Hi Harald,
well, the FacesContext is only created in the FacesServlet, and
obviously, in the filter, you are before this creation.
It might be possible to patch the Trinidad-Filter to create a
FacesContext and release it to properly evaluate these properties.
Maybe the Trinidad-Filter could also be prompted to create the
RequestContext later on in the lifecycle.
regards,
Martin
On 1/28/08, Kuhn, Harald <[EMAIL PROTECTED]> wrote:
> Hi to all,
>
> in order to have all debug-relevant settings in one place (web.xml) I tried
> to set <debug-output> via EL.
> Unfortunately this doesn't work.
>
> I always get a NPE on the 1 request (login page) to my webapp.
> Should this scenario be possible? Or, am I doing something wrong?
>
> Thanks for your help.
>
> Harald
>
> web.xml:
> <context-param>
> <param-name>TRINIDAD_DEBUG_OUTPUT</param-name>
> <param-value>true</param-value>
> </context-param>
>
> trinidad-config.xml:
> <debug-output>#{initParam.TRINIDAD_DEBUG_OUTPUT}</debug-output>
>
> Stack-Trace:
> 2008-01-28 11:43:16,687 ERROR
> org.apache.catalina.core.ContainerBase.[Catalina].[xp-lmazf9p.lasg].[/aim].[faces]:
> Servlet.service() for servlet faces threw exception
> java.lang.NullPointerException
> at
> org.apache.myfaces.trinidad.bean.FacesBeanImpl.getProperty(FacesBeanImpl.java:68)
> at
> org.apache.myfaces.trinidadinternal.config.ConfigParser.parseConfigFile(ConfigParser.java:138)
> at
> org.apache.myfaces.trinidadinternal.context.RequestContextFactoryImpl._getBean(RequestContextFactoryImpl.java:71)
> at
> org.apache.myfaces.trinidadinternal.context.RequestContextFactoryImpl.createContext(RequestContextFactoryImpl.java:56)
> at
> org.apache.myfaces.trinidadinternal.config.GlobalConfiguratorImpl._attachRequestContext(GlobalConfiguratorImpl.java:422)
> at
> org.apache.myfaces.trinidadinternal.config.GlobalConfiguratorImpl.beginRequest(GlobalConfiguratorImpl.java:202)
> at
> org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:126)
> at
> org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at com.airplus.aim.webapp.filter.AIMFilter.doFilter(AIMFilter.java:135)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> at
> org.apache.catalina.ha.session.JvmRouteBinderValve.invoke(JvmRouteBinderValve.java:209)
> at
> org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:347)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
> at
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
> at java.lang.Thread.run(Unknown Source)
> 2008-01-28 11:43:17,187 INFO
> org.apache.myfaces.trinidadinternal.application.ViewHandlerImpl: Apache
> Trinidad is running with time-stamp checking enabled. This should not be
> used in a production environment. See the
> org.apache.myfaces.trinidad.CHECK_FILE_MODIFICATION property in
> WEB-INF/web.xml
> 2008-01-28 11:43:17,609 ERROR javax.faces.webapp._ErrorPageWriter: An
> exception occurred
> java.lang.NullPointerException
> at
> org.apache.myfaces.trinidadinternal.renderkit.core.CoreRenderingContext.<init>(CoreRenderingContext.java:77)
> at
> org.apache.myfaces.trinidadinternal.renderkit.core.CoreRenderKit.encodeBegin(CoreRenderKit.java:479)
> at
> org.apache.myfaces.trinidadinternal.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:166)
> at
> org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
> at
> org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
> at javax.faces.webapp.FacesServlet.service(FacesServlet.java:152)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at
> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
> at
> org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:447)
> at
> org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:379)
> at
> org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:292)
> at
> org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:424)
> at
> org.apache.catalina.core.StandardHostValve.throwable(StandardHostValve.java:271)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
> at
> org.apache.catalina.ha.session.JvmRouteBinderValve.invoke(JvmRouteBinderValve.java:209)
> at
> org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:347)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
> at
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
> at java.lang.Thread.run(Unknown Source)
>
> Additional debugging reveilled that FacesContext is null while evaluating
> the EL-expression.
> The NPE occurs at
> org.apache.myfaces.trinidad.bean.FacesBeanImpl.getProperty(PropertyKey key)
> final public Object getProperty(PropertyKey key)
> {
> Object o = getLocalProperty(key);
> if (o != null)
> return o;
>
> // Look for a binding if and only if the key supports bindings
> if (key.getSupportsBinding())
> {
> ValueExpression expression = getValueExpression(key);
> if (expression != null)
> {
> FacesContext context = FacesContext.getCurrentInstance(); // context
> is null here !!!
> return expression.getValue(context.getELContext());
> }
> }
>
> return null;
> }
>
>
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