<div>Hello, can someone help me about this ?</div>
<div>It's a very simple test code in servlet.</div>
<div>with birt-runtime-4_4_1</div>
<div> </div>
<div>error like this.</div>
<div> </div>
<div>java.lang.NullPointerException</div>
<div>at org.eclipse.birt.chart.factory.Generator.getRowExpressions(Generator.java:1740)</div>
<div>at org.eclipse.birt.chart.factory.Generator.getRowExpressions(Generator.java:587)</div>
<div>at org.eclipse.birt.chart.reportitem.ChartReportItemImpl.getRowExpressions(ChartReportItemImpl.java:978)</div>
<div>at org.eclipse.birt.report.model.util.BoundColumnsMgr.dealExtendedItem(BoundColumnsMgr.java:219)</div>
<div>at org.eclipse.birt.report.model.writer.BoundColumnsWriterMgr.dealExtendedItem(BoundColumnsWriterMgr.java:426)</div>
<div>at org.eclipse.birt.report.model.writer.ModuleWriterImpl.visitExtendedItem(ModuleWriterImpl.java:1875)</div>
<div>at org.eclipse.birt.report.model.writer.ModuleWriter.visitExtendedItem(ModuleWriter.java:1)</div>
<div>at org.eclipse.birt.report.model.writer.DesignWriter.visitExtendedItem(DesignWriter.java:1)</div>
<div>at org.eclipse.birt.report.model.elements.ExtendedItem.apply(ExtendedItem.java:136)</div>
<div>at org.eclipse.birt.report.model.writer.ModuleWriterImpl.writeChildren(ModuleWriterImpl.java:2966)</div>
<div>at org.eclipse.birt.report.model.writer.ModuleWriterImpl.writeContents(ModuleWriterImpl.java:2951)</div>
<div>at org.eclipse.birt.report.model.writer.ModuleWriterImpl.writeContents(ModuleWriterImpl.java:2985)</div>
<div>at org.eclipse.birt.report.model.writer.DesignWriterImpl.writeSlot(DesignWriterImpl.java:174)</div>
<div>at org.eclipse.birt.report.model.writer.DesignWriterImpl.visitReportDesign(DesignWriterImpl.java:78)</div>
<div>at org.eclipse.birt.report.model.elements.ReportDesign.apply(ReportDesign.java:65)</div>
<div>at org.eclipse.birt.report.model.writer.ModuleWriterImpl.writeFile(ModuleWriterImpl.java:320)</div>
<div>at org.eclipse.birt.report.model.writer.ModuleWriterImpl.write(ModuleWriterImpl.java:288)</div>
<div>at org.eclipse.birt.report.model.writer.ModuleWriter.write(ModuleWriter.java:1)</div>
<div>at org.eclipse.birt.report.model.writer.DesignWriter.write(DesignWriter.java:1)</div>
<div>at org.eclipse.birt.report.model.api.ModuleHandleImpl.save(ModuleHandleImpl.java:1456)</div>
<div>at org.eclipse.birt.report.model.api.ModuleHandleImpl.saveAs(ModuleHandleImpl.java:1476)</div>
<div>at com.cs.servlet.SimpleCreate.buildReport(SimpleCreate.java:155)</div>
<div>at com.cs.servlet.SimpleCreate.doGet(SimpleCreate.java:68)</div>
<div>at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)</div>
<div>at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)</div>
<div>at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)</div>
<div>at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)</div>
<div>at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)</div>
<div>at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)</div>
<div>at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)</div>
<div>at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)</div>
<div>at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)</div>
<div>at org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)</div>
<div>at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)</div>
<div>at org.mortbay.jetty.Server.handle(Server.java:324)</div>
<div>at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)</div>
<div>at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:829)</div>
<div>at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:513)</div>
<div>at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)</div>
<div>at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)</div>
<div>at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)</div>
<div>at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)</div>
<div> </div>
<div> </div>
<div> </div>
<div>here is the code.</div>
<div>error happend when do </div>
<div>design.saveAs(path + "report/sample.rptdesign");</div>
<div> </div>
<div> </div>
<div> </div>
<div>static void buildReport(HttpServletRequest request, HttpServletResponse response) throws IOException, SemanticException {</div>
<div> DesignConfig config = new DesignConfig();</div>
<div> IDesignEngine engine = null;</div>
<div> try {</div>
<div> Platform.startup(config);</div>
<div> IDesignEngineFactory factory = (IDesignEngineFactory) Platform.createFactoryObject(IDesignEngineFactory.EXTENSION_DESIGN_ENGINE_FACTORY);</div>
<div> engine = factory.createDesignEngine(config);</div>
<div> } catch (Exception ex) {</div>
<div> ex.printStackTrace();</div>
<div> }</div>
<div> SessionHandle session = engine.newSessionHandle(ULocale.ENGLISH);</div>
<div> ReportDesignHandle design = session.createDesign();</div>
<div> ElementFactory efactory = design.getElementFactory();</div>
