Thank you Andreas. I thought omitting transient means they will be serialized (and cause serialization problems), so @PaxWicketBean replaces the serialization mechanism with injection?
Thank you again :) Hendy On Wed, Nov 14, 2012 at 4:15 AM, Andreas Pieber <anpie...@gmail.com> wrote: > Hey, > > The problem is transient. @PaxWicketBeans are never serialized, but always > retrieved a new. Please try to remove transient; this should do the trick. > > Kind regards, > Andreas > > > On Tue, Nov 13, 2012 at 2:42 PM, Hendy Irawan <he...@soluvas.com> wrote: > >> Hi all, >> >> My code is : >> >> @PaxWicketBean(name="bannersSupplier") >> private transient Supplier<BannerCollection> bannersSupplier; >> >> On first request it's OK, but on "second" request (i.e. going to another >> page and going back so now it has ?0 on the URI), it seems that the field >> is now null. >> >> bannersSupplier come from the Blueprint instance. >> >> This issue is always reproducible. Am I using @PaxWicketBean wrong? >> >> Thank you. >> >> java.lang.NullPointerException: bannersSupplier cannot be null >> at >> com.google.common.base.Preconditions.checkNotNull(Preconditions.java:208) >> at id.co.bippo.web.pub.HomePage$BannerListModel.load(HomePage.java:59) >> >> >> at id.co.bippo.web.pub.HomePage$BannerListModel.load(HomePage.java:1) >> at >> org.apache.wicket.model.LoadableDetachableModel.getObject(LoadableDetachableModel.java:119) >> at >> org.apache.wicket.Component.getDefaultModelObject(Component.java:1674) >> >> >> at >> org.apache.wicket.markup.html.list.ListView.getViewSize(ListView.java:219) >> at >> org.apache.wicket.markup.html.list.ListView.onPopulate(ListView.java:473) >> at >> org.apache.wicket.markup.repeater.AbstractRepeater.onBeforeRender(AbstractRepeater.java:119) >> >> >> at org.apache.wicket.Component.internalBeforeRender(Component.java:994) >> at org.apache.wicket.Component.beforeRender(Component.java:1028) >> at >> org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1743) >> >> >> at org.apache.wicket.Component.onBeforeRender(Component.java:3859) >> at org.apache.wicket.Component.internalBeforeRender(Component.java:994) >> at org.apache.wicket.Component.beforeRender(Component.java:1028) >> >> >> at >> org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1743) >> at org.apache.wicket.Component.onBeforeRender(Component.java:3859) >> at org.apache.wicket.Page.onBeforeRender(Page.java:826) >> >> >> at >> org.soluvas.web.site.MultitenantPage.onBeforeRender(MultitenantPage.java:56) >> at org.apache.wicket.Component.internalBeforeRender(Component.java:994) >> at org.apache.wicket.Component.beforeRender(Component.java:1028) >> >> >> at >> org.apache.wicket.Component.internalPrepareForRender(Component.java:2229) >> at org.apache.wicket.Page.internalPrepareForRender(Page.java:279) >> at org.apache.wicket.Component.render(Component.java:2313) >> >> >> at org.apache.wicket.Page.renderPage(Page.java:1035) >> at >> org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:115) >> at >> org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:195) >> >> >> at >> org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:167) >> at >> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:784) >> at >> org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64) >> >> >> at >> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:255) >> at >> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:212) >> at >> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:283) >> >> >> at >> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188) >> at >> org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:137) >> at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) >> >> >> at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) >> at >> org.ops4j.pax.wicket.internal.FilterDelegator$Chain.doFilter(FilterDelegator.java:79) >> at >> org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) >> >> >> at >> org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) >> at >> org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) >> at >> org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) >> >> >> at >> org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) >> at >> org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) >> at >> org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) >> >> >> at >> org.ops4j.pax.wicket.internal.FilterDelegator$Chain.doFilter(FilterDelegator.java:77) >> at >> org.ops4j.pax.wicket.internal.FilterDelegator.doFilter(FilterDelegator.java:61) >> at >> org.ops4j.pax.wicket.internal.ServletProxy$ServletInvocationHandler.invoke(ServletProxy.java:72) >> >> >> at $Proxy16.service(Unknown Source) >> at java.lang.reflect.Method.invoke(Method.java:601) >> at >> org.ops4j.pax.web.service.internal.HttpServiceStarted$2.invoke(HttpServiceStarted.java:210) >> at org.ops4j.pax.web.service.internal.$Proxy0.service(Unknown Source) >> >> >> at >> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:652) >> at >> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:447) >> at >> org.ops4j.pax.web.service.jetty.internal.HttpServiceServletHandler.doHandle(HttpServiceServletHandler.java:70) >> >> >> at >> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) >> at >> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:559) >> at >> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:227) >> >> >> at >> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1038) >> at >> org.ops4j.pax.web.service.jetty.internal.HttpServiceContext.doHandle(HttpServiceContext.java:117) >> at >> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:374) >> >> >> at >> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:189) >> at >> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:972) >> at >> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) >> >> >> at >> org.ops4j.pax.web.service.jetty.