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https://issues.apache.org/jira/browse/WICKET-4258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13157050#comment-13157050
]
Sven Meier commented on WICKET-4258:
------------------------------------
When PageView tries to get component data from FeedbackPanel's list items,
these don't have access to their feedback messages because these are already
cleared in the session. Since r1180799 the exception stracktrace is logged,
making this more annoying.
The attached patches makes FeedbackPanel's list item model fail save.
I'm not sure this is the way we want to go though. It seems the item's css
attribute modifier and the label component both keep a hard reference to the
message anyway. If this is intentional, there's no reason why the list item's
model shouldn't do the same.
> DebugBar displays stacktrace with FeedbackPanels
> ------------------------------------------------
>
> Key: WICKET-4258
> URL: https://issues.apache.org/jira/browse/WICKET-4258
> Project: Wicket
> Issue Type: Bug
> Components: wicket-devutils
> Affects Versions: 1.5.3
> Reporter: Juha Syrjälä
> Priority: Minor
> Attachments: WICKET-4258-quickstart.tar.gz, WICKET-4258.patch
>
>
> Clicking Inspector from DebugBar when a FeedbackPanel is displaying a message
> results in this stacktrace in log. Everything seems to work, extra stuff in
> logs is just annoying.
> ERROR - Component - Error while getting default model object
> for Component: [ListItem [Component id = 0, page = com.mycompany.HomePage,
> path = 8:form:feedback:feedbackul:messages:0.ListItem, isVisible = true,
> isVersioned = false], children = [Component id = message]]
> java.lang.IndexOutOfBoundsException: Index: 0
> at java.util.Collections$EmptyList.get(Collections.java:3204)
> at
> org.apache.wicket.markup.html.list.ListItemModel.getObject(ListItemModel.java:58)
> at
> org.apache.wicket.Component.getDefaultModelObject(Component.java:1640)
> at
> org.apache.wicket.Component.getDefaultModelObjectAsString(Component.java:1668)
> at
> org.apache.wicket.markup.html.debug.PageView$4.component(PageView.java:211)
> at
> org.apache.wicket.markup.html.debug.PageView$4.component(PageView.java:184)
> at org.apache.wicket.util.visit.Visits.visitChildren(Visits.java:143)
> at org.apache.wicket.util.visit.Visits.visitChildren(Visits.java:161)
> at org.apache.wicket.util.visit.Visits.visitChildren(Visits.java:161)
> at org.apache.wicket.util.visit.Visits.visitChildren(Visits.java:161)
> at org.apache.wicket.util.visit.Visits.visitChildren(Visits.java:161)
> at org.apache.wicket.util.visit.Visits.visitChildren(Visits.java:122)
> at org.apache.wicket.util.visit.Visits.visitChildren(Visits.java:191)
> at
> org.apache.wicket.MarkupContainer.visitChildren(MarkupContainer.java:923)
> at
> org.apache.wicket.markup.html.debug.PageView.getComponentData(PageView.java:182)
> at
> org.apache.wicket.markup.html.debug.PageView.<init>(PageView.java:130)
> at
> org.apache.wicket.devutils.inspector.InspectorPage.<init>(InspectorPage.java:66)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
> at
> org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:173)
> at
> org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:97)
> at
> org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:47)
> at
> org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:107)
> at
> org.apache.wicket.request.handler.PageProvider.resolvePageInstance(PageProvider.java:264)
> at
> org.apache.wicket.request.handler.PageProvider.getPageInstance(PageProvider.java:165)
> at
> org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78)
> at
> org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:105)
> at
> org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:224)
> at
> org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:167)
> at
> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:750)
> at
> org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
> at
> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:252)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:209)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:280)
> at
> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:162)
> at
> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:218)
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1326)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:479)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:227)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:940)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:409)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:874)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
> at org.eclipse.jetty.server.Server.handle(Server.java:349)
> at
> org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:441)
> at
> org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:904)
> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:565)
> at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:217)
> at
> org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:50)
> at
> org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:245)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)
> at java.lang.Thread.run(Thread.java:722)
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