No I haven't customized exception reporting. It looks like the error
went away when I switched my inheritance model.
It happens when I have the following hierarchy
AbstractCMSComponent extends BaseComponent (injects ASOs used by many
components)
AbstractNewsComponent extends AbstractCMSComponent
ArticleLinker extends AbstractNewsComponent
Article extends AbstractNewsComponent
And then I have within Article.jwc a reference to ArticleLinker.
The exception went away when I made:
ArticleLinker extends AbstractCMSComponent.
If you are interested in this because you think It might be caused by
something internal in Tapestry I can try to reproduce the error and
write a test for it.
Thanks.
Raul.
P.D. Nice interview at Java Posse podcasts. I believe that many people
is attracted to frameworks like Ruby on Rails not only because of the
technology itself but because of their audio and video tutorials and
propaganda.
Howard Lewis Ship wrote:
Looks there's two exceptions here: some underlying exception getting
obscured by some other error generating the exception report. Have you
customized exception reporting?
On 2/9/06, Raul Raja Martinez <[EMAIL PROTECTED]> wrote:
Hi I'm getting a Null pointer exception when I try to activate one of my
pages once a link is clicked. The Tapestry exception report page does
not show up. Any Help is appreciated :).
Raul.
Page class:
public abstract class News extends AbstractCMSPage implements
IExternalPage {
public abstract Integer getArticleId();
public abstract void setArticleId(Integer articleId);
public void activateExternalPage(Object[] params, IRequestCycle cycle) {
setArticleId((Integer) params[0]);
}
}
Listener method in ArticleLink Component:
@InjectPage("News")
public abstract News getNewsPage();
public IPage openArticlePage(Integer id) {
getNewsPage().setArticleId(id);
return getNewsPage();
}
Jetty browser display:
HTTP ERROR: 500
INTERNAL_SERVER_ERROR
RequestURI=/portal/Home,frontPageNews2.$ArticleLink_1.itemLink.direct
Powered by Jetty://
Stack Trace:
1001682 [BoundedThreadPool0-13] WARN org.mortbay.log -
/portal/Home,frontPageNews2.$ArticleLink_1.itemLink.direct
java.lang.NullPointerException
at
org.apache.tapestry.util.exception.ExceptionAnalyzer.buildDescription(ExceptionAnalyzer.java:177)
at
org.apache.tapestry.util.exception.ExceptionAnalyzer.analyze(ExceptionAnalyzer.java:86)
at
org.apache.tapestry.util.exception.ExceptionAnalyzer.reportException(ExceptionAnalyzer.java:378)
at
org.apache.tapestry.error.RequestExceptionReporterImpl.reportRequestException(RequestExceptionReporterImpl.java:59)
at
$RequestExceptionReporter_1095175e27d.reportRequestException($RequestExceptionReporter_1095175e27d.java)
at
org.apache.tapestry.error.ExceptionPresenterImpl.presentException(ExceptionPresenterImpl.java:53)
at
$ExceptionPresenter_1095175e265.presentException($ExceptionPresenter_1095175e265.java)
at
org.apache.tapestry.engine.AbstractEngine.activateExceptionPage(AbstractEngine.java:121)
at
org.apache.tapestry.engine.AbstractEngine.service(AbstractEngine.java:280)
at
org.apache.tapestry.services.impl.InvokeEngineTerminator.service(InvokeEngineTerminator.java:60)
at
$WebRequestServicer_1095175e2bb.service($WebRequestServicer_1095175e2bb.java)
at
org.apache.tapestry.services.impl.DisableCachingFilter.service(DisableCachingFilter.java:48)
at
$WebRequestServicerFilter_1095175e2bd.service($WebRequestServicerFilter_1095175e2bd.java)
at
$WebRequestServicer_1095175e2bf.service($WebRequestServicer_1095175e2bf.java)
at
$WebRequestServicer_1095175e2b7.service($WebRequestServicer_1095175e2b7.java)
at
org.apache.tapestry.services.impl.WebRequestServicerPipelineBridge.service(WebRequestServicerPipelineBridge.java:56)
at
$ServletRequestServicer_1095175e29b.service($ServletRequestServicer_1095175e29b.java)
at
org.apache.tapestry.request.DecodedRequestInjector.service(DecodedRequestInjector.java:55)
at
$ServletRequestServicerFilter_1095175e297.service($ServletRequestServicerFilter_1095175e297.java)
at
$ServletRequestServicer_1095175e29d.service($ServletRequestServicer_1095175e29d.java)
at
org.apache.tapestry.multipart.MultipartDecoderFilter.service(MultipartDecoderFilter.java:52)
at
$ServletRequestServicerFilter_1095175e295.service($ServletRequestServicerFilter_1095175e295.java)
at
$ServletRequestServicer_1095175e29d.service($ServletRequestServicer_1095175e29d.java)
at
org.apache.tapestry.services.impl.SetupRequestEncoding.service(SetupRequestEncoding.java:53)
at
$ServletRequestServicerFilter_1095175e299.service($ServletRequestServicerFilter_1095175e299.java)
at
$ServletRequestServicer_1095175e29d.service($ServletRequestServicer_1095175e29d.java)
at
$ServletRequestServicer_1095175e28f.service($ServletRequestServicer_1095175e28f.java)
at
org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.java:141)
at
org.apache.tapestry.ApplicationServlet.doGet(ApplicationServlet.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:747)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:408)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:820)
at
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:811)
at
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:292)
at
org.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:108)
at
org.acegisecurity.intercept.web.SecurityEnforcementFilter.doFilter(SecurityEnforcementFilter.java:197)
at
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
at
org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:143)
at
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
at
org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:246)
at
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
at
org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:220)
at
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
at
org.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:173)
at
org.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:120)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:811)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:351)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:177)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:164)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:534)
at org.mortbay.jetty.Server.handle(Server.java:220)
at org.mortbay.jetty.Server.handle(Server.java:201)
at org.mortbay.jetty.HttpConnection.doHandler(HttpConnection.java:362)
at org.mortbay.jetty.HttpConnection.access$1600(HttpConnection.java:45)
at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:592)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:486)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:195)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:297)
at
org.mortbay.jetty.nio.SelectChannelConnector$HttpEndPoint.run(SelectChannelConnector.java:676)
at
org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:402)
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Howard M. Lewis Ship
Independent J2EE / Open-Source Java Consultant
Creator, Jakarta Tapestry
Creator, Jakarta HiveMind
Professional Tapestry training, mentoring, support
and project work. http://howardlewisship.com
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