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:74) >> at >> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) >> at org.eclipse.jetty.server.Server.handle(Server.java:363) >> >> >> at >> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:483) >> at >> org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53) >> at >> org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:920) >> >> >> at >> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:982) >> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:635) >> at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235) >> >> >> at >> org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72) >> at >> org.eclipse.jetty.server.nio.BlockingChannelConnector$BlockingChannelEndPoint.run(BlockingChannelConnector.java:298) >> >> >> at >> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) >> at >> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) >> at java.lang.Thread.run(Thread.java:722) >> >> Complete stack: >> >> org.apache.wicket.WicketRuntimeException: Error attaching this container for >> rendering: [BannerCarousel [Component id = afterHeader]] >> at >> org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1755) >> >> >> at org.apache.wicket.Component.onBeforeRender(Component.java:3859) >> at org.apache.wicket.Component.internalBeforeRender(Component.java:994) >> at org.apache.wicket.Component.beforeRender(Component.java:1028) >> >> >> at >> org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1743) >> at org.apache.wicket.Component.onBeforeRender(Component.java:3859) >> at org.apache.wicket.Page.onBeforeRender(Page.java:826) >> >> >> at >> org.soluvas.web.site.MultitenantPage.onBeforeRender(MultitenantPage.java:56) >> at org.apache.wicket.Component.internalBeforeRender(Component.java:994) >> at org.apache.wicket.Component.beforeRender(Component.java:1028) >> >> >> at >> org.apache.wicket.Component.internalPrepareForRender(Component.java:2229) >> at org.apache.wicket.Page.internalPrepareForRender(Page.java:279) >> at org.apache.wicket.Component.render(Component.java:2313) >> >> >> at org.apache.wicket.Page.renderPage(Page.java:1035) >> at >> org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:115) >> at >> org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:195) >> >> >> at >> org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:167) >> at >> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:784) >> at >> org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64) >> >> >> at >> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:255) >> at >> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:212) >> at >> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:283) >> >> >> at >> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188) >> >> java.lang.RuntimeException: An error occurred while getting the model object >> for Component: [ [Component id = banner, page = >> id.co.bippo.web.pub.HomePage, path = 0:afterHeader:banner.BannerCarousel$1, >> isVisible = true, isVersioned = true], children = [ListItem [Component id = >> 0]] [ListItem [Component id = 1]] [ListItem [Component id = 2]]] >> >> >> at >> org.apache.wicket.Component.getDefaultModelObject(Component.java:1679) >> at >> org.apache.wicket.markup.html.list.ListView.getViewSize(ListView.java:219) >> at >> org.apache.wicket.markup.html.list.ListView.onPopulate(ListView.java:473) >> >> >> at >> org.apache.wicket.markup.repeater.AbstractRepeater.onBeforeRender(AbstractRepeater.java:119) >> at org.apache.wicket.Component.internalBeforeRender(Component.java:994) >> at org.apache.wicket.Component.beforeRender(Component.java:1028) >> >> >> at >> org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1743) >> at org.apache.wicket.Component.onBeforeRender(Component.java:3859) >> at org.apache.wicket.Component.internalBeforeRender(Component.java:994) >> >> >> at org.apache.wicket.Component.beforeRender(Component.java:1028) >> at >> org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1743) >> at org.apache.wicket.Component.onBeforeRender(Component.java:3859) >> >> >> at org.apache.wicket.Page.onBeforeRender(Page.java:826) >> at >> org.soluvas.web.site.MultitenantPage.onBeforeRender(MultitenantPage.java:56) >> at org.apache.wicket.Component.internalBeforeRender(Component.java:994) >> >> >> at org.apache.wicket.Component.beforeRender(Component.java:1028) >> at >> org.apache.wicket.Component.internalPrepareForRender(Component.java:2229) >> at org.apache.wicket.Page.internalPrepareForRender(Page.java:279) >> >> >> at org.apache.wicket.Component.render(Component.java:2313) >> at org.apache.wicket.Page.renderPage(Page.java:1035) >> at >> org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:115) >> >> >> at >> org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:195) >> at >> org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:167) >> at >> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:784) >> >> >> at >> org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64) >> at >> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:255) >> at >> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:212) >> >> >> at >> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:283) >> at >> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188) >> >> >> -- >> Hendy Irawan - on Twitter <http://twitter.com/hendybippo> - on >> LinkedIn<http://id.linkedin.com/in/hendyirawan> >> Web Developer | Bippo Indonesia <http://www.bippo.co.id/> | Akselerator >> Bisnis | Bandung >> >> >> _______________________________________________ >> general mailing list >> general@lists.ops4j.org >> http://lists.ops4j.org/mailman/listinfo/general >> >> > > _______________________________________________ > general mailing list > general@lists.ops4j.org > http://lists.ops4j.org/mailman/listinfo/general > > -- Hendy Irawan - on Twitter <http://twitter.com/hendybippo> - on LinkedIn<http://id.linkedin.com/in/hendyirawan> Web Developer | Bippo Indonesia <http://www.bippo.co.id/> | Akselerator Bisnis | Bandung
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