[birt-dev] Source value can not be null

Hi,

I am using eclipse 3.1.1 and BIRT 2.0.0 version.

I get “org.eclipse.birt.chart.exception.ChartException: $NO-RB$ Source value can not be null” exception while loading the Chart.rptdesign file and rendering it on canvas.

Attached is the rptdesign file which I am trying to load and render.

I am able to open this file in Eclipse’s Report Design perspective and able to preview it without any error.

But while rendering the same on canvas, it gives exceptions.

The code was working fine with BIRT2.0M3 version, and chart was rendering properly without any error.

But it’s not working with BIRT 2.0RC versions and BIRT2.0.0 version.

Code that I am using for rendering the chart:

public void paintControl(PaintEvent e) {

Chart chart = null;

try {

// Load chart from file and get it

chart = GraphDesignerUtility.getChart();

if (chart == null) {

// No chart available to render

}

else {

// Create copy of chart which will be used for rendering

Chart chartToRender = (Chart) EcoreUtil.copy( chart );

// Get a SWT device renderer

IDeviceRenderer deviceRenderer = null;

deviceRenderer = PluginSettings.instance().getDevice("dv.SWT");

deviceRenderer.setProperty(IDeviceRenderer.GRAPHICS_CONTEXT, e.gc);

//Make sure we stay in the client area's bounds

Rectangle rect = ((Composite) e.widget).getClientArea();

final Bounds bounds = BoundsImpl.create(rect.x + 2, rect.y + 2,

rect.width - 4, rect.height - 4);

bounds.scale(72d / deviceRenderer.getDisplayServer()

.getDpiResolution());

final Generator gr = Generator.instance( );

RunTimeContext rtc = new RunTimeContext();

// prepare the chart model.

//RunTimeContext rtc = gr.prepare( chartToRender,

// null,

// new BIRTScriptClassLoader( ),

// Locale.getDefault( ) );

//ScriptHandler sh = new ScriptHandler( );

//rtc.setScriptHandler( sh );

//rtc.setEnableScripting( false );

GeneratedChartState state = gr.build( deviceRenderer.getDisplayServer( ),

chartToRender,

bounds,

null,

rtc,

null );

gr.render( deviceRenderer, state );

}

preservedValidChart = chart;

} catch (Exception ex) {

ex.printStackTrace();

graphView.refresh();

}

I also tried calling Generator’s prepare method, but found the same problem.

Exception that application throws:

org.eclipse.birt.chart.exception.ChartException: $NO-RB$ Source value can not be null

at org.eclipse.birt.chart.factory.Generator.render(Generator.java:1214)

at ibsgraphs.graph.listener.GraphPaintListener.paintControl(GraphPaintListener.java:119)

at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:83)

at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)

at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)

at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:867)

at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:852)

at org.eclipse.swt.widgets.Composite.WM_PAINT(Composite.java:1153)

at org.eclipse.swt.widgets.Control.windowProc(Control.java:3090)

at org.eclipse.swt.widgets.Display.windowProc(Display.java:3706)

at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)

at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:1656)

at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2711)

at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1699)

at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)

at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367)

at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)

at net.ibs.ui.client.IBSJavaClient.run(IBSJavaClient.java:29)

at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)

at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)

at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334)

at org.eclipse.core.launcher.Main.basicRun(Main.java:278)

at org.eclipse.core.launcher.Main.run(Main.java:973)

at org.eclipse.core.launcher.Main.main(Main.java:948)

Caused by: java.lang.IllegalArgumentException: Source value can not be null

at org.eclipse.birt.chart.event.PrimitiveRenderEvent.setSourceObject(PrimitiveRenderEvent.java:278)

at org.eclipse.birt.chart.event.EventObjectCache.getEventObject(EventObjectCache.java:94)

at org.eclipse.birt.chart.factory.RunTimeContext.notifyStructureChange(RunTimeContext.java:243)

at org.eclipse.birt.chart.render.AxesRenderer.renderPlot(AxesRenderer.java:2173)

at org.eclipse.birt.chart.render.AxesRenderer.render(AxesRenderer.java:191)

at org.eclipse.birt.chart.factory.Generator.render(Generator.java:1209)

... 28 more

Please advice.

Thank you.

Bharat Panchal