NPE when using a label with a radio group component
---------------------------------------------------
Key: TAP5-635
URL: https://issues.apache.org/jira/browse/TAP5-635
Project: Tapestry 5
Issue Type: Bug
Affects Versions: 5.1.0.2
Reporter: Andy Blower
After three hours of detective work I've tracked this NPE to using a label with
a radio group component. This works in 5.0.18, but not in 5.1.0.2. The stack
trace is as follows for the example page I will attach:
ERROR (RequestExceptionHandler:62 ) - Processing of request failed with
uncaught exception: java.lang.NullPointerException
java.lang.NullPointerException
at
org.apache.tapestry5.dom.AbstractMarkupModel.encodeQuoted(AbstractMarkupModel.java:94)
at org.apache.tapestry5.dom.Attribute.render(Attribute.java:69)
at org.apache.tapestry5.dom.Element.toMarkup(Element.java:313)
at org.apache.tapestry5.dom.Element.writeChildMarkup(Element.java:835)
at org.apache.tapestry5.dom.Element.toMarkup(Element.java:351)
at org.apache.tapestry5.dom.Element.writeChildMarkup(Element.java:835)
at org.apache.tapestry5.dom.Element.toMarkup(Element.java:351)
at org.apache.tapestry5.dom.Element.writeChildMarkup(Element.java:835)
at org.apache.tapestry5.dom.Element.toMarkup(Element.java:351)
at org.apache.tapestry5.dom.Element.writeChildMarkup(Element.java:835)
at org.apache.tapestry5.dom.Element.toMarkup(Element.java:351)
at org.apache.tapestry5.dom.Element.writeChildMarkup(Element.java:835)
at org.apache.tapestry5.dom.Element.toMarkup(Element.java:351)
at org.apache.tapestry5.dom.Element.writeChildMarkup(Element.java:835)
at org.apache.tapestry5.dom.Element.toMarkup(Element.java:351)
at org.apache.tapestry5.dom.Document.toMarkup(Document.java:163)
at org.apache.tapestry5.dom.Node.toMarkup(Node.java:80)
at
org.apache.tapestry5.internal.services.MarkupWriterImpl.toMarkup(MarkupWriterImpl.java:57)
at
org.apache.tapestry5.internal.services.PageResponseRendererImpl.renderPageResponse(PageResponseRendererImpl.java:67)
at
$PageResponseRenderer_1208672dc1e.renderPageResponse($PageResponseRenderer_1208672dc1e.java)
at
org.apache.tapestry5.internal.services.PageRenderRequestHandlerImpl.handle(PageRenderRequestHandlerImpl.java:63)
at
org.apache.tapestry5.services.TapestryModule$33.handle(TapestryModule.java:1952)
at
$PageRenderRequestHandler_1208672dc1f.handle($PageRenderRequestHandler_1208672dc1f.java)
at
$PageRenderRequestHandler_1208672dc0b.handle($PageRenderRequestHandler_1208672dc0b.java)
at
org.apache.tapestry5.internal.services.ComponentRequestHandlerTerminator.handlePageRender(ComponentRequestHandlerTerminator.java:48)
at
$ComponentRequestHandler_1208672dc0f.handlePageRender($ComponentRequestHandler_1208672dc0f.java)
at
org.apache.tapestry5.internal.services.PageRenderDispatcher.dispatch(PageRenderDispatcher.java:45)
at $Dispatcher_1208672dc11.dispatch($Dispatcher_1208672dc11.java)
at $Dispatcher_1208672dc07.dispatch($Dispatcher_1208672dc07.java)
at
org.apache.tapestry5.services.TapestryModule$RequestHandlerTerminator.service(TapestryModule.java:250)
at
org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
at $RequestHandler_1208672dc08.service($RequestHandler_1208672dc08.java)
at
org.apache.tapestry5.services.TapestryModule$4.service(TapestryModule.java:782)
at $RequestHandler_1208672dc08.service($RequestHandler_1208672dc08.java)
at
org.apache.tapestry5.services.TapestryModule$3.service(TapestryModule.java:771)
at $RequestHandler_1208672dc08.service($RequestHandler_1208672dc08.java)
at
org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:85)
at $RequestHandler_1208672dc08.service($RequestHandler_1208672dc08.java)
at
com.proquest.apps.corelib.AppCoreLibModule$4.service(AppCoreLibModule.java:209)
at $RequestFilter_1208672dc04.service($RequestFilter_1208672dc04.java)
at $RequestHandler_1208672dc08.service($RequestHandler_1208672dc08.java)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:90)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:81)
at
org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:85)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:103)
at $RequestHandler_1208672dc08.service($RequestHandler_1208672dc08.java)
at $RequestHandler_1208672dbfe.service($RequestHandler_1208672dbfe.java)
at
org.apache.tapestry5.services.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:202)
at
org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:53)
at
$HttpServletRequestHandler_1208672dc00.service($HttpServletRequestHandler_1208672dc00.java)
at
org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
at
$HttpServletRequestFilter_1208672dbfd.service($HttpServletRequestFilter_1208672dbfd.java)
at
$HttpServletRequestHandler_1208672dc00.service($HttpServletRequestHandler_1208672dc00.java)
at
org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:730)
at
$HttpServletRequestHandler_1208672dc00.service($HttpServletRequestHandler_1208672dc00.java)
at
$HttpServletRequestHandler_1208672dbfb.service($HttpServletRequestHandler_1208672dbfb.java)
at org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:127)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:722)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:404)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:324)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:828)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
at
org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)
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