[ http://issues.apache.org/jira/browse/TAPESTRY-696?page=all ]
Howard M. Lewis Ship closed TAPESTRY-696:
-----------------------------------------
Fix Version: 4.0
Resolution: Fixed
It's fair to say that you never really know if you've hit all the race
conditions, but I'm very confident that this is a good fix.
> Race condition during page loading can cause anomoylous exceptions related to
> annotations
> -----------------------------------------------------------------------------------------
>
> Key: TAPESTRY-696
> URL: http://issues.apache.org/jira/browse/TAPESTRY-696
> Project: Tapestry
> Type: Bug
> Components: Framework
> Versions: 4.0
> Reporter: Howard M. Lewis Ship
> Assignee: Howard M. Lewis Ship
> Priority: Blocker
> Fix For: 4.0
>
> Been seeing a trickle of thsee on the mailing lists, under load, Tapestry may
> try to enhance the same class twice and the annotations (many of which work
> by modifying the in-memory component specification) cause exceptions as they
> conflict with themselves.
> Error: An error occured processing annotation
> @org.apache.tapestry.annotations.InjectState(value=visit) of public
> abstract com.mcelroy.auth.Visit
> com.mcelroy.auth.component.Border.getVisitObject(): Property visitObject
> has already been accounted for by the element at Annotation
> @org.apache.tapestry.annotations.InjectState(value=visit) of public
> abstract com.mcelroy.auth.Visit
> com.mcelroy.auth.component.Border.getVisitObject().
> Am I doing something wrong here? I can transition from page-to-page
> without any trouble as long as I'm not entering the app through the
> external service.
> In case it's useful, here's the full stack trace:
> *
> org.apache.tapestry.spec.ComponentSpecification.claimProperty(ComponentSpecification.java:674)
> *
> org.apache.tapestry.spec.ComponentSpecification.addInjectSpecification(ComponentSpecification.java:645)
> *
> org.apache.tapestry.annotations.InjectStateAnnotationWorker.performEnhancement(InjectStateAnnotationWorker.java:49)
> *
> org.apache.tapestry.annotations.AnnotationEnhancementWorker.performMethodEnhancement(AnnotationEnhancementWorker.java:125)
> *
> org.apache.tapestry.annotations.AnnotationEnhancementWorker.performMethodEnhancement(AnnotationEnhancementWorker.java:108)
> *
> org.apache.tapestry.annotations.AnnotationEnhancementWorker.performEnhancement(AnnotationEnhancementWorker.java:68)
> *
> $EnhancementWorker_106b7b9f8bb.performEnhancement($EnhancementWorker_106b7b9f8bb.java)
> *
> $EnhancementWorker_106b7b9f8bd.performEnhancement($EnhancementWorker_106b7b9f8bd.java)
> *
> $EnhancementWorker_106b7b9f89d.performEnhancement($EnhancementWorker_106b7b9f89d.java)
> *
> org.apache.tapestry.services.impl.ComponentConstructorFactoryImpl.getComponentConstructor(ComponentConstructorFactoryImpl.java:79)
> *
> $ComponentConstructorFactory_106b7b9f888.getComponentConstructor($ComponentConstructorFactory_106b7b9f888.java)
> *
> org.apache.tapestry.pageload.PageLoader.instantiateComponent(PageLoader.java:565)
> *
> org.apache.tapestry.pageload.PageLoader.createImplicitComponent(PageLoader.java:515)
> *
> $IPageLoader_106b7b9f882.createImplicitComponent($IPageLoader_106b7b9f882.java)
> *
> $IPageLoader_106b7b9f883.createImplicitComponent($IPageLoader_106b7b9f883.java)
> *
> org.apache.tapestry.services.impl.ComponentTemplateLoaderLogic.createImplicitComponent(ComponentTemplateLoaderLogic.java:218)
> *
> org.apache.tapestry.services.impl.ComponentTemplateLoaderLogic.process(ComponentTemplateLoaderLogic.java:172)
> *
> org.apache.tapestry.services.impl.ComponentTemplateLoaderLogic.process(ComponentTemplateLoaderLogic.java:111)
> *
> org.apache.tapestry.services.impl.ComponentTemplateLoaderLogic.loadTemplate(ComponentTemplateLoaderLogic.java:88)
> *
> org.apache.tapestry.services.impl.ComponentTemplateLoaderImpl.loadTemplate(ComponentTemplateLoaderImpl.java:60)
> *
> $ComponentTemplateLoader_106b7b9f88c.loadTemplate($ComponentTemplateLoader_106b7b9f88c.java)
> *
> org.apache.tapestry.pageload.PageLoader.loadTemplateForComponent(PageLoader.java:671)
