Duplicate report requests from same user

keith_c06

Hello all,

I am working with reports written using birt 2.3.1 and deployed into a tomcat 5.5.27 application server using the web viewer example and have run in to an issue that has baffled me for a couple of days now.
If a single user, with a single session, requests the same report 2x, one will complete and the other will throw an error. The error has been one of two errors:
1. Report document instance is empty, or
2. org.eclipse.birt.report.service.api.ReportServiceException
org.eclipse.birt.report.service.api.ReportServiceException at org.eclipse.birt.report.service.ReportEngineService.openReportDocument(ReportEngineService.java:504) at org.eclipse.birt.report.service.BirtViewerReportService.openReportDocument(BirtViewerReportService.java:256) at org.eclipse.birt.report.service.BirtViewerReportService.getPageCount(BirtViewerReportService.java:683) at org.eclipse.birt.report.service.actionhandler.AbstractGetPageActionHandler.prepareParameters(AbstractGetPageActionHandler.java:140) at org.eclipse.birt.report.service.actionhandler.AbstractGetPageActionHandler.__execute(AbstractGetPageActionHandler.java:106) at org.eclipse.birt.report.service.actionhandler.AbstractBaseActionHandler.execute(AbstractBaseActionHandler.java:90) at org.eclipse.birt.report.soapengine.processor.AbstractBaseDocumentProcessor.__executeAction(AbstractBaseDocumentProcessor.java:47) at org.eclipse.birt.report.soapengine.processor.AbstractBaseComponentProcessor.executeAction(AbstractBaseComponentProcessor.java:143) at org.eclipse.birt.report.soapengine.processor.BirtDocumentProcessor.handleGetPage(BirtDocumentProcessor.java:87) at sun.reflect.GeneratedMethodAccessor127.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.eclipse.birt.report.soapengine.processor.AbstractBaseComponentProcessor.process(AbstractBaseComponentProcessor.java:112) at org.eclipse.birt.report.soapengine.endpoint.BirtSoapBindingImpl.getUpdatedObjects(BirtSoapBindingImpl.java:66) at sun.reflect.GeneratedMethodAccessor126.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.axis.providers.java.RPCProvider.invokeMethod(RPCProvider.java:397) at org.apache.axis.providers.java.RPCProvider.processMessage(RPCProvider.java:186) at org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java:323) at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32) at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118) at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83) at org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java:454) at org.apache.axis.server.AxisServer.invoke(AxisServer.java:281) at org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:699) at org.eclipse.birt.report.servlet.BirtSoapMessageDispatcherServlet.doPost(BirtSoapMessageDispatcherServlet.java:225) at javax.servlet.http.HttpServlet.service(HttpServlet.java:647) at org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:327) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.eclipse.birt.report.servlet.BirtSoapMessageDispatcherServlet.service(BirtSoapMessageDispatcherServlet.java:112) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) at org.eclipse.birt.report.filter.ViewerFilter.doFilter(ViewerFilter.java:68) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689) at java.lang.Thread.run(Thread.java:595) Caused by: org.eclipse.birt.report.engine.api.EngineException at org.eclipse.birt.report.engine.api.impl.ReportEngineHelper.openReportDocument(ReportEngineHelper.java:413) at org.eclipse.birt.report.engine.api.impl.ReportEngine.openReportDocument(ReportEngine.java:629) at org.eclipse.birt.report.service.ReportEngineService.openReportDocument(ReportEngineService.java:498) ... 47 more


I have deduced this is happening because each report request is trying to "grab" the same resource (the report document for rendering), but I cannot think of a way to work around this. In my deployment environment, it is very plausible for one user to request the same report with different parameters for comparison purposes. I would like to have them not get an error every time they try.
Any help would be greatly appreciated.

Thanks,

Keith

JasonW

Keith,

Did you get this working?

Jason