如何为报表添加图表chart

  ExtendedItemHandle extendedItemHandle = elementFactory.newExtendedItem(null, "Chart");  extendedItemHandle.setHeight( "288pt" );  extendedItemHandle.setWidth( "252pt" );  extendedItemHandle.setProperty( ExtendedItemHandle.DATA_SET_PROP, "Data Set" );  // Add chart instance to IReportItem extendedItemHandle.getReportItem( ).setProperty( "chart.instance", ChartUtil.createPieChart( ) ); designHandle.getBody().add(extendedItemHandle); 

public static Chart createPieChart() {ChartWithoutAxes cwoaPie = ChartWithoutAxesImpl.create();cwoaPie.setDimension(ChartDimension.TWO_DIMENSIONAL_WITH_DEPTH_LITERAL);cwoaPie.setType("Pie Chart"); //$NON-NLS-1$    cwoaPie.setSubType("Standard Pie Chart"); //$NON-NLS-1$// PlotcwoaPie.setSeriesThickness(10);// LegendLegend lg = cwoaPie.getLegend();lg.getOutline().setVisible(true);// TitlecwoaPie.getTitle().getLabel().getCaption().setValue("Pie Chart");//$NON-NLS-1$// Data SetTextDataSet categoryValues = TextDataSetImpl.create(new String[] {"New York", "Boston", "Chicago", "San Francisco", "Dallas", "cs" });//$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$NumberDataSet seriesOneValues = NumberDataSetImpl.create(new double[] {54.65, 21, 75.95, 91.28, 37.43, 2.2 });SampleData sdata = DataFactory.eINSTANCE.createSampleData();BaseSampleData sdBase = DataFactory.eINSTANCE.createBaseSampleData();sdBase.setDataSetRepresentation("");//$NON-NLS-1$sdata.getBaseSampleData().add(sdBase);OrthogonalSampleData sdOrthogonal = DataFactory.eINSTANCE.createOrthogonalSampleData();sdOrthogonal.setDataSetRepresentation("");//$NON-NLS-1$sdOrthogonal.setSeriesDefinitionIndex(0);sdata.getOrthogonalSampleData().add(sdOrthogonal);cwoaPie.setSampleData(sdata);// Base SeriesSeries seCategory = SeriesImpl.create();seCategory.setDataSet(categoryValues);SeriesDefinition sd = SeriesDefinitionImpl.create();cwoaPie.getSeriesDefinitions().add(sd);// sd.getSeriesPalette( ).shift( 0 );final Fill[] fiaBase = {ColorDefinitionImpl.create(45, 150, 225),ColorDefinitionImpl.ORANGE(),ColorDefinitionImpl.CREAM(),ColorDefinitionImpl.RED(),ColorDefinitionImpl.GREEN(),GradientImpl.create(ColorDefinitionImpl.create(225, 225, 255),ColorDefinitionImpl.create(255, 255, 225), -35, false),ColorDefinitionImpl.CYAN().darker(), };sd.getSeriesPalette().getEntries().clear();for (int i = 0; i < fiaBase.length; i++) {sd.getSeriesPalette().getEntries().add(fiaBase[i]);}sd.getSeriesPalette().getEntries();sd.getSeries().add(seCategory);// Orthogonal SeriesPieSeries sePie = (PieSeries) PieSeriesImpl.create();sePie.setDataSet(seriesOneValues);sePie.setSeriesIdentifier("Cities");//$NON-NLS-1$ sePie.setExplosion(5);SeriesDefinition sdCity = SeriesDefinitionImpl.create();sd.getSeriesDefinitions().add(sdCity);sdCity.getSeries().add(sePie);return cwoaPie;}