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https://issues.apache.org/jira/browse/TAPESTRY-1281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12474809
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Boris Terzic commented on TAPESTRY-1281:
----------------------------------------
Apologies, I'm an idiot. Sorry for wasting your time. I had been reading about
@ApplicationState and wanted to annotate that property as such knowing that on
first access a default instance would be created. Obviously I didn't.
> NullPointerException in page rendering
> --------------------------------------
>
> Key: TAPESTRY-1281
> URL: https://issues.apache.org/jira/browse/TAPESTRY-1281
> Project: Tapestry
> Issue Type: Bug
> Components: Core
> Affects Versions: 5.0
> Environment: Ubuntu 6.10, kernel 2.6.17-11, Running in Eclipse with
> Jetty Launcher and Jetty 5.1.12
> Reporter: Boris Terzic
> Assigned To: Howard M. Lewis Ship
> Attachments: tapestry-npe-project-20070219.zip
>
>
> The first page I try to create starting from a modified tutorial example
> yields a NullPointerException when Tapestry attempts to render, here is the
> stacktrace, I will attach an archive of the actual project since it's so
> small:
> ---
> 20:08:46.799 INFO [main] org.mortbay.log.LogImpl.add(LogImpl.java:109) >16>
> added [EMAIL PROTECTED]
> 20:08:46.752 INFO [main] org.mortbay.log.LogImpl.reset(LogImpl.java:228)
> >11> reset
> 20:08:46.805 INFO [main] org.mortbay.log.LogImpl.add(LogImpl.java:109) >11>
> added [EMAIL PROTECTED]
> 20:08:48.653 INFO [main]
> org.apache.tapestry.TapestryFilter.init(TapestryFilter.java:91) >10> Startup
> time: 453 ms to build IoC Registry, 1,116 ms overall.
> 127.0.0.1 - - [19/Feb/2007:20:08:52 +0100] "GET /panama/ HTTP/1.1" 304 0 "-"
> "Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.1) Gecko/20060601
> Firefox/2.0.0.1 (Ubuntu-edgy)" -
> 20:08:57.048 ERROR! [SocketListener0-1]
> org.apache.tapestry.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:66)
> >47> Render queue error in Expansion[PropBinding[expansion
> be.panamasales.reporting.pages.BrandOverview(currentBrand.name)]]:
> java.lang.NullPointerException
> java.lang.NullPointerException
> at $PropBinding_110db67f66a.get($PropBinding_110db67f66a.java)
> at
> org.apache.tapestry.internal.structure.ExpansionPageElement.render(ExpansionPageElement.java:47)
> at
> org.apache.tapestry.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:58)
> at
> org.apache.tapestry.internal.services.PageMarkupRendererImpl.renderPageMarkup(PageMarkupRendererImpl.java:40)
> at
> $PageMarkupRenderer_110db67f672.renderPageMarkup($PageMarkupRenderer_110db67f672.java)
> at
> $PageMarkupRenderer_110db67f66d.renderPageMarkup($PageMarkupRenderer_110db67f66d.java)
> at
> org.apache.tapestry.internal.services.PageResponseRendererImpl.renderPageResponse(PageResponseRendererImpl.java:45)
> at
> $PageResponseRenderer_110db67f66e.renderPageResponse($PageResponseRenderer_110db67f66e.java)
> at
> $PageResponseRenderer_110db67f61f.renderPageResponse($PageResponseRenderer_110db67f61f.java)
> at
> org.apache.tapestry.internal.services.PageRenderDispatcher$1.renderPage(PageRenderDispatcher.java:78)
> at
> org.apache.tapestry.internal.services.PageLinkHandlerImpl.handle(PageLinkHandlerImpl.java:54)
> at
> org.apache.tapestry.internal.services.PageLinkHandlerImpl.handle(PageLinkHandlerImpl.java:39)
> at
> $PageLinkHandler_110db67f64e.handle($PageLinkHandler_110db67f64e.java)
> at
> $PageLinkHandler_110db67f64a.handle($PageLinkHandler_110db67f64a.java)
> at
> org.apache.tapestry.internal.services.PageRenderDispatcher.dispatch(PageRenderDispatcher.java:88)
> at $Dispatcher_110db67f64c.dispatch($Dispatcher_110db67f64c.java)
> at $Dispatcher_110db67f64d.dispatch($Dispatcher_110db67f64d.java)
> at $Dispatcher_110db67f639.dispatch($Dispatcher_110db67f639.java)
> at
> org.apache.tapestry.services.TapestryModule$5.service(TapestryModule.java:407)
> at
> org.apache.tapestry.services.TapestryModule$6.service(TapestryModule.java:440)
> at $RequestHandler_110db67f63a.service($RequestHandler_110db67f63a.java)
> at
> org.apache.tapestry.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:49)
> at $RequestHandler_110db67f63a.service($RequestHandler_110db67f63a.java)
> at
> org.apache.tapestry.internal.services.LocalizationFilter.service(LocalizationFilter.java:43)
> at $RequestHandler_110db67f63a.service($RequestHandler_110db67f63a.java)
> at
> org.apache.tapestry.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:91)
> at
> org.apache.tapestry.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:82)
> at
> org.apache.tapestry.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:77)
> at
> org.apache.tapestry.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:104)
> at $RequestHandler_110db67f63a.service($RequestHandler_110db67f63a.java)
> at $RequestHandler_110db67f63b.service($RequestHandler_110db67f63b.java)
> at $RequestHandler_110db67f632.service($RequestHandler_110db67f632.java)
> at
> org.apache.tapestry.services.TapestryModule$3.service(TapestryModule.java:330)
> at
> $HttpServletRequestHandler_110db67f633.service($HttpServletRequestHandler_110db67f633.java)
> at
> $HttpServletRequestHandler_110db67f631.service($HttpServletRequestHandler_110db67f631.java)
> at org.apache.tapestry.TapestryFilter.doFilter(TapestryFilter.java:114)
> at
> org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:821)
> at
> org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:471)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:568)
> at org.mortbay.http.HttpContext.handle(HttpContext.java:1530)
> at
> org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:633)
> at org.mortbay.http.HttpContext.handle(HttpContext.java:1482)
> at org.mortbay.http.HttpServer.service(HttpServer.java:909)
> at org.mortbay.http.HttpConnection.service(HttpConnection.java:820)
> at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:986)
> at org.mortbay.http.HttpConnection.handle(HttpConnection.java:837)
> at
> org.mortbay.http.SocketListener.handleConnection(SocketListener.java:245)
> at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
> at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)
> 20:08:57.958 ERROR! [SocketListener0-1]
> org.apache.tapestry.internal.services.PagePoolImpl.release(PagePoolImpl.java:76)
> >20> Page Page[be.panamasales.reporting.pages.BrandOverview en] is dirty,
> and will be discarded (rather than returned to the page pool).
> 127.0.0.1 - - [19/Feb/2007:20:08:55 +0100] "GET /panama/brandoverview
> HTTP/1.1" 200 10101 "http://localhost:8080/panama/"; "Mozilla/5.0 (X11; U;
> Linux i686; en-US; rv:1.8.1.1) Gecko/20060601 Firefox/2.0.0.1 (Ubuntu-edgy)" -
> ---
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