<div> // create chart</div>
<div> ExtendedItemHandle extendedItemHandle = efactory.newExtendedItem( null, "Chart" ); //$NON-NLS-1$</div>
<div> Chart tempAttachment = createStackedBar(); </div>
<div> extendedItemHandle.getReportItem().setProperty( "chart.instance", tempAttachment);//$NON-NLS-1$</div>
<div> design.getBody().add(extendedItemHandle);</div>
<div> </div>
<div> // save report</div>
<div> String path = request.getSession().getServletContext().getRealPath("/");</div>
<div> System.out.println(path);</div>
<div> design.saveAs(path + "report/sample.rptdesign");</div>
<div> design.close();</div>
<div> // show to viewer</div>
<div> String reportpath = request.getContextPath(); </div>
<div> response.sendRedirect(reportpath + "/frameset?__report=report/sample.rptdesign"); </div>
<div> }</div>
<div> </div>
<div> </div>
<div> </div>
<div>public static final Chart createStackedBar( )</div>
<div> {</div>
<div> ChartWithAxes cwaBar = ChartWithAxesImpl.create( );</div>
<div> cwaBar.setType( "Bar Chart" ); //$NON-NLS-1$</div>
<div> cwaBar.setSubType( "Stacked" ); //$NON-NLS-1$</div>
<div> // Plot</div>
<div> cwaBar.getBlock( ).setBackground( ColorDefinitionImpl.WHITE( ) );</div>
<div> cwaBar.getBlock( ).getOutline( ).setVisible( true );</div>
<div> Plot p = cwaBar.getPlot( );</div>
<div> p.getClientArea( ).setBackground( ColorDefinitionImpl.create( 255,255,225 ) );</div>
<div> // Title</div>
<div> cwaBar.getTitle( ).getLabel( ).getCaption( ).setValue( "Stacked Bar Chart" ); //$NON-NLS-1$</div>
<div> // Legend</div>
<div> Legend lg = cwaBar.getLegend( );</div>
<div> lg.setItemType( LegendItemType.SERIES_LITERAL );</div>
<div> // X-Axis</div>
<div> Axis xAxisPrimary = cwaBar.getPrimaryBaseAxes( )[0];</div>
<div> xAxisPrimary.setType( AxisType.TEXT_LITERAL );</div>
<div> xAxisPrimary.getMajorGrid( ).setTickStyle( TickStyle.BELOW_LITERAL );</div>
<div> xAxisPrimary.getOrigin( ).setType( IntersectionType.MIN_LITERAL );</div>
<div> // Y-Axis</div>
<div> Axis yAxisPrimary = cwaBar.getPrimaryOrthogonalAxis( xAxisPrimary );</div>
<div> yAxisPrimary.getMajorGrid( ).setTickStyle( TickStyle.LEFT_LITERAL );</div>
<div> yAxisPrimary.setType( AxisType.LINEAR_LITERAL );</div>
<div> yAxisPrimary.getLabel( ).getCaption( ).getFont( ).setRotation( 90 );</div>
<div> // Data Set</div>
<div> TextDataSet categoryValues = TextDataSetImpl.create( new String[]{</div>
<div> "Item 1", "Item 2", "Item 3", "Item 4", "Item 5"} ); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$</div>
<div> NumberDataSet orthoValues1 = NumberDataSetImpl.create( new double[]{25, 35, 15, 5, 20} );</div>
<div> NumberDataSet orthoValues2 = NumberDataSetImpl.create( new double[]{5, 10, 25, 10, 5} ); </div>
<div> SampleData sd = DataFactory.eINSTANCE.createSampleData( );</div>
<div> BaseSampleData sdBase = DataFactory.eINSTANCE.createBaseSampleData( );</div>
<div> sdBase.setDataSetRepresentation( "" );//$NON-NLS-1$</div>
<div> sd.getBaseSampleData( ).add( sdBase );</div>
<div> </div>
<div> OrthogonalSampleData sdOrthogonal1 = DataFactory.eINSTANCE.createOrthogonalSampleData( );</div>
<div> sdOrthogonal1.setDataSetRepresentation( "" );//$NON-NLS-1$</div>
<div> sdOrthogonal1.setSeriesDefinitionIndex( 0 );</div>
<div> sd.getOrthogonalSampleData( ).add( sdOrthogonal1 );</div>
<div> </div>
<div> OrthogonalSampleData sdOrthogonal2 = DataFactory.eINSTANCE.createOrthogonalSampleData( );</div>
<div> sdOrthogonal2.setDataSetRepresentation( "" );//$NON-NLS-1$</div>
<div> sdOrthogonal2.setSeriesDefinitionIndex( 1 );</div>
<div> sd.getOrthogonalSampleData( ).add( sdOrthogonal2 );</div>
<div> cwaBar.setSampleData( sd );</div>
<div> // X-Series</div>
<div> Series seCategory = SeriesImpl.create( );</div>
<div> seCategory.setDataSet( categoryValues );</div>
<div> SeriesDefinition sdX = SeriesDefinitionImpl.create( );</div>
<div> xAxisPrimary.getSeriesDefinitions( ).add( sdX );</div>
<div> sdX.getSeries( ).add( seCategory );</div>
<div> // Y-Series</div>
<div> BarSeries bs1 = (BarSeries) BarSeriesImpl.create( );</div>
<div> bs1.setDataSet( orthoValues1 );</div>
<div> bs1.setStacked( true );</div>
<div> bs1.getLabel( ).setVisible( true );</div>
<div> bs1.setLabelPosition( Position.INSIDE_LITERAL );</div>
<div> </div>
<div> BarSeries bs2 = (BarSeries) BarSeriesImpl.create( );</div>
<div> bs2.setDataSet( orthoValues2 );</div>
<div> bs2.setStacked( true );</div>
<div> bs2.getLabel( ).setVisible( true );</div>
<div> bs2.setLabelPosition( Position.INSIDE_LITERAL );</div>
<div> </div>
<div> SeriesDefinition sdY = SeriesDefinitionImpl.create( );</div>
<div> sdY.getSeriesPalette( ).shift( 0 );</div>
<div> yAxisPrimary.getSeriesDefinitions( ).add( sdY );</div>
<div> sdY.getSeries( ).add( bs1 );</div>
<div> sdY.getSeries( ).add( bs2 );</div>
<div> return cwaBar;</div>
<div> }</div>
