Strange, random bsh interpreter error

asked 2009-02-04 16:33:23 +0800

cvarona
554 ● 1 ● 6

Hi,

I've come across a weird error which appears once in a while, rather unexpectedly; it's triggered by pressing a button within a window which is a child to a certain tabpanel. The window and it's contents have been set into the panel via Executions.createComponentsDirectly. The button is bound to an onClick event listeners which detaches the window the button is found in and closes the tab.

The error manifests itself as a popup window complaining about some non-existing 'system' field; this is what I can see in the console I've started the serving hosting the zk application:

bsh.InterpreterError: set: Field access: bsh.ReflectError: No such field: system : at Line: -1 : in file: <Called from J
ava Code> : <Compiled Java Code>

at bsh.Interpreter.setu(Unknown Source)
at bsh.Interpreter.initRootSystemObject(Unknown Source)
at bsh.Interpreter.<init>(Unknown Source)
at bsh.Interpreter.eval(Unknown Source)
at bsh.Interpreter.eval(Unknown Source)
at org.zkoss.zk.scripting.bsh.BSHInterpreter.exec(BSHInterpreter.java:100)
at org.zkoss.zk.scripting.util.GenericInterpreter.interpret(GenericInterpreter.java:292)
at org.zkoss.zk.ui.impl.PageImpl.interpret(PageImpl.java:766)
at org.zkoss.zk.ui.impl.EventProcessor.process0(EventProcessor.java:178)
at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:143)
at org.zkoss.zk.ui.impl.EventProcessingThreadImpl.process0(EventProcessingThreadImpl.java:488)
at org.zkoss.zk.ui.impl.EventProcessingThreadImpl.run(EventProcessingThreadImpl.java:422)

By attaching the netbeans debugger I've been able to obtain the full stack trace:

"25678960@qtp0-8"
org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:1006)
org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.java:480)
org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java:370)
org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.java:379)
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502)
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1124)
org.nanocontainer.nanowar.ServletRequestContainerFilter.doFilter(ServletRequestContainerFilter.java:44)
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1115)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.ui.SessionFixationProtectionFilter.doFilterHttp(SessionFixationProtectionFilter.java:67)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.ui.ExceptionTranslationFilter.doFilterHttp(ExceptionTranslationFilter.java:101)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.providers.anonymous.AnonymousProcessingFilter.doFilterHttp(AnonymousProcessingFilter.java:105)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.ui.rememberme.RememberMeProcessingFilter.doFilterHttp(RememberMeProcessingFilter.java:116)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.wrapper.SecurityContextHolderAwareRequestFilter.doFilterHttp(SecurityContextHolderAwareRequestFilter.java:91)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.ui.basicauth.BasicProcessingFilter.doFilterHttp(BasicProcessingFilter.java:174)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp(AbstractProcessingFilter.java:277)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.ui.logout.LogoutFilter.doFilterHttp(LogoutFilter.java:89)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235)
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:175)
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236)
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1115)
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:361)
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:417)
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
org.mortbay.jetty.Server.handle(Server.java:324)
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534)
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:864)
org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:533)
org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:207)
org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:403)
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:522)

The event triggering the error is usually the 'onFocus' event on the button itself, but it can be an onFocus on an rather unrelated inputbox to be found in the same window as the button as well.

I'm using zk3.5.2 and starting the zk application by the maven jetty plugin 6.1.14; my application is secured by Spring security.

Any suggestion would be much appreciated

With kind regards

César Varona