> * org.apache.tapestry.BaseComponent.readTemplate(BaseComponent.java:77)
> * org.apache.tapestry.BaseComponent.finishLoad(BaseComponent.java:107)
> * $ViewProfile_41.finishLoad($ViewProfile_41.java)
> *
> org.apache.tapestry.pageload.PageLoader.constructComponent(PageLoader.java:473)
> * org.apache.tapestry.pageload.PageLoader.loadPage(PageLoader.java:642)
> * $IPageLoader_106b7b9f882.loadPage($IPageLoader_106b7b9f882.java)
> * $IPageLoader_106b7b9f883.loadPage($IPageLoader_106b7b9f883.java)
> * org.apache.tapestry.pageload.PageSource.getPage(PageSource.java:118)
> * $IPageSource_106b7b9f7ed.getPage($IPageSource_106b7b9f7ed.java)
> *
> org.apache.tapestry.engine.RequestCycle.loadPage(RequestCycle.java:265)
> * org.apache.tapestry.engine.RequestCycle.getPage(RequestCycle.java:248)
> * com.mcelroy.auth.pages.Login.activateExternalPage(Login.java:216)
> *
> org.apache.tapestry.engine.ExternalService.service(ExternalService.java:160)
> * $IEngineService_106b7b9f87a.service($IEngineService_106b7b9f87a.java)
> *
> org.apache.tapestry.services.impl.EngineServiceOuterProxy.service(EngineServiceOuterProxy.java:65)
> *
> org.apache.tapestry.engine.AbstractEngine.service(AbstractEngine.java:248)
> *
> org.apache.tapestry.services.impl.InvokeEngineTerminator.service(InvokeEngineTerminator.java:60)
> *
> $WebRequestServicer_106b7b9f84d.service($WebRequestServicer_106b7b9f84d.java)
> *
> org.apache.tapestry.services.impl.DisableCachingFilter.service(DisableCachingFilter.java:48)
> *
> $WebRequestServicerFilter_106b7b9f84f.service($WebRequestServicerFilter_106b7b9f84f.java)
> *
> $WebRequestServicer_106b7b9f851.service($WebRequestServicer_106b7b9f851.java)
> *
> $WebRequestServicer_106b7b9f849.service($WebRequestServicer_106b7b9f849.java)
> *
> org.apache.tapestry.services.impl.WebRequestServicerPipelineBridge.service(WebRequestServicerPipelineBridge.java:56)
> *
> $ServletRequestServicer_106b7b9f82d.service($ServletRequestServicer_106b7b9f82d.java)
> *
> org.apache.tapestry.request.DecodedRequestInjector.service(DecodedRequestInjector.java:55)
> *
> $ServletRequestServicerFilter_106b7b9f829.service($ServletRequestServicerFilter_106b7b9f829.java)
> *
> $ServletRequestServicer_106b7b9f82f.service($ServletRequestServicer_106b7b9f82f.java)
> *
> org.apache.tapestry.multipart.MultipartDecoderFilter.service(MultipartDecoderFilter.java:52)
> *
> $ServletRequestServicerFilter_106b7b9f827.service($ServletRequestServicerFilter_106b7b9f827.java)
> *
> $ServletRequestServicer_106b7b9f82f.service($ServletRequestServicer_106b7b9f82f.java)
> *
> org.apache.tapestry.services.impl.SetupRequestEncoding.service(SetupRequestEncoding.java:53)
> *
> $ServletRequestServicerFilter_106b7b9f82b.service($ServletRequestServicerFilter_106b7b9f82b.java)
> *
> $ServletRequestServicer_106b7b9f82f.service($ServletRequestServicer_106b7b9f82f.java)
> *
> $ServletRequestServicer_106b7b9f821.service($ServletRequestServicer_106b7b9f821.java)
> *
> org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.java:141)
> *
> org.apache.tapestry.ApplicationServlet.doGet(ApplicationServlet.java:97)
> * javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
> * javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> * org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:427)
> *
> org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:475)
> *
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
> * org.mortbay.http.HttpContext.handle(HttpContext.java:1565)
> *
> org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:635)
> * org.mortbay.http.HttpContext.handle(HttpContext.java:1517)
> * org.mortbay.http.HttpServer.service(HttpServer.java:954)
> * org.mortbay.http.HttpConnection.service(HttpConnection.java:814)
> * org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:981)
> * org.mortbay.http.HttpConnection.handle(HttpConnection.java:831)
> *
> org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)
> * org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
> * org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)
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