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
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