This usually means either an IContentProvider or IKeyProvider wasn't available during render. You can also try setting nodeLinkAjax parameter to false to see if I've introduced a new bug. Let me know.
jesse On 11/8/05, Inge Solvoll <[EMAIL PROTECTED]> wrote: > I'm trying to use a tacos:Tree component in my page, without luck. I get > the following error when clicking on the plus image, expanding a node: > > Unable to invoke method expansion on > [EMAIL PROTECTED]/$DivisionSelectionTree.tree]: > null > > I've tried switching to the excact same jar-files as the demo > application uses, no difference. > > As you've probably understood, the tree renders correctly at first > showing the root node with a plus-icon next to it. When clicking on the > plus-icon, there is one child node of the root node that should be made > visible. > > I've tried setting breakpoints in my content provider, as well as in the > component containing the tree component, but the page crashes before > these are called. I've also tried to put breakpoints in all methods in > Tree and TreeManager, but none are reached. This usually works for me in > other classes. > > Any ideas? > > Here's the rest of the stack trace: > > > > java.lang.IllegalArgumentException > Stack Trace: > > * net.sf.tacos.tree.TreeManager.<init>(Unknown Source) > * net.sf.tacos.tree.Tree.getManager(Unknown Source) > * net.sf.tacos.tree.Tree.expansion(Unknown Source) > * sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > * > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > * > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > * java.lang.reflect.Method.invoke(Method.java:324) > * > org.apache.tapestry.listener.ListenerMap.invokeTargetMethod(ListenerMap.java:257) > * > org.apache.tapestry.listener.ListenerMap.access$100(ListenerMap.java:46) > * > org.apache.tapestry.listener.ListenerMap$SyntheticListener.invoke(ListenerMap.java:97) > * > org.apache.tapestry.listener.ListenerMap$SyntheticListener.actionTriggered(ListenerMap.java:102) > * org.apache.tapestry.link.DirectLink.trigger(DirectLink.java:119) > * > org.apache.tapestry.engine.DirectService.service(DirectService.java:169) > * > org.apache.tapestry.engine.AbstractEngine.service(AbstractEngine.java:889) > * > org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.java:198) > * > org.apache.tapestry.ApplicationServlet.doGet(ApplicationServlet.java:159) > * javax.servlet.http.HttpServlet.service(HttpServlet.java:689) > * javax.servlet.http.HttpServlet.service(HttpServlet.java:802) > * > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > * > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > * > com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118) > * > com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52) > * > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) > * > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > * > no.dossier.moby.frontend.common.filters.BasicFilter.doFilter(BasicFilter.java:161) > * > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) > * > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > * > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > * > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) > * > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) > * > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > * > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > * > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > * > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856) > * > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744) > * > org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > * > org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > * > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > * java.lang.Thread.run(Thread.java:534) > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
