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Posted to commits@wicket.apache.org by "Andrea Del Bene (JIRA)" <ji...@apache.org> on 2016/04/01 16:36:25 UTC
[jira] [Resolved] (WICKET-6134) NPE when using ListView with
missing markup
[ https://issues.apache.org/jira/browse/WICKET-6134?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrea Del Bene resolved WICKET-6134.
-------------------------------------
Resolution: Fixed
> NPE when using ListView with missing markup
> -------------------------------------------
>
> Key: WICKET-6134
> URL: https://issues.apache.org/jira/browse/WICKET-6134
> Project: Wicket
> Issue Type: Bug
> Affects Versions: 7.2.0
> Reporter: Marc G.
> Assignee: Andrea Del Bene
> Fix For: 7.3.0, 8.0.0-M1
>
> Attachments: myproject.7z
>
>
> Instead of getting the hint that you've added a component and missing the reference in the markup you get an NPE:
> Unexpected RuntimeException
> Last cause: null
> WicketMessage: Error attaching this container for rendering: [Page class = com.mycompany.HomePage, id = 0, render count = 1]
> Stacktrace
> Root cause:
> java.lang.NullPointerException
> at org.apache.wicket.DequeueContext.nextTag(DequeueContext.java:143)
> at org.apache.wicket.DequeueContext.<init>(DequeueContext.java:71)
> at org.apache.wicket.markup.html.list.ListItem.newDequeueContext(ListItem.java:106)
> at org.apache.wicket.MarkupContainer.dequeue(MarkupContainer.java:2029)
> at org.apache.wicket.MarkupContainer.addedComponent(MarkupContainer.java:1049)
> at org.apache.wicket.MarkupContainer.add(MarkupContainer.java:239)
> at org.apache.wicket.markup.html.list.ListView.onPopulate(ListView.java:519)
> at org.apache.wicket.markup.repeater.AbstractRepeater.onBeforeRender(AbstractRepeater.java:124)
> at org.apache.wicket.Component.internalBeforeRender(Component.java:949)
> at org.apache.wicket.Component.beforeRender(Component.java:1017)
> at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1866)
> at org.apache.wicket.Component.onBeforeRender(Component.java:3877)
> at org.apache.wicket.Page.onBeforeRender(Page.java:801)
> at org.apache.wicket.Component.internalBeforeRender(Component.java:949)
> at org.apache.wicket.Component.beforeRender(Component.java:1017)
> at org.apache.wicket.Component.internalPrepareForRender(Component.java:2215)
> at org.apache.wicket.Page.internalPrepareForRender(Page.java:242)
> at org.apache.wicket.Component.render(Component.java:2304)
> at org.apache.wicket.Page.renderPage(Page.java:1018)
> at org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:124)
> at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:236)
> at org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:175)
> at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:895)
> at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
> at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:265)
> at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:222)
> at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:293)
> at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:261)
> at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:203)
> at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:284)
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
> at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
> at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
> at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
> at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
> at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
> at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
> at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
> at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
> at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
> at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
> at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
> at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
> at org.eclipse.jetty.server.Server.handle(Server.java:499)
> at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
> at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
> at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
> at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
> at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
> at java.lang.Thread.run(Thread.java:745)
> Complete stack:
> org.apache.wicket.WicketRuntimeException: Error attaching this container for rendering: [Page class = com.mycompany.HomePage, id = 0, render count = 1]
> at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1878)
> at org.apache.wicket.Component.onBeforeRender(Component.java:3877)
> at org.apache.wicket.Page.onBeforeRender(Page.java:801)
> at org.apache.wicket.Component.internalBeforeRender(Component.java:949)
> at org.apache.wicket.Component.beforeRender(Component.java:1017)
> at org.apache.wicket.Component.internalPrepareForRender(Component.java:2215)
> at org.apache.wicket.Page.internalPrepareForRender(Page.java:242)
> at org.apache.wicket.Component.render(Component.java:2304)
> at org.apache.wicket.Page.renderPage(Page.java:1018)
> at org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:124)
> at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:236)
> at org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:175)
> at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:895)
> at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
> at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:265)
> at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:222)
> at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:293)
> at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:261)
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