Any thoughts on why Im seeing two invocations of the renderHead method?
On Wed, Nov 21, 2012 at 12:14 PM, Nick Pratt <nbpr...@gmail.com> wrote: > I've created a custom Behavior, and attached it to a DataTable. > > I'm seeing two invocations per Page load of myBehavior.renderHeader > method, stacks below. > I've confirmed the following: > 1. The containing Panel, and the DataTable are only added and constructed > once. > 2. The hashcode of the Behavior is the same on both invocations > 3. Ive only added the Behavior once, to the DataTable. > > Are the following stacks expected correct processing for Wicket 6.3.0 ? > > > > at com.DataTableBehavior.renderHead(DataTableBehavior.java:39) > at org.apache.wicket.Component.renderHead(Component.java:2700) > at > org.apache.wicket.markup.renderStrategy.ChildFirstHeaderRenderStrategy$1.component(ChildFirstHeaderRenderStrategy.java:85) > at > org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:96) > at > org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87) > at > org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87) > at > org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:51) > at > org.apache.wicket.markup.renderStrategy.ChildFirstHeaderRenderStrategy.renderChildHeaders(ChildFirstHeaderRenderStrategy.java:78) > at > org.apache.wicket.markup.renderStrategy.ChildFirstHeaderRenderStrategy.renderHeader(ChildFirstHeaderRenderStrategy.java:57) > at > org.apache.wicket.markup.html.internal.HtmlHeaderContainer.onComponentTagBody(HtmlHeaderContainer.java:170) > at > org.apache.wicket.markup.html.panel.DefaultMarkupSourcingStrategy.onComponentTagBody(DefaultMarkupSourcingStrategy.java:71) > at > org.apache.wicket.Component.internalRenderComponent(Component.java:2535) > at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1491) > at org.apache.wicket.Component.internalRender(Component.java:2365) > at org.apache.wicket.Component.render(Component.java:2293) > at > org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1388) > at org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1553) > at org.apache.wicket.Page.onRender(Page.java:884) > at org.apache.wicket.markup.html.WebPage.onRender(WebPage.java:142) > at org.apache.wicket.Component.internalRender(Component.java:2365) > @@ at org.apache.wicket.Component.render(Component.java:2293) > at org.apache.wicket.Page.renderPage(Page.java:1021) > at > org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:116) > at > org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:244) > at > org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:165) > at > org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:830) > at > org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64) > at > org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:253) > at > org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:210) > at > org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:281) > at > org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188) > at > org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:245) > at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) > at > org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:147) > at > org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) > at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) > at > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399) > at > org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) > at > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) > at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) > at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450) > at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) > at org.mortbay.jetty.Server.handle(Server.java:326) > at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) > at > org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) > at > org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228) > at > org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) > > ---------- > > at com.DataTableBehavior.renderHead(DataTableBehavior.java:39) > at org.apache.wicket.Component.renderHead(Component.java:2700) > at > org.apache.wicket.markup.renderStrategy.ChildFirstHeaderRenderStrategy$1.component(ChildFirstHeaderRenderStrategy.java:85) > at > org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:96) > at > org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87) > at > org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87) > at > org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:51) > at > org.apache.wicket.markup.renderStrategy.ChildFirstHeaderRenderStrategy.renderChildHeaders(ChildFirstHeaderRenderStrategy.java:78) > at > org.apache.wicket.markup.renderStrategy.ChildFirstHeaderRenderStrategy.renderHeader(ChildFirstHeaderRenderStrategy.java:57) > at > org.apache.wicket.markup.html.WebPage.validateHeaders(WebPage.java:274) > at org.apache.wicket.markup.html.WebPage.onAfterRender(WebPage.java:228) > at org.apache.wicket.Component.afterRender(Component.java:891) > @@ at org.apache.wicket.Component.render(Component.java:2305) > at org.apache.wicket.Page.renderPage(Page.java:1021) > at > org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:116) > at > org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:244) > at > org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:165) > at > org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:830) > at > org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64) > at > org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:253) > at > org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:210) > at > org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:281) > at > org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188) > at > org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:245) > at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) > at > org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:147) > at > org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) > at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) > at > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399) > at > org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) > at > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) > at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) > at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450) > at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) > at org.mortbay.jetty.Server.handle(Server.java:326) > at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) > at > org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) > at > org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228) > at > org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) >
