.FacesContextFactoryImpl$CacheRenderKit.<init>(FacesContextFactoryImpl.java:90)
> at
> org.apache.myfaces.trinidadinternal.context.FacesContextFactoryImpl.getFacesContext(FacesContextFactoryImpl.java:68)
> at
> org.apache.myfaces.webapp.AbstractFacesInitializer.dispatchInitDestroyEvent(AbstractFacesInitializer.java:140)
> at
> org.apache.myfaces.webapp.AbstractFacesInitializer.initFaces(AbstractFacesInitializer.java:109)
> at
> org.apache.myfaces.webapp.StartupServletContextListener.contextInitialized(StartupServletContextListener.java:155)
> at
> org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:548)
> at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
> at
> org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
> at
> org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
> at
> org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
> at
> org.mortbay.jetty.plugin.Jetty6PluginWebAppContext.doStart(Jetty6PluginWebAppContext.java:115)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
> at
> org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
> at org.mortbay.jetty.Server.doStart(Server.java:224)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.plugin.Jetty6PluginServer.start(Jetty6PluginServer.java:132)
> at
> org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:441)
> at
> org.mortbay.jetty.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:383)
> at
> org.mortbay.jetty.plugin.AbstractJettyRunMojo.execute(AbstractJettyRunMojo.java:210)
> at
> org.mortbay.jetty.plugin.Jetty6RunMojo.execute(Jetty6RunMojo.java:184)
> at
> org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:569)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:539)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
> at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
> at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
> at
> org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
> at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
> at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
> at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
> Jan 29, 2010 11:38:07 AM org.apache.myfaces.webapp.AbstractFacesInitializer
> initFaces
> SEVERE: An error occured while initializing MyFaces: This request class is an
> empty placeholder
> java.lang.UnsupportedOperationException: This request class is an empty
> placeholder
> at
> org.apache.myfaces.application._SystemEventServletRequest$1.invoke(_SystemEventServletRequest.java:56)
> at $Proxy0.getHeader(Unknown Source)
> at
> javax.servlet.http.HttpServletRequestWrapper.getHeader(HttpServletRequestWrapper.java:91)
> at
> org.apache.myfaces.trinidadinternal.context.external.ServletRequestHeaderMap.getAttribute(ServletRequestHeaderMap.java:42)
> at
> org.apache.myfaces.trinidadinternal.context.external.ServletRequestHeaderMap.getAttribute(ServletRequestHeaderMap.java:30)
> at
> org.apache.myfaces.trinidadinternal.context.external.AbstractAttributeMap.get(AbstractAttributeMap.java:73)
> at
> org.apache.myfaces.trinidadinternal.renderkit.core.CoreRenderKit.isAjaxRequest(CoreRenderKit.java:148)
> at
> org.apache.myfaces.trinidadinternal.renderkit.core.CoreRenderKit.isPartialRequest(CoreRenderKit.java:163)
> at
> org.apache.myfaces.trinidadinternal.config.xmlHttp.XmlHttpConfigurator.getExternalContext(XmlHttpConfigurator.java:61)
> at
> org.apache.myfaces.trinidadinternal.config.GlobalConfiguratorImpl.getExternalContext(GlobalConfiguratorImpl.java:351)
> at
> org.apache.myfaces.trinidadinternal.context.FacesContextFactoryImpl$CacheRenderKit.<init>(FacesContextFactoryImpl.java:90)
> at
> org.apache.myfaces.trinidadinternal.context.FacesContextFactoryImpl.getFacesContext(FacesContextFactoryImpl.java:68)
> at
> org.apache.myfaces.webapp.AbstractFacesInitializer.dispatchInitDestroyEvent(AbstractFacesInitializer.java:140)
> at
> org.apache.myfaces.webapp.AbstractFacesInitializer.initFaces(AbstractFacesInitializer.java:109)
> at
> org.apache.myfaces.webapp.StartupServletContextListener.contextInitialized(StartupServletContextListener.java:155)
> at
> org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:548)
> at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
> at
> org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
> at
> org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
> at
> org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
> at
> org.mortbay.jetty.plugin.Jetty6PluginWebAppContext.doStart(Jetty6PluginWebAppContext.java:115)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
> at
> org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
> at org.mortbay.jetty.Server.doStart(Server.java:224)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.plugin.Jetty6PluginServer.start(Jetty6PluginServer.java:132)
> at
> org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:441)
> at
> org.mortbay.jetty.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:383)
> at
> org.mortbay.jetty.plugin.AbstractJettyRunMojo.execute(AbstractJettyRunMojo.java:210)
> at
> org.mortbay.jetty.plugin.Jetty6RunMojo.execute(Jetty6RunMojo.java:184)
> at
> org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:569)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:539)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
> at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
> at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
> at
> org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
> at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
> at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
> at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
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