Bug 193467 URL hyperlink can't work in chart viewer
chart/org.eclipse.birt.chart.viewer/src/org/eclipse/birt/chart/viewer/internal/util/ChartImageManager.java
this.rtc.setULocale( ULocale.getDefault( ) );
		}
		else
		{
			this.rtc = rtc;
		}
		sessionIds.add( sessionId );
		generateImage( );
	}
	private InputStream generateStream( ) throws BirtException
	{
		InputStream fis = null;
		Generator gr = Generator.instance( );
		try
		{
			if ( evaluator == null )
			{
				
				if ( !ChartWebHelper.isChartInRuntime( cm ) )
				{
					cm.createSampleRuntimeSeries( );
				}
			}
			else
			{
				gr.bindData( evaluator, cm, rtc );
			}
			
			idr = PluginSettings.instance( ).getDevice( "dv." 
					+ sExtension.toUpperCase( Locale.US ) );