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NPE in ChartReportItemImpl under JBoss 5.0

rnaylor

We have embedded the BIRT report engine in our product, and everything works fine in JBoss 4.3 EAP. Now trying to run under JBoss 5.0 EAP and experiencing NPE in ChartReportItemImpl. This only happens for reports which contain charts. Other reports work fine. Attached are relevant stack traces

org.eclipse.emf.ecore.resource.Resource$IOWrappedException: Package with uri 'http://www.birt.eclipse.org/ChartModel' not found. (file:///C:/jboss-eap-5.0/jboss-as/bin/test
.chart, 1, 367)
at org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.handleErrors(XMLLoadImpl.java:83)
at org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.load(XMLLoadImpl.java:191)
at org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doLoad(XMLResourceImpl.java:180)
at org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1445)
at org.eclipse.birt.chart.model.impl.SerializerImpl.fromXml(SerializerImpl.java:401)
at org.eclipse.birt.chart.reportitem.ChartReportItemImpl.deserialize(ChartReportItemImpl.java:276)
at org.eclipse.birt.report.model.extension.PeerExtensibilityProvider.initializeReportItem(PeerExtensibilityProvider.java:572)
at org.eclipse.birt.report.model.elements.ExtendedItem.initializeReportItem(ExtendedItem.java:303)
at org.eclipse.birt.report.model.elements.ExtendedItem.doCheck(ExtendedItem.java:673)
at org.eclipse.birt.report.model.elements.ExtendedItem.checkCompatibility(ExtendedItem.java:635)
at org.eclipse.birt.report.model.parser.ModuleParserHandler.handleExtendedItemCompatibility(ModuleParserHandler.java:370)
at org.eclipse.birt.report.model.parser.ModuleParserHandler.endDocument(ModuleParserHandler.java:357)
at org.apache.xerces.parsers.AbstractSAXParser.endDocument(Unknown Source)
at org.apache.xerces.impl.XMLDocumentScannerImpl.endEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityManager.endEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.load(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.skipSpaces(Unknown Source)
at org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl.parse(Unknown Source)
at org.eclipse.birt.report.model.parser.ModuleReader.readModule(ModuleReader.java:94)
at org.eclipse.birt.report.model.parser.DesignReader.read(DesignReader.java:88)
at org.eclipse.birt.report.model.core.DesignSession.openDesign(DesignSession.java:316)
at org.eclipse.birt.report.model.api.SessionHandle.openDesign(SessionHandle.java:292)
at org.eclipse.birt.report.engine.parser.ReportParser.getDesignHandle(ReportParser.java:158)
at org.eclipse.birt.report.engine.api.impl.ReportEngineHelper.openReportDesign(ReportEngineHelper.java:253)
at org.eclipse.birt.report.engine.api.impl.ReportEngine.openReportDesign(ReportEngine.java:614)
at org.eclipse.birt.report.service.ReportEngineService.openReportDesign(ReportEngineService.java:414)
at org.eclipse.birt.report.utility.BirtUtility.getRunnableFromDesignFile(BirtUtility.java:594)
at org.eclipse.birt.report.context.ViewerAttributeBean.getDesignHandle(ViewerAttributeBean.java:644)
at org.eclipse.birt.report.context.ViewerAttributeBean.__init(ViewerAttributeBean.java:231)
at org.eclipse.birt.report.context.BaseAttributeBean.init(BaseAttributeBean.java:231)
at org.eclipse.birt.report.context.ViewerAttributeBean.<init>(ViewerAttributeBean.java:116)
at org.eclipse.birt.report.context.BirtContext.__init(BirtContext.java:44)
at org.eclipse.birt.report.context.BaseContext.<init>(BaseContext.java:69)
at org.eclipse.birt.report.context.BirtContext.<init>(BirtContext.java:30)
at org.eclipse.birt.report.servlet.ViewerServlet.__getContext(ViewerServlet.java:150)

====
ALSO
====

java.lang.NullPointerException
at org.eclipse.birt.chart.model.impl.SerializerImpl.asXml(SerializerImpl.java:160)
at org.eclipse.birt.chart.reportitem.ChartReportItemImpl.serialize(ChartReportItemImpl.java:250)
at org.eclipse.birt.report.model.extension.PeerExtensibilityProvider.getReportItemExtensionProperty(PeerExtensibilityProvider.java:312)
at org.eclipse.birt.report.model.extension.PeerExtensibilityProvider.getExtensionProperty(PeerExtensibilityProvider.java:271)
at org.eclipse.birt.report.model.extension.PeerExtensibilityProvider.copyFromWithNonElementType(PeerExtensibilityProvider.java:720)
at org.eclipse.birt.report.model.extension.SimplePeerExtensibilityProvider.copyFromWithNonElementType(SimplePeerExtensibilityProvider.java:159)
at org.eclipse.birt.report.model.elements.ExtendedItem.baseClone(ExtendedItem.java:774)
at org.eclipse.birt.report.model.core.DesignElement.doClone(DesignElement.java:2916)
at org.eclipse.birt.report.model.core.StyledElement.doClone(StyledElement.java:74)
at org.eclipse.birt.report.model.core.ReferencableStyledElement.doClone(ReferencableStyledElement.java:66)
at org.eclipse.birt.report.model.elements.ExtendedItem.doClone(ExtendedItem.java:754)
at org.eclipse.birt.report.model.core.MultiElementSlot.doClone(MultiElementSlot.java:53)
at org.eclipse.birt.report.model.core.ContainerSlot.copy(ContainerSlot.java:203)
at org.eclipse.birt.report.model.core.DesignElement.doClone(DesignElement.java:2969)
at org.eclipse.birt.report.model.core.Module.doClone(Module.java:757)
at org.eclipse.birt.report.model.api.ModuleHandle.copy(ModuleHandle.java:3265)
at org.eclipse.birt.report.engine.api.impl.ReportRunnable.cloneRunnable(ReportRunnable.java:202)
at org.eclipse.birt.report.engine.api.impl.EngineTask.prepareDesign(EngineTask.java:1324)
at org.eclipse.birt.report.engine.api.impl.RunTask.doRun(RunTask.java:196)
at org.eclipse.birt.report.engine.api.impl.RunTask.run(RunTask.java:90)
at org.eclipse.birt.report.service.ReportEngineService.runReport(ReportEngineService.java:1164)
at org.eclipse.birt.report.service.BirtViewerReportService.runReport(BirtViewerReportService.java:155)
at org.eclipse.birt.report.service.actionhandler.BirtRunReportActionHandler.__execute(BirtRunReportActionHandler.java:81)
at org.eclipse.birt.report.service.actionhandler.BirtGetPageActionHandler.__checkDocumentExists(BirtGetPageActionHandler.java:58)
at org.eclipse.birt.report.service.actionhandler.AbstractGetPageActionHandler.prepareParameters(AbstractGetPageActionHandler.java:121)
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)

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Comments

JasonW

can you post your code? Do you have issues with reports with images?
How did you deploy your report engine?

Jason

rnaylor

Hi Jason -

We have embedded it as a WAR using the standard example from the BIRT site. I do not have any issues with images showing up, only reports with charts in them. Also, the reports in question work perfectly fine under JBoss 4.3 EAP as well as Tomcat 5.5 and 6.0. So I know it is not an issue with the reports. This only happens on JBoss 5.0 EAP

- Rich

JasonW

Rich,

I just tried this with 5.0.1 and had no issues. Can you verify your
WEB-INFplatformconfiguration directory is clear and restart your server and try again? Also can you try deploying the sample viewer to see if it works.

Jason

rnaylor

There is one file in my WEB-INFplatformconfiguration and that is config.ini
It has the following contents:

#Product Runtime Configuration File
eclipse.product=org.eclipse.birt.report.engine.ReportEngineSDK
osgi.bundles=org.eclipse.equinox.common@2:start, org.eclipse.update.configurator@3:start, org.eclipse.birt.core@start
osgi.framework.extensions=org.eclipse.birt.api
osgi.bundles.defaultStartLevel=4

I have not tried to run under the open source version of JBoss 5, there may be some differences between that and EAP 5.0. I can try running against 5.0.1 just to get a baseline.

So you were able to get a chart working in 5.0.1 ? From what I've seen so far there seems to be parse errors with the "ChartWithAxes" emf model data. The errors returned are:

org.eclipse.emf.ecore.xmi.PackageNotFoundException: Package with uri 'http://www.birt.eclipse.org/ChartModel' not found. (file:///C:/jboss-eap-5.0/jboss-as/bin/test.chart, 1, 367)
org.eclipse.emf.ecore.xmi.ClassNotFoundException: Class 'ChartWithAxes' not found. (file:///C:/jboss-eap-5.0/jboss-as/bin/test.chart, 1, 367)

JasonW

Was this an upgraded engine or a fresh install?
I have seen this error before and I believe it had to do with the libs not matching the plugins. I could be wrong on this but please verify. Also try deploying the Viewer on your EAP.

Jason

rnaylor

This was a modified version of 2.3.1 which only added a contribution which we had submitted to the BIRT group which allows for the report files to be loaded from a location other than the file system (for example a resource catalog)

I'll let you know how I make out with 5.0.1 and also testing the viewer app under EAP

- Rich

rnaylor

I tested this under JBoss 5.0.1 and am experiencing the same error. I am also seeing other errors where the startup of JBoss will freeze after getting into a deadlock situation. Analysis of the thread dumps is leading me to believe there is some issue with OSGI, which I believe is new to JBoss 5. Still researching, but if you have seen any other OSGI related issues, please let me know

- Rich

JasonW

Did you try the viewer?

rnaylor

I did get a chance to test the BIRT Report Viewer, and it does seem to work in JBoss 5.0.1 and JBoss 5.0 EAP. Seems to be some OSGI class loading issue. Still trying to track down why it cannot find the Chart classes.

JasonW

I assume you followed this method for deployment of the engine: 
<a class='bbc_url' href='http://wiki.eclipse.org/Servlet_Example_(BIRT)_2.1'>Servlet Example (BIRT) 2.1 - Eclipsepedia</a> 
 
Make sure you also use this line from that example: 
config.getAppContext().put(EngineConstants.APPCONTEXT_CLASSLOADER_KEY, yourclass.class.getClassLoader()); 
 
Jason

rnaylor

Yes, we did follow the given example and everything works on JBoss 4.3 and all other platforms. Just charting does not work in JBoss 5.0.

We do set the classloader in org.eclipse.birt.report.service.ReportEngineService

// Set appcontext classloader to Engine config
ClassLoader appClassLoader = BirtUtility.getAppClassLoader( );
if ( appClassLoader == null )
appClassLoader = ReportEngineService.class.getClassLoader( );
appContext.put( EngineConstants.APPCONTEXT_CLASSLOADER_KEY,
appClassLoader );

JasonW

This is very strange. I tried the example I pointed to with Open Source JBOSS 5.0.1 and I did not get the errors.

Jason

dannazario

ChartReportItemImpl Null Pointer on startup?

Thanks,
Dan

rnaylor

What we found was that we needed to move the BIRT libraries out of the EAR file and into the web-inflib of the war. That seemed to fix the classloading issue we ran into with latest version of JBoss.

- Rich

dannazario

Thanks Rich for the speedy